DELL 3100 2-in-1 User Manual

Displayed below is the user manual for 3100 2-in-1 by DELL which is a product in the Notebooks category. This manual has pages.

Related Manuals

DELL 3100 Manual

Dell Chromebook 3100 2-in-1

Service Manual

Regulatory Model: P30T

Regulatory Type: P30T001

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the

problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

subsidiaries. Other trademarks may be trademarks of their respective owners.

2019 - 06

Rev. A02

1 Working on your computer............................................................................................................ 5

Safety instructions................................................................................................................................................................ 5

Storing Chromebooks for long term - best practices.......................................................................................................5

Before working inside your computer................................................................................................................................. 6

After working inside your computer....................................................................................................................................6

2 Technology and components......................................................................................................... 7

USB features.......................................................................................................................................................................... 7

Keyboard.................................................................................................................................................................................9

Keyboard keys function...................................................................................................................................................9

Touchpad.............................................................................................................................................................................. 10

Bluetooth................................................................................................................................................................................11

3 Major components of your system ............................................................................................... 12

4 Removing and Installing...............................................................................................................14

microSD card........................................................................................................................................................................ 14

Removing microSD card................................................................................................................................................14

Installing microSD card.................................................................................................................................................. 14

Base cover............................................................................................................................................................................ 15

Removing the base cover..............................................................................................................................................15

Installing the base cover................................................................................................................................................ 17

Battery...................................................................................................................................................................................19

Lithium-ion battery precautions................................................................................................................................... 19

Removing the battery................................................................................................................................................... 20

Installing the battery......................................................................................................................................................22

Speaker.................................................................................................................................................................................25

Removing the speakers................................................................................................................................................ 25

Installing the speakers................................................................................................................................................... 27

Input Output board..............................................................................................................................................................30

Removing the Input and output board........................................................................................................................30

Installing Input output board.........................................................................................................................................32

Keyboard lattice and Keyboard..........................................................................................................................................34

Removing the keyboard................................................................................................................................................34

Installing the keyboard...................................................................................................................................................37

System board.......................................................................................................................................................................39

Removing the system board........................................................................................................................................ 39

Installing system board..................................................................................................................................................43

World facing camera........................................................................................................................................................... 48

Removing world facing camera................................................................................................................................... 48

Installing world facing camera......................................................................................................................................49

Display assembly..................................................................................................................................................................50

Removing display assembly..........................................................................................................................................50

Installing display assembly............................................................................................................................................ 53

Contents

Contents 3

Display panel-Touch............................................................................................................................................................56

Removing display panel-Touch.................................................................................................................................... 56

Installing display panel-Touch...................................................................................................................................... 58

Camera................................................................................................................................................................................. 60

Removing camera..........................................................................................................................................................60

Installing camera............................................................................................................................................................. 61

Display cable.........................................................................................................................................................................62

Removing display cable.................................................................................................................................................62

Installing display cable................................................................................................................................................... 64

Display hinges.......................................................................................................................................................................66

Removing display hinge................................................................................................................................................ 66

Installing display hinge...................................................................................................................................................68

Palm rest...............................................................................................................................................................................70

Replacing palmrest assembly....................................................................................................................................... 70

5 Troubleshooting......................................................................................................................... 72

Basic troubleshooting..........................................................................................................................................................72

Power issues...................................................................................................................................................................72

CROSH..................................................................................................................................................................................76

CROSH commands............................................................................................................................................................. 76

Chrome commands............................................................................................................................................................. 78

Commonly used CROSH command.................................................................................................................................. 84

Check battery charging status.................................................................................................................................... 84

Reset Chromebook.............................................................................................................................................................. 91

Recovery Chromebook....................................................................................................................................................... 94

Recovering the Chromebook....................................................................................................................................... 94

6 Getting help...............................................................................................................................97

Contacting Dell.....................................................................................................................................................................97

4Contents

Working on your computer

Safety instructions

Prerequisites

Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise

noted, each procedure included in this document assumes that the following conditions exist:

• You have read the safety information that shipped with your computer.

• A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.

About this task

NOTE: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the

computer, replace all covers, panels, and screws before connecting to the power source.

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For

additional safety best practices information, see the Regulatory Compliance Homepage

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and

simple repairs as authorized in your product documentation, or as directed by the online or telephone service and

support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow

the safety instructions that came with the product.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching

an unpainted metal surface at the same time as touching a connector on the back of the computer.

CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by

its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables

have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you

disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also,

before you connect a cable, ensure that both connectors are correctly oriented and aligned.

NOTE: The color of your computer and certain components may appear differently than shown in this document.

Storing Chromebooks for long term - best

practices

Prior to long term (Summer) storage:

1. Update to the latest version of the Chrome OS and charge your Chromebooks so that the battery is at least 80% full.

a. This ensures that even when the battery discharges while unplugged over the summer, it will not fully run out of power.

2. Connect the device to a charger and then turn it on.

3. Hold Refresh and Power keys at the same time.

4. While holding these keys, remove the power cable from the device and then release the keys. The device should shut down and

remain off.

5. Attempt to power the unit on, by pressing the power button. If the unit does not power on, you have completed the steps and can

safely store the system. If the unit powers on, you should repeat steps 2 to 4.

Upon redeploying:

Working on your computer 5

1. Connect the Chromebooks to a charger and a power source, which will get them out of the battery disconnect state. Power up your

device.

2. Connect your Chromebooks to WiFi and update them to the latest Chrome OS release.

a. This can take time, as multiple Chrome OS versions may have been released since the last time the device was updated.

Before working inside your computer

About this task

To avoid damaging your computer, perform the following steps before you begin working inside the computer.

Steps

1. Ensure that you follow the Safety Instruction.

2. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.

3. Turn off your computer.

4. Disconnect all network cables from the computer.

CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from

the network device.

5. Disconnect your computer and all attached devices from their electrical outlets.

6. Press and hold the power button while the computer is unplugged to ground the system board.

NOTE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching

an unpainted metal surface at the same time as touching a connector on the back of the computer.

After working inside your computer

About this task

After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your

computer.

Steps

1. Connect any telephone or network cables to your computer.

CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the

computer.

2. Connect your computer and all attached devices to their electrical outlets.

3. Turn on your computer.

4. If required, verify that the computer works correctly by running ePSA diagnostics.

6Working on your computer

Technology and components

NOTE: Instructions provided in this section are applicable on computers shipped with Windows 10 operating system.

Windows 10 is factory-installed with this computer.

Topics:

•USB features

•Keyboard

•Touchpad

•Bluetooth

USB features

Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral

devices like mice, keyboards, external drivers, and printers.

Let's take a quick look on the USB evolution referencing to the table below.

Table 1. USB evolution

Type Data Transfer Rate Category Introduction Year

USB 2.0 480 Mbps High Speed 2000

USB 3.0/USB 3.1 Gen 1 5 Gbps Super Speed 2010

USB 3.1 Gen 2 10 Gbps Super Speed 2013

USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB)

For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and

yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands. The USB 3.0/USB 3.1 Gen 1

finally has the answer to the consumers' demands with a theoretically 10 times faster than its predecessor. In a nutshell, USB 3.1 Gen 1

features are as follows:

• Higher transfer rates (up to 5 Gbps)

• Increased maximum bus power and increased device current draw to better accommodate power-hungry devices

• New power management features

• Full-duplex data transfers and support for new transfer types

• Backward USB 2.0 compatibility

• New connectors and cable

The topics below cover some of the most commonly asked questions regarding USB 3.0/USB 3.1 Gen 1.

Speed

Currently, there are 3 speed modes defined by the latest USB 3.0/USB 3.1 Gen 1 specification. They are Super-Speed, Hi-Speed and Full-

Speed. The new SuperSpeed mode has a transfer rate of 4.8Gbps. While the specification retains Hi-Speed, and Full-Speed USB mode,

commonly known as USB 2.0 and 1.1 respectively, the slower modes still operate at 480Mbps and 12Mbps respectively and are kept to

maintain backward compatibility.

Technology and components 7

USB 3.0/USB 3.1 Gen 1 achieves the much higher performance by the technical changes below:

• An additional physical bus that is added in parallel with the existing USB 2.0 bus (refer to the picture below).

• USB 2.0 previously had four wires (power, ground, and a pair for differential data); USB 3.0/USB 3.1 Gen 1 adds four more for two

pairs of differential signals (receive and transmit) for a combined total of eight connections in the connectors and cabling.

• USB 3.0/USB 3.1 Gen 1 utilizes the bidirectional data interface, rather than USB 2.0's half-duplex arrangement. This gives a 10-fold

increase in theoretical bandwidth.

With today's ever increasing demands placed on data transfers with high-definition video content, terabyte storage devices, high

megapixel count digital cameras etc., USB 2.0 may not be fast enough. Furthermore, no USB 2.0 connection could ever come close to the

480Mbps theoretical maximum throughput, making data transfer at around 320Mbps (40MB/s) — the actual real-world maximum.

Similarly, USB 3.0/USB 3.1 Gen 1 connections will never achieve 4.8Gbps. We will likely see a real-world maximum rate of 400MB/s with

overheads. At this speed, USB 3.0/USB 3.1 Gen 1 is a 10x improvement over USB 2.0.

Applications

USB 3.0/USB 3.1 Gen 1 opens up the laneways and provides more headroom for devices to deliver a better overall experience. Where USB

video was barely tolerable previously (both from a maximum resolution, latency, and video compression perspective), it's easy to imagine

that with 5-10 times the bandwidth available, USB video solutions should work that much better. Single-link DVI requires almost 2Gbps

throughput. Where 480Mbps was limiting, 5Gbps is more than promising. With its promised 4.8Gbps speed, the standard will find its way

into some products that previously weren't USB territory, like external RAID storage systems.

Listed below are some of the available SuperSpeed USB 3.0/USB 3.1 Gen 1 products:

• External Desktop USB 3.0/USB 3.1 Gen 1 Hard Drives

• Portable USB 3.0/USB 3.1 Gen 1 Hard Drives

• USB 3.0/USB 3.1 Gen 1 Drive Docks & Adapters

• USB 3.0/USB 3.1 Gen 1 Flash Drives & Readers

• USB 3.0/USB 3.1 Gen 1 Solid-state Drives

• USB 3.0/USB 3.1 Gen 1 RAIDs

• Optical Media Drives

• Multimedia Devices

• Networking

• USB 3.0/USB 3.1 Gen 1 Adapter Cards & Hubs

Compatibility

The good news is that USB 3.0/USB 3.1 Gen 1 has been carefully planned from the start to peacefully co-exist with USB 2.0. First of all,

while USB 3.0/USB 3.1 Gen 1 specifies new physical connections and thus new cables to take advantage of the higher speed capability of

the new protocol, the connector itself remains the same rectangular shape with the four USB 2.0 contacts in the exact same location as

before. Five new connections to carry receive and transmitted data independently are present on USB 3.0/USB 3.1 Gen 1 cables and only

come into contact when connected to a proper SuperSpeed USB connection.

Windows 10 will be bringing native support for USB 3.1 Gen 1 controllers. This is in contrast to previous versions of Windows, which

continue to require separate drivers for USB 3.0/USB 3.1 Gen 1 controllers.

8Technology and components

Keyboard

Dell keyboards have a few extra features to help you browse the web effortlessly and efficiently. The keyboard contains a dedicated

search key and a new row of web shortcut keys. A standard USB Windows keyboard can also be used with the Chromebook, using the

same keyboard shortcuts. The image below shows the keyboard layout.

Keyboard keys function

The Chrome device keyboard is designed to help you get to the things you need the most. The table below is an overview of the special

keys on the top row of the keyboard:

Table 2. Special keys

Special keys

Go to the previous page in browser history

Go to the next page in browser history

Reload current page

Enter Immersive mode, which hides the tabs and launcher

Enter Overview mode, which shows all windows

Decrease screen brightness

Increase screen brightness

Mute

Decrease the volume

Increase the volume

Search applications and the web at the same time. On a Chromebook, this key is on the side, where the Caps Lock

key is normally located.

Keyboard shortcut keys

Table 3. Shortcut keys

Shortcut keys

Function Combination keys

Page up Press Alt and the up arrow

Technology and components 9

Shortcut keys

Page down Press Alt and the down arrow

Home Press Ctrl+Alt, and the up arrow

End Press, Ctrl+Alt and the down arrow

Delete Press Alt+Backspace

Toggle the bookmark bar Ctrl+Shift+B

Search current webpage Ctrl+F

Open a new tab Ctrl+T

Open a new window Ctrl+N

Open the link you clicked in a new background tab Press Alt and click a link

Switch to next tab Ctrl+Tab

Sign out of Google Account Ctrl+Shift+Q

Close current tab Ctrl+W

To see more shortcuts, simply press Ctrl+Alt+? To open the keyboard viewer on your screen.

Touchpad

This page contains information for Dell touchpad gestures.

The following table lists some gestures and actions supported by the Chromebook touchpad:

Table 4. Touch pad gestures

Touchpad gestures

Gestures Explanation

Simply move your finger across the touchpad.

Press down on the lower half of the touchpad. Since tap-to-click is enabled by default, you can quickly tap

the touchpad to click.

Click the touchpad with two fingers.

10 Technology and components

Touchpad gestures

Place two fingers on the touchpad and move them up and down to scroll vertically, left and right to scroll

horizontally. If you have Australian scrolling enabled, move two fingers up to scroll down. (It works in the

same way as say, your smartphone or tablet.) If you have multiple browser tabs open, you can also swipe left

and right with three fingers to quickly move between tabs.

Swipe Quickly move two fingers left or right to go backward or forward on web pages or while using apps.

Click the item you want to move with one finger. With a second finger, move the item. Release both fingers

to drop the item at its new location.

Bluetooth

This section outlines the instruction to pair a bluetooth device with your Chrome devices.

Bluetooth technology lets you connect devices wirelessly over short distances. To use the Bluetooth accessories with your Chromebook,

first check if your Chromebook supports Bluetooth. You will then need to pair it with the accessory.

To see if you can use the Bluetooth accessories with your Chromebook, click the status area in the lower right corner, where your account

picture appears. If you see the Bluetooth icon or in the menu, your Chromebook supports Bluetooth. If you do not see either

of these icons, your Chromebook does not support Bluetooth. If your Chromebook supports Bluetooth, it can connect to a wide range of

the Bluetooth accessories, including the following:

• Keyboards

• Mice

• Speakers

• Headphones

• Headsets (audio only)

To connect a Bluetooth device with your Chromebook, you need to pair them. Here is how:

1. Sign in to your Chromebook.

2. Click the status area in the lower-right corner, where your account picture appears.

3. Select your Bluetooth status in the menu that appears.

4. If Bluetooth is disconnected, click the disconnected icon. or click Enable Bluetooth in the menu. Your Chromebook will

automatically begin scanning for available Bluetooth devices.

5. Pick the device you want to add from the list of available Bluetooth devices and click Connect.

6. Follow the instructions on the screen to connect your Bluetooth device.

• If you are connecting a mouse, no PIN is normally required. If you are prompted for a PIN, enter the PIN for your mouse using your

Chrome device's keyboard.

• If you are connecting a keyboard, enter the randomly generated PIN on the keyboard you wish to pair and press Enter.

To confirm that your Bluetooth device is connected, check the Bluetooth status. You should see your device listed there.

NOTE: Just got your Chromebook or Chromebox? If you are turning on your chrome device for the first time and you

have a Bluetooth device nearby that is also turned on, your chrome device may automatically detect the device and show

you steps to pair it. You will see these instructions only if your chrome device does not already have a similar device

connected or its functionality is not built in, like a keyboard or trackpad.

Technology and components 11

Major components of your system

1. Base cover

2. System board

12 Major components of your system

3. Battery

4. Speaker

5. Palmrest assembly

6. Display assembly

7. Input and output board

8. World facing camera

NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These

parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative

for purchase options.

Major components of your system 13

Removing and Installing

microSD card

Removing microSD card

Steps

1. Follow the procedure in Before working inside your computer.

2. Press in on the microSD card [1] to release it from the computer.

3. Remove the microSD card from the computer [2].

Installing microSD card

Steps

Slide the SD card into its slot until it clicks into place [1, 2].

14 Removing and Installing

Next steps

Follow the procedure in after working inside your computer.

Base cover

Removing the base cover

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

Steps

1. Loosen the nine captive screws that secure the base cover to the computer.

Removing and Installing 15

2. Pry the base cover from the edge using a plastic scribe [1, 2].

16 Removing and Installing

NOTE: While removing the base cover, on-site technicians must take care to remove the base cover carefully. There

are prying recess points next to the left and right hinges which ease the disassembly procedure. With the help of a

plastic scribe, pry open from the upper left side of the base cover, continue working your way around the left and

right side of the base cover, then remove the base cover from the system.

3. Lift the base cover from the computer.

Installing the base cover

Steps

1. Align the base cover on the computer and press the edges of the cover until it clicks into place.

Removing and Installing 17

2. Tighten the nine captive screws to secure the base cover to the computer.

18 Removing and Installing

Next steps

1. Install the microSD card.

2. Follow the procedure in after working inside your computer.

Battery

Lithium-ion battery precautions

CAUTION:

• Exercise caution when handling Lithium-ion batteries.

• Discharge the battery as much as possible before removing it from the system. This can be done by disconnecting

the AC adapter from the system to allow the battery to drain.

• Do not crush, drop, mutilate, or penetrate the battery with foreign objects.

• Do not expose the battery to high temperatures, or disassemble battery packs and cells.

• Do not apply pressure to the surface of the battery.

• Do not bend the battery.

• Do not use tools of any kind to pry on or against the battery.

• Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental puncture or

damage to the battery and other system components.

• If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending,

or crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for

assistance. See www.dell.com/contactdell.

• Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers.

Removing and Installing 19

Removing the battery

Prerequisites

1. Follow the procedure in before working inside your computer

2. Remove the microSD card.

3. Remove the base cover.

CAUTION:

During a service incident, it is possible that a component of the system board could become damaged if the

battery is disconnected from the system board prior to initiating the battery cut-off.

Steps

1. Connect the device to the AC adaptor and then turn it on.

2. Hold Refresh and Power button (left side of system) at the same time.

3. While holding these keys, remove the power cable from the device and then release the keys. The device should shut down and

remain off.

4. Attempt to power the unit on, by pressing the power button. If the unit does not power on, you have completed the steps and can

safely work on the Chromebook. If the unit powers on, you should repeat steps 1 to 3.

NOTE: It is now safe to unplug the battery and service the Chromebook.

5. Disconnect the battery cable from the connector in the system board [1].

6. Unroute the battery cable from the routing channel [2].

7. Remove the three (M2.0x4.0) screws that secure the battery to the palmrest [1].

8. Peel the adhesive tape that secures the battery in place [2, 3].

20 Removing and Installing

9. Pry the battery from the bottom edge [1] and remove the battery from the computer [2].

Removing and Installing 21

Installing the battery

Steps

1. Peel the protective film before installing the battery [1].

2. Align the battery into the slot on the computer and press the battery on the upper left corner to fix it to the palmrest [2].

22 Removing and Installing

3. Replace the three (M2.0x4.0) screws to secure the battery to the palmrest [1].

Removing and Installing 23

4. Affix the adhesive tape to the battery [2, 3].

5. Reroute the battery cable and connect the cable to the connector on the system board [1, 2].

24 Removing and Installing

6. Connect the AC adaptor into the device to recover the battery from cutoff mode.

Next steps

1. Install the base cover.

2. Install the microSD card.

3. Follow the procedure in after working inside your computer.

Speaker

Removing the speakers

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

Steps

1. Peel the adhesive tape that secures the speaker cable to the palmrest [1].

2. Disconnect the speaker cable from the connector on the system board [2].

3. Peel the adhesive tape that secures the speaker cable to the palmrest [3].

4. Unroute the cable from retention clips in the routing channel.

Removing and Installing 25

5. Lift the speakers away from the computer.

26 Removing and Installing

Installing the speakers

Steps

1. Place the speakers into the slots on the computer.

Removing and Installing 27

2. Reroute the speaker cable through the retention clips in the routing channel.

28 Removing and Installing

3. Connect the speaker cable to the connector on the system board [1].

4. Affix the adhesive tapes to secure the speaker cable to the computer [2, 3].

Removing and Installing 29

Next steps

1. Install the battery.

2. Install the base cover.

3. Install the microSD card.

4. Follow the procedure in after working inside your computer.

Input Output board

Removing the Input and output board

Prerequisites

NOTE: The input and output board depends on the configuration ordered. Not all system configuration come with the

input and output board.

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

Steps

1. Disconnect the Type-C power cable from the connector in the IO board [1].

2. Open the latch and disconnect the 30-pin and 40-pin IO board cable from the connectors in the IO board [2].

30 Removing and Installing

3. Remove the two (M2.0x4.0) screws that secure the IO board bracket to the IO board [1].

4. Use a plastic scribe to lift the IO board bracket away from the palmrest [2].

Removing and Installing 31

5. Remove the two (M2.0x4.0) screws that secure the IO board to the palmrest [1].

6. Lift the IO board away from the computer [2].

Installing Input output board

Steps

1. Place the IO board to its slot in the computer [1].

2. Replace the two (M2.0x4.0) screws that secure the I/O board to the palmrest [2].

32 Removing and Installing

3. Place the IO board bracket to its slot and replace the two (M2.0x4.0) screws that secure the bracket to the IO board [1, 2].

4. Connect the Type-C power cable to the connector on the IO board [1].

Removing and Installing 33

5. Connect the 30-pin and 40-pin IO board cables and close the latch to secure it to the IO board [2].

Next steps

1. Install the battery.

2. Install the base cover.

3. Install the microSD card.

4. Follow the procedure in after working inside your computer.

Keyboard lattice and Keyboard

Removing the keyboard

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

Steps

1. Disconnect the keyboard cable from the connector on the system board [1].

2. Lift the computer and open the LCD fully [2].

34 Removing and Installing

3. Use a plastic scribe to release the keyboard from the two release holes in the system [2].

NOTE: The two release holes for the keyboard are indicated by the "KB" labeling.

Removing and Installing 35

4. Turn the system over and carefully lift the keyboard and then pull the keyboard cable through the gap in the palm rest.

5. Lift and pull the keyboard out from the computer.

36 Removing and Installing

Installing the keyboard

Steps

1. Align the keyboard trim with the tabs on the system, and carefully lift the keyboard slightly and insert the keyboard cable through the

gap on the palm rest [1, 2]

2. Press the keyboard until it clicks into place and then close the LCD fully before turning the system over [1, 2]

Removing and Installing 37

3. Pull the keyboard cable from the gap in the palmrest and connect it to the connector on the system board.

38 Removing and Installing

Next steps

1. Install the battery.

2. Install the base cover.

3. Install the microSD card.

4. Follow the procedure in after working inside your computer.

System board

Removing the system board

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

Steps

1. Disconnect the input output board cables [1], touchpad cable [2] and the keyboard cable [3].

2. Disconnect the world facing camera cable [1], EMR cable [2], USB Type-C power cable [3] and the speaker cable [4] from the system

board.

Removing and Installing 39

3. Remove the single (M2x3) screw that secures the WLAN bracket to the system board [1], and lift the WLAN bracket from the system

board [2].

4. Disconnect the two wireless antennas from the connector on the system board [3].

5. Remove the single (M2x4) screw that secures the eDP bracket to the system board and remove the eDP bracket [4, 5].

6. Pull back the adhesive tape securing the display cable [6] and disconnect the display cable from the system board [7].

40 Removing and Installing

7. Lift the system board bracket away from the computer.

Removing and Installing 41

8. Remove the four (M2.0x4.0) screws that secure the system board to the palmrest [1].

9. Lift and remove the system board from the computer [2].

42 Removing and Installing

Installing system board

Steps

1. Align the screw holes on the system board with the screw holes and slide the system board on the computer [1].

2. Replace the four (M2.0x4.0) screws to secure the system board to the palmrest [2].

Removing and Installing 43

3. Place the IO board bracket in its place on the system board.

44 Removing and Installing

]

4. Reconnect the antennas to the wireless module [1], place the wireless bracket and secure it with the single (M2.0x3.0) screw [2, 3].

5. Connect the display cable to the connector on the system board and secure the adhesive tape [4, 5].

6. Place the display cable bracket and secure it with the single (M2.0x4.0) screw [6, 7].

Removing and Installing 45

7. Connect the world facing camera cable and the EMR sensor cable to the system board [1], [2].

8. Connect the Type-C power cable and the speaker cable to the connectors on the system board [3, 4].

46 Removing and Installing

9. Connect the 30-pin IO board cable, 40-pin IO board cable, and the touchpad cable to the connectors on the system board and close

the latches [1, 2].

10. Connect the keyboard cable to the connector on the system board [3].

Removing and Installing 47

Next steps

1. Install the battery.

2. Install the base cover.

3. Install the microSD card.

4. Follow the procedure in after working inside your computer.

World facing camera

Removing world facing camera

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

5. Remove thesystem board

Steps

1. Remove the single (M2.5x2.5) screw that secures the world facing camera to the palmrest [1].

2. Lift the camera away from the system [2].

48 Removing and Installing

Installing world facing camera

Steps

1. Align and place the world facing camera to its slot on the palmrest.

2. Replace the single (M2.5x2.5) screw to secure the camera to the palmrest.

Removing and Installing 49

Next steps

1. Install the system board.

2. Install thebattery.

3. Install the base cover.

4. Install the microSD card.

5. Follow the procedure in after working inside your computer.

Display assembly

Removing display assembly

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

Steps

1. Disconnect the EMR sensor cable [1].

2. Remove the single (M2.0x3.0) screw that secures the wireless bracket to the system board [2].

3. Lift the wireless bracket and disconnect the wireless antennas [3, 4].

50 Removing and Installing

4. Remove the single (M2.0x4.0) screw that secures the display cable bracket to the system board [1]

5. Lift away the display bracket [2].

NOTE: The screw securing the display cable bracket also secures the left IO bracket to the system board, as a result

removal of the display cable bracket leaves the left IO bracket unsecured. Technicians should therefore, ensure that

the left IO bracket is not moved or lost during any subsequent disassembly processes.

6. Peel back the adhesive tape, open the lock and disconnect the display cable [3], [4].

Removing and Installing 51

7. Open the system to 180 degrees and place the computer on a flat surface, with the display hinges facing up.

8. Remove the six (M2.5x5.0) display hinge bracket screws that secure the display assembly to the system [1].

9. Lift the display assembly away from the system [2].

52 Removing and Installing

Installing display assembly

Steps

1. Place the chassis on a plane surface.

2. Align the display assembly with the screw holders on the system [1].

3. Replace the six (M2.5x5.0) display hinge bracket screws that secure the display assembly to the system [2].

Removing and Installing 53

4. Lift the system and close the display.

5. Connect the display cable to the connector on the system board [1].

6. Affix the adhesive tape to secure the display cable to the system [2].

7. Place the display cable bracket to secure the display cable [3].

8. Replace the single (M2.0x4.0) screw that secures the display cable bracket to the system [4].

54 Removing and Installing

9. Connect the EMR cable to the connector on the system board [1].

10. Connect the wireless antennas to the wireless module [2].

11. Place the wireless bracket to secure the wireless antennas and replace the single (M2.0x3.0) screw that secures the wireless bracket

to the system [3, 4].

Removing and Installing 55

Next steps

1. Install the battery.

2. Install the base cover.

3. Install the microSD card.

4. Follow the procedure in after working inside your computer.

Display panel-Touch

Removing display panel-Touch

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

5. Remove the display assembly.

Steps

1. Using a plastic scribe, carefully pry open the display panel starting from the pry points located above the left and right hinges [1].

2. Continue to work your way up through the left and right side of the panel [2].

56 Removing and Installing

3. Carefully flip the display panel over.

4. Gently peel back the adhesive tape securing the display cable on the back of the display panel [1].

5. Peel of the rubber spacer covering the display cable [2].

6. Release the lock and disconnect the display cable from the connector [3], [4].

Removing and Installing 57

Installing display panel-Touch

Steps

1. Connect the display cable to the connector on the back of the display panel and secure the lock [1], [2].

2. Place the rubber spacer on top of the display cable and place the adhesive tape back to secure the display cable [3], [4].

58 Removing and Installing

3. Carefully flip the display over on to the display panel.

4. Press along the sides of the display until it locks in place.

Removing and Installing 59

Next steps

1. Install the display assembly.

2. Install thebattery

3. Install the base cover.

4. Install the microSD card.

5. Follow the procedure in after working inside your computer.

Camera

Removing camera

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

5. Remove the display assembly.

6. Remove the display panel.

Steps

1. Peel the adhesive tape that covers the camera cable connector and disconnect the camera cable from the connector [1].

2. Using a plastic scribe, peel off the camera module beginning from the top left side [2].

60 Removing and Installing

Installing camera

Steps

1. Align and place the camera to its slot in the display assembly [1].

2. Connect the camera cable to the connector on the display assembly [2].

Removing and Installing 61

Next steps

1. Install the display panel.

2. Install the display assembly.

3. Install the battery.

4. Install the base cover.

5. Install the microSD card.

6. Follow the procedure in after working inside your computer.

Display cable

Removing display cable

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

5. Remove the display assembly.

6. Remove the display panel.

7. Remove the camera.

Steps

1. Pull out the display cable and the rubber stopper from the hinge cap [1], [2].

62 Removing and Installing

2. Disconnect the camera cable from the camera module and unroute the cable.

3. Peel the adhesive tape that secures the display cable and lift the display cable away from the display back cover and antenna

assembly.

Removing and Installing 63

Installing display cable

Steps

1. Affix the adhesive tape to secure the display cable to the display back cover.

2. Route the display cable into the hinge cap and secure the rubber stopper [1],[2].

3. Connect the camera cable connector to the camera module [2].

4. Affix the adhesive tape to secure the camera cable connector [3].

64 Removing and Installing

Removing and Installing 65

Next steps

1. Install the camera.

2. Install the display panel.

3. Install the display assembly.

4. Install the battery.

5. Install the base cover.

6. Install the microSD card.

7. Follow the procedure in after working inside your computer.

Display hinges

Removing display hinge

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

5. Remove the display assembly.

6. Remove the display panel.

Steps

1. Rotate the left hinge and hinge cap upwards to the display cover as shown in the image below.

NOTE: Make sure you rotate only the hinges to the unlock the position, the hinge caps will not rotate until the hinges

are in the unlock position.

2. Pull the display cable and the rubber stopper out of the left hinge.

66 Removing and Installing

3. Remove the four (M2.0x3.0) screws and six (M2.5x2.5) screws that secure the display hinge to the display assembly [1].

4. Lift the display hinge away from the display cover [2].

Removing and Installing 67

Installing display hinge

Steps

1. Place the display hinge on the display cover [1].

2. Replace the four (M2.0x3.0) and six (M2.5x2.5) screws to secure the display hinge to the display cover [2].

68 Removing and Installing

3. Reroute the display cable and the rubber stopper back into the hinge cap.

Removing and Installing 69

Next steps

1. Install the display panel.

2. Install the display assembly.

3. Install thebattery.

4. Install the base cover.

5. Install the microSD card.

6. Follow the procedure in after working inside your computer.

Palm rest

Replacing palmrest assembly

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the microSD card.

3. Remove the base cover.

4. Remove the battery.

5. Remove the speakers.

6. Remove the keyboard.

7. Remove the IO board.

8. Remove the display assembly.

9. Remove the system board.

70 Removing and Installing

Steps

The component you are left with is the palmrest.

NOTE: The palmrest assembly cannot be further disassembled once all of the pre-removal parts procedures are

completed. If the touchpad frame, touchpad support bracket, touchpad mylar, touchpad module, touchpad cable,

conductive tape or thermal pad are malfunctioning and need to be replaced, replace the entire palm-rest assembly.

Next steps

1. Install the system board.

2. Install the display assembly.

3. Install the IO board.

4. Install the keyboard.

5. Install the speakers.

6. Install the battery.

7. Install the base cover.

8. Install the microSD card.

9. Follow the procedure in after working inside your computer.

Removing and Installing 71

Troubleshooting

Basic troubleshooting

This page contains all the information for Dell Chromebook 3100 2-in-1 basic troubleshooting.

NOTE: Refer to Google Help Center for the online troubleshooter.

NOTE: Resetting the Chromebook, also known as Powerwash, can be attempted before Recovering the Chromebook.

Recovering the Chromebook is the last resort.

Power issues

Table 5. Power issue

Power issues

Issue Possible solutions

Chromebook would not Power On

If the Chromebook will not turn on, follow these steps:

1. Remove all external devices.

a. If the Chromebook starts, reconnect devices one at a time

while restarting the computer to figure out which device is

causing the problem. You are done.

b. If the Chromebook still does not start or exhibits the same

problem, do not reconnect anything, and continue

troubleshooting.

2. The battery life might be too low. Plug the Chromebook into

the AC adapter and let it charge for at least an hour and try

turning it on again.

NOTE: When a new Chromebook is used for the first

time, the battery is still in shipping mode. To resolve

this issue, turn off the Chromebook and plug in the

AC adapter and turn on the Chromebook again.

3. Depending on the Chromebook you have, you may see a power

indicator light close to the charging port. If you have let the

Chromebook charge and the light is not coming on, perform a

hard reset.

NOTE: You can perform a hard reset by pressing

Refresh + Power.

4. Use a different AC adapter with the same power voltage.

5. Remove the AC adapter, and turn on with the battery power

only.

Display issue

Table 6. Display issue

Display issue

Issue Possible solutions

Screen is Blank

If the Chromebook's screen is blank, try the following

troubleshooting steps to resolve the issue, checking to see if the

screen turns on after each step:

72 Troubleshooting

Display issue

1. Make sure that the Chromebook is on. If you are using the

battery, plug the Chromebook in and press the power button.

2. Restart the Chromebook by holding the power button down

until the device turns off, then turn it back on again.

3. Reset or Recover the Chromebook.

Audio, screen, and camera issues

Table 7. Audio, screen, and camera issues

Audio, screen, and camera issues

Issues Possible solutions

Audio issues

If you hear static, or the volume from the speakers is low when

attempting to listen to audio:

1. Make sure that the device is not muted. Try adjusting the

volume.

2. Try rebooting the Chromebook.

3. Try playing audio from various sources, including YouTube and

audio files stored locally on the Chromebook.

If the speakers are not responding when attempting to listen to

audio:

1. Unplug the device from all cables (USB, headphones, and

displays).

2. Try playing audio from various sources, including YouTube and

audio files stored locally on the Chromebook.

3. Try rebooting the Chromebook.

4. If audio still does not respond, try to Reset or Recover the

Chomebook.

Screen issues

If the screen is not operating properly (images are too dark or no

image is appearing):

1. Try adjusting the brightness with the brightness keys at the top

of the keyboard.

2. In the status area in the bottom-right of the screen, check the

display and make sure there are no issues with a mirrored or

extended display.

3. Try rebooting the Chromebook

4. If the screen issues persist, try to Reset or Recover the

Chomebook.

Camera issues

If the camera is not operating properly (blurry images or poor

performance):

1. Check that the camera is not being blocked or covered by a

privacy screen or other obstruction.

2. Try using different apps that use the camera. Try a Google+

Hangout or the onboard camera app

3. Try rebooting the Chromebook

4. If the camera issues persist, try to Reset or Recover the

Chomebook.

Troubleshooting 73

Bluetooth issue

Table 8. Bluetooth issue

Bluetooth issue

Issue Possible solutions

Bluetooth issues

If you run into issues while attempting to pair or use a Bluetooth

device with the Chromebook, try the following steps to resolve the

issue:

1. First, make sure that the Bluetooth device you are trying to pair

is supported by the Chromebook.

2. Try disabling and re-enabling Bluetooth connectivity from the

status area in the lower-right corner.

3. Try restarting the Chromebook.

4. If you are still encountering issue with bluetooth, try to Reset or

Recover the Chomebook.

Touchpad and Hotkeys issues

Table 9. Touchpad and hotkeys issues

Touchpad / Hotkeys issues

Issue Possible solutions

Touchpad not responding

If the touch pad has stopped responding, try the following steps to

resolve the issue: Try moving the cursor after each step:

1. Tap the Esc key several times.

2. Drumroll the fingers across the touch pad for a few seconds.

3. Restart the Chrome OS by holding down the power button

until the device turns off, and then turn it back on again.

4. If the cursor still does not move when using the touch pad, try

logging in from the Guest account using the tab key to

navigate.

5. If users experience touch pad issues with the account that is

not the owner (primary) account, delete the user account and

re-create it. Again, use the tab key to navigate.

6. If none of the above steps work, try to Reset or Recover the

Chomebook.

Top row of keys (Hotkeys) not responding

If a hotkey (like the volume or brightness keys) are not responding,

try the following troubleshooting steps, making sure to test the

keys after each one:

1. If the affected key is volume or brightness, check to make sure

you are not at the upper or lower limit for that setting.

2. If the backward or forward buttons do not work, check that

the same icons in a web browser are not grayed out. For

example, if the back button on a web page is grayed, this is

because the browser is not aware of a page to move backward

to.

3. Restart the Chrome OS by holding down the power button

until the device turns off, and then turn it back on again.

4. Try using the keys in the Guest account.

5. If users experience hotkey issues with the account that is not

the owner (primary) account, delete the user account and re-

create it.

6. If none of the above steps work, try to Reset or Recover the

Chomebook.

74 Troubleshooting

Chrome OS issue

Table 10. Chrome OS issue

Chrome OS issues

He’s Dead, Jim! error message

If the Chromebook becomes slow or unresponsive, and the He's

Dead, Jim! error message appears, the system could be running

low on memory.

NOTE: If you terminated the process using Google

Chrome's Task Manager, the system's task manager, or

with a command line tool, this message will appear as

well.

1. If the page was not ended intentionally, reload the page to

continue. If the message continues to appear, try closing

inactive tabs or other programs to free up more memory.

2. If issue persists, please see He's Dead, Jim! from Google

knowledge base.

Chrome OS is missing or damaged

If the Chromebook does not start and displays the message,

Chrome OS is missing or damaged. Please insert a recovery

USB stick into the USB ports on the device:

Perform a system recovery. See performing Recover Chromebook

for more information.

Chrome OS stops responding and nothing moves on the computer

display

If the Chrome OS stops responding and nothing moves on the

computer display:

1. Turn off the computer.

2. Disconnect all peripheral devices, and remove all USB devices

and media cards.

3. Disconnect the AC adapter.

4. Press and hold the power button for 10 seconds.

5. Reconnect the AC adapter, and turn on the system.

6. If issue persists, please perform a Reset or Recover the

Chromebook.

Lost / Forget Sign in password (Chrome OS)

If you lost/forget the sign-in password to the Chromebook:

1. Check if this is a managed device (Enterprise enrolled device).

a. If this is a managed device, please contact the

administrator to have them reset the password via Google

Admin Console.

b. If this is not a managed device, please proceed with the

following steps:

2. Sign in as guest or use a different PC.

3. Open an internet browser, and navigate to https://

www.google.com/accounts/recovery/

4. Select I do not know my password, and then enter the email

address that you use to sign in to Google.

5. Click Continue and follow the on-screen instructions to reset

the password.

Other Chromebook lock up or freeze symptoms that are not listed

here

If none of the above symptoms match the Chromebook’s issue,

refer to Google Help Center for the online troubleshooter and more

help.

Troubleshooting 75

CROSH

This topic covers the information that you need to know for the Chrome Shell (CROSH). CROSH and the Google Chrome URL commands

provide some troubleshooting tools, information, and advanced settings.

The Chrome OS does not support ePSA, Dell BIOS, the F12 boot menu, or DellConnect. There are no preboot diagnostics. All

troubleshootings must be done inside the OS. Chrome Shell (CROSH) and the Chrome URL commands provide some troubleshooting

tools, information, and advanced settings. CROSH is a command line interface similar to the Linux BASH or Windows command (cmd.exe)

terminals. Chrome OS is based on Linux, but CROSH does not recognize most Linux commands. The most useful commands for

troubleshooting are memory test, storage_test_1, storage_test_2, ping, and tracepath. Ping works differently than it does in Windows. By

default, it repeats until you press <Ctrl> + <C>, and it does not show any statistics. The tracepath command is similar to the Windows

traceroute command. A detailed explanation of the commands can be viewed below, by typing help, or help_advanced in CROSH.

1. Open the Chrome browser.

2. Press <Clrl> + <Alt> + <T> The interface appears as shown in the screenshot below:

3. Type in the CROSH command for diagnostics. Type 'help' for a list of available commands. Type help_advanced to display a

complete list of commands for debugging purposes

Alternately, refer to CROSH Commands for the list of the CROSH commands available for diagnostics.

CROSH commands

The table below lists the available commands in Chrome Shell (CROSH).

Table 11. Help commands

Command Purpose

exit Exits the CROSH Shell.

help Displays this help.

help_advanced Displays the help for more advanced commands, which are used

for debugging.

ping [-c count] [-i interval] [-n] [-s packetsize] [-W waittime] — Sends

ICMP ECHO_REQUEST packets to a network host. If it is "gw",

then the next hop gateway for the default route is used. It works

like the ping command on other operating systems. Press <Clrt> +

<C> to stop the ping process or halt any other command in

CROSH.

ssh [optional args...] — Starts the ssh subsystem if invoked without

any arguments. "ssh <user> <host>", "ssh <user> <host> <port>",

"ssh< user>@<host>". or "ssh <user>@<host> <port>" connect

without entering the subsystem

76 Troubleshooting

Command Purpose

ssh_forget_host Removes a host from the list of known ssh hosts. This command

displays a menu of known hosts and prompts for the host to

forget.

top Sets the chaps debug logging level. No arguments start verbose

logging

Table 12. Advanced help command

Command Purpose

battery_test[<test length>] Tests the battery discharge rate for a given number of seconds. No

argument defaults to a 300 s test.

bt_console [<agent capability>] Enters a Bluetooth debugging console. The Optional argument

specifies the capability of a pairing agent the console provides; see

the Bluetooth Core specification for valid options.

chaps_debug [start|stop|<log_level>] Sets the chaps debug logging level. No arguments will start

verbose logging.

connectivity Shows connectivity status.

experimental_storage<status|enable|disable> Enables or disables experimental storage features.

ff_debug [<tag_expr>] [--help] [--list_valid_tags] [--reset] Adds and removes flimflam debugging tags.

memory_test Performs extensive memory testing on the available free memory.

modem <command> [args...] Interacts with the 3G modem. Run modem help for detailed help.

modem_set_carrier carrier-name Configures the modem for the specified carrier.

network_diag[--date] [--link] [--show-macs] [--wifi] [--help] [--

wifi-mon] <host>

Performs a suite of network diagnostics and saves a copy of the

output to your download directory

network_logging <wifi|cellular|ethernet> Enables a predefined set of tags useful for debugging the specified

device.

p2p_update [enable | disable] Enables or disables the peer-to-peer (P2P) sharing of updates over

the local network. This will both attempt to get updates from other

peers in the network and shares the downloaded updates with

them. Run this command without arguments to see the current

state.

rlz < status | enable | disable> Enables or disables RLZ.

rollback Attempts to roll back to the previous update cached on your

system. Only available on non-stable channels and non-enterprise

enrolled devices. Please note that this will power wash your device.

route [-n] [-6] Displays the routing tables.

set_apn [-n <network-id>] [-u <username>] [-p <password>]

<apn>

Sets the APN to use when connecting to the network specified by

<network-id>. If <network-id> is not specified, use the network-id

of the currently registered network.

set_apn - c Clears the APN to be used, so that the default APN is used instead.

set_arpgw <true | false> Turns on the extra network state checking to make sure the

default gateway is reachable.

set_cellular_ppp [-u <username>] [-p <password>] Sets the PPP username and/or password for an existing cellular

connection. If neither -u nor -p is provided, this shows the existing

PPP username for the cellular connection.

set_cellular_ppp -c Clears any existing PPP username and PPP password for an

existing cellular connection.

sound <command> <argument> Low level sound configuration. Can be used to play/record audio

samples and enable beam forming on Pixel. sound beamforming

<on|off > will enable/disable the feature. sound record

Troubleshooting 77

Command Purpose

[duration] will start recording. sound play <filename> plays the

recorded audio samples

storage_status Reads storage device SMART health status, vendor attributes, and

error logs.

storage_test_1 Performs a short offline SMART test.

storage_test_2 Performs an extensive readability test.

syslog <message> Logs a message to system log.

tpcontrol{status | taptoclick [on|off] sensitivity [1-5] | set

<property>< value>} tpcontrol {syntp [on|off]}

Allows the user to manually adjust advanced touchpad settings.

tracepath [-n] <destination>[/port] Traces the path/route to a network host.

update_over_cellular [enable|disable] Enables or disables the auto updates over cellular networks. Run

without arguments to see the current state.

upload crashes Uploads available crash reports to the crash server.

wpa_debug [<debug_level>] [--help] [--list_valid_level] [--reset] Sets the wpa_supplicant debugging level.

xset m [acc_mult[/acc_div] [thr]] xset m default Tweaks the mouse acceleration rate.

xset r rate [delay [rate]] Tweaks the autorepeat rates. The delay is the number of

milliseconds before autorepeat starts. The rate is the number of

repeats per second.

xset r [keycode] < on|off > Turns autorepeat on/off. If a keycode is specified, it affects only

that key. If not specified, it affects global behavior.

Chrome commands

Chrome:// pages contain experimental features, diagnostic tools, and detailed statistics. They are hidden in Chrome's user interface.

Chrome://about page lists all Chrome's internal pages. To view all the commands, type chrome://about in the Chrome browser URL

as shown below:

Table 13. Chrome browser shortcuts

Purpose Browser Shortcut Explanation

System Information chrome://system/ "Who am I".. BIOS version, and so on

Basic Connectivity Diags chrome://diagnostics/ Test for NIC and Internet connection

Chrome Information chrome://version More "Who am I" type of stuff

78 Troubleshooting

Purpose Browser Shortcut Explanation

Create Recovery USB Stick chrome://imageburner/ Google's version of DBAR/DBRM

Chrome Flags chrome://flags Experimental features beyond the scope of

what Dell supports

Memory Troubleshooting chrome://memory View running processes and memory

utilization

Module Load chrome://conflicts Shows conflicts of all modules loaded by

Chrome

Chrome Sync Status chrome://syncchrome://sync-

internals

Allows troubleshooting of connected

accounts

Connectivity Troubleshooting chrome://net-internals Comprehensive network/connectivity

diagnostics, including DNS analysis,

Waterfall and Bandwidth diagnostics, and so

Histogram chrome://histograms Actual work and I/O audit

Credits chrome://credits References to all module/libs contributions

and their respective wiki/license URLs

Crash Reporting chrome://crashes Shows detailed crash report, if the feature

was enabled

Apps RAM Utilization chrome://appcache-internals Detailed memory usage for apps/

extensions, especially handy for 2 GB

Chromebooks

Following are the 12 most helpful chrome:// commands that you should know:

1. chrome://flags : From here you can enable some of the experimental features that are hidden in the Google Chrome browser. Please

note that as mentioned on this page, since these are experimental, these might not work as expected and might cause issues. Enable

these features, and use it at your own risk.

2. chrome://dns: This displays the list of host names for which the browser will pre-fetch the DNS records.

Troubleshooting 79

3. chrome://downloads: This is also available from the Menu > Downloads. Shortcut key is Ctrl+J.

4. chrome://extensions: This is also available from the Menu > Tools > Extensions.

5. chrome://bookmarks: This is also available from the Menu > Bookmarks > Bookmark Manager. Short cut key is Ctrl+Shift+O.

80 Troubleshooting

6. chrome://history: This is also available from the Menu > History. Short cut key is Ctrl+H.

7. chrome://memory: This will redirect to “chrome://memory-redirect/”. This will display the memory used by the Google Chrome

browser. This also displays all the process related to browser with their PID, process name, and the memory it takes.

Troubleshooting 81

8. NOTE: Net-internals events viewer and related functionality has been removed. Please use Chrome://net-export to

save netlogs and the external Catapult netlog_viewer to view them.

chrome://net-internals: This displays all networking related information. Use this to capture network events generated by the

browser. You can also export this data. You can view DNS host resolver cache. One of the important features in this feature is “Test”.

If a URL failed to load, you can go to “chrome://net-internals” > click on “Tests” tab > type that URL which failed, and click on “Start

Test”, which does some test and report you why that URL failed. chrome://plugins/.

9. chrome://quota-internals: This gives information about the disk space quote used by the browser, including the breakdown of how

much space the individual websites took under temporary files.

10. chrome://sessions: This displays the number of sessions and magic list that are currently running.

82 Troubleshooting

11. chrome://settings: This is also available from the Menu > Options (on Windows), and Menu > Preferences (on Linux). From here

you can control various browser related settings.

12. chrome://sync-internals: This gives information about the Chrome sync feature, including the Sync URL used by Google, and sync

statistics.

Troubleshooting 83

Commonly used CROSH command

This page contains information about the most commonly used CROSH commands to diagnose the Dell Chromebook 3100 2-in-1.

Below are some of the most commonly used CROSH commands to troubleshoot a hardware issue.

NOTE: CROSH storage_test_1 and storage_test_2 are not supported on the eMMC storage device.

Check battery charging status

The Chrome Shell (CROSH) includes a simple battery health diagnostic test. This is to confirm that the battery is charging and to check

on the battery health and discharge rate. Follow the instruction provided to check on the battery charging status:

1. Connect the AC adapter to the Chromebook and a power outlet.

2. Turn on, and sign in to the Chromebook.

3. Open the Chrome browser.

4. Press CTRL + ALT + T to open CROSH.

5. Type battery_test 1 into CROSH, and then press Enter.

84 Troubleshooting

6. Check the result to confirm that the battery is charging.

Check battery health

Follow the steps to evaluate the health of the Chromebook battery, and check the discharge rate:

1. Disconnect the AC adapter from the Chromebook.

2. Turn on and sign in to Chromebook.

3. Open the Chrome browser.

4. Press CTRL + ALT + T to open CROSH.

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5. Type battery_test 1 into CROSH, and then press Enter.

6. A screen displays the current battery health and discharge rate.

• If the Battery health percentage is greater than 50%, the battery is within the expected wear limits.

• If the Battery health percentage is equal to or less than 50% and the battery is less than a year old, the battery is outside expected

wear limits and might need to be replaced.

• If the test results show that Battery is Unknown, the battery might need to be replaced.

Checking memory

Follow the steps below to perform a memory check for Chromebook:

NOTE: This will approximately take 20 minutes to complete the test, and it also depends on the capacity of the memory.

1. Turn on and sign in to Chromebook.

2. Open the Chrome browser.

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3. Press CTRL + ALT + T to open CROSH.

4. Type memory_test into CROSH, and then press Enter.

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5. A diagnostic screen displays the result of the memory test passed without any errors.

Example of a memory test failure.

Checking network status

If you are having trouble connecting to the Internet, use the steps in one or more of the following sections to test the network adapter:

Follow the instruction to gather the information about the network and diagnose the network errors.

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1. Turn on and sign in to Chromebook.

2. Open the Chrome browser.

3. Press CTRL + ALT + T to open CROSH.

4. Type network_diag into CROSH, and then press Enter.

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5. Wait while CROSH performs a set of network diagnostic tests. A diagnostic screen displays the results of the network adapter health

test.

6. The diagnostic test log is saved as a.txt (plain text) file in the Files app.

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7. If the diagnostic test returns a failure message, make sure the Wi-Fi adapter is enabled and connect to a network.

Reset Chromebook

This page contains all information about resetting Dell Chromebook 3100 2-in-1.

All local user data stored on the Chromebook can be cleared by resetting it to its original factory state (also known as Powerwash).

This step might be helpful if you want to reset owner permissions or if you are experiencing issues with your user profile.

NOTE: All data stored on your Chromebook such as downloaded files, photos, owner permissions, and saved networks,

will be deleted for all accounts when performing a factory reset. After clearing this data, you will be guided through the

initial setup again. Resetting your device will not affect your accounts themselves, or any data synced to these

accounts.

NOTE: Do not follow the instructions below if you're using a managed Chrome device, as you will not be able to re-enroll

your device after powerwashing it.

Follow these steps to reset your Chromebook to its original factory state:

1. Click the status area in the lower-right corner, where your account picture appears.

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2. Click Settings as highlighted from the screenshot below.

3. Click Show advanced settings to expand the menu.

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4. Click the Powerwash button.

5. Click Restart when prompted.

You can also reset your Chromebook from the sign-in screen by holding down the keys Ctrl+Alt+Shift+R and clicking Restart. (If

you are signed in to your Chromebook, sign out first before you press on Ctrl+Alt+Shift+R, then click Restart. Once the

Chromebook is restarted, click Reset.)

After you restart the Chromebook, you should now see the setup screen. Follow the instructions on the screen to set up your

Chromebook again. Make sure you sign in with your primary Google Account, because this account is set as the owner account.

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Recovery Chromebook

This page contains information about recovering Dell Chromebook 3100 2-in-1.

Recovering the Chromebook

Install a new version of the Chrome operating system on your Chromebook by going through the recovery process. You may want to go

through this process if you are having problems updating your Chromebook or if it stops working.

NOTE: All account information and data stored on your Chromebook, such as photos, downloaded files, and saved

networks, will be deleted. Owner privileges for your primary account will also be reset. However, the actual Google

Accounts and any data synced to these accounts are not affected by the recovery process. After the recovery process is

complete, you will be guided through the initial setup again.

Prerequisites:

Before starting this process, you need the following:

• A Chrome device, Windows, Mac, or the Linux computer with administrative rights.

• A 4 GB or larger USB flash drive or SD card that you do not mind clearing.

Step 1- Check for the Chrome OS is missing or damaged message

If you see this message, you can first try to perform a hard reset on your Chromebook by pressing Refresh + Power. If you still see this

message after performing a hard reset, please proceed to Step 2.

If you see the Chrome OS verification is turned off message, refer to Chrome OS verification is turned off section below.

Step 2- Create the recovery USB flash drive or SD card

Insert a USB flash drive or SD card into your computer and follow the instructions below

Table 14. USB flash drive or SD card

Operating System Instructions

Chrome Device Instructions

Create a recovery flash drive by using the Image Burner. The tool

may not be available in all languages.

1. Type chrome://imageburner into the omnibox (browser's

address bar) .

2. Run the tool and follow the instructions that appear on your

screen.

NOTE: When recovering your Chromebook, make sure to

create the recovery flash drive on the same model.

Windows Instructions

1. Click this link to download the Recovery Tool. If you are a

network administrator for your school, business, or

organization, click this link to download the Recovery Tool: 2. 3.

2. Run the tool and follow the instructions that appear on your

screen.

3. After you recover your Chromebook, you must format your

USB flash drive or SD card using the Recovery Tool. If you do

not format your USB flash drive or SD card, you will not be able

to use all the storage space on your external device.

Additionally, your USB flash drive or SD card may not be

recognizable by Windows.

Mac Instructions

Create a recovery flash drive by using the Recovery Tool. The tool

may not be available in all languages.

1. Click this link to download the Recovery Tool.

2. Run the tool and follow the instructions that appear on your

screen.

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Operating System Instructions

After the process is complete, you might see an alert saying your

USB drive or SD card is unreadable. If this fails, try removing and

reinserting your USB drive or SD card. Your USB drive or SD card

should now be ready to use for recovery.

Linux Instructions

Create a recovery flash drive by using the Recovery Tool. The tool

may not be available in all languages.

1. 1.Click this link to download the Recovery Tool.

2. Modify the script permissions to allow execution with the

following command: $ & sudo chmod 755

linux_recovery.sh

3. Run the script with root privileges with the following

command:$ sudo bash linux_recovery.sh

4. Follow the prompts from the tool to complete building the

operating system image.

Reinstall the Chrome Operating System

1. Start your Chromebook.

2. When the Chrome OS is missing or damaged screen appears, insert the USB flash drive or SD card you created into the USB port

or SD card slot on your Chrome device

3. Wait for the Chromebook to boot up from the flash drive

4. Follow the instructions that appear on the screen.

5. On successful installation of the Chrome operating system, you will be prompted to remove the USB flash drive or SD card.

6. Remove the USB flash drive or SD card when prompted, and your Chromebook will automatically restart.

You should now be able to start your Chromebook as normal. Because the data stored on your Chromebook has been cleared, you will

need to go through the initial setup again. Make sure you sign in with your primary Google Account, because this account will be set as the

owner account.

Chrome OS verification is turned off Message

By default, Chromebooks are set to the normal user mode. If you've set the user mode to developer mode instead, you'll see a screen with

the message "Chrome OS verification is turned off" when you start up. Use the developer mode if you want to test your own version of

the Chrome operating system.

Press Ctrl+D to enter developer mode. If you press the space bar instead, you'll see a screen asking to recover your device.

Troubleshooting Tips

Table 15. Troubleshooting tips

Question Solution

I am unable to recover my Chromebook To help ensure that you are running the latest version of Chrome

OS once you recover your Chromebook, we recommend creating

the recovery media with the latest version of Chrome OS and avoid

using recovery media that may contain an older version of the

operating system.

An error message An unexpected error has occurred. Try the following steps:

1. Confirm that you successfully completed all instructions exactly

as specified in Step 2: Create the recovery USB flash drive or

SD card above.

2. Try using a different USB stick or SD card.

3. If the problem persists, contact Google Chrome support team.

An error message You are using an out-of-date Chrome OS

recovery image.

You should download an up-to date recovery image. Simply follow

all the instructions exactly as specified in Step 2 above.

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Question Solution

You successfully recovered your Chromebook but now you can not

use your USB or SD card with Windows

After you have completed recovery, you need to format your USB

or SD card using the recovery tool.

You successfully recovered your Chromebook but now Windows

does not recognize the whole size of the USB or SD card used for

recover.

After you have completed recovery, you need to format your USB

or SD card using the recovery tool.

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Getting help

Topics:

•Contacting Dell

Contacting Dell

Prerequisites

NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice,

packing slip, bill, or Dell product catalog.

About this task

Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services

may not be available in your area. To contact Dell for sales, technical support, or customer service issues:

Steps

1. Go to Dell.com/support.

2. Select your support category.

3. Verify your country or region in the Choose a Country/Region drop-down list at the bottom of the page.

4. Select the appropriate service or support link based on your need.

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Table of Contents

DELL 3100 2-in-1 User Manual

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