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ASUS GA401IV-HA040T User Manual
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E17967
First Edition / March 2021
SERVICE MANUAL
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Service Manual
COPYRIGHT INFORMATION
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by
any means, except documentation kept by the purchaser for backup purposes, without the express
written permission of ASUSTeK COMPUTER INC. (“ASUS”).
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES
OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
(INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION
OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identication or explanation and to the
owners’ benet, without intent to infringe.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL
USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE
CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY
ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND
SOFTWARE DESCRIBED IN IT.
Copyright © 2021 ASUSTeK COMPUTER INC. All Rights Reserved.
LIMITATION OF LIABILITY
Circumstances may arise where because of a default on ASUS’ part or other liability, you are entitled to
recover damages from ASUS. In each such instance, regardless of the basis on which you are entitled to
claim damages from ASUS, ASUS is liable for no more than damages for bodily injury (including death)
and damage to real property and tangible personal property; or any other actual and direct damages
resulted from omission or failure of performing legal duties under this Warranty Statement, up to the
listed contract price of each product.
ASUS will only be responsible for or indemnify you for loss, damages or claims based in contract, tort or
infringement under this Warranty Statement.
This limit also applies to ASUS’ suppliers and its reseller. It is the maximum for which ASUS, its suppliers,
and your reseller are collectively responsible.
UNDER NO CIRCUMSTANCES IS ASUS LIABLE FOR ANY OF THE FOLLOWING: (1) THIRD-PARTY CLAIMS
AGAINST YOU FOR DAMAGES; (2) LOSS OF, OR DAMAGE TO, YOUR RECORDS OR DATA; OR (3) SPECIAL,
INCIDENTAL, OR INDIRECT DAMAGES OR FOR ANY ECONOMIC CONSEQUENTIAL DAMAGES (INCLUDING
LOST PROFITS OR SAVINGS), EVEN IF ASUS, ITS SUPPLIERS OR YOUR RESELLER IS INFORMED OF THEIR
POSSIBILITY.
SERVICE AND SUPPORT
Visit our multi-language website at https://www.asus.com/support/
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Table of Contents
Disclaimer ..................................................................................................................... 4
Safety precautions .....................................................................................................4
Major components .................................................................................................... 6
Installation tools.........................................................................................................7
Removing the compartment cover ..................................................................... 7
Cover screw map .......................................................................................................9
Disconnecting the battery .....................................................................................10
Installing a RAM module ......................................................................................... 11
Installing an M.2 card ...............................................................................................13
Wiring and connection diagrams ........................................................................15
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Disclaimer
ASUS is not responsible for direct, indirect, intentional or unintentional
damages resulting from improper installation and operation.
Safety precautions
• Keep liquids or moisture away from your Notebook PC before
installing or removing any components.
• Ensure to place your Notebook PC on a stable surface before
installing or removing any components.
• Detach the clip or ap before removing the signal cables to
prevent damage.
• Disconnect the power plug by pulling the plug evenly to avoid
damage. Ensure to connect the signal cables in the correct
orientation.
• Disconnect all power cables and remove the battery pack (if
applicable) before cleaning your Notebook PC with liquid
detergent to avoid risk of electric shock.
• Disconnect all power cables and remove the battery pack (if
applicable) before installing or removing any components. Ensure
to read and follow the instructions in the manual.
Service Manual
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• Before handling components, use a grounded wrist strap or touch
a safely grounded object to avoid damaging them due to static
electricity.
• Keep liquids or moisture away from your Notebook PC to avoid
short circuits.
• Hold components by the edges to avoid touching the ICs.
• Ensure to properly install all the components before connecting
the AC power.
• Do not use power adapters or batteries from other devices to
reduce the risk of injury to persons due to re or explosion.
Use only certied power adapters or batteries supplied by the
manufacturer or authorized retailers.
• Ensure to install the correct screw models on your Notebook PC
to prevent damage.
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Motherboard with ports and connectors
Fan/Cooling radiator Keyboard RAM module
SSD module LCD panel module
Power adapter Battery and power connector
Major components
USB Type-C connector
HDMI connector
Headphone/headset/
microphone jack
DC IN connector
USB Type-A connector
USB Type-A connector
USB Type-C connector
NOTE: The illustration is for reference only.
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Installation tools
Screwdriver Plastic blade Tweezers
Removing the compartment cover
A. Remove the screw(s) from the Notebook PC’s compartment cover.
B. Loosen the Pop-open Screw without removing the screw from
the cover.
C. Pull out the compartment cover and remove it completely from
your Notebook PC.
Pop-open Screw
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To reattach the compartment cover:
A. Align and reattach the cover of the compartment.
B. Secure the cover using the screw(s) you removed earlier.
C. Tighten the Pop-open Screw.
Pop-open Screw
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Cover screw map
M2 X 9.5 (10PCS)
M2 X 4.5 (3PCS)
M2.5 X 6 (1PC Pop-open Screw)
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Service Manual
Disconnecting the battery
A. Remove the compartment cover.
NOTE: For more details, refer to the Removing the compartment cover
section in this manual.
B. Disconnect the cable from the battery connector.
To connect the battery, align and connect the cable to the battery
connector before you reattach the compartment cover.
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Installing a RAM module
Upgrade the memory capacity of your Notebook PC by installing
a RAM (Random Access Memory) module in the memory module
compartment. The following steps show you how to install a RAM
module into your Notebook PC:
WARNING! Disconnect all the connected peripherals, any telephone or
telecommunication lines and power connector (such as external power
supply, battery pack, etc.) before removing the compartment cover.
IMPORTANT! Visit an authorized service center or retailer for information
on RAM module upgrades for your Notebook PC. Purchase RAM modules
from authorized retailers of this Notebook PC to ensure maximum
compatibility and reliability.
NOTE:
• The appearance of your Notebook PC’s bottom view and RAM
module may vary per model but the RAM module installation
remains the same.
• It is recommended that you install the RAM module under
professional supervision. You may also visit an authorized service
center for further assistance.
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Service Manual
A. Remove the compartment cover and disconnect the battery.
NOTE: For more details, refer to the Removing the compartment cover and
Disconnecting the battery sections in this manual.
B. Align and insert the RAM module into the RAM module slot.
C. Push down the RAM module until it clicks in place.
30° angle
notches
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Installing an M.2 card
Refer to the following steps when installing a compatible M.2 card in
your Notebook PC:
IMPORTANT! Purchase your M.2 card from authorized retailers of this
Notebook PC to ensure maximum compatibility and reliability.
WARNING! Disconnect all the connected peripherals, any telephone or
telecommunication lines and power connector (such as external power
supply, battery pack, etc.) before removing the compartment cover.
NOTE:
• The appearance of your Notebook PC’s bottom view and M.2 card
may vary per model but the module installation remains the same.
• It is recommended that you install the M.2 card under professional
supervision. You may also visit an authorized service center for
further assistance.
• The M.2 2280 slot does not support M.2 SATA SSD.
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Service Manual
A. Remove the compartment cover and disconnect the battery.
NOTE: For more details, refer to the Removing the compartment cover and
Disconnecting the battery sections in this manual.
B. Align and insert the M.2 card into the module slot.
C. Secure the M.2 card in place using the bundled screw(s).
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Wiring and connection diagrams
Top View
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1. Display connector 11. Touchpad connector
2. DC IN connector 12. WLAN connector
3. HDMI connector 13. Matrix LED connector
4. USB Type-C connector 14. SSD connector
5. Headphone/headset/
microphone jack 15. RTC connector
6. Tweeter connector 16. USB Type-A connector
7. Speaker connector 17. Fan connector
8. Battery connector 18. DDR4 DIMM socket
9. Keyboard connector 19. Power key connector
10. Keyboard backlight connector
Bottom View