Samsung SM-X818U Assembly instructions

www.samsung.com
REPAIR GUIDE
SM-X818U
SM-X816B
SM-X810
English. Rev.1.0

2
Table of Contents
Usage Notices
4 Precautions for Repair
5 ESD (Electrostatic Discharge) Precautions
6 Instructional Icons
Software Update
7 Updating Software through FOTA
7 Software Update Failure
7 Updating Software through Smart Switch
8 Recovering from a Software Update Failure
8 Recovering on Another Computer
9 Performing a Factory Data Reset
Quality Test
11 Quality Test Using the Samsung Members App
11 Device Diagnostics
12 Test Items
Calibrations
25 Calibrations
25 Used Parts and Calibration Functions in Supported Models
26 Using the Self Repair Assistant App
31 Optical Fingerprint Sensor Calibration
34 Resetting the Battery Cycle Count
37 Range Sensor Calibration
39 Touch Screen Panel Calibration
41 Speaker Calibration

3
Table of Contents
43 Under-display Camera Calibration (Fold Models Only)
45 Digital Hall Sensor Calibration (Fold and Flip Models Only)
Exploded View and Parts List
48 Exploded View
49 Parts List
Disassembly and Assembly
51 Tools for Disassembly and Assembly
54 Fasteners (Adhesives and Materials) for Assembly
57 Disassembly for Replacement
58 SIM Card Tray Remove
60 Button Remove
63 Screen Remove
78 Camera Remove
86 Charging Port Remove
92 Main Board Remove
99 Speaker Remove
116 Vibrator Motor Remove
117 SIM Card Socket Remove
119 5G mmWave Antenna Remove
121 Back Cover Module
122 Reassembly for Replacement
123 5G mmWave Antenna Assembly
124 SIM Card Socket Assembly
125 Vibrator Motor Assembly
126 Speaker Assembly
147 Main Board Assembly
152 Charging Port Assembly
159 Camera Assembly
166 Screen Assembly
176 Button Assembly
180 SIM Card Tray Assembly

Usage Notices
4
Usage Notices
All functionality, features, specifications, and other device information provided in
this document, including but not limited to, benefits, design, pricing, components,
performance, availability, and capabilities of the device are subject to change without
notice. Samsung reserves the right to alter this document or the device described herein
at any time, without obligation to provide notification of such changes.
Precautions for Repair
Samsung is not liable for any damage or defect determined to be caused by repair by
a non-authorized carrier, self repair or non-professional repair of the device. Samsung
is not liable for any resulting damage to the device, or any injury or other device safety
issue caused by any attempt to repair the device which does not follow these repair and
maintenance instructions.
Any damage to the device or defect caused by an attempt to repair the device by any
person other than a Samsung certified carrierwill not be covered by the warranty.
•
Use only demagnetized tools that are specifically designed for small electronic
repairs, as most electronic parts are sensitive to electromagnetic forces.
•
Use only high quality screwdrivers when servicing devices. Low quality screwdrivers
can easily damage the heads of screws.
•
Always use genuine replacement parts. Third-party replacement parts may not
function properly and could cause a fire or injury.
•
Some parts, such as sensors (laser AF/proximity/fingerprint), the rear camera,
the TSP (touch panel), speakers, and other components, may need calibration to
guarantee their performance after repair.
•
The performance of the device’s water and dust resistance cannot be guaranteed
when it is repaired by the user or another unskilled worker.
•
If you need to access the failure data of your device or need to get a more detailed
diagnosis, visit a Samsung Service Center.
•
If you need to replace unsold parts, visit a Samsung Service Center and receive
further instruction.
•
Before conducting repairs, remember to make backup copies of all important data
stored in the device.

Usage Notices
5
•
Make sure to wear the appropriate safety equipment before carrying out repairs.
Samsung is not responsible for injuries that may occur because of not wearing the
proper safety equipment. Refer to Tools for Disassembly and Assembly for a list of
tools that you will need for assembling and disassembling the device.
•
Repair the device in a safe place.
•
Before repairing the device, make sure the device is turned off. To turn off the
device, press the Volume Down button and the Side button at the same time, or open
the notification panel and tap the Power icon.
•
If the device is damaged, emits smoke, or if you smell something burning, stop using
the device immediately and contact Samsung.
•
It is recommended to use safety equipment such as glasses, gloves, and a mask
when repairing the device.
•
Be careful not to damage the device when removing the back cover.
•
Before assembly, ensure that there are no screws or foreign objects around the
battery.
•
During assembly, check if there are any abnormalities before reattaching the back
cover, and be careful not to damage the battery by hitting or denting it. If the battery
is damaged, visit a Samsung Service Center.
•
Do not place the device directly into a microwave and heat it.
•
Before repairing your device, make sure its battery is fully discharged.
•
Visit www.samsung.com to view the device information, related material, and safety
information.
ESD (Electrostatic Discharge) Precautions
It is the sudden flow of electricity between two electrically charged objects caused by
contact, an electrical short, or dielectric breakdown. ESD can cause negative effects on
mobile phone, especially electrical parts.
•
It is recommended to use ESD safety (Anti-static) equipment such as an anti-static
wrist strap and gloves, and an ESD safe mat when repairing the device.
•
Increase the airflow to the work area to decrease the chance of accidental static
electricity discharges, as the potential for static electricity discharge may be
increased in low-humidity environments, such as air-conditioned rooms.

Usage Notices
6
Instructional Icons
Warning: situations that could cause injury to yourself or others
Caution: situations that could cause damage to your device or other equipment
Notice: notes, usage tips, or additional information

Software Update
7
Software Update
Updating Software through FOTA
Update your device’s software through the firmware over-the-air (FOTA) service. You can
also schedule software updates.
Launch the
Settings app and tap Software update
→
Download and install .
•
Install now : Install updates.
•
Schedule install : Set the time to install updates automatically.
•
You may incur additional charges when updating the software through a mobile
network.
•
If the latest software has been downloaded to the device, these options will not
appear.
Software Update Failure
If your device becomes disconnected from a network before the update is complete, the
update may fail. Reconnect to a network and complete the update.
Updating Software through Smart Switch
You can use Smart Switch to update your device’s software to the latest
version. You must download the desktop version of the Smart Switch app from
www.samsung.com/smartswitch.
•
This feature may not be supported on some devices or computers.
•
Limitations apply. Visit www.samsung.com/smartswitch for details. Samsung
takes copyright seriously.
1 On the computer, visit www.samsung.com/smartswitch to download Smart Switch.
2 On the computer, launch Smart Switch .
3 Connect your device to the computer using the device’s USB cable.
4 Click Update .

Software Update
8
5 Read the on-screen instructions and click Continue .
6 Read the precautions about the update and click OK .
7 Read and agree to the terms and conditions.
The update will start.
Recovering from a Software Update Failure
If a software update is interrupted because of an error on your device or computer, your
device may fail to operate normally. If this occurs, you can perform a factory data reset
on your device for emergency recovery.
Before performing the factory data reset, remember to make backup copies of all
important data stored in the device. Samsung is not responsible for the loss of data
stored in the device.
1 Disconnect your device from the computer and launch Smart Switch again on the
computer.
2 Click
→
Emergency Software Recovery and Reset .
The device list will appear.
3 Click the device that experienced a software update error and click Device reset
→
OK .
The device will perform a factory data reset.
Recovering on Another Computer
If the emergency recovery process continues to fail on the computerwhere the software
update failed, you can repair your device on another computer using the recovery code.
This will include a factory data reset of your device.
•
Before performing the factory data reset, remember to make backup copies of
all important data stored in the device. Samsung is not responsible for the loss
of data stored in the device.
•
The recovery code can be found only on the computerwhere the software
update has failed.
1 On the computer where the software update has failed, launch Smart Switch .
2 Click
→
Emergency Software Recovery and Reset .

Software Update
9
3 On the devices list, click the device that failed to update the software and check the
recovery code.
4 On another computer, launch Smart Switch .
5 Click
→
Emergency Software Recovery and Reset
→
Emergency code recovery .
6 Enter the recovery code and click OK .
7 Follow the on-screen instructions to put your device into recovery mode and
complete the emergency recovery.
Performing a Factory Data Reset
The factory data reset restores the device’s default settings. This erases all data,
including files and downloaded apps, from the device.
Before performing the factory data reset, remember to make backup copies of all
important data stored in the device. Samsung is not responsible for the loss of data
stored in the device.
Make sure your device’s battery level is sufficient, as losing power during a factory
reset may result in system problems.
1 Launch the Settings app and tap General management
→
Reset
→
Factory data
reset
.
2 Read the on-screen instructions and check
which account you are signed in with.
If your device is signed in to your Google
account, log out of your Google account. If
you do not log out of your Google account,
logging in to another account after the
factory data reset will not be possible,
because your device will be locked.

Software Update
10
3 Tap Reset
→
Delete all .
All data will be deleted when rebooting.
During a factory data reset, the device may repeat rebooting and the logo may be
displayed for a long time.