Samsung SM-G988B Montageanleitung

www.samsung.com

REPAIR GUIDE

SM-G988B

English. Rev.1.0

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

29 Optical Fingerprint Sensor Calibration

32 Resetting the Battery Cycle Count

35 Range Sensor Calibration

Table of Contents

Exploded View and Parts List

37 Exploded View

38 Parts List

Disassembly and Assembly

39 Tools for Disassembly and Assembly

42 Fasteners (Adhesives and Materials) for Assembly

43 Disassembly for Back Cover, Display, and Charging Port Replacement

44 SIM Card Tray Remove

45 Back Cover Remove

55 Wireless Charging Module and Bottom Speaker Remove

59 Charging Port Remove

61 Main Board Remove

65 Front Camera Remove

67 Vibrator Remove

68 Display Module

69 Reassembly for Back Cover, Display, and Charging Port Replacement

69 Preparing a New Display Module

71 Vibrator Assembly

72 Front Camera Assembly

74 Main Board Assembly

77 Charging Port Assembly

79 Wireless Charging Module and Bottom Speaker Assembly

82 Back Cover Assembly

84 SIM Card Tray Assembly

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

•

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

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

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

5 Read the on-screen instructions and click

Continue

6 Read the precautions about the update and click

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

→

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 computer where 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

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

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

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.

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