TCL 20 R 5G Service Manual Download Page 12 | Manualshive

Page: 12 / 19

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Service

Manual

TCL

Communication Ltd.

Rev.: 1.0

TCL 20 R 5G T767H Service Manual V1.0

Page: 12/19

Confidential and proprietary information contained in this repair guide is subject to change without notice.

Distribution, transfer, copy of any content or data in this document without the written permission of TCL is strictly prohibited.

4) Open

the “Support Centre” app->Click ”Agree”->”Hardware diagnosis”->”START TESTING” and

following the prompt.

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Summary of Contents for 20 R 5G

Page 1: ...cifications and other product information provided in this document including but not limited to the advantages aesthetics price components performance availability and capacity of the product are subject to change without notice TCL will not be responsible for any damage to the product injury or other safety issue caused by the result of repair by an unauthorized service provider user repair or u...

Page 2: ...wo ways below for your reference 5 4 Factory Reset 6 4 1 Remove Google account before doing factory reset 6 4 2 Factory Reset 6 4 3 Recovery mode 6 5 Software Update 8 5 1 Software update by FOTA 8 5 2 Software update by using Mobile Upgrade tool 8 6 Function Test with Support Centre 11 7 Troubleshooting 13 7 1 What should I do if my device reboots by itself 13 7 2 What should I do if my device sy...

Page 3: ...this may exceed the value of the device depending on level of damage 1 7 If you need detailed diagnosis please contact TCL authorized Repair Center 1 8 Do not remove damage heat short circuit or disassemble the battery If you need to replace the battery screen or motherboard go to a TCL authorized Repair Center for repair 1 9 Before any repair backup personal information and important data and the...

Page 4: ... Rear Camera 13 MP main camera AF 1 3 1 12μm F2 2 field of view 76 7 4P lens 2MP macro camera FF 1 5 1 75μm F2 4 field of view 85 3P lens 2MP depth camera FF 1 5 1 75μm F2 4 field of view 88 8 3P lens Front Camera 8 MP front camera FF 1 4 1 12μm F2 0 field of view 80 6 4P lens Battery 4500mAh standard Connectivity 2G bands GSM 850 900 1800 1900 3G bands UMTS B1 2 4 5 8 4G bands B1 3 5 7 8 20 26 28...

Page 5: ...ith minimum internet speed of 8Mb s 3 4 Backup the user data before repairing There are two ways below for your reference Method 1 Go to Settings Touch System Touch Backup this function may appear under different menus according to the type of device Activate Back up to Google Drive in the window which has now opened Touch Back up Now You need to add your Google account details first App data SMS ...

Page 6: ...setup the device with another Google account at initial setup after the factory reset and it will require you to login your previous signed in Google account It is recommended that you log out of the Google account You can go to Settings Account touch your google account REMOVE ACCOUNT touch REMOVE ACCOUNT touch OK to confirm 4 2 Factory Reset You can follow the below steps to perform factory rese...

Page 7: ...ransfer copy of any content or data in this document without the written permission of TCL is strictly prohibited Click through steps 1 Power off the device long press Power Key Volume up key until the LCD lights on 2 Press Volume key to select Wipe data factory reset and press Power key to confirm 3 Select Factory data reset and press Power key to confirm 4 Select Reboot system now and press Powe...

Page 8: ...obile device is updated wirelessly by the device s manufacturer Firmware runs in the background without any input from the user to make sure that the device s hardware runs properly Head to your device s Settings System Updates or System update 5 2 Software update by using Mobile Upgrade tool 1 download the SW upgrade tool Mobile_Upgrade_S_Gotu2_v1 1 9 from website https www tcl com global en serv...

Page 9: ...ntained in this repair guide is subject to change without notice Distribution transfer copy of any content or data in this document without the written permission of TCL is strictly prohibited 5 Click OK and disconnect your phone from USB cable when the tool pops up the prompt Please disconnect your device from the USB cable to proceed ...

Page 10: ...ial and proprietary information contained in this repair guide is subject to change without notice Distribution transfer copy of any content or data in this document without the written permission of TCL is strictly prohibited 6 Click Upgrade device and connect your phone to computer waiting for upgrade ...

Page 11: ...ta in this document without the written permission of TCL is strictly prohibited 7 Upgrade successfully 6 Function Test with Support Centre 1 Check that the SD card are inserted correctly 2 Power on the product to launch the auto test 3 If the product displays input NCK code this means the software is Network locked or SIM locked and can only be used with dedicated SIM card hence use the relevant ...

Page 12: ...prietary information contained in this repair guide is subject to change without notice Distribution transfer copy of any content or data in this document without the written permission of TCL is strictly prohibited 4 Open the Support Centre app Click Agree Hardware diagnosis START TESTING and following the prompt ...

Page 13: ...many apps running in the background or the system cache not being cleared may cause a system lag Touch the Menu key at the bottom corner of screen to view recently used applications Touch Clear all to close the tasks d Uninstall unused apps from time to time to ensure that your device has sufficient storage space e If the issue occurs in third party apps please uninstall the third party apps respo...

Page 14: ... Settings Security biometrics Fingerprint d Try to reset or update your device 7 5 What should I do if my device s battery drains under normal use a Check if the device is in a high or low temperature environment If yes we advise you to use it only under normal operating conditions b Deactivate Bluetooth Wi Fi or GPS when not in use c The battery drains quickly when playing games and watching vide...

Page 15: ...g applications GPS application 3D gaming video streaming etc c Reduce the brightness of the screen to lower the temperature d Avoid using your device while charging e Avoid using a protective case that does not dissipate heat Remove your protective case if your device heats up 7 8 What should I do if my device cannot power on a Charge the device with a TCL official charger for at least 30 minutes ...

Page 16: ...anual V1 0 Page 16 19 Confidential and proprietary information contained in this repair guide is subject to change without notice Distribution transfer copy of any content or data in this document without the written permission of TCL is strictly prohibited 9 Explode View ...

Page 17: ...Manual V1 0 Page 17 19 Confidential and proprietary information contained in this repair guide is subject to change without notice Distribution transfer copy of any content or data in this document without the written permission of TCL is strictly prohibited 10 Split View ...

Page 18: ...ervice Manual V1 0 Page 18 19 Confidential and proprietary information contained in this repair guide is subject to change without notice Distribution transfer copy of any content or data in this document without the written permission of TCL is strictly prohibited ...

Page 19: ... Connector Socket Battery Connector RF Connector 2M BTB Press Foam Side Key Furnished FPC Main Furnished FPC Fingerprint Furnished FPC Coin Vibrator FP CONDUCTIVE FOAM LCD BTB waterproof Foam Flash Spring Rubber Main FPC_BTB Rubber Audio Jack Rubber Cover RF Connector Audio Jack LCD FPC HOLE PET Front Camera Support SIDE KEY SPRING Proof Foam Battery Cover Adhesive tape Flash PCB Adhesive Camera L...

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