Service Manual
TCL Communication Technology Holdings Ltd.
Rev.: 1.0
TCL 30 5G _T776H _H1 Service Manual V1.0
Page: 11/20
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.
7) Upgrade successfully.
6
Function Test with Support Centre
1) Check that the Micro 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 SIM card or enter the phone
NCK code if available.
4) Open
the “Support Centre” app->Click “Agree”->“Hardware diagnosis”->“START TESTING” -
>Authorize the permissions required for diagnostics->Follow the instructions to test
