
L1&L2 Service Manual TCLCommunication Ltd.
Venice 5048A_I_U_Y & 5148A_I Level 1 & Level 2 Service Manual
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Content
1. General Information about the product..........................................................................3
1.1. Product Specifications ..............................................................................................3
1.2. Product Label ........................................................................................................... 6
1.2.1. Commercial Label ........................................................................................... 6
1.2.2. CU label ..........................................................................................................7
1.2.3. IMEI label print instruction...............................................................................9
1.3. Accessories .............................................................................................................. 9
2. Repair process...............................................................................................................10
2.1. L1 repair process.....................................................................................................11
2.2. L2 repair process....................................................................................................12
3. Maintenance preparation...............................................................................................14
3.1. Handset & PC......................................................................................................... 14
3.2. ESD safety..............................................................................................................14
4. Basic inspection.............................................................................................................15
4.1. Engineer functionalities........................................................................................... 15
4.2. Warranty check.......................................................................................................15
4.2.1. Visual Mechanical inspection for handset and accessories........................... 16
4.2.2. Proof of purchase.......................................................................................... 16
4.2.3. IMEI Check....................................................................................................17
4.2.4. Humidity sensitive label.................................................................................18
4.2.5. Liquid damage indicator policy...................................................................... 18
4.3. Product test ............................................................................................................ 19
4.3.1. Recovery mode............................................................................................. 19
4.3.2. Factory Reset................................................................................................ 19
4.3.3. Function test (MMI test & SDT test) .............................................................. 20
4.3.4. RF test instruction ......................................................................................... 21
5. Software download ........................................................................................................21
6. Disassembly and reassembly Venice...........................................................................22
6.1. Disassembly tool..................................................................................................... 22
6.2. Disassembly process.............................................................................................. 23
6.3. Reassembly process .............................................................................................. 23
7. Dual camera repair process..........................................................................................27
7.1. Dual camera on Venice .......................................................................................... 27
7.2. Dual Camera repair process...................................................................................28
7.3. “DUALCAM VERIFY” test instruction...................................................................... 28
8. L2 trouble shooting........................................................................................................31
9. PCBA exchange .............................................................................................................31
10. Functional Re-test..........................................................................................................32