Lenovo A516 User manual

Service Manual of
Lenovo A516 Mobile
Phone
LENOVO

Repair Manual of Lenovo A516 Mobile Phone
2
Document name Service Manual of Lenovo A516 Mobile
Phone
Version: V100
Date: May 28, 2013
Document No.:
Status:
Preface
This manual is intended for online repair guidance and after-sale repair guidance of
LenovoA516 mobile phone produced by the Company
The content of this manual will be upgraded according to the needs of technology
development.
Copyright
The copyright of this manual belongs to Lenovo Mobile; anyone who reproduces this
manual without written consent of the Company shall bear legal responsibility.

Repair Manual of Lenovo A516 Mobile Phone
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Content
1. APPEARANCE..............................................................................................................................6
2. LAYOUT OF MAIN BOARD........................................................................................................6
3. BASEBAND...................................................................................................................................9
3.1 LCD DISPLAY .........................................................................................................................10
3.1.1 No display on screen after power-on.................................................................................10
3.1.2 LCD backlight without lighting ......................................................................................... 11
3.2 CAMERADEFECTS...................................................................................................................13
3.2.1 Rear camera defects ..........................................................................................................13
3.2.2 Front camera defects .........................................................................................................14
3.3 RING AND VIBRATION..............................................................................................................15
3.3.1 No vibration.......................................................................................................................15
3.3.2 No ring...............................................................................................................................16
3.4 CHARGING..............................................................................................................................17
3.4.1 No charging display after plugging the charger in ............................................................17
3.4.2 Charging shown but not full charging................................................................................18
3.5 KEYBOARD AND KEYBOARD BACKLIGHT................................................................................19
3.5.1 Abnormal operation of side keys........................................................................................19
3.5.2 Abnormal operation of CTP keyboard ...............................................................................20
3.6 CALLING.................................................................................................................................21
3.6.1 No voice heard from the other side during the call ............................................................21
3.6.2 No voice heard from your side during the call ...................................................................22
3.7 POWER-ON FAILURE................................................................................................................23
3.8 TOUCH SCREEN FAILURE.........................................................................................................24
3.9 LCD ON WHEN CLOSE TO THE EAR DURING THE CALL;LCD OFF WHEN AWAY FROM THE EAR.25
4. RADIO FREQUENCY (RF)........................................................................................................25
4.1 SOFTWARE DOWNLOAD FAILURE ..................................................................................................26
4.2 PRODUCTION CALIBRATION...........................................................................................................27
4.2.1 AFC calibration.....................................................................................................................27
4.2.2 AGC.......................................................................................................................................28
4.2.3 APC.......................................................................................................................................29
4.3 FAULT IN COMPLETE SET TEST/REWORK........................................................................................31
4.3.1 Switch spectrum & PVT template with excessive standard...................................................31
4.3.2 High Frequency Error...........................................................................................................32
4.3.3 High Phase Error..................................................................................................................32
4.3.4 Power output problems .........................................................................................................33
4.4 WCDMAFORECAST......................................................................................................................34
4.4.1 RSSI_Cal ...............................................................................................................................34
4.4.2 TPC_Cal................................................................................................................................34
4.5 WCDMACOMPREHENSIVE TEST...................................................................................................36
4.5.1 ACLR or SEM........................................................................................................................36

Repair Manual of Lenovo A516 Mobile Phone
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4.5.2 ILPC comprehensive test abnormal ......................................................................................36
4.5.3 FrequencyErr ........................................................................................................................36
5. STRUCTURE ASSEMBLY ........................................................................................................37
5.1ASSEMBLY PROCESS SEQUENCE OF LENOVO A516 MAIN BODY ................ОШИБКА!ЗАКЛАДКА НЕ
ОПРЕДЕЛЕНА.
5.2 PRECAUTIONS IN LENOVO A516 MAIN BODYASSEMBLY.. ОШИБКА!ЗАКЛАДКА НЕ ОПРЕДЕЛЕНА.
5.3 PRECAUTIONS IN DISASSEMBLY OF LENOVO A516 MAIN BODY FOR REPAIRING................ОШИБКА!
ЗАКЛАДКА НЕ ОПРЕДЕЛЕНА.

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