Table Of Contents - Lenovo A516 Service Manual

Repair Manual of Lenovo A516 Mobile Phone
APPEARANCE .............................................................................................................................. 6
1.
2. LAYOUT OF MAIN BOARD ........................................................................................................ 6
3. BASEBAND ................................................................................................................................... 9
3.1 LCD
DISPLAY
3.1.1 No display on screen after power-on ................................................................................. 10
3.1.2 LCD backlight without lighting ......................................................................................... 11
3.2 C
AMERA DEFECTS
3.2.1 Rear camera defects .......................................................................................................... 13
3.2.2 Front camera defects ......................................................................................................... 14
3.3 R
ING AND VIBRATION
3.3.1 No vibration ....................................................................................................................... 15
3.3.2 No ring ............................................................................................................................... 16
3.4 C .............................................................................................................................. 17
HARGING
3.4.1 No charging display after plugging the charger in ............................................................ 17
3.4.2 Charging shown but not full charging ................................................................................ 18
3.5 K
EYBOARD AND KEYBOARD BACKLIGHT
3.5.1 Abnormal operation of side keys ........................................................................................ 19
3.5.2 Abnormal operation of CTP keyboard ............................................................................... 20
3.6 C ................................................................................................................................. 21
ALLING
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 P -
OWER ON FAILURE
3.8 T
OUCH SCREEN FAILURE
3.9 LCD
ON WHEN CLOSE TO THE EAR DURING THE CALL
4. RADIO FREQUENCY (RF) ........................................................................................................ 25
4.1 S D
OFTWARE OWNLOAD
4.2 P
RODUCTION CALIBRATION
4.2.1 AFC calibration..................................................................................................................... 27
4.2.2 AGC ....................................................................................................................................... 28
4.2.3 APC ....................................................................................................................................... 29
4.3 F
AULT IN COMPLETE SET TEST
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 WCDMA
FORECAST
4.4.1 RSSI_Cal ............................................................................................................................... 34
4.4.2 TPC_Cal ................................................................................................................................ 34
4.5 WCDMA
COMPREHENSIVE TEST
4.5.1 ACLR or SEM ........................................................................................................................ 36
Content
......................................................................................................................... 10
................................................................................................................... 13
.............................................................................................................. 15
................................................................................................................ 23
......................................................................................................... 24
F .................................................................................................. 26
AILURE
........................................................................................................... 27
/ ........................................................................................ 31
REWORK
...................................................................................................................... 34
................................................................................................... 36
................................................................................ 19
; LCD
OFF WHEN AWAY FROM THE EAR
3
. 25