Chapter5
54
TROUBLE SHOOTING
Test flow chart of test SIM card
Could not read
SIM
Check if points
of SIM card are
OK
Clean or
replace
SIM
socket
NO
End
OK
Check if SIM card
Is invalid
Yes
Replace
SIM card
Connect to the voltage
regulator and check if the
current is OK
Power may be damaged.
Test if the voltage PIN of
SIM card isn’t 2.8V and
if the third, forth, fifth
pins have pulse voltage
YES
MT6739 may have
fault
YES
NO
NO
NO
Replace MT6739
YES
Содержание VIVO ONE
Страница 1: ...BLU Model VIVO ONE VIVO ONE SERVICE MANUAL ASSEMBLY DISASSEMBLY 1 ...
Страница 2: ...Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL EXPLODED DIAGRAM 2 ...
Страница 14: ...DISASSEMBLY AND ASSEMBLY SERVICE TOOLS 14 ...
Страница 16: ...Chapter 2 SYSTEM BLOCK DIAGRAM 16 ...
Страница 17: ...Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT Circuit instruction of CPU 22 ...
Страница 18: ...23 ...
Страница 19: ...24 ...
Страница 20: ...25 ...
Страница 21: ...26 ...
Страница 22: ...27 ...
Страница 23: ...28 ...
Страница 24: ...CPU input of the keypad 29 ...
Страница 25: ...The circuit of SIM1 SIM2 T FLASH 30 ...
Страница 26: ...EMMC MCP 31 ...
Страница 27: ...Bluetooth WIFI GPS FM 32 ...
Страница 28: ...Power supply port 33 ...
Страница 29: ...29 ...
Страница 30: ...30 ...
Страница 31: ...31 ...
Страница 32: ...Battery connector 37 ...
Страница 33: ...Charger Circuit 38 ...
Страница 34: ...I O connector 39 ...
Страница 35: ...40 RF TX RX ...
Страница 36: ...41 ...
Страница 37: ...42 ...
Страница 38: ...43 REC MIC ...
Страница 39: ...44 HEADSET REC MIC ...
Страница 40: ...LCD POWER LCD BACKLIGHT 45 ...
Страница 41: ...Rear Camera Connector 46 ...
Страница 42: ...47 Front Camera Connector ...
Страница 43: ...48 Flash LED ...
Страница 44: ...49 ALPS G SENSOR ...
Страница 45: ...50 Finger print ...
Страница 46: ...Chapter4 PCB Layout chart PCB layout SIDE A 51 ...
Страница 47: ...PCB layout SIDE B 52 ...
Страница 48: ...53 ...