57
No display or
display abnormal
when powered on
Check if LCD is
broken
Replace
LCD
YES
Check if LCD interface
connects OK
Replace LCD/FPC
END
OK
Check if enable signals and MIPI signals
are normal or not
NO
YES
NO
Replace or
resolder MT6739
Test flowchart of no display or display abnormally.
Clean and resolder
LCD connector
NO
NO
Summary of Contents for VIVO ONE
Page 1: ...BLU Model VIVO ONE VIVO ONE SERVICE MANUAL ASSEMBLY DISASSEMBLY 1 ...
Page 2: ...Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL EXPLODED DIAGRAM 2 ...
Page 14: ...DISASSEMBLY AND ASSEMBLY SERVICE TOOLS 14 ...
Page 16: ...Chapter 2 SYSTEM BLOCK DIAGRAM 16 ...
Page 17: ...Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT Circuit instruction of CPU 22 ...
Page 18: ...23 ...
Page 19: ...24 ...
Page 20: ...25 ...
Page 21: ...26 ...
Page 22: ...27 ...
Page 23: ...28 ...
Page 24: ...CPU input of the keypad 29 ...
Page 25: ...The circuit of SIM1 SIM2 T FLASH 30 ...
Page 26: ...EMMC MCP 31 ...
Page 27: ...Bluetooth WIFI GPS FM 32 ...
Page 28: ...Power supply port 33 ...
Page 29: ...29 ...
Page 30: ...30 ...
Page 31: ...31 ...
Page 32: ...Battery connector 37 ...
Page 33: ...Charger Circuit 38 ...
Page 34: ...I O connector 39 ...
Page 35: ...40 RF TX RX ...
Page 36: ...41 ...
Page 37: ...42 ...
Page 38: ...43 REC MIC ...
Page 39: ...44 HEADSET REC MIC ...
Page 40: ...LCD POWER LCD BACKLIGHT 45 ...
Page 41: ...Rear Camera Connector 46 ...
Page 42: ...47 Front Camera Connector ...
Page 43: ...48 Flash LED ...
Page 44: ...49 ALPS G SENSOR ...
Page 45: ...50 Finger print ...
Page 46: ...Chapter4 PCB Layout chart PCB layout SIDE A 51 ...
Page 47: ...PCB layout SIDE B 52 ...
Page 48: ...53 ...