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VX9100
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved
Only for training and service purposes
Checking Flow
Checking Flow
Check pin49, 50, 51 at U108
Check if there is any major difference referring
To Figure 4.1.1 (c), (d)
Start
Control signal is Ok . See next page
to check RF signal path .
YES
NO
Redownload S/W
NO
Check pin49, 50, 51 at U108
Check if there is any major difference referring
To Figure 4.1.1 (c), (d)
Control signal is Ok . See next page
to check RF signal path .
YES
Replace Main B /D
Waveform
Waveform
Figure 4.1.1 (c)
Figure 4.1.1 (d)
Summary of Contents for VX9100 Maroon
Page 135: ...1 VX9100 Assembly Disassembly Diagram ...
Page 136: ......
Page 137: ......
Page 138: ...2 VX9100 Block Circuit Diagram Main Key Pad FPCB ...
Page 139: ...Block Diagram ...
Page 141: ...Circuit Diagram Main Key Pad ...
Page 142: ...Main Board Circuit ...
Page 149: ...Keypad Circuit ...
Page 151: ...3 VX9100 Part List Main Key Pad FPCB ...
Page 161: ...4 VX9100 Component Layout ...
Page 164: ...5 VX9100 BGA Pin Map ...
Page 165: ...BOTTOM VIEW Unit mm USED NOT USED 1 MSM6550A U202 A1 Index Mark ...
Page 167: ...3 MAX9775EBX T U301 TOP VIEW USED NOT USED ...