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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
Is it 19.2MHz? (Refer to
figure 4.2.2 (a))
NO
Start
Replace Main B /D
VCTCXO circuit is Ok . See next page
to check control signal .
The Problem ma y b e Logic part
R efer to Logic troubles hoot
YES
NO
NO
Is it 2.85 V? (Refer to
figure 4.2.2 (b))
Replace U107 and then check R111 , C 181 .
YES
Is it similar?
VCTCXO circuit is Ok . See next page
to check control signal .
YES
Check U107 pin3(TP1)
Check U107 pin4(TP2)
Waveform
Waveform
Figure 4.2.2 (a)
Figure 4.2.2 (b)
Содержание VX9100 Maroon
Страница 135: ...1 VX9100 Assembly Disassembly Diagram ...
Страница 136: ......
Страница 137: ......
Страница 138: ...2 VX9100 Block Circuit Diagram Main Key Pad FPCB ...
Страница 139: ...Block Diagram ...
Страница 141: ...Circuit Diagram Main Key Pad ...
Страница 142: ...Main Board Circuit ...
Страница 149: ...Keypad Circuit ...
Страница 151: ...3 VX9100 Part List Main Key Pad FPCB ...
Страница 161: ...4 VX9100 Component Layout ...
Страница 164: ...5 VX9100 BGA Pin Map ...
Страница 165: ...BOTTOM VIEW Unit mm USED NOT USED 1 MSM6550A U202 A1 Index Mark ...
Страница 166: ...2 HYC0SGH0MF3P 6S60E U300 Unit mm A1 Index Mark USED NOT USED BOTTOM VIEW All Pins assigned to Logic Signal and GND ...
Страница 167: ...3 MAX9775EBX T U301 TOP VIEW USED NOT USED ...
Страница 168: ...4 LP3922 U401 USED NOT USED BOTTOM VIEW ...
Страница 169: ...5 BD6085GUL U500 USED NOT USED BOTTOM VIEW ...