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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
START
Check battery voltage > 3.4V
Check the voltage of
the following port at U401
Charge of Change Battery and try again
NO
NO
NO
YES
YES
YES
NO
+1.275V_MSMC
+1.85V_MSMP1
+2.6V_MSMP2
+2.6V_MSMA
+2.85V_TCXO
Is the frequency of TCXO (U107)
19.2Mhz?
Replace TCXO (U107)
Check the VPWR voltage > 3.4V
NO
YES
Replace MSM (U202)
CVBATT Line
Replace PMIC (U401)
Logic level at PS_HOLD
Of U401=High?
Does it work properly?
NO
YES
download software
try again
Change the board
Change the board
Check VPWR Voltage >3.4V
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 ...