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1. Power-up boot check
Check Adapter power.
JK7500 : 24 V
ok
Check stand-by Voltage.
C7538 : +3.5 V_ST
ok
Check X201 clock.
24 MHz
ok
Check 7509(RL_ON).
RL_ON : 3.3 V
ok
Check IC402/3/7 Output Voltage.
IC7502 : 12 V
IC7507 : 5.0 V
IC403 : 1.1 V
IC407 : 1.5 V
Q403 : 3.3 V
ok
Check LVDS Power Voltage.
Q7506 : 12 V(26")
ok
Check LED Driver
P10000(LGD), P10001(NONLGD)
P10000, P10001 3 Pin : 24 V
P10000, P10001 4 Pin : 24 V
ok
Check Mstar LVDS Output.
ok
Change Module.
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TROUBLESHOOTING
No
Replace Adapter.
No
Replace IC7503.
No
Replace X201.
No
Re-download software.
No
Replace IC7502/7, IC403/7, Q403.
No
Replace Q7506.
No
Replace IC10000.
No
Replace Mstar(IC101) or Main Board.
- 14 -
No
Replace Mstar(IC101) or Main board.
LGE Internal Use Only
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