LG 22LV2500 Service Manual page 40

1. Power-up boot check
Check Adater power.
JK7500 : 24V
ok
Check Micom Voltage
IC1002 pin 48 : +3.5V_ST
ok
Check X1002 clock
32.76 KHz
ok
Check IC1002 PIN 36(RL_ON).
RL_ON : 3.3V
ok
Check IC7502/6/7, IC403/7 Output Voltage
IC7502 : 12V
IC7506 : 3.3V
IC7507 : 5.0V
IC403 : 1.26V
IC407 : 1.5V
ok
Check X201 Clock
24 MHz
ok
Check LVDS Power Voltage
Q7506 : 12v(26")
ok
Check Mstar LVDS Output
ok
Check Inverter Control & Error Out
P7501 11 pin : Low
P7501 12 pin : High
ok
Change Module
Copyright ⓒ 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
No
Replace Adapter
No
Replace IC7503
No
Replace X1002
No
Re-download
Micom software.
No
No
Replace X201
No
Replace Q7506
No
Replace Mstar(IC101) or Main Board
No
Check Module
No
Replace Micom(IC1002) or Main board
Replace IC7502/6/7, IC403/7
LGE Internal Use Only