Read LG 22LT560C (CHASSIS:LA2AA) Service Manual online
- 14 -
TROUBLESHOOTING
1. Power-up boot check
Check stand-by Voltage.
JK3300 1pin : 24V
Check L3304, L3308
+24V/+15V, +24V_LED line
Short Check
Check X201 clock
24 MHz
Replace X201
Check IC3304/3305/3310 Output Voltage
IC3304 : +1.1V_VDDC
IC3305 : +1.5V_DDR
IC3310 : +2.5V_Normal
Check Stand by Voltage
C3375 : +3.5V_ST
Replace IC3307
Check Panel VCC Voltage
C3355 : +5V(22inch) or +12V(26inch)
Check Q3305 / Q3307
and other passive elements
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board
Replace LCD Module
ok
ok
ok
ok
ok
ok
No
ok
Replace Adaptor
ok
Check L3317
and other passive elements
ok
Check AVDD_NODIE voltage
L206
Replace L206
ok
Check +12V/+15V voltage
C3372 (+12V)
ok
Check RL_ON_BUFFER Signal
Check L3316
and other passive elements
ok
Replace IC3306
ok
Check +5V_Normal voltage
L3309 (+5V)
Check L3305
and other passive elements
ok
Replace IC3300
Check +3.3V_Normal voltage
L3318 (+3.3V)
Check Q3311
and other passive elements
ok
Check POWER_ON/OFF_1 Signal
Replace Q3312
ok
ok
ok
Check L3314
and other passive elements
ok
Replace IC3304 / IC3305 / IC3310
Check LED driver Power Voltage
C3368 : +24V
ok
Check Q3308 / Q3309
and other passive elements
ok
Replace LCD Module
ok
Replace LCD Module
Check Indicator LED On (RED)
No
No
No
No
No
No
No
No
No
No
Click on the first or last page to see other 22LT560C (CHASSIS:LA2AA) service manuals if exist.