LG KG800 - Page 89

4. TROUBLESHOOTING
- 90 -
START
EL sheet is torn ?
NO
YES
EL sheet will work properly.
R214 at KEY PCB
is well-soldered?
YES
Replace EL sheet
NO
YES
Voltage of R214 is high?
Resolder R214
NO
Replace U103
Replace U700
Does The wave form pin 6 of U202
at KEY PCB similar picture 1-1?
NO
YES
Checking Flow
Picture 1-1
Pk to pk : about 220V
Frequecy : about 400Hz