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