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ELECTRICAL TROUBLESHOOTING GUIDE
OPTICAL FUNCTION
Refer to Power Part Troubleshooting
Check IC501 pin M19
Input waveform
Check R587
Replace the related part.
YES
NO
OK
4. OPTICAL FUNCTION
Replace the related part.
Check R549 3.3VA Voltage
YES
Check JK202
Check R202
YES YES
NO
NO
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