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NO RASTER
CHECK +B at D807 cathode Normal Abnormal
Is the voltage at pin37 & 12 of IC512 8V? Yes No Check &replace IC512 No Check &replace IC512 Yes Check T451 & each pin voltage No Check &replace IC512 Yes Is the voltage at pin37 & 12 of IC512 8V? Check /replace Q802 Check pin40 of IC512(H-out) Yes Check Q402 collector waveform No No Check the in/out of IC841,IC842
Check FUSE of AC line OK Check the voltage of C806 No 254~380V Check u-COM pin20 low? Check the voltage of pin4, IC803.
Open
Check /replace Fuse,D801,IC801 D810,D811,D812 0V Check /replace Fuse,D801,IC801 D810,D811,D812
Check /replace D806,IC803 R807,R815
