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Samsung SC-140 Service Manual
Also see for SC-140: User guideUser guide
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1No SLED operationMove pick-up out.Insert 2 FPC and power cord.SLED runs normally.YPick-up moves in?The below waveform is outputted inIC301 22Pin, 23pin ?NRefer to 'Check power source and initial state'NVoltage of IC501 4pin ,5pinin 5V?Check R506, R507,NR504 R512 soldering.After checking IC501soldering, no error,replace ICN YNN17The below signal is inputtedin CN503 A,A, B,B termial?YThe opposition signal is inputtedin CN503 A, A, B, B termial?YReplace SLED Motor.YSCR-140(A4)-en 99.3.15 9:48 PM ˘ ` 1 |
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