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Acurate informations inside the SM and I could repair my old Sansui SC-3330 without any problems. Thanks.
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I used it to repair a NAD 7030, but unfortunately, the 7045 is different !
But documentation was useful.
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Content A4 and A3 format pages. Exactly what I needed to restore my old receiver.
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Content A4 and A3 format pages. Exactly what I needed to restore my old receiver.
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Thanks you very much for this "hard to find" service manual.
Will help a lot in repairing this receiver.
B.
No disc
.Power on
Check loading Part.
Does tray open or close?
NO
Push Pick-up to inner track to the end by hand.
YES Does PMD03 Pin 7 change high to low? YES Pressing the open/close key repeatedly, check the voltage of IC2M1 Pins 13, 14 change 0V to 5V YES Does the voltage change at PMD04 Pins 1, 2 more than 2V on the basis of 3.8V? YES
NO
DECK assembly is defective. (Limit sw)
NO check µ-COM Part.
NO Replace IC2M1.
DECK assembly is defective. Fig.1. SLED Driver waveform
Does the pick-up slide inner or outer track? YES
NO
Check SLED Driver output. IC201 Pin 88 IC2M1 Pins 28, 29.
IC201 Pin 88 no output : IC201 is defective IC2M1 Pin 18 no output : IC2M1 is defective
Fig.2. Focus Driver waveform NO Check Focus Driver output. (IC201 Pin 83, IC2M1 Pins 37, 38) IC201 Pin 83 no output : IC201 is defective IC2M1 Pins 1, 2 no output : IC2M1 is defective
Does the pick-up lens move up and down? YES Slide the pick-up to inner track.
END
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 $4.99 L56 NAD
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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