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The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.
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Welcome. The scheme is clearly helped me to repair. Worth to download it.
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Excellent manual, very clear, technical specification provided, useful information regarding adjustment and set up.
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fast and easy and exactly what I was looking for. Not the cheapest but value for money after all.
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The manual for the Sansui P-L75 was not one of the more informative turntable manuals around but for $5 it was helpful enough.
2. SYSTEM/KEY CIRCUIT (1) AUTO STOP
Auto Stop YES Does the SW25 waveform appear at the IC501 Pin105? YES Do the T-UP Reel Pulses appear at the IC501 Pin49? YES Replace the IC501. NO Do T/UP Reel Pulses appear at the Q514 Base terminal ? YES Replace the T/UP Reel Sensor (RS501). NO Does 5.2V appear at the RS501? YES NO NO Check the Drum Motor signal.
Check the Power Circuit.
(2) The unstable loading of a Cassette tape
The unstable loading of a Cassette tape YES Is 12V applied to the PMC01 Pin8? YES Does the �H� signal appear at the IC501 Pin30 during inserting the CST ? YES Does the �L� signal appear at the IC501 Pin72 during inserting the CST? NO YES Check the Deck Mechanism. Check the IC501 Pins68, 69, 70, 71. Check the CST SW and the peripheral circuitry. NO Is 5.3V applied to the R544 ? YES NO NO Check the Power.
Refer to SMPS 5.3VA troubleshooting.
Caution : Auto stop can occur because Grease or Oil is dried up
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