Excellent manual, detailed, very useful! Exactly what I needed, I'd recommend it to all who need it. Although images are scanned easily readable and explicit. A valuable tool product at a price more than modest, take it with confidence and you will not regret it!
This is an excellent information source. Great quality and tons of info regarding technical service for the Technics SH8065.
Text excerpt from page 8 (click to view)
3. SERVO CIRCUIT (1) Unstable Video in PB MODE
Unstable Video in PB Mode. YES Does the Noise level of the screen change periodically? YES Do the CTL pulses appear at the IC501 Pin97? YES Does the CFG waveform appear at the IC501 Pin87? YES On tracking do the CTL pulses move? YES Does the Video Envelope waveform appear at the IC501 Pin9? YES Replace the IC501. NO Refer to âWhen the Y signal doesnât appear on the screen in PB Modeâ. NO Replace the IC501. NO Is adjusting the height of the CTL Head accurate? NO Readjust the height of the CTL Head.
Refer to â(2) No 12VA of Power sectionâ Do the Drum PWM Pulses appear at the IC501 Pin76? YES Arenât the foil patterns and the Components between IC501 Pin76 and PMC01 Pin12 short? NO Do the DFG Pulses appear at the IC501 Pin90? NO YES Do the Drum PWM Pulses appear at the IC501 Pin76? YES NO Replace the IC501. NO Arenât the foil patterns and the Components between IC501 Pin 90 and PMC01 Pin11 short? NO YES Do the DFG Pulses appear at the PMC01 Pin11? NO Replace the Cap M.
(2) When the Drum Motor (2) doesnât run.
When the Drum Motor doesnât run,
Does 12V appear at the PMC01 Pin8? YES Does 2.8V appear at the PMC01 Pin12? YES Check the connector (PMC01) and the Drum Motor Assây.
Arenât the connecting patterns and the Components between IC501 Pin76 and PMC01 Pin12 short? 3-7