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Very easy site. Great service and quick release for download. Manuals are of good quality.
Joop - The Netherlands
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Very good manual, in depth and complete. Only criticism is that some of the circuit diagrams are slightly blurry and hard to follow for long periods of time, but this is to be expected. Perfect for any maintenance required. Also contains the wiring diagrams of the control cable for constructing extensions.
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Received a quick response, material was exactly what it was supposed to be. The service did everything I expected it to do. would use service again.
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Detailed SONY CFD980 Service Manual at an easy to find one stop shopping. Make my radio hobby technically interesting. Thanks.
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Excellent service from Owner-Manuals.com, good prices and quick turn around. The supplied PDF was good enough quality to be enlarged sufficiently to read component values.
1-10
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Trouble shooting chart
No video picture, no sound.
Check whether all the voltages from the power board to the decoder board are normal.
No Check the loaded circuit
CVBS(R1 point) waveform
Yes
Check if the reset circuit consisting of CE3, D6 and R21 is normal (at a high level for tens of milliseconds, then constantly at 3.3V).
No Change CE3, D6 and R21.
27Mhz waveform
Yes Crystal oscillator Y2 and
Check whether there is 27MHz signal output.
No
peripheral components are defected or eroded.
Yes
Check if there is 135MHz signal output on R31.
No
Check whether short-circuit or bad solder on U1,U3
SDRAM(R31 PCLK) waveform
No
Yes
Check if short-circuit and bad solder exist on Pin 60
Check U2. No
Yes Yes Reconnect the component in
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