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Sweet! I won the item on eBay and couldn't adjust the geometry or even keep a steady picure. This guide has the full schematics (not available anywhere else as far as I could tell), and was a bargain for the wealth of knowledge it contains. I hooked it up to my testing equipment, tweaked a few potentiometers and got it playing videogames in no time. Thanks!
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It was just what I need to fix my old BMW's CD player. Very convenient also. Thank you.
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Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
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Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
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Good pdf of the service manual for this unit. Includes disassembly instructions, full schematics, board layouts, parts lists and diagnostic information. Some information is in the pdf twice (single pages, and split pages), but that could be how it was originally generated by panasonic, or perhaps the idea is to make it eaiser to put onto 8.5 x 11" pages.
Information was exactly what I needed. Delivery was overnight (less than 12 hours) and I was happy with the process.
21KF-80C
NO PICTURE, NO SOUND
Does the noise level increase at max. Contrast, Brightness and Sound
Noise increase but . No signal is received.
No snow noise.
Check the tuner supply voltage LB must be approx 5V. BT must be approx. 32V, and CH preset data check.
Does noise or signal appear at pin40 of IC801?
Does noise or signal appear at pin38 of IC801?
Check IC801and its related circuit.
Check the Tuner AGC at TP201.
Does noise or signal appear at pin23 and 24 of IC801?
Check Q401, Q402 and its related circuit.
Check pin38 of IC801.
Check pin27 of IC801, Tuner and related circuit.
Check pin1,2 of SF201, Tuner and related circuit.
Check pin37 of IC801and related circuit.
NO SOUND
Does signal appear at pin6 of IC302 / 303?
Check IC3001and its related circuit.
Does signal appear at pin2 of IC302 / 303?
Check Speaker.
Check IC302 / 303 and peripheral circuit.
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