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There are currently no product reviews.
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The manual was exact the thing that was promised. My old car stereo is working again thanks to the information supplied.
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I PURHASED THIS PRODUCT BECAUSE I WAS HAVING PROBLEMS WITH MY CDR20 HARMAN KARDON RECORDER. WHICH I PURCHASED NEW 12 YEARS AGO. AFTER REVIEWING THE MANUAL, I WAS ABLE TO ADJUST THE TENSIONER IN THE SYSTEM. WORKS LIKE A CHAMP!.
SAVED ME AT LEAST 100.00 WHICH WAS WHAT A SERVICE REPAIR STATION WANTED. GREAT MANUAL EASY TO READ. SPECIALLY AFTER I PRINTED THE PAGES WHICH DEALT WITH MY RECORDER. THANKS A LOT!!!!!!!!
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You can fully trust on this one!
All the schematics are very crear an in one piece per page
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I have never bought a service manual which is as competely readable as this althogh it was a scanned pdf. Thank you for this succesful manual also cheaper than other sites.
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Thanks for a very good and readable servicemanual. Just what I needed as a "dinosaur technician". I really recommmend this site and will come back.
Åsbjörn
TROUBLESHOOTING
TROUBLESHOOTING
C-1. Bad playback quality (1) D. No broadcasting signal received
Noise appears on the playback screen. No broadcasting signal received
YES Is noise diminished by tracking adjustment. YES Noise band is trembled up and down? YES Is there CTL pulse at IC501 pin#97? YES Is there problem in CTL Input Check IC501. circuit and amplifier. YES Check C510,R545~R547 IC 501 pin #91, 92, 98. Is there Video output at P100 pin#1? YES Check Video Buffer Q670, Q671 NO Check P100 NO Is the height of CTL HEAD normal? No dust? NO Re-adjust the height of AC HEAD. Remove the dust. YES Is Video Signal input at IC501 pin#56? NO Check IC301. NO Noise appears on the screen even though changing tape. YES NO Re-adjust PATH. Is the output at IC501 pin# 61(CLK), 60 (DATA) normal? YES Is SIF,Video output at TMI(RF101) pin#16,19 normal? YES NO Check TMI (RF101) Block. NO Check IC 501.
Re-adjust PATH.
C-2. Bad playback quality (2)
Noise appears on the Full playback screen.
YES NO Are SW pulse and HA SW normal? Are there SW, HA SW pulse at IC501 pin #16, 18? YES Check PCB Pattern. NO ENVE Wave at P502 pin #4? YES Check VIDEO circuit. Check HEAD AMP connector and HEAD. NO Check IC501. Recheck step B-1 (Bad playback quallty (1)).
YES
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