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This service manual helped me to repair my PIONEER. Iam very satisfied, that I found it here.
Even the price of manual was not so high that person would not be able to spend a few money.
But that is very worth spent money. Thanks
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Excellent quality service manual. Quick processing, fair prices. Love to do business again. Thank you!!!
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Excellent service manual, the only known point of note is the alignment of improvability scanned pages within the pdf page. The resolution is good.
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I was very glad recieving the service manal from You. Additionaly very fast. Extremaly nice servicing. Thanks very mach! Now my GX-220 working better, than it was made. Alexander from Moscow, Russia/
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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!
TROUBLESHOOTING
C-1. Bad playback quality (1)
Noise appears on the playback screen.
Is noise diminished by tracking adjustment. YES Noise band is trembled up and down? YES Is there CTL pulse at IC601 pin#97? YES
NO Re-adjust PATH.
NO
Noise appears on the screen even though changing tape.
YES Re-adjust PATH.
NO
Is the height of CTL HEAD normal? No dust?
NO
Re-adjust the height of AC HEAD. Remove the dust.
Check IC601.
Is there problem in CTL Input circuit and amplifier.
YES
Check C651, C652, R651~R653 IC601 pin #91, 92, 98.
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