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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!
3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn�t appear on the screen in PB Mode,
Is 5V applied to the IC301 Pins23, 44, 45, 52, 68, 77? YES Is the Y/C Bus siganl applied to the IC301 Pins53, 54, 55? YES Does the normal RF signal NO appear at the IC301 Pin 14? Is the V.H.S/W signal NO applied to the IC301 Pin57? YES Does the Rectangular waveform(5V) appear at the IC301 Pin57(V.H.S/W) YES NO Check the V.H.S/W level. Check the System Circuit. (IC501 Pin18) NO Refer to �SYSTEM Y/C BUS CHECK Trouble Shooting�. NO Check the line of the REG 5V Line. (Power Circuit)
YES
Clean the Drum.
Does the Y(Luminance) signal appear at the IC301 Pin20? YES
NO
Check the R328, C322, C323.
Is the Y(Luminance) Video NO waveform showed up at the IC301 Pin22? YES Replace the IC301.
Check the C324.
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