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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!
4-A A
! Note: Open the CD door and check the radiation
power with an optical power meter or by watching the radiaation through the lens of the pickup unit at a minimum distance of 30cmfrpm the pickup.
Is 92 pin (C16M) (16.93 MHz) of IC502 normal ?
!
No
* Check CN504 and CN604. * Check cn603. * C heck IC701 and X701.
Yes
!
Does the LASER emit ? No
A1
Yes
!
Dose the lens move up and down ? No
A2
Yes Load a disc and close CD tray (PLAY). Then check the following.
5V
Is the waveform at pin 16 (SEL) of IC501 like that shown in Fig. 10 ?
No * Check circuit around IC501 and IC502.
Figure 10
Yes
1V
Is the waveform at pin 9 of IC501 (RFO) like that shown in Fig. 11 ? Yes
No
* Check wire connector from pickup CN505 and CN506. * Check IC501. * Check pickup.
Figure 11
>0.4V
Is the waveform at pin 60 (FEI) of IC502 like that shown in Fig. 12 ?
No
* Check circuit around pins 14 and 15 of IC501. * Check VR502.
Yes
Figure 12
* Check circuit around IC501.
14
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