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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!
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It was just what I need to fix my old BMW's CD player. Very convenient also. Thank you.
4. Confirmation of the RF level
Test point: RF and VC (Vref) Test disc: TCD-782 Confirm that the RF waveform appears as shown below.
At 0.8 Vp-p or greater
VOLT/DIV: 200mV TIME/DIV: 0.5us
5. Confirmation of tracking balance
Test point: TE and VC (Vref) Test disc: TCD-782 Press the DSL button while the test disc is playing and confirm that the traverse waveform is as is shown below.
VC
VOLT/DIV: 200mv TIME/DIV: 2ms
6. Confirmation of each servo
It is possible to confirm the adjustment value of each servo by repeatedly pressing the MODE button while the test disc is playing. The switchover sequence is as stated below. Confirmation mode OFF -> Focus bias (FB) -> Tracking balance (TB) -> Tracking gain (TG) -> Tracking error offset (TEO) -> Focus gain (FG) -> Focus error offset (FEO) -> Confirmation mode OFF Example: Tracking error offset (TEO) Adjustment value-> 03
Tracking error offset (TEO) display
Adjustment value
*Adjustment values are displayed in HEX.
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