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/
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!
It was just what I need to fix my old BMW's CD player. Very convenient also. Thank you.
Text excerpt from page 11 (click to view)
4. Amount of change of jitter
The amount of change of jitter is displayed in the focus bias check mode. The displayed value has 256 steps from 00 to FF. Example: focus bias (FB) Adjustment value�00 Jitter value�FD
RNDM
RESUME 1 DSL
Tracking offset
Adjustment value
* Adjustment values and jitter values are indicated in hexadecimal.