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!
Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
Text excerpt from page 21 (click to view)
PIN
36
NAME
O ption B IN (P 01) O ption C IN (P 02) O ption D IN P 03 P 04 P 05 P 06 P ow er C ontrol O utpu t (P 07)
FUNCTION
- HIGH : AV PIP FUNCTIO N - LOW : 2-TUNER PIP FUNCTIO N - HIGH : AV VIDEO MO DE - LOW : NO VIDEO MODE - HIGH : M ONO - LOW : STEREO/SAP FUNCTIO N - N.C - N.C - N.C - Active High - Low state at initial condition(RESET) - Toggle Low/High when Power key input is detected.
REMARK
CM OS Push Pull CM OS Push Pull
37
38
39 40 41 42
CM OS Push-Pull
Power OFF High Power ON
- Automatically turns to - Automatically turns to indicates OFF-TIM E. - Automatically turns to indicates ON-TIME. - Automatically turns to Low when Sleep Timer (count down) counts "0" Low when the OFF TIM ER is set and the clock(TV) High when the ON TIM ER is set and the clock(TV) Low when Auto Power OFF.
