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.
Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
Text excerpt from page 16 (click to view)
Disassembly and Reassembly
4-3-3 PCB Removal
1. Refer to the Fig. 4-4. 2. Remove the wire (1P) from the chassis mounting. 3. Pull the PCB guides backwards. 4. Lift both edges of the PCB and pull out.
Disassembly
1. Ensure that the PCB is well positioned in the PCB guides. 2. The power cord must not touch the heat-sink, D73. 3. The PCB guide is part of the chassis mounting ; if a new PCB guide is needed, the complete chassis mounting must be replaced.
4-3-4 SNAPIN Removal
a
SNAPIN-CONTROL b
Fig. 4-7 Press the SNAPIN (b) with thumb ; pull the left holder-bracket (a) with index finger
