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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.
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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.
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Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
4 Troubleshooting
4-6 No Sound
Does the DC 5 V appear at Pin 4 of IC803, Pin 5 of CN806? Yes Does the sound input signal appear at Pins 6 and 11 of IC803? Yes Do the sound signals appear at Pins 3 and 14 of IC803? Yes Does the DC 2.5 V bias appear at Pin 16 of IC503? Yes Check CN814, CN815 outputs.
No
Check IC803, IC804, VR841 and related circuit.
No
Check Pins 1 and 2 of CN806 and related circuits.
No
Check IC803 and related circuits.
No
Check C815, CN813, R821, R822, ZD803 on the Audio PCB.
SyncMaster 570BTFT/580BTFT
4-5
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