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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
IC DESCRIPTION IC, µPD1793GK
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18,19 20 21 22 23 24 25 26 27 28 - 30 31 32 33 - 34 35 - 36 37 - 38 39 40 - 43 44 - 60 61 62 63 64 65 66 Pin Name VAD SEL VAD SEL2 AM IF FM IF VDD 1 PLL REG PLL OUT PLL OUT OSC L OSC H GND TEST RESET ST IN E U W REQ P OUT TU OUT AM OUT FM OUT TV OUT NSB OUT TV/FM OUT BEEP VDD 0 CAP 0 - 1 REG 0 - 1 CAP 2 - 3 REG 2 COM 0 - 3 LCD 0 - 16 BAT SEL TV SEL BASS SEL MUTE OUT SP CANCEL I/O I I I I O O I I I I I I I O O O O O O O O O O O I I I O O Description �H� : voltage detection at Vdd = 3.0V �L� : at Vdd 1.5V No using Input IF counter Input IF counter Input power supply Input PLL regulator Output PLL charge-pomp Output PLL charge-pomp Input OSC low Input OSC high GND No using �L� : system reset �H� : stereo indicator turn on Version select. �L� : JAPAN, �H� : EUROPE, �L� USA, � H� : USA WIDE Version select. �L� : JAPAN, �L� : EUROPE, �H� USA, � H� : USA WIDE At USA WIDE �L� : TV & WEATHER, �H� : TV/WEATHER No using �H� : IF output Output high voltage at TUNER & TIMER & ALARM operating Output high voltage at TUNER operating Output low voltage at TUNER operating AM band Output low voltage at TUNER operating FM band Output low voltage at TUNER operating TV band Output low voltage at TUNER operating NSB band Output low voltage at TUNER operating FM/TV band No using Out BEEP sound Input power supply Connect capacitor for LCD LCD regulator Connect capacitor for LCD LCD regulator LCD common LCD segment Selection of voltage detection Selection of TV �H� : using 76 �L� : using 78
�H� : without TV
�L� : within TV
Selection of S-BSS operation �H� : using 73 �L� : using 78 No using Output high voltage at muting Output high voltage at speaker cancelling (may be no using)
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