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- SERVICE NOTE
- GENERAL
- DISASSEMBLY
- TEST MODE
- MECHANICAL ADJUSTMENTS
- ELECTRICAL ADJUSTMENTS
- DIAGRAMS
- Circuit Board Location
- Block Diagrams
- Printed Wiring Board BD Section
- Schematic Diagram BD Section
- Printed Wiring Board Main Section
- Schematic Diagram Main Section (1/3)
- Schematic Diagram Main Section (2/3)
- Schematic Diagram Main Section (3/3)
- Printed Wiring Board AMP Section
- Schematic Diagram AMP Section
- Printed Wiring Board Panel Section
- Schematic Diagram Panel Section
- Printed Wiring Board Leaf SW Section
- Schematic Diagram Leaf SW Section
- Printed Wiring Board Driver Section
- Schematic Diagram Driver Section
- Printed Wiring Board Trans Section
- Schematic Diagram Trans Section
- IC Pin Function Description
- IC Block Diagrams
- EXPLODED VIEWS
- Main Section
- Panel Section
- Main Board Section
- Tape Mechanism Section
- CD Mechanism Section
- ELECTRICAL PARTS LIST
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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
[MC Test Mode] � This mode is used to check operations of the respective sections of Amplifier, Tuner, CD and Tape. Procedure: 1. Press the ?/1 button to turn on the set. 2. Press the three buttons of x , ENTER and DISC 3 simultaneously. 3. A message �TEST MODE� appears on the FL display tube. 4 When f (CURSOR UP) button is pressed, GEQ increases to its maximum and a message �GEQ ALL MA� appears. 5. When F (CURSOR DOWN) button is pressed, GEQ decreases to its minimum and a message �GEQ ALL M1� appears. 6. When g (CURSOR LEFT) or G (CURSOR RIGHT) button is pressed, GEQ is set to flat and a message �GEQ FLAT� appears. 7. When the VOLUME control knob is turned clockwise even slightly, the sound volume increases to its maximum and a message �VOLUME MAX� appears for two seconds, then the display returns to the original display. 8. When the VOLUME control knob is turned counter-clockwise even slightly, the sound volume decreases to its minimum and a message �VOLUME MIN� appears for two seconds, then the display returns to the original display. 9. In the test mode, the default-preset channel is called even when the TUNER is selected and an attempt is made to call the preset channel that has been stored in memory, by operating the Shuttle knob. (It means that the memory is cleared.) 10. When CD is selected and the EDIT button is pressed, the disc that is being chucked at this moment becomes the default setting. It means that the default disc only is accessed when any other discs are selected even though the display indication changes accordingly. At the same time, the DISK SKIP EXCHANGE and OPEN/CLOSE cannot be accepted. (It means that the tray motor and the turntable motor are disabled of their operation.) 11. When a tape is inserted in Deck B and recording is started, the input source function selects VIDEO automatically. 12. When x button is pressed to stop recording, the Tape (Deck) B is selected and tape is rewound using the Shuttle knob, tape is rewound, tape is stops at around the record-starting position and playback of the recorded portion of the tape is started. If PAUSE is inserted even once during recording, tape is rewound to the position around the PAUSE position and is played back. 13. When the CD SYNC HI-DUB Button is press during playback of Deck B, either normal speed or high speed can be selected by this button. 14. Select the desired loop by pressing the PLAY MODE button. Insert a test tape AMS-110A or AMS-RO to Deck A. 15. Press the SPECTRUM button to enter the AMS test mode. 16. After a tape is rewound first, the FF AMS is checked, and the mechanism is shut off after detecting the AMS signal twice. 17. Then the REW AMS is checked and the mechanism is shut off after detecting the AMS signal twice. 18. When the check is complete, a message of either OK or NG appears. 19. When you want to exit this mode, press the ?/1 button twice. The cold reset is enforced at the same time.
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