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Excellent service manual, the only known point of note is the alignment of improvability scanned pages within the pdf page. The resolution is good.
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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.
4-4. SCHEMATIC DIAGRAM (MAIN SECTION)
r
Refer to page 23 for IC Block Diagrams.
SRF-DR2000
Note: � All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. � All resistors are in � and 1/4 W or less unless otherwise � � � � � specified. ¢ : internal component. U : B+ Line. H : adjustment for repair. Power voltage is dc 3 V and fed with regulated dc power supply from external power voltage jack. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM Voltages are taken with a VOM (Input impedance 10 M�). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms.
� Signal path. F : FM J : Multiplex
r WAVEFORM
(MAIN SECTION)
r WAVEFORMS
(MICOM SECTION)
1
1.7Vp-p
1
Power failure at
2
1.8Vp-p
3
2.5Vp-p
2.4Vp-p
4.9152MHz
75kHz
VOLT/DIV : 0.5 V AC TIME/DIV : 5 µsec VOLT/DIV : 0.5V AC TIME/DIV : 0.1 µsec
4.9152MHz
VOLT/DIV : 0.5V AC TIME/DIV : 0.1µsec
8.192MHz
VOLT/DIV : 0.5V AC TIME/DIV : 0.1µsec
IC501 !�
IC301 !¢
IC101 #�
IC204 #º
�
�
�
� 17 �
� 18 �
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