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There are currently no product reviews.
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The manual is well organized and is easy to read. The chapters are following normal way to proceed.
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This scanned manual is well done in that most all the pages except for one is straight and clear- the way I would do them. One page was upside down but that happens. For the money that is charged on this site you get a pretty good deal. Now with complex repairs, I still prefer to us paper manuals which I have to buy at stereomanuals but the one I got here was much less than the $45 he was charging but this is a larger than normal manual for three different units. I am a picky manual user because I have used original manuals from Sony and Teac.
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Very useful service manual, was exactly what i needed.Good quality,reasonable price.Thank you.
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Acurate informations inside the SM and I could repair my old Sansui SC-3330 without any problems. Thanks.
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I used it to repair a NAD 7030, but unfortunately, the 7045 is different !
But documentation was useful.
GRUNDIG Service
CIRFLEXX UMS 4201 SPCD
Adjustment Procedures
Tuner
Test equipment: Sweep / Signal Generator, Distortion Meter, Oscilloscope, Digital Voltmeter Note: The frontend is a completely preadjusted module. Only the IF filter must be adjusted to the IF amplifier (Adjustment 4). The values of the tuning voltages are as follows: 87.5MHz = typ. 1,6V; 108MHz = typ. 8.0V.
Adjustment 1. AM IF
Preparation AM; Sweep Generator 450kHz to AM Aerial Input; Ue > 60dBµV; Oscilloscope to Testpoint TP5, IC502(-19).
Adjustment Procedure Adjust with T503 for Maximum.
2. AM Oscillator
AM, 1620kHz; Digital Voltmeter to Testpoint TP3. AM; Couple Signal Generator via Loop Antennas; Ue > 50dBµV; fmod = 1kHz; Oscilloscope to Loudspeaker Output. FM, 98.0MHz Signal Generator to FM Aerial Input; Ue = 20dBµV; fmod = 1kHz; Deviation = 75kHz; Distortion Meter to Loudspeaker Outputs. FM; Signal Generator to FM Aerial Input; Ue = 50dBµV; fmod = 19kHz; Oscilloscope to Loudspeaker Outputs.
Adjust with T501 for 8.0V ± 0.2V.
3. AM Band Pass
Adjust alternating with L502 at 558kHz and with VC501 at 1440kHz for AF Maximum.
4. FM IF
Adjust with IF Filter A (under the cover) for Distortion Minimum.
5. 19kHz Filter
Adjust with LPF501 (left channel) and with LPF502 (right channel) for AF Minimum.
CD
Test equipment: Digital Voltmeter
Adjustment DC Offset
Preparation Mode CD; Digital Voltmeter between TP9 and TP10.
Adjustment Procedure Adjust with VR701 for 0V ± 0.1V.
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