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Good-quality scans. Detailed description. I hope I can repair the machine.
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High-quality scanning. Detailed description. Recommend for all technician. A+++
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This is a good quality scan of the original Service Manual from Nordmende, Germany. Contains the circuit diagram, PCB layout, adjust/tune instructions as well. It is NOT in English but in GERMAN language! That was quite right for my german friend from the lower east side in Berlin.
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Received via e-mail this PDF manual is worth the money. This is a quality scan of a manual in excellent condition and is just as good as having the original manual in hand. I have later seen the original manual and it was printed in colour, but this particular manual is black & white but scan resolution is high end quality! All drawings and pictures are presented in great detail. So, nearly perfect score in my opinion.
If you own the turntable you also should own the manual!
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I was very satisfied with the service manual I ordered and downloaded. I will definitely buy again from this seller.
2-4-6. Playback Level Check (MA-286 Board) Mode Playback Signal Alignment Measurement point Measuring instrument Specified value Alignment tape : SP mode color bar portion Video LINE OUT terminal Oscilloscope A=1.00 ± 0.02Vp-p
2-5-1. ACE Head Adjustment Refer to the �VHS mechanical adjustment manual 11). 2-5-2. E-E Output Level Check Mode Signal Measurement point Measuring instrument Specified value
� (9-973-623-
E-E 400Hz, �7.5dBs : IC540 pin 5 (2) CJ540 L/R Audio level meter �7.5 ± 2dBs ( ) : R-ch
[Check Method] 1) Check that the playback level satisfies the specified value.
A
[Check Method] 1) Input signal of 400Hz and �7.5dBs to the CN540 pin 5 (2). 2) Check that the audio output level is �7.5 ± 3dBs. 2-5-3. Overall Output Level and Distortion Factor Check Mode Self-record playback Signal Measurement point Measuring instrument Specified value 400Hz, �7.5dBs : IC540 pin 5 (2) IC540 pin 3 (1) Audio level meter and Distortion meter Playback Level: �6.3 ± 3dBs Distortion: 4.0% or less ( ) : R-ch
H
Fig. 7-2-9. 2-4-7. VCO Frequency Adjustment (MA-286 Board) Mode Signal Measurement point Measuring instrument Adjustment element Specified value Playback Alignment tape : SP mode color bar portion IC500 pin @§ Digital voltmeter CT500 A=2.4 ± 2.5Vdc
[Check Method] 1) Adjust CT500 until DC output level at IC 500 pin @§ (F. C) satifies the specification.
A 0V 1H
[Check Method] 1) Input signal of 400Hz and �7.5dBs to the audio input. 2) Record signal. 3) Playback the recorded portion. 4) Check that the output level is �6.3 ± 3dBs. 5) Check that the distortion factor is 4.0% or less. 2-5-4. Overall Noise Level Check Mode Signal Measurement point Measuring instrument Specified value Self-record playback No signal (Insert a shorting plug into the Audio LINE IN terminal) IC540 pin 3 (1) Audio level meter (IHF-A weighing filter is used) � 45.5dBs or less ( ) : R-ch
Fig. 7-2-10 2-5. AUDIO SYSTEM ADJUSTMENT � For the adjustment of the audio system, perform in the SP mode if there is no special notes. Use the alignment tape. [Connecting Instruments]
(CN540) Audio line OUTPUT L/R (CN540) Audio line INPUT L/R Audio oscillator 600� Attenuator VTR 47k� Audio level meter or distortion meter
[Check Method] 1) Record. 2) Playback recorded portion. 3) Check that noise level is � 45.5dBs or less.
Fig. 7-2-10. � Adjust in the SP mode if there is no special indications. � Perform the adjustment setting the switch on the following positions. � CHANNEL switch .................................................. LINE 1 [Adjustment Method] 1. ACE head adjustment.....Refer to the VHS mechanical adjustment manual . 2. E-E output level check 3. Overall Output level and distortion factor check 4. Overall noise level check.
7-5
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