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Very good conversation, Pretty fast Service, wood do it again,
Have paid by Paypal, so i got the Service Manual online after 15 Min.
Very helpfully.
Greeting from Germany,
Hans
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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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6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT
A
Note : The grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mechanism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU unit for the CD mechanism module. Changing the PU unit is thus best considered as a last resort. However, if the PU unit must be changed, the grating should be checked using the procedure below. Purpose : To check that the grating is within an acceptable range when the PU unit is changed.
B
Symptoms of Mal-adjustment : If the grating is off by a large amount symptoms such as being unable to close tracking, being unable to perform track search operations, or taking a long time for track searching. Method : Measuring Equipment Measuring Points Disc Mode
Oscilloscope, Two L.P.F. E, F, REFO1 TCD-782 TEST MODE
CD CORE UNIT(S10.5COMP2)
C
REFO1 E F E VREF L.P.F. 100 kΩ 390 pF Xch Ych
Oscilloscope
F VREF
D
100 kΩ 390 pF L.P.F.
E
Checking Procedure 1. In test mode, load the disc and switch the 3 V regulator on. 2. Using the [�] and [�] buttons, move the PU unit to the innermost track. 3. Press key [3] to close focus, the display should read "91". Press key [2] to implement the tracking balance adjustment the display should now read "81". Press key [3]. The display will change, returning to "81" on the fourth press. 4. As shown in the diagram above, monitor the LPF outputs using the oscilloscope and check that the phase difference is within 75°. Refer to the photographs supplied to determine the phase angle. 5. If the phase difference is determined to be greater than 75° try changing the PU unit to see if there is any improvement. If, after trying this a number of times, the grating angle does not become less than 75 then the mechanism should be judged to be at fault. Note Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the average angle. Hint Reloading the disc changes the clamp position and may decrease the "wobble".
F
52
DEH-P690UB/XN/UC
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