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Great scanned service manual
Usefull informations.
I will buy again!
Best Regards
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The manual describes this product very good. It has the basic things to know and also a more detailed look. Very well made!
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An excellent document to assist in the repair of my old personal tape player. It includes full circuit diagrams and physical layout drawings and full instructions on disassembly and fault finding.
Well worth the meagre price.
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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.
PDR-W739
6.5.4 Focus Bias Adjustment
Test Point Adjustment Point Adjustment Value Symptom when out of adjustment [Procedure]
(1) Press the SYNCHRO button in Stop mode. Note: Make sure the unit is in Stop mode. (2) Check that "OPT" disappears on the FL display. (3) Press the AUTO SPACE button so that "CDR 04ff34��" appears on the FL display. (4) Press the FINALIZE button for focus-in. (5) Press the PLAY/PAUSE 6 button for CAV-servo spindle kick. (6) Press the PLAY/PAUSE 6 button to close the tracking servo, then set the unit to Playback mode. (7) Adjust with the REC LEVEL knob until the above adjustment value to be reached is obtained. Press the REC LEVEL knob to register the adjustment. Once the adjustment is registered with the REC LEVEL knob, " ERASE " on the FL display will disappear. (8) Press the STOP button to stop the unit. CN102 - pin 1 (RF) SYNCHRO button, REC LEVEL knob Adjust until RF jitter is minimal or that the eye pattern of the RF waveform is most open. Sound broken, record characteristics deteriorate
RF 10 : 1 VC 10:1 probe Jitter Meter or Oscilloscope
Note: Adjustment must be done around mid-radius on a disc.
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