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Finally, i found one website, where i can download this service manual , and fix my hifi. The service manual is very good, and easy to download and to print.
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Complete and very useful. Could have benefited from a little higher resolution on the schematic and layout diagrams for improved legibility.
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Great Service Manual, Very Complete, as advertised, Perfect, Thanks!
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Good quality service manual.It has helped me to fix my FV1800,particularly for replacing the dial cord.The scheme is on A3 format and very readable.Thank.Olivier.
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This manual is complete and very readable.It was a great help for my two ICF5800L.The first one had the dial cord broken,and without the service manual it is impossible to replace it.Thank.Olivier.
PDR-609
6.7.13 Focus Bias Adjustment
Test Point Adjustment Value Purpose Symptom when Out of Adjustment CN102-pin 2 (RF) Minimize jitter value Optimizing DC offset voltage of focus servo loop circuit including pickup. Focus-in does not function, sound pauses, bad RF wave shape, or incapable to playback some discs. Adjustment method [Procedure]
1. Move the Pickup to center of the disc by pressing the SCAN key. ( 1 ¡ ) 2. Monitor the jitter value and set a CD disc. (use the jitter meter) 3. Press the FINALIZE key to FOCUS IN. 4. Press the PLAY/PAUSE key to turn the SPINDLE. (CAV) 5. Press the PLAY/PAUSE key to TRACKING ON. (EFM CLV) 6. Adjust the JOG key so that jitter value becomes minimum. 7. Press the ENTER key to register the adjustment. \ Shift to the RFDC Level Adjustment automatically. 8. Adjustment is completed automatically. \ Each display the reason that became abnormal when adjustment was not completed normally. When did not converge in limit of adjustment possibility (when it became the lowest level) When failed in writing to the EEPROM 9. Press the STOP key to stop the operation.
FL Indication
Caution:
In this adjustment, shift to the RFDC Adjustment when pressing the ENTER key before step 7, and there is it when completed in normal on the indication. However, must not omit operation of steps 5 from 3 because RFDC is not adjusted to normal when pressing the ENTER key with the state that steps 5 from 3 are not executed.
CN102
RF 2 10: 1 prove VC 6 Oscilloscope
How to execute the automatic adjustment once again after the automatic adjustment is completed: 1. Press the STOP key to stop the disc rotation. (servo OFF) 2. Press the AUTO/MANUAL key and shift to the Focus Offset adjustment. 3. Press the RECORD key to start the automatic adjustment. Adjust from "6.7.11 automatic Adjustment Start" to "6.7.13 Focus Bias Adjustment". Press the STOP key when stops execution of the automatic adjustment on the way and stop processing. Then return to the state of "6.6.10 Preparations" and stop the operation.
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