Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo Video VQ857 daewoo_dv-k821dy_vq857

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daewoo_dv-k821dy_vq857


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                         S/M No. : VK811PSEF0



Service Manual
Video Cassette Recorder

Model: DV-K821DY (VQ857)




                                          A




                                     F2GHA0




DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr            Jan. 2000
 ELECTRICAL ADJUSTMENT
1. PLAYBACK PHASE


                               ADJUSTMENT                                      TEST          TEST        INPUT
      ITEM         MODE                              CHECK POINT
                                  POINT                                      EQUIPMENT       TAPE       SIGNAL
     6.5H                                            PIN 4 & PIN 5
                    PLAY       [REC] BUTTON                                 OSCILLOSCOPE     DP-2     NO SIGNAL
 ADJUSTMENT                                            OF P504




                        ADJUSTMENT PARTS                                             MEASURING POINT
 PCB : MAIN - TOP VIEW
               TMI                                                            OSCILLOSCOPE
               BLOC
                                PRE-
                                AMP                                           CH1     CH2

                                                                                                    PATH JIG
                 P50




                                     TO PATH JIG




ADJUSTMENT PROCEDURE

1. Play back the test tape. (DP-2)

2. Set the oscilloscope to the CHOP mode. Connect CH1 to the SW PULSE (PIN 4 of P504)

3. Connect CH2 to the ENVE signal (PIN5 of P504)

4. Insert PATH JIG and press "REC" button on the remote control.

5. Check the position of the V-sync from the rising edge of the SW pulse.
  (Standard : 6.5H 



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