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S/M No. : VK811PSEF0

Service Manual
Video Cassette Recorder

Model: DV-K221DY (VQ253)

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