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Electrical adjustment, Servo/syscon circuit adjustment method – Daewoo DV-K580NZ-T User Manual

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ELECTRICAL ADJUSTMENT

1. SERVO/SYSCON CIRCUIT ADJUSTMENT METHOD


v

VIDEO HEAD SWITCHING POSITION

v

CONNECTION METHOD

v

ADJUSTMENT PROCEDURE

1) Play back the test tape.
2) Set the oscilloscope in the chop mode connect the CH1 to SW pulse(PT501 (r)PIN), the CH2 to TJ396(video out) with

CH1 triggering.

3) Adjust R595 for the positive trigger until 6.5

±

0.5H cycle before the vertical SYNC pulse.

Adjustment Part

Checking Point

Measuring Equipment

Mode

Test Tape

R595

TJ396

PT501 PIN3

OSCILLOSCOPE

Play

DN-1 (Color Bar)

TJ396

CH-1
Oscilloscope
CH-2

PT501

R595

CH1

SW PULSE

(PT501 3PIN)

VIDEO OUT

(TJ396)

Vertical SYNC Signal

1H

6.5H 0.5H

Trigger Position