Daewoo DVN-14F6N Service Manual page 33

1-2) PLAYBACK PHASE Adjustment
Mode Adjustment parts
Play
Location of Adjustment Parts
MAIN PCB
PY09
RN90
DECK A'S
• Adjustment Procedure
1. Preparation
1) Play back the Test tape (Color Bar).
2) Connect scope's connector to PY 09
3) Set the Oscilloscope to the chop mode.
Connect CH1 to the H/SW(PY09) and CH2 to the V-OUT(PY09) and trigger the scope with the signal from CH1.
2. Adjustment
1) Adjust RN90 to position the rising edge of SW PULSE at 6.5H from the V-SYNC.
Check point
RN90 RY05
PY05
Y/C
BOARD
Test equipments
Oscilloscope
Observation Waveform
Horizontal Axis : 100µS/DIV
Vertical Axis : CH1 : SW30, CH2:V.OUT
30
Test tape Input signal
DN-1