Composite Yc Timing Adjustment; Composite C Gain Adjustment; System Sub-Carrier Phase Adjustment - Panasonic DVCPRO AJ-D455P Service Manual

4-7. Composite YC Timing
Adjustment
BOARD
V OUT (F2)
TP VIDEO OUT 1 (CH B)
ADJ. VR456 (ENC C DL)
TAPE 525(NTSC): VFM3580KM (L)
Alignment Tape (Color Bar)
INPUT -----
MODE PLAY
M. EQ
Analog WFM with SCH meter
SCH = 0 ± 1°
SPEC.
1. Adjust VR456 so that the SCH of VIDEO OUT 1
signal is in the specification.
VIDEO OUT 1

4-8. Composite C Gain Adjustment

BOARD
V OUT (F2)
TP VIDEO OUT 1
ADJ. VR455 (ENC C LEV)
TAPE
525(NTSC): VFM3580KM (L)
Alignment Tape (Color Bar)
INPUT -----
MODE PLAY
M. EQ
Vector Scope
SPEC. All vector dots are in the inner box.
1. Set the burst position on the vector scope at
correct position.
2. Adjust VR455 so that the all vector dots are in the
inner box as shown in figure.
VIDEO OUT 1
4-9. System Sub-Carrier Phase
Adjustment
BOARD
V OUT (F2)
TP REF IN (CH A), VIDEO OUT 1 (CH B)
ADJ. VR600 (SYS SC)
TAPE 525(NTSC): VFM3580KM (L)
Alignment Tape (Color Bar)
INPUT -----
MODE PLAY
M. EQ
Analog WFM with SCH meter
SCH = 0 ± 1°
SPEC.
1. Adjust VR600 so that the SCH of the VIDEO OUT
1 (CHB) is same as EXT-REF-IN (CHA).
<Note>
1. Confirm that the SCH indicator should be turned
on when reference signal is inputted.
2. Set the WFM to SCH mode, and set the EXT
reference mode.
Observe the Reference signal (CHA) and adjust
the PHASE VR of the WFM so that the SCH is
correct portion before adjusting the VR600 as
shown in figure.
CH B
(VIDEO OUT 1)
ELE-14