Panasonic AJ-YA120AG, Service Manual

Page: 456 / 647

ELE-23
7-9. PAL CF Phase (1) Adj.
BOARD SGEN SDI / UDC
TP
TP200, SD REF IN Through
ADJ.
VR301 [PAL_CF]
TAPE ---
INPUT
SD REF IN = Black Burst (W/CF Flag)
INT SG
MODE EE
M. EQ
Oscilloscope
SPEC.
Rising Edge of TP200 = 3
rd
Field of SD REF
<VTR Menu Setting>
SYSTEM FREQUENCY: 50
OUTREF: SDREF
1. Supply the same signal to the SD REF IN (thru
out) to the oscilloscope.
2. Set VR301 at fully CCW position.
3. Slowly rotate VR301 CW and stop it when the 3
rd
field of on the SD REF meets the rising edge of
TP200.
7-10. PAL CF Phase (2) Adj.
BOARD SGEN SDI / UDC
TP
TP1, TP2, TP200, SD REF IN Through
ADJ.
VR301 [PAL_CF]
TAPE ---
INPUT
SD REF IN = Black Burst (W/CF Flag)
INT SG
MODE EE
M. EQ
Oscilloscope
SPEC.
· A = B ± 2msec.
· Rising Edge of TP200 =: 3
rd
Field of SD
REF SD REF
<VTR Menu Setting>
SYSTEM FREQUENCY: 50
OUTREF: SDREF
1. Adjust VR301 so that the rising edge of TP2 is at
the center of TP1.
2. Repeat “7-9. PAL CF Phase (1) Adj. and 7-10.
PAL CF Phase (2) Adj.”
TP200
SDREF
Field 1 2 3 4 5 6 7 8 1
A B
TP1
TP2
TP200
SDREF
Field 1 2 3 4 5 6 7 8 1
Rising
Edge