ADJUSTMENT OF SYSTEM CONTROUSERVO CIRCUIT
l
Test points layout
Figure
SYSTEM CONTROUSERVO
Adjustment of PAL System playback switching
point
Measuring
instrument
Mode
Tape used
Test point
Control
ADJUSTMENT OF SERVO CIRCUIT
Specification
Oscilloscope
Playback
(tracking at center)
Alignment
CH-1; TP502
CH-2; Pin
of
(video
output). (CH-1 trigger slope
switch at internal trigger at
CH-1 side)
R751
SW. P. ADJ.)
6.5
1.
the PAL system alignment tape (VROCPSV)
and put the unit in the playback mode.
2. Press both tracking control button at the same
time to set the tracking in center.
3. Adjust
SW. P. ADJ.) so that the
waveform on the oscilloscope screen be as
shown in Figure 2-2.
(Video output)
CH-2;
50
Figure 2-2.
Adjustment of NTSC System
switching
point
Measuring
instrument
Mode
Oscilloscope
Playback
(tracking at center)
Tape used
Test point
Alignment
CH-1 TP502
CH-2; Pin
of
(video
output). (CH-1 trigger slope
switch at
Internal trigger at
CH-1 side)
Control
R753
SW. ADJ.)
Specification
6.5
1 . I n s e r t t h e N T S C s y s t e m a l i g n m e n t t a p e
(VROATSV) and put the unit in the playback
mode.
2. Press both tracking control button at the same
time to set the tracking in center.
3. Adjust R753
SW. P. ADJ.) so that the
waveform on the oscilloscope screen be as
shown in Figure 2-3.
CH-2
(Video output)
CH-1
50
Figure 2-3.
35
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