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[ Servo circuit ]
1. Playback Switching
Point
Measuring instrument and condition
– – –
Test point
– – –
EXT trigger
– – –
Measurement
– – –
range
PCB-MAIN (Component side)
TP5A
TP5B
Adjustment purpose
Video switch over timing during playback.
Symptom when
Switching noise or jitter in the playback picture.
incorrectly adjusted
VCR set up condition
– – –
Input signal
Alignment Tape
Using tape
( NS1, stair step )
VCR
Playback
condition
– – –
Using Jig
1. Play back an Alignment Tape. (NS1, stair step)
2. Short-circuit TP5A to TP5B.
3. Push the SP / EP buttons.
(The adjustment will finish in about six seconds.)
4. The automatic adjustment will finish in about 6
seconds. A value between 55 and 75 will be
displayed on the fluorescent display.
5. Open-circuit TP5A to TP5B.
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