Samsung VP-D70 Service Manual page 27

Adjustment and Adjustment
3. How to adjust Head Switching (HDSWP)
1) Connect No. 2 pin of WAFER CNR02 (HEAD-SW signal) for adjustment to CH1 of oscilloscope.
2) Connect No. 3 pin of WAFER CNR02 (ENVE-OUT signal) for adjustment to CH2 of oscilloscope.
3) Play standard tape.
4) Select HDSW of the video adjustment mode.
5) Adjust so that the time between HEAD-SW START and G1 START OF ENVE-OUT is 141µs (±10µs).
4. Center Value Adjustment of Zoom Switch
NO MODE
1 ZOOMVR
S64 LOO
1) Select ZOOMVR in the video adjustment mode.
2) Adjust ZOOM SW so that the switch is put in the middle of T and W.
3) Adjust ZOOMVR so that the current value of ZOOM SW is equal to the adjusted ZOOMVR value.
3-4
G1
SP PLAY
0:00:00:00
EVR EPR
80H 80H
(Preset value of the Zoom SW)
(Adjusted value of the
Zoom SW)
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