Omnivision PVQ-130W Service Manual page 111

(Confirmation of white)
1. Supply a White Pattern Signal to the Video Input Jack.
2. Confirm that the purity is still correct.
3. If the purity is not acceptable, readjust the purity.
7.3.12. V. HEIGHT/H. POSITION ADJUSTMENT
Purpose :
To set the standard vertical and horizontal picture size.
Symptom of Misadjustment :
The picture size is on the vertical and horizontal axis is abnormal.
Test Point:
----------
Adjustment:
V SIZE (EVR),
H CENTER (EVR)
V POSITION (EVR)
Specification:
Refer to descriptions below.
Input:
Video Input Jack, Monoscope Pattern Signal
Mode:
STOP
Equipment:
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