Sanyo VCC-6594P Service Manual page 6

g
R
YL
R
75%
100%
YL
yl
G
3-10. Iris Level Adjustment
Adjustment location: S3001, VR301 (CA-3)
Measuring location: VIDEO OUT
Measuring equipment: Oscilloscope
Subject: Gray scale chart
Adjusting method:
1. Set S3001 to the DC type lens side.
2. Attach the DC type automatic iris lens. (Use a VCL-CS8LY
or equivalent as the lens).
3. Display the gray scale chart on full screen.
4. Turn the VR301 to the right so that the white level is maxi-
mum.
5. Turn the VR301 to the left so that the output level is 750 ±
10 mVp-p.
VIDEO OUTPUT
cy
MG
v
W
b
U
B
Cy
mg
750 ± 10 mVp-p
3-11. Line Phase Adjustment
Adjustment location: S3002-9 (CA-3), VR402 (CA-4)
Measuring location: VIDEO OUT, 24 V AC/GND terminals
Measuring equipment: Oscilloscope
Subject: Attach the lens cap
Adjusting method:
1. Connect the camera to a 24 V AC /50 Hz power source.
2. Set S3002-9 switch to the "L-L" (ON) position.
3. The HOT (signal) side and the COLD (GND) side of the
oscilloscope probe connect to the right side and the left side
of the 24 VAC terminals respectively. (rear view)
4. Turn VR402 (LINE PHASE) to adjust the leading edge of
the vertical sync signal and zero-cross shift of the AC 24 V
power supply to 0 ± 0.2 msec.
5. Set S3002-9 to the "INT" (OFF) position before shipment.
24 V AC
TP123
VIDEO OUT
3-12. CCD White Point Defect Detect Adjustment
Measuring location: VIDEO OUT
Measuring equipment: Monitor display
Adjustment method:
1. Shield light with a lens cap to provide dark condition.
2. Set the camera mode, and click the "AUTO" at the WDD on
the adjustment software.
3. After completing this adjustment, it comfirms that white point
can not be seen on the monitor display.
4. Click the End button.
– 6 –
zero cross
point
0 0.2 msec.