Sanyo VCC-4592P, Service Manual

Page: 7 / 31

– 6 –
24 V AC
TP123
zero cross
point
0 0.2 msec.
3-11. Line Phase Adjustment (for VCC-4594P)
Adjustment location: S3002-9 (CA-3), VR271 (CA-4)
Measuring location: VIDEO OUT, 24 V AC/GND terminals
Measuring equipment: Oscilloscope
Adjusting method:
1. Connect the camera to a 24 V AC /50 Hz power source.
2. Set S3002-9 switch to the “LL” (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 VR271 (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.
750
±
10 mVp-p
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 OUT
VIDEO OUTPUT
3-12. External Sync Phase Adjustment
(for VCC-4592P)
Adjustment location: VR201 (CA-2), S3002, VR304 (CA-3)
Measuring location: VIDEO OUT, VBS IN
Measuring equipment: Oscilloscope
Adjusting method:
1. Input a video signal to the VBS IN terminal, and then use
this signal to trigger an oscilloscope.
2. Turn VR304 to adjust so that the phase difference between
the leading edge of the horizontal synchronization signals
of the VBS IN and VIDEO OUT waveforms is 0
±
0.2
µ
sec.
3-13. 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.
0 ± 0.2 µsec
VBS IN
VIDEO
OUT