Adjustment; Adjustments To Be Done; Adjustments - Casio VM-1000 Service Manual & Parts List

2. ADJUSTMENTS

2-1. Adjustments to be done

Adjustments
1. VCC2 voltage adjustment
2. Contrast adjustment
3. Tint, Color adjustments
4. VCC4-1 adjustment
5. VCC9 adjustment
6. VCO Free Run adjustment
7. V-COM coarse adjustment
8. V-COM fine adjustment
9. Brightness adjustment
10. Monostable multivibrator adjustment
2-2. Adjustments
1. VCC2 adjustment
Power supply
1) Adjust the output voltage of power supply so that CP120 voltage becomes 11.5 ± 0.05V.
2) Adjust VR102 so that CP102 voltage becomes 5.0 ± 0.02V.
2. Contrast adjustment
SGVideo Signal
1) Ground CP313
2) Apply 75% color bar signal to video input of the set.
3) Observe CP310 signal with an oscilloscope. Adjust VR310 so that
the amplitude between pedestal and white level is 0.6 ± 0.1Vp-p.
Necessary equipment
Power supply, Digital multimeter (FD730C)
Power supply, Pattern generator, Signal generator, Oscilloscope
Power supply, Pattern generator, Signal generator, Oscilloscope
Power supply, Oscilloscope
Power supply, Oscilloscope
Power supply, Video PG, Frequency counter
Power supply, Oscilloscope
Power supply, Video PG, V-COM jig, Oscilloscope
Power supply, Video PG, Oscilloscope
Power supply, Pattern generator, Oscilloscope
Set
Input Output
CP120
CP102
Set
CP313
Video
Output
Input
CP310
— 2 —
Digital multimeter
GND
Oscilloscope
0.6 ± 0.1Vp-p
Adjusting block
Video unit
Video unit
Video unit
M-PCB
M-PCB
M-PCB
M-PCB
M-PCB
M-PCB
M-PCB