Casio KX-724B, Service Manual & Parts List

Page: 19 / 40

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Vcom Adjustment
1) While pressing the MODE and the shutter button, slide to the right to turn on power.
2) Press the self-timer and the DEL button at a time.
3) Press [+] or [–] to select the BLACK.
4) Press the shutter button.
5) Place a photo diode on the middle of the display.
ON
OFF
H
M
L
Set
Photo
diode
Oscilloscope
60Hz
Band-pass
filter
Photo sensor amp.
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
VR302 Adjust for ripple at minimum.
Photo sensor
amp.
Band pass filter
Oscilloscope
Free-running Frequency Adjustment
Pattern
generator
QV-10
Set
Output
CP302
Input
CP101
Frequency
Counter
Pattern
generator
CP101 VR400 CP302
Color bar
45.75 MHz
Adjust for a reading of
15.734
±
0.1 KHz.
Frequency
Counter
QV-30
QV-30