Casio EV-500B Service Manual & Parts List page 10

* Place a photo diode on the middle of the display plate.
EV-500
set
Photo
diode
AV-C1
Audio/Video jack
Input Input
Connection Point
Vcom Adjustment
Photo sensor amp.
ON H
M
OFF L
Input Output
Adjust
Signal Connection
Photo sensor
amp.
VR303
Bandpass filter
Oscilloscope
Free-Running Frequency Adjustment
EV-500
set
Output
TP6
Frequency
VR740
counter
— 9 —
Oscilloscope
Bandpass
filter
Output
Result
Point
Adjust to obtain the minimum
ripple.
Frequency
counter
Adjust to obtain a reading of
TP6
15.73 ± 0.1 kHz.