Casio EV-500C Service Manual & Parts List page 8

* Desolder the IF pad to open.
Pattern
generator
Input Input
Connection Point
Color bar
Pattern
38.9 MHz
generator
(EV-200C,I,N)
TP2
39.5 MHz
Signal
(EV-200D)
generator
45 ± 3 dBµ
* Desolder the IF pad to open.
Sweep
generator
38.9 ± 5 MHz
(sweep) marker:
Sweep
38.9 MHz (EV-200C,I,N)
TP2 39.5 ± 5 MHz
generator
(sweep) marker:
39.5 MHz (EV-200D)
70 ± 3 dBµ
* Desolder the IF pad to open.
Pattern
generator
Color bar
Pattern
38.9 MHz
generator
(EV-200C,I,N)
TP2
39.5 MHz
Signal
(EV-200D)
generator
70 ± 3 dBµ
Video Detection Coil Adjustment
EV-500
Signal
generator
Input
TP2
Input
Adjust
Signal Connection
Low-pass filter
T200
Oscilloscope
AFT Coil Adjustment
EV-500
set
Input Output
TP2 TP4
Voltmeter
T201
Oscilloscope
Contrast Adjustment
Signal
generator
Input
TP2
Oscilloscope
VR300
— 7 —
set
Low-pass
filter
Output
TP3
Output Output
Point
Adjust to obtain the minimum
TP3
DC level.
Oscilloscope
Adjust to obtain a 1.4 ± 0.2 V
reading on the voltmeter.
TP4
Confirm that the marker is at
the middle of the S-curve on
the oscilloscope.
Vcc2-3
EV-500
10 kohm
set
CP312 (KILLER)
Output
TP5(VC)
Adjust so
that the step
form wave
TP5
becomes 2.2
± 0.1 Vp-p.
Oscilloscope
Result
Voltmeter
Oscilloscope
2.2±0.1 V
P.P