Casio EV-2500B Service Manual & Parts List page 10

* Desolder the IF pad to open.
Pattern
generator
Input Input
Connection Point
Pattern
Color bar
generator
45.75 MHz
TP2
Signal
45 ± 3 dBµ
generator
* Desolder the IF pad to open.
Sweep
generator
38.9 ± 5 MHz
Sweep
(sweep) marker:
TP2
generator
45.75 MHz
70 ± 3 dBµ
* Desolder the IF pad to open.
Pattern
generator
Pattern
Color bar
generator
45.75 MHz
TP2
Signal
70 ± 3 dBµ
generator
Video Detection Coil Adjustment
EV-2500
Signal
generator
Input
TP2
Input
Adjust
Signal Connection
Low-pass filter
T200
Oscilloscope
AFT Coil Adjustment
EV-2500
set
Input Output
TP2 TP4
Voltmeter
T201
Oscilloscope
Contrast Adjustment
Signal
generator
Input
TP2
Oscilloscope
VR300
— 9 —
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-2500
10 kohm
set
CP312 (KILLER)
Output
TP5
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