Casio EV-500C Service Manual & Parts List page 9

* Desolder the IF pad to open.
Pattern
generator
Input Input
Connection Point
Color bar
Pattern
38.9 MHz
generator
(EV-200C,I,N)
39.5 MHz
TP2
Signal
(EV-200D)
generator
70 ± 3 dBµ
* Short the IF pad.
Pattern
generator
Pattern
Color bar
generator
TP7
65 ± 5 dBµ
TV signal
generator
BCC Adjustment
Signal
generator
Input
TP2
Input Output
Adjust
Signal Connection
T300 Oscilloscope
AGC Adjustment
Signal
generator
Input
TP7
VR200 IF levelmeter
Vcom Adjustment
EV-500
set
Output
TP8
VR303 Oscilloscope
— 8 —
EV-500
set
Oscilloscope
Output
TP5(VC)
Output
Point
Adjust T300 so that the
difference
between pulses
TP5
A and B is less
than 0.2 V.
EV-500
set
Output
TP2
Adjust to obtain a 84 ± 2 dBµ
TP2
reading on the IF levelmeter.
Oscilloscope
Adjust VR303 so that the
high level of the square wave
is at -0.3
TP8
± 0.25 V.
Result
Pulse A Pulse B
IF levelmeter
-0.5 ± 0.25 V
5.0 ± 0.5 V