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* Desolder the IF pad to open.
Pattern
generator
Input
Input
Connection Point
Pattern
Color bar
generator
45.75 MHz
TP2
Signal
70 ± 3 dBµ
generator
* Short the IF pad.
Pattern
generator
Pattern
Color bar
generator
TP7
65 ± 5 dBµ
TV signal
generator
Tint Adjustment
Signal
generator
Input
TP2
Input
Output
Adjust
Signal
Connection
VR301 Oscilloscope
AGC Adjustment
Signal
generator
Input
TP7
VR200 IF levelmeter
Vcom Adjustment
EV-2500
set
Output
TP8
VR303 Oscilloscope
— 10 —
EV-2500
set
Oscilloscope
CP204
Output
TP5
CP717
Output
Point
Adjust VR301 so that the
difference
between pulses
TP5
A and B is less
than 0.2 V.
EV-2500
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 -0.5
TP8
± 0.25 V.
Result
Pulse A
Pulse B
IF levelmeter
0 V
-0.5 ± 0.25 V
5.0 ± 0.5 V
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