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Troubleshooting
To test the CRT monitor signals
To test the CRT monitor signals
Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and
assemblies.
Hazard voltages exist on the power supply, the CRT, and the CRT driver board. This
W A R N I N G
procedure is to be performed by service-trained personnel aware of the hazards involved,
such as fire and electrical shock.
Remove the cover of the instrument.
1
Check the CRT monitor input cable for the signals and the power supplies listed in
2
the table below. The cable is the wide ribbon cable connecting the monitor to the
acquisition board.
CRT Monitor Cable Signals
Pin
1
3
5
7
9
11
13
15
17
19
5–26
Signal
Pin
NC
2
Ground
4
+12 V
6
+12 V
8
+12 V
10
VSYNC
12
Ground
14
Ground
16
Ground
18
Ground
20
Signal
+12 V
Ground
Ground
Ground
HSYNC
+12 V
Ground
Video
NC
NC
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