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Troubleshooting the Analyzer
To perform initial verification
To perform initial verification
Use this test to check signals that are vital to the operation of the
analyzer.
1 Check voltage selector switch and fuse.
a Check that the voltage selector switch on the rear of the analyzer
is set for the local line voltage.
b Check that the correct line fuse is installed in the rear panel fuse
holder.
For information on the voltage selector switch and line fuse, see
‘’To change the line-voltage selector switch’’ and ‘’To change the
fuse’’ in chapter 1 of the Agilent 89410A Installation and
Verification Guide.
2 Check power supply LEDs and fan.
a Check that no power supply fault LEDs are lit and that DS 440
(green) is lit.
b If any fault LEDs are lit or if the green power valid LED (DS 440)
is not lit, go to page 1-15, ‘’To troubleshoot the power supply.’’
c Check that the fan is turning at a moderate speed for normal room
temperature.
The fan speed increases as the analyzer’s internal temperature
increases. If the fan is turning too fast, check that the air flow
around the analyzer is not constricted and that the ambient
temperature is between 0 and 55 °C.
d If the fan is not turning, go to page 1-15, ‘’To troubleshoot the
power supply.’’
This quick check does not completely check the power supply. If a
power supply failure is still suspected, go to page 1-15 ‘’To
troubleshoot the power supply.’’
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