General Symptoms - Agilent Technologies 7250 Troubleshooting And Maintenance Manual

2 General Troubleshooting

General Symptoms

This section describes symptoms you might observe when first turning on the
GC/MS system. All of these symptoms would prevent operation of the system.
GC does not turn on
Nothing happens when the GC is switched on. The GC fans do not turn on and
the control display does not light.
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MS does not turn on
Nothing happens when the MS is switched on. The foreline pump does not start.
The cooling fan for the high-vacuum pump does not turn on.
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Foreline pump is not operating
The MS is receiving power (the fan is operating) but the foreline pump is not
operating.
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7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
Disconnected GC power cord
No voltage or incorrect voltage at the electrical outlet
Failed fuse in the GC
GC power supply is not working correctly
Disconnected MS power cord
No voltage or incorrect voltage at the electrical outlet
Failed primary fuses - Not user replaceable
MS electronics are not working correctly
A large air leak (usually the analyzer door open) has caused pumpdown
failure. You must power cycle the MS to recover from this state.
Disconnected foreline pump power cord
Malfunctioning foreline pump
Check power switch on foreline pump
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