7890B Ms Shutdown - Agilent Technologies 7890 Series Troubleshooting Manual

7890B MS Shutdown

Agilent 7890 Series Troubleshooting
If the 7890B receives a shutdown event from, or loses
communications with, a configured MS, the GC reacts with
changes such as:
• Turning off the column oven.
• Setting low pressures/flows for the MS flow path.
• Turning off hydrogen carrier gas flow, if used.
• Aborting a current run.
• Turning off the MS transfer line heater.
• Blocking all setpoint changes.
The exact changes depend on the event that triggered the
shutdown. For example, the GC may react differently to a
communications loss than to a failure in the MS high vacuum
pump.
When troubleshooting an MSD Shutdown:
1
Check all GC, MS and data system events and logs. The GC
will enter MS Shutdown if:
• The GC cannot maintain carrier flow into the MS.
• The MS reports a shutdown or fault.
• The GC and MS lose communications with each other.
2
Check the current communications status.
5977A, 7000C, 7010:
Press [MS/Aux Det].
a
The MS Communication setting should read Connected. If
b
not, check the entered GC and MS IP addresses in the GC,
the MS, and the PC. All GC and MS IP addresses must
match in all three places.
c
Check the GC and MS LAN connections. Is the LAN switch
or hub operating?
5977B:
Press [Config][MS/Aux Det].
a
The Lvds communication setting should read On.
b
c
Check the GC and MS LAN connections. Is the LAN switch
or hub operating?
5
Shutdown Symptoms
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