Shutdown Symptoms 5
Agilent 7890 Series Troubleshooting 117
7890B MS Shutdown
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:
a Press [MS/Aux Det].
b The MS Communication setting should read Connected. If
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:
a Press [Config][MS/Aux Det].
b The Lvds communication setting should read On.
c Check the GC and MS LAN connections. Is the LAN switch
or hub operating?
To Next Page
Loading...
Need help?
General
