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Troubleshooting the MSD
3
Temperature symptoms
Temperature symptoms
The MSD has three heated zones:
• Ion source (
Source
in the MSD ChemStation software)
• Mass filter (
in the MSD ChemStation software)
Quad
• GC/MSD interface (
Thermal Aux #2
in the MSD ChemStation software)
Each of these heated zones has a heater cartridge and temperature sensor. The ion
source and mass filter are powered and controlled by the MSD. The GC/MSD
interface is powered and controlled by the GC.
Ion source will not heat up
• High vacuum pump is off or has not reached normal operating conditions*
• Incorrect temperature setpoint
• Ion source has not had enough time to reach temperature setpoint
• Ion source heater cartridge is not connected*
• Ion source temperature sensor is not connected*
• Ion source heater failed (burned out or shorted to ground)*
• Ion source temperature sensor failed*
• Source power cable is not connected to the side board*
• MSD electronics are not working correctly
* These will cause an error message
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