This is an unlikely cause for a Temperature zone has timed out message. Normally a failed sensor will result in one of the following messages from MS Status:
If, however, you see the timeout message and have exhausted all other possible causes, investigate the possibility of a failed sensor.
Vent the MSD.
Open the vacuum manifold.
Inspect the ion source wiring. Make sure the wiring for the ion source temperature sensor is connected to the feedthrough board.
If the wiring is correctly connected and the sensor still does not work, replace the source heater assembly (heater, sensor, and heater block).
Refer to the MSD maintenance documentation for instructions for venting the MSD, opening the vacuum manifold, and replacing the source heater assembly.
Vent the MSD.
Open the vacuum manifold.
Inspect the ion source wiring. Try to identify whether the sensor wiring is shorted to a grounded surface.
If the wiring appears to be correct, and the sensor still does not work, replace the source heater assembly (heater, sensor, and heater block).
Refer to the MSD maintenance documentation for instructions for venting the MSD, opening the vacuum manifold, and replacing the source heater assembly.
Vent the MSD.
Open the vacuum manifold.
CAUTION! Take precautions against electrostatic discharge (ESD) any time you open the vacuum manifold but especially when working near the mass filter (quad) contacts. These contacts can carry harmful electrostatic discharge to sensitive components on the side board.
Inspect the mass filter (quad) sensor wiring. Make sure the wiring for the sensor is connected to the feedthrough board.
If the wiring is correctly connected, and the sensor still does not work, replace the mass filter heater assembly (heater, sensor, and heater block).
Refer to the MSD maintenance documentation for instructions for venting the MSD, opening the vacuum manifold, and replacing the mass filter heater assembly.
Vent the MSD.
Open the vacuum manifold.
CAUTION! Take precautions against electrostatic discharge (ESD) any time you open the vacuum manifold but especially when working near the mass filter (quad) contacts. These contacts can carry harmful electrostatic discharge to sensitive components on the side board.
Inspect the mass filter (quad) sensor wiring. Try to identify whether the sensor wiring is shorted to a grounded surface.
If the wiring appears to be correct, and the sensor still does not work, replace the mass filter heater assembly (heater, sensor, and heater block).
Refer to the MSD maintenance documentation for instructions for venting the MSD, opening the vacuum manifold, and replacing the mass filter heater assembly.