INFICON TM-400 Thin Film Deposition Monitor - Manual (Page 79)

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TM-350/400 Operating Manual
11.3.2 RAM Failure (I FAIL)
In the case of a failure in the Monitor's data memory or RAM, the I FAIL message
will be displayed. The shutter is automatically closed since reliable operation of the
Monitor is impossible until it is serviced. To confirm the RAM failure, cycle the AC
power to the instrument. The monitor will recheck its memory and if failed, will again
display the I FAIL message. If the I FAIL message is not displayed on power up the
second time, the problem may be intermittent, and it is recommended that your
monitor be returned for repair.
11.3.3 Film Data Failure (C-FAIL)
The C-FAIL message indicates that an error has been detected in the film data
storage area of the RAM and could not be corrected. When such an error is
detected, the parameters of all the films are automatically tested and set to default
if out of range. The monitor should not be started until the user has checked all of
the parameters for the desired film.
In the event of a C-Fail, the shutter is automatically closed since reliable operation
of the Monitor is impossible until the bad data is corrected.
11.3.4 Power Failure (P-FAIL)
Since power interruptions may seriously effect your run, indication of any
significant AC line disruptions is provided by the P-FAIL message. The shutter is
automatically closed if a run was in process. It may be continued, once all other
equipment is functioning normally again, by depressing the STOP key.
Note that it is normal for the power failure message to flash when the instrument is
first turned on. Press the STOP key to clear this message.
11.3.5 Oscillator Failure (O-FAIL)
An Oscillator Fail message indicates an improper or missing signal from the
oscillator. The problem is most likely with the sensor crystal; however, failures in
the oscillator, coaxial cables, Feedthrough, or sensor head can also generate this
failure message. Pressing the STOP key once the cause has been corrected clears
oscillator failures.
11.3.6 Sensor Card Failure (S FAIL)
The S FAIL message indicates that the sensor measurement card has failed or is
not installed. If this failure occurs then either the sensor card should be replaced or
the monitor should be returned for repair. Press the STOP key to clear an SFAIL
message.