INFICON Maxtek PM-700 Plating Monitor - Manual (Page 72)

PM-700 SERIES PLATING MONITOR
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4. Faulty DAC outputs: External recording equipment puts
an excessive load on the DAC.
Improper DAC wiring.
Programmable DAC ranges are
improperly set in the monitor.
5. Monitor does not retain
programmed data in memory:
Failure in RAM power circuitry.
Aged or defective battery.
5.2 FAIL MESSAGES FOLLOWING POWER ON
The monitor's self test features detect several system failures. The specific
failures are described below. Upon detection of a failure the appropriate message
is displayed. There are basically two types of system failures; failures which may
not be reset by the operator and those that may. The E FAIL and I FAIL messages
can NOT be reset. They may be cleared only by the replacement of the defective
components. These failures are displayed continuously and ALL OTHER
SYSTEM OPERATIONS ARE DISABLED. For these internal failures, it is
recommended that the unit be returned to the factory for repair. On failures that
may be reset, the front panel display alternates the particular failure message and
the Rate and Thickness values prior to the failure. The display continues to
alternate the failure until the fault has been reset. Following is a summary of
detected failures, with displayed messages and the necessary actions to reset them.
Detected Failure Failure Message Reset by
Power Failure P FAIL Press STOP Button
Sensor Failure O FAIL If less than 2 seconds:
Self clearing
If greater than 2 seconds:
Press STOP button
Invalid Parameters C FAIL Press STOP button, parameter
values will be preset
RAM Failure I FAIL Replacement of defective
RAM(s)
ROM Failure E FAIL Replacement of defective
ROM(s)
5.2.1 Power Failure
Since power interruptions may seriously affect the run, indication of any
significant A.C. line disruptions is provided by the P FAIL message.