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XTC/3 Operating Manual
10. crystal fail message
is always on
a. XIU/oscillator not
connected
a. verify proper sensor/oscillator
connections
b. XIU oscillator
malfunctioning
b. if available, insert a known
working XIU/oscillator in place of
suspect one; if XIU/oscillator is
confirmed bad, contact INFICON
c. defective cable from
feedthrough to
XIU/oscillator or from
XTC/3 to XIU/oscillator
c. use an ohm meter or DVM to
check electrical continuity or
isolation as appropriate
d. poor electrical contact in
the transducer,
feedthroughs, or in-vacuum
cable
d. use an ohm meter or DVM to
check electrical continuity or
isolation as appropriate
e. failed crystal/no crystal e. replace crystal/insert crystal
f. two crystals placed into
the crystal holder
f. remove one of the crystals
g. frequency of crystal out of
range
g. verify that the crystal frequency is
within the required range, use
INFICON crystals.
h. Xtal failed due to S or Q
failure.
h. clear S & Q values on
Sensor page
Table 6-1 Troubleshooting XTC/3 (continued)
SYMPTOM CAUSE REMEDY