INFICON STC-2000A Thin Film Deposition Controller Operating Manual - Manual (Page 272)

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STC-2000A DEPOSITION CONTROLLER
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Section 8.0 Maintenance/Problem Solutions
Maintenance of STC-2000A Deposition Controller
Hazardous Voltages Present
WARNING
There are potentially lethal voltages present within the STC-2000A control unit with
a line cord or an INPUT/OUTPUT cable attached. Service should be attempted by qualified personnel
only. Disconnect all cables and power cord when removing, installing, or servicing any component of the
STC-2000A instrument.
Static Sensitive
CAUTION
The STC-2000A and remote oscillator contain static sensitive components. Use
adequate and appropriate precautions when attempting any service to these devices. Discharge yourself by
touching the ground stud on the STC-2000A before disconnecting the power cord. The power cord
provides a path back to earth ground through the AC outlet. This will equalize the voltage potential
between you and the STC-2000A. It is recommended that work be done on a properly grounded mat or
table surface.
User Correctable System Problems
SYMPTOM CAUSE REMEDY
1. No LED/LCD displays a. Blown fuse (1 or more of 3) Replace fuse(s)
b. Power switch off Switch on unit.
(See section 2.21 for additional
diagnostic information) c. Line cord loose or unplugged Tighten cord.
2. Constant crystal fail message a. Bad or severely oxidized
sensor New crystal.
b. Crystal cable connections to
oscillator or sensor missing or
loose Check cables.
c. Severe material buildup on
edges of crystal holder causing a
short at the sensor Clean sensor.
3. Large thickness jumps during
deposition a. Defective crystal New crystal.
b. Crystal near end of life New crystal.
c. Particles or flakes on crystal
seating surface Clean sensor.
4. Crystal stops suddenly during
deposition before reaching typical
source life expectancy. a. Crystal being hit by small
droplets of molten material Move farther from source.
5. Thermal instability (large
change in thickness reading
during source warm-up) a. Poor crystal seating Clean sensor.
b. Poor or no water flow Correct flow.
c. Excessive heating due to
secondary electron formation in
some sputtering systems Increase water flow to
sensor.
See Section 3.19,
"OPTions/INFo" for diagnostics
SECTION 8.XX page 272 of 292