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If any of the listed problems should arise, follow the procedure
under the difficulty heading before contacting service personnel.
Gauge Fails Self-Test (He
3
Tube Error)
♦ Make sure the sample chamber is empty! Test will fail if a
sample is in the chamber.
♦ Check He
3
tube connections at the baseboard (open rear
panel on sample chamber).
♦ Exchange high voltage module with good module. The high
voltage module is located on the baseboard.
♦ The electrical connection between the sample chamber and
the control unit may not be good. Check the cable with an
ohm meter.
♦ Perform gauge initialization.
Gauge Does Not Turn “On”
♦ With an ohm meter, check the fuse inside the control unit.
♦ Ensure AC adapter is supplying at least 12 VDC.
♦ Check wall outlet for 120 VAC.
Control Unit Displays “Gauge Too Hot” Error
♦ Check for overheated condition.
♦ Check heat sensor connections to baseboard.
♦ Replace heat sensors. One is located above and one below
the sample chamber.
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