7-6 DIAGNOSTICS
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Tel: 970-495-0187, Fax: 970-484-9350, Internet: www.ionsources.com
Help Code
or Error
Message
Description
Possible Causes
and Corrective
Action
Open or shorted cathode or keep-
er cables. Inspect the in vacuum
cable and replace if necessary.
No gas
fl
ow to the hollow cathode.
Due to empty gas bottle, valve off
somewhere in the gas supply,
faulty MFC, or MFC cable dam-
aged or unplugged.
Hot
Thermal Overload – Inter-
nal temperature in the pow-
er supply is too hot. Power
supply is in STANDBY.
Leave the power supply turned on
until the Hot message is cleared.
Make sure there is no blockage of
the vents on the rear panel.
Ambient temperature is too high.
Reduce ambient temperature be-
low 40°C.
Not Rdy
Not Ready. – Keeper Pow-
er Supply is in STANDBY.
Insuf
fi
cient line voltage. Message
will clear itself when there is
suf
fi
cient line voltage.
7.3 Emission and Discharge Power Supplies
The Emission and Discharge front panel displays have the additional func-
tion of displaying help codes and error messages. If it becomes necessary to
display a help code or an error message, these power supplies may switch to
standby mode, depending on the type of code or message. The front panel
will display “HLP” and a number for the help code. The error messages will be
displayed as one or two abbreviated words. A description of the help codes and
the error messages is given below in table 7-3 along with possible corrective
action that may need to be taken.
Table 7-3. Help codes and error messages for the Emission and Discharge
Power Supplies.
