DIAGNOSTICS 7-5
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Tel: 970-495-0187, Fax: 970-484-9350, Internet: www.ionsources.com
action that may need to be taken.
Table 7-2. Help codes and error messages for the Keeper Power Supply.
Help Code
or Error
Message
Description
Possible Causes
and Corrective
Action
HLP 1
Current Latch – A high
current was encountered.
Power supply latched off to
prevent a failure.
Switch off the power until the
display is dark and then switch the
power back on to reset
HLP 2
Thermal Failure.
Open or shorted thermistor
detected. Contact KRI.
HLP 7
RS-485 Serial
Communication Lost.
Communication for remote RS-
485 communication was detected
and then lost.
Check connection of the RS-485
cables.
Make sure Auto Controller has in-
put power and is turned on.
HLP 8
RS-232 Interface Serial
Common Error.
High
current
fl
owing in the
ground connection of the
serial interface between
the unit and the PC. Shows
up only in remote RS-232
operation. Display says
HLP 8 for 5 seconds.
Informational display only. No
action taken on unit operation.
Unit recovers from error condition
if the problem goes away.
Make sure all of the equipment
has adequate grounding.
HLP 10
Start failed.
The hollow
cathode did not start.
Press and release the
STANDBY/ENABLE button or
remove the remote enable signal
to clear the code. The unit remains
in STANDBY until STANDBY/EN-
ABLE is pressed again or the re-
mote enable signal is reapplied.
