Thermo Scientific 074114, Operator'S Manual

Page: 74 / 148

Dionex PDA Operator’s Manual
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Doc. 065378-01 1/12
To troubleshoot:
This message appears if you attempt to issue a command or select a parameter
while a diagnostic routine is running. Wait until the diagnostic routine is
completed before making any changes.
To troubleshoot:
This message appears if there is a communication failure between the DSP
(digital signal processor) and the CPU. Turn off the Dionex PDA power for
30 seconds, and then turn it on again. If the error message appears again,
contact Thermo Fisher Scientific for assistance.
A backup paddle alignment routine ensures that the Dionex PDA remains
functional even if the sensor cannot detect the filter wheel position. Thus, if
this is the only error reported, you may continue operation and defer
troubleshooting.
To troubleshoot:
1. Turn off the Dionex PDA power for 30 seconds, and then turn it on again.
2. If the error message appears again, check the deuterium lamp intensity:
a. Open the Chromeleon 7 Command window (see page 31 ) or the
Chromeleon 6.8 Commands dialog box (see page 32 ).
Diagnostic is running.
DSP communication failure.
Filter wheel sensor could not detect blocked position.
Filter wheel sensor could not detect open position.