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Troubleshooting
Troubleshooting Guide
6-6
42iQHL Instruction Manual
Problem
Alarm – Cooler Voltage too
High
Alarm – PMT Voltage too
Low
Alarm – PMT Voltage too
High
Alarm – Frequency too Low
Alarm – Frequency too High
Possible Cause
Action
Defective cooler
Replace cooler as needed.
Defective DMC board
Replace DMC board as needed.
Defective PMT
Replace PMT as needed.
Defective DMC board
Replace DMC board as needed.
Defective PMT
Replace PMT as needed.
Defective DMC board
Replace DMC board as needed.
Input board is out of
Recalibrate the Input board.
calibration
Input board is out of
Recalibrate the Input board.
calibration
Thermo Scientific
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