68 1100 Series DAD and MWD Reference Manual
3 Troubleshooting and Test Functions
Visible Lamp Voltage
The visible lamp voltage is missing.
The processor continually monitors the voltage across the lamp during
operation. If the lamp voltage falls below the lower limit, the error message is
generated.
Probable Causes
• Defective detector main board.
• Defective power supply.
Suggested Actions
✔ Exchange the detector main board.
✔ Exchange the power supply.
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