MBD-2 Operating Manual 22
15-00167, Rev 1
7 Troubleshooting
7.1 Display Messages
The MBD-2 will display messages or characters on the LCD display during certain conditions.
This section describes the displayed messages, their meaning and how to correct:
7.1.1 Display Messages: Problems and Resolutions
Table 6: Display Message Table
Display Message Problem / Resolution
Problem: Operating temperature is below the lower temperature threshold of
-10°C. During this condition, the read-out process is not performed.
Resolution: Move device to a warmer environment. This can be within a pocket,
inside layers of a garment. Once the temperature is stabilized, the Lo.t message
is removed.
Problem: Operating temperature is above the upper temperature threshold of
+50°C. During this condition, the read-out process is not performed.
Resolution: Move the device to a cooler environment
Problem: If PbAt permanent on display, battery exhausted
Resolution: Replace with a new CR2450 battery, Section 3.2 Batteries
Problem:
• If dbAt cycling on the display, less 25% life remains
• If dbAt permanent on display, battery exhausted
Resolution: Replace with 3 new CR1025 battery, Section 3.2 Batteries
Problem: A Parameter Error has been detected, Section 6.1.2 Error Code Table
Resolution: Remove device from service. Return for Warranty Repair
Problem: One or more detectors has reached saturation
Resolution:
• OF:t Overflow Total Dose: the total dose has reached/exceeded 3,750 cGy
• OF:G Overflow Gamma: the gamma dose has reached/exceeded 2,500 cGy
• OF:n Overflow Neutron: the neutron dose has reached/exceeded 1,250 cGy
- - - -
(four dashes)
Problem: One or more detectors cannot report a measurement value(s)
Resolution: Remove device from service. Remove and replace battery and
observe display. If the problem persists, return device for Warranty Repair
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