Cal Amp LMU-26 Series, Install Manual, Page: 43 / 52

CalAmp | LMU-26xx Install Guide
MBUD-0199v3.3 Page 37
5.8 GUIDELINES FOR TROUBLESHOOTING COMMON PROBLEMS
The most common problems with the LMU-26xx installations are power connections and installation
location. The following table outlines potential problems with the LMU-26xx installation and suggestions
to resolve the issues.
Note: If you cannot resolve the problem, request a Return Material Authorization (RMA) by calling
1.866.456.7522.
Symptom Suggestions
No COMM or GPS LED’s

Recheck power connections. Be sure the red wire is
connected to co12V.

Be sure the inline fuse holders contain fuses.
COMM LED continues to blink
beyond an acceptable amount of
time.

Note the device ESN and IMEI numbers on the device label.
Call 1-866-456-7522 to verify the unit has been activated on
the cellular network.
GPS LED is mostly off, but blinks on.

Verify the device has good visibility of the sky. If metal
objects shadow the device, the device may have difficulty
acquiring a valid position fix or work intermittently.

Verify the device is installed with the “label-side up” facing
towards the sky.