Tr imble r7 and r8 – Trimble Outdoors R7 User Manual
Page 207
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Trimble R7/R8 GPS Receiver User Guide 1 9 5
Troubleshooting C
Tr
imble R7 and
R8
Table C.2 describes some possible receiver issues, possible causes, 
and how to solve them
.
Table C.2
Receiver issues
Issue
Possible cause
Solution
The receiver does not 
power up.
External power too low.
Check the charge on the external 
battery, and check the fuse if 
applicable. Replace the battery if 
necessary.
Internal power too low.
Check the charge on the internal 
batteries and replace if necessary. 
Ensure battery contacts are clean.
External power not properly 
connected.
Check that the Lemo connection is 
seated properly.
Check for broken or bent pins in the 
connector.
Faulty power cable.
Try a different cable.
Check pinouts with multimeter to 
ensure internal wiring is intact.
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