Trimble R6/R7 GPS and Trimble R8 GNSS Receivers User Guide 143
Troubleshooting C
Trimble R6 and R7 GPS/R8 GNSS Receiver Operation
C.2 Receiver issues
The following table describes some possible receiver issues, possible causes, and how
to solve them.
Issue Possible cause Solution
The receiver does not
turn on.
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.
Receiver does not log
data.
Insufficient internal memory. Delete old files using the GPS
Configurator or Trimble Survey
Controller software, or by holding
down
[P] for 30 seconds.
The receiver is tracking fewer
than four satellites.
Wait until the SV Tracking LED is
flashing slowly.
The receiver is not
responding.
Receiver needs soft reset. Power down the receiver and power
back up.
Receiver needs full reset. Hold down
[P] for 30 seconds.
If you want to retain data files,
remove the CompactFlash card first.
Reference receiver is
not broadcasting.
Port settings between
reference receiver and radio
are incorrect.
Using the Trimble Survey Controller
software, connect to the reference
radio through the receiver. If no
connection is made, connect directly
to the radio and change the port
settings. Try to connect through the
receiver again to ensure that they are
communicating.
Faulty cable between receiver
and radio.
Try a different cable.
Examine the ports for missing pins.
Use a multimeter to check pinouts.
No power to radio. If the radio has its own power supply,
check the charge and connections.