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7. Troubleshooting
All errors or failures will be shown as codes. The following table explains
the meaning of codes and solutions.
Code
Cause
Corrective Measure
204
Calculation error
Refer to user menu, repeat the
procedures.
208
Currency for LD
out of range
If cannot be solved after several times of
reboot, meaning the instrument is out of
work, please contact your distributor.
220
Battery too low
Recharge the battery
253 Temperature
too
low
Warm up instrument
255
Receiver signal
too weak,
measurement
time too long
Use target plate or change a good
refection.
256
Received signal
too strong
Target too reflective, use target plate or do
not aim at strong light objective.
Error
Hardware error
and uncertainty
error
Switch on/off the device several times. If
the symbol still appears, then your
instrument is defective. Please contact
your distributor.
