Husqvarna Automower 320 Technical Manual page 87

32 Tilt sensor problem
27 Settings restored
28 Memory circuit
problem
38/501 Electronics problem
502 Electronics problem
503 Electronics problem
504 Electronics problem
6. TROUBLESHOOTING
The tilt sensor has
incongruous values
User settings failed to save
and the mower has been
reset to factory settings.
Resetting settings
(message 27 above)
has failed.
Communication problems
between the MMI circuit board
and main circuit board
MMI circuit board memory
problem
Keypad problem
Display problem
Calibrate the tilt sensor. See 2.6.5 Special
settings on page 28.
Replace the main circuit board.
See 5.7 Replacing the main circuit board
on page 63.
If the fault occurs repeatedly, program the
mower with the most recent main program.
See 4.3.4 Programming on page 47.
If the fault occurs repeatedly, even using
the most recent main program, replace the
main circuit board. See 5.7 Replacing the
main circuit board on page 63.
Program the mower with the most recent
main program. See 4.3.4 Programming on
page 47.
Replace the main circuit board. See
5.7 Replacing the main circuit board on
page 63.
Restart the mower by placing the main
switch in position 0, wait 10 seconds and
then turn the main switch to position 1.
Make sure the cable between the MMI
circuit board and main circuit board is
connected properly. Check also that the
cable is not damaged, pinched, or that its
connector is not damaged.
Replace the MMI circuit board. See
5.8 Replacing the MMI circuit board on
page 65.
Replace the main circuit board. See
5.7 Replacing the main circuit board on
page 63.
Replace the MMI circuit board.
Make sure the cable between the MMI
circuit board and the keypad is properly
connected.
Replace the keypad. See 5.10 Replacing
the keypad on page 66.
Replace the MMI circuit board.
Replace the MMI circuit board.
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