G-PILOT 3100
Operation Manual
NAVMAN
33
Appendix C - Troubleshooting
This troubleshooting guide assumes that you
have read and understood this manual.
It is possible in many cases to solve diffi cul-
ties without having to send the unit back to
the manufacturer for repair. Please follow this
troubleshooting section before contacting the
nearest Navman dealer.
There are no user serviceable parts. Specialized
methods and testing equipment are required to
ensure that the unit is reassembled correctly.
Repairs to the unit must only be carried out by a
service centre approved by Navman NZ Limited.
Users who service the unit themselves will void
the warranty. More information can be found on
our Website: www.navman.com.
1 Unit will not turn on:
a Fuse blown or circuit breaker tripped.
b Battery voltage is outside the range
10.5 to 16.5 V DC.
c Power/data cable damaged.
2 G-PILOT 3100 makes too frequent
course corrections:
The value of response is too low (see
G-PILOT 3100 Operation Manual
).
3 When sailing a straight course, the boat
drifts from side to side of the course:
a The boat should drift from side to side
of the course when the G-PILOT 3100
steering is optimized.
b Change to a profi le suitable for
boat speed and sea conditions (see
G-PILOT 3100 Operation Manual
).
c If the boat drifts too far from the
course, adjust response, ratio,
counter rudder gain, GPS gain (if
G-PILOT is in GPS mode) or wind
gain (if G-PILOT is in wind mode) (see
G-PILOT 3100 Operation Manual
).
4 When sailing a straight course, the boat
drifts off course:
a Change to a profi le suitable for
boat speed and sea conditions (see
G-PILOT 3100 Operation Manual
).
b Adjust response, ratio, counter rudder
gain, GPS gain (if G-PILOT is in
GPS
mode) or wind gain (if G-PILOT is
in wind mode) (see
G-PILOT 3100
Operation Manual
).
5 When making a large course change,
boat does not follow the expected
course:
a Change to a profi le suitable for
boat speed and sea conditions (see
G-PILOT 3100 Operation Manual
).
b Check turn rate is not too low (go
to TURN RATE in the OPTIONS
menu,
see G-PILOT 3100 Operation
Manual
).
c Adjust counter rudder gain (see
G-PILOT 3100 Operation Manual
).
6 Boat turns too sharply:
Reduce turn rate (go to TURN RATE
in the
OPTIONS
menu,
see G-PILOT
3100 Operation Manual
).
7 The word SIMULATE fl ashes on the dis-
play, values displayed are unexpected:
Unit is in simulate mode (
See
G-PILOT 3100 Operation Manual
).
8 The display fogs:
a Moist air has entered the breathing
tube at the rear of the unit. Air the
boat or run unit with backlight fully on.
b Water has entered the breathing tube.
Return unit for service.
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