Operator`s manual

Troubleshooting, Service and Specifications Chapter 11-1
11.1 Troubleshooting
For all fault finding, first check that the supply voltage is between 10-32 VDC
Symptom Check Remedy
No picture on display
screen
Check that the unit is
turned on
Press the [PWR] key on
keypad
Check fuse in power cable
fuse holder
Replace fuse. Use only type
T6.3A slow (5x20 mm)
Picture appears on the
display screen, but image
is too dark or too bright
Press [PWR], adjust light
and press [ENT]
No normal picture or key
operation
Turn unit off and on again
Disconnect power and
connect power again
Check via [MENU], [8],
[CHART] if C-MAP chart
is defective
Remove C-MAP chart if
defective
Return to factory presets,
see section 10.8
No GPS position update Check that position mode
is INTERNAL, refer
to interface setup in
[MENU],[8],[2], Position
Check antenna and cable Replace antenna or cable
Screen update is
extremely slow
Check that the stored
Tracks and Routes (not
currently in use) are not
all drawn up on the chart
Turn off ‘Course line’
for each stored route in
sec.9.2, and turn off ‘Dis-
play track’ in sec.9.6
Some values are missing
in the engine displays.
Check what type of data
output is transmitted
from the engine(s) via the
databus.
The engine source
controls the value of the
read-outs.
Unstable or no data from
SimNet.
Check connection of Sim-
Net cables. Check for sta-
ble 12 Volt supply. Check
termination is correct.
Use minimum one termi-
nation e.g. the power cable
with red disc.
Perform SimNet system
reset, see section 10.8.