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5. MAINTENANCE, TROUBLESHOOTING
5-2
5.2 Replacement of Fuse
Two fuses (125V 4A) in the processor unit protect the equipment from reverse polarity
of the ship's mains and equipment fault. If a fuse blows, you cannot turn on the power.
Have a qualified technician check the set.
5.3 Diagnostics
Your NAVpilot contains the diagnostics that check the processor unit, control unit,
NMEA 0183 input/output, CAN bus, keyboard, screen, rudder, and helm (Accu-Steer
FPS 12V/24V helm sensor only). The tests are for use by service technicians, but you
can do the tests to help the technician in troubleshooting.
5.3.1 Diagnostic menu
1. Press the MENU key to open the menu.
2. Rotate the Course control knob to select [OTHER MENU] then push the knob.
3. Rotate the Course control knob to select [SYSTEM SETUP] then push the knob.
4. Rotate the Course control knob to select the current setting for [DIAGNOSTIC]
then push the knob.
*: Appears when the Accu-Steer FPS 12V/24V is installed.
5. Rotate the Course control knob to select the item to test then push the knob to
start the test.
6. Press the MENU key continuously to quit the test and close the menu.
Parts name Type Code no. Remarks
Fuse FGMB 125V 4A PBF 000-157-482-10 Supplied as spare
parts
Use the proper fuse.
Use of a wrong fuse can cause fire or
damage the equipment.
WARNING
PROCESSOR UNIT
CONTROL UNIT
NMEA0183 TEST
CAN BUS TEST
KEYBOARD TEST
SCREEN TEST
RUDDER TEST
HELM SENSOR*
OFF