Furuno FAR-1416, Operator'S Manual

Page: 192 / 226

7. MAINTENANCE, TROUBLESHOOTING
7-6
7.6 Advanced-level Troubleshooting
This section describes how to cure hardware and software troubles that should be car-
ried out by qualified service personnel.
Note 1: This radar equipment contains complex modules in which fault diagnosis and
repair down to component level are not practicable by users.
Note 2: When replacement of the SPU board is necessary, the previous settings can
be transferred to new SPU board as follows:
• Save your settings to a USB memory, referring to paragraph 6.3.3.
• After replacing the SPU board, load the entire contents of the USB memory to the
radar, referring to paragraph 6.3.4 for the procedure.
The waypoint and route reg-
istered are not displayed. The route menu is not set. Set [ROUTE SELECT] to [IN] in the
[ROUTE/WAYPOINT] menu.
Bearing is not stabilized Magnetic correction is re-
quired. Set the [MAGNETIC CORRECTION]
value of [HEADING SETTING] in the
[NAV DATA] menu.
CAN bus data is not re-
ceived. Response error Turn the network equipment on first, and
reset the power to recover.
Problem Possible cause Remedy
Cannot turn power on. 1) Blown fuse.
2) Mains voltage/polarity.
3) Power supply board.
4) Control unit is discon-
nected.
1) Replace blown fuse.
2) Correct wiring and input voltage.
3) Replace power supply board.
4) Confirm the control unit connection
and control cable.
Brilliance adjusted but
no picture. SPU board Replace SPU board.
Antenna not rotating. 1) Antenna drive mecha-
nism
2) Defective antenna drive
motor relay
1) Replace antenna drive mechanism.
2) Press relay reset button.
Data and marks not
displayed in transmit
status SPU board Replace SPU board.
Adjust GAIN with A/C
SEA set at minimum.
Marks and indications
appear but no noise or
echo. 1) IF amplifier
2) Signal cable between an-
tenna and display unit
3) Video amplifier board
1) Replace IF amplifier.
2) Check continuity and isolation of coax-
ial cable.
Note: Disconnect the plug and lugs at
both ends of coaxial cable before
checking it by ohmmeter.
3) Check video coax line for secure con-
nection. If connection is good, replace
SPU board.
Marks, indications and
noise appear but no
echo (transmission
leak representing own
ship position is absent) 1) TX high voltage protec-
tion circuit has activated.
2) Magnetron
3) Modulator board
4) SPU board
1) Reset power to restore normal opera-
tion.
2) Check magnetron current.
Replace magnetron.
3) Replace modulator board.
4) Replace SPU board.
Problem Possible cause Remedy