Furuno FAR-2228-BB User Manual

6. MAINTENANCE, TROUBLESHOOTING
6-6
6.6 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 MAIN board is necessary, the previous settings can
be transferred to new MAIN board as follows:
• Save your settings to a SD-card, referring to section section 1.55.
• After replacing the MAIN board, load the entire contents of the SD-card to the radar,
referring to section section 1.55 for the procedure.
Range rings are not displayed Range rings are turned off Try turning on the range rings
with [RANGE RING] in the
[NAVTOOL] menu. If they do
not appear, their brilliance may
be too low. Adjust their bril-
liance in the [BRILL] menu.
Tracked target not tracked cor-
rectly
Poor definition of targets in
sea clutter
Adjust A/C SEA and A/C RAIN
referring to section 1.20 and
section 1.21.
Tuning adjusted but poor sensi-
tivity
Second trace echo rejector
on or dirt on radiator face
• Disable the second trace
echo rejector, referring to
section 1.29.
• Clean the radiator face.
Problem Possible cause Remedy
Cannot turn power on. 1) Blown fuse.
2) Mains voltage/polarity.
3) Power supply board
(PWR1 and/or PWR2) in-
side the Processor unit.
1) Replace blown fuse.
2) Correct wiring and input voltage.
3) Replace the faulty power supply
board.
Brilliance adjusted but
no picture.
MAIN board - inside the Pro-
cessor unit.
Replace MAIN board.
Antenna not rotating. 1) Antenna drive mecha-
nism
2) MTR-DRV board
1) Replace antenna drive mechanism.
2) Replace the MTR-DRV board.
Data and marks not
displayed in Transmit
status
MAIN board - inside the Pro-
cessor unit.
Replace MAIN 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 processor unit
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.
Problem Possible cause Remedy

Furuno FAR-2228-BB Specifications

General

Brand	Furuno
Model	FAR-2228-BB
Category	Marine Radar
Language	English