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3. MAINTENANCE, TROUBLESHOOTING
3-2
3.2 Fuse Replacement
The fuses on the PWR Board (24P0105) inside the Processor Unit protect the system
from overvoltage and overcurrent. If the power is not on, have a technician check for
blown fuse(s). If a fuse(s) has blown, replace the fuse(s) with one of the same rating.
If the fuse(s) blows again, contact your dealer.
3.3 Troubleshooting
If the equipment appears to be abnormal, follow the procedure in the table below to
try to restore normal operation. If you cannot restore normal operation, do not check
inside the equipment. Get a qualified technician to check the equipment.
Name Type Code No. Qty
Fuse FGMB 250V 2A PBF 000-157-497-10 2
Fuse FGMB 250V 3A PBF 000-157-568-10 1
Problem Remedy
The Main Alarm Panel is not
powered.
• Check if the Processor Unit is ON.
• Check if the power cable is properly connected.
• Check if the power cable is damaged or corroded.
• Check the connection between the Processor Unit
and the Main Alarm Panel.
A key on the Main Alarm
Panel is operated, but there
is no response.
Reset the power with power switch on the ship’ switch-
board and operate the key. If the key does not respond,
request service.
The results of the ROM and
RAM test for the Main Alarm
Panel or Processor Unit
show an NG (No Good).
Reset the power with power switch on the ship’s switch-
board. If NG appears again, request service.
An alarm is not sent to a Cab-
in Panel.
Do the procedure in section 3.4 to check the connnec-
tions.
The message “Failure: Com-
munication” appears and the
buzzer sounds.
The message indicates communication error between
Main Alarm Panel and Processor Unit. Press any key to
silence the buzzer. Reset the power with power switch
on the ship’s switchboard. If the problem still occurs, re-
quest service.
The message “Failure: DC”
(or “Failure: AC”) appears
and the buzzer sounds.
The message indicates power failure of corresponding
power. Press any key to silence the buzzer. Check the
power supply.
Use the proper fuse.
Use of a wrong fuse can result in
damage to the equipment or cause fire.
WARNING