3. Maintenance and Inspection
38
3.2 Periodic Inspection
Yearly inspections are recommended on the inside of the equipment and on its connections
with the Power Supply Unit and the other devices. For these inspections, you will be
charged.
Annual maintenance is requested by the Ship Class, please contact the Sales Department,
the nearest branch company, a branch office, a sales office, or any agent of Japan Radio
Co., Ltd.
3.3 Troubleshooting
If the equipment does not function correctly, check the equipment referring to the list down
below. Take the action recommended in the list. If the malfunction still lasts, contact the
Sales Department, the nearest branch company, branch office, sales office, or any agent of
Japan Radio Co., Ltd.
3.3.1 The Recording Control Unit (NDV-1850)
(1) Symptom Table for The Power Supply Unit (NBL-327)
Symptom Causes Actions to be taken
No power is supplied from the
switchboard.
Check the switchboard.
POWER SWITCH is not on. Turn on the POWER SWITCH.
The AC-line fuse is blown.
Check the AC-line fuse in the Power
Supply Unit. If it is blown, replace it
with a spare.
POWER LED fails to
light.
Fault in the Power Supply Unit
Contact us.
No power is supplied from the
switchboard.
Check the switchboard.
The BATTERY OP.
LED lights up.
The fuse for the AC power source is
blown.
Check the fuse for the AC power
source and, if it is blown, replace it
with a spare.
The battery cable is disconnected. Contact us.
The fuse for the battery is blown. Contact us.
BATTERY
ABNORMAL LED
lights up.
The battery is deteriorated. Check the expiry date of the battery.
If the battery has expired, contact
us.
FAN ABNORMAL
LED lights up.
The fan is not working. Contact us.
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