AE–1800 Instruction Manual
User-Level Troubleshooting
5. User–Level
Troubleshooting
A list of common troubles the user may experience while operating the equipment is
given below along with recommended remedies for such troubles. If a problem persists,
contact your dealer for assistance, giving as much information as possible about the
symptom, self–diagnostic tests results (paragraph 4.13), power supply voltage, antenna
configuration, operating frequency, control and menu settings used, serial number of,
and
*
1
software version (
VER
.) and revision (
REV
.) numbers of, your equipment.
*
1
The software version and revision numbers are displayed in the opening message window
that appears briefly at power–up. Those data will also be displayed when the self–diagnostic
tests are conducted (paragraph 4.13).
< WARNING >
NO USER–SERVICEABLE PARTS ARE INSIDE THE CABINET. QUALIFIED
PERSONNEL SHOULD MAKE IT SURE TO SWITCH THE EQUIPMENT OFF AND
UNPLUG THE POWER CORD BEFORE OPENING THE CABINET FOR INSPECTION
OR REPAIRS.
5 . 1 . P ow er– U p
P r o b l em s
The following description of the symptoms assumes that the equipment was working
correctly for some time after its initial installation.
Symptom
Suggested Solution
The equipment cannot be turned on
.
1. Check if the power cord is plugged into the
three–pin rear panel connector (
POWER
).
2. Check if the power cord is connected to the
ship’s DC power source with the correct
polarity.
NOTE: Reversing the power cord polarity
causes the fuse (3A) to blow.
3. Check the voltage of the power source.
NOTE: The nominal power supply voltage is 24
VDC. The equipment works safely over the
voltage range from 11 to 36 VDC
.
4. Check the fuse inside the rear panel fuse
holder
. If it is found blown, replace it with
a correct replacement ( 3A, 5.2
X
20mm)
.
5. If it blows again, unplug the active
antenna cable from the rear panel
connector, and then check if the problem
persists. If it does not, suspect that the
antenna amplifier or the cable developed
a short. Replace the antenna and cable.
6. If replacing the antenna still does not
correct the problem, suspect that the
Main PCB has become defective. Ask your
dealer/qualified engineer to check each
board by replacement.
7. If all attempts above fail, ask your
dealer/qualified service engineer to
replace the CPU PCB.
