2. MAINTENANCE, TROUBLESHOOTING
2.2 Replacing the Fuse
The fuse (5 A) in the power cable protects the equipment against reverse polarity of the ship’s mains, overcurrent, and equipment fault. If the fuse blows, find the cause before replacing it.
CAUTION
Use the proper fuse.
Use of a wrong fuse may cause serious damage to the equipment and void the warranty.
2.3 Troubleshooting
The table below provides simple troubleshooting procedures which the user can follow to restore normal operation. If you cannot restore normal operation contact your dealer for advice.
Troubleshooting
If… | But… |
| Then… |
you pressed the | display contrast is poor | • | try adjusting LCD contrast. |
[POWER/BRILL] key to turn on |
|
| (See page 4.) |
the radar | nothing appears on the display | • | battery may have |
|
|
| discharged; check battery. |
|
| • check if fuse has blown. | |
| the control panel does not light | adjust PANEL DIMMER on | |
|
| page 1 of system menu. | |
the radar has warmed up and | the message “NO HEADING | check that the antenna cable is | |
you pressed the [MODE] key | PULSE” or “NO BEARING | firmly connected. | |
to transmit | PULSE” appears |
|
|
| neither noise or targets appear | • | try adjusting gain, A/C SEA |
| (characters and markers do) |
| and A/C RAIN. |
|
| • check antenna cable for | |
|
|
| damage. |
a key is pressed | nothing happens | key may be faulty. Contact | |
|
| your dealer. | |
the display freezes |
| press the [POWER/BRILL] key | |
|
| about five seconds to turn off | |
|
| the power and then turn it on | |
|
| again. | |
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