Furuno Navtex NX-700-A, Руководство по обслуживанию

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7.7 Troubleshooting
7-22
2. Reception trouble-1) No reception
Check it in the following setting.
- Ver-02.01
[MENU] -> NAVTEX -> Mask Mode -> Manual
- Ver-01.02
[MENU] -> NAVTEX -> Receiver Mode -> Manual
No reception
1. Check the cable between the Receiver unit
and the Display unit.
2. The problem may be caused due to the failure
of the RCV board or the CPU board.
To check the currently receivable stations and message types:
[MENU] -> Initialize 1 -> Available Rcv Station List
To set the received frequency:
[MENU] -> NAVTEX -> Local channel
To set the station and message type:
Ver-02.01
[MENU] -> NAVTEX -> Rcv Mask
Ver-01.02
[MENU] -> NAVTEX -> Rcv Station & Msg.
Can receiving monitor sounds be heard?
Are the receiving frequency, the receiving
stations and message types set properly?
Check monitor sounds in the following setting:
[MENU] -> System -> Signal monitor
Check the RX Test.
Are the results of RX Test OK on all frequencies
of 518 kHz, 490 kHz, and 4209.5 kHz?
Is voltage of +9 VDC applied to the
antenna terminal on NX-7001?
The Rx Test is executed in the following setting:
[MENU] -> Service -> Test
Note: To set the received frequency:
[MENU] -> NAVTEX -> Local channel
The problem may be caused due to the failure
of the CPU board or the RCV board.
If the test results are OK on any frequency, the
problem is caused due to the failure of the RCV
board.
Reference :
Check if reception is enabled when the antenna
is switched to FAX-5 used for the FAX
receiver or MF/HF WR, where practical.
The problem may be caused due to the failure of
the RCV board.
Failure of antenna unit NX-7H
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No