Furuno GP-90, Руководство по обслуживанию

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4. Troubleshooting
16
Beacon NG
Beacon OK
Yes
No
Station selection and
initialization are OK?
Receiving Condition?
(Menu, 7)
Defective U16
(Beacon receiver is detected automatically)
Defective cable between beacon receiver and
NP Board, or defective NP Board
No
Select an adequate station and initialize
correctly
Yes
Signal strength and S/N
ratio: 1 to 4 dB
Defective beacon antenna or defective
beacon receiver
Signal strength: 30 dB, SN ratio: less than 7 dB
Station ID is OK?
(Menu, 7)
Blank
Out of beacon signal coverage area, or poor
grounding of beacon antenna
Number displayed
DGPS Data is OK?
(Menu, 7)
Selftest is OK?
(Menu, 8,1)
“- -” or abnormal
Far from beacon transmitter, or poor
grounding of beacon antenna
Good
Beacon Station is normal?
(Menu, 7)
Abnormal
Defective GN-8091
Normal
Beacon transmitter problem
Symptom: No DGPS 2D/3D mode
“BEACON RCVR
INSTALLED” appears
at power - up display
Flow 3