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Chapter 9 Simple fault diagnosis
MDC-7000/7900 Series
0093169010-10
9-12
B C
12000
6
34 Change to sea
stabilization.
Ship
’s bearing: THS, HDT, HDM, VTG
Course against water: VBW
Speed: VBW, VTG, VHW are not input.
B C
12000
7
64 Change to reference
antenna.
The set CCRP went beyond radar display.
Reference has moved to antenna position.
A A
12000
8
65 Cannot use the CCRP.
Cannot display CCRP position. Change
position or range.
B C
12000
9
21 Change to off process.
THS, HDT, HDM or VTG, RMA, RMC are
not inputted.
B C
12000 10
35 Change to ground
stabilization
Speed: VBW or VHW is not input.
Change to ground stabilization. Check
VBW or VHW sentence.
B C
12000 11
36 Change SOG input to
EPFS
Change SOG input source from SDME
(VBW) to EPFS (VTG).
B C
16000
1
47 Inter-switch not
connected.
NAV ports between master and slave are
not connected.
B C
16000
2
59 AIS alarm signal.
Alarm for abnormality is input in AIS alarm
terminal of AIS port or the terminals are
open.
B C
16000
3
66 No WGS84 DATUM.
Input geodetic system is not WGS84.
A A
17000
1
41 Antenna not connected.
Connector of Antenna may not be
connected to Antenna, or Scanner unit
may be faulty.
A A
17000
2
42 Antenna magnetron
current abnormal.
Magnetron may be at the end of life or
transmission high voltage fuse blown.
A A
17000
3
43 Antenna magnetron
heater abnormal.
Something is wrong with magnetron or
Scanner unit.
A A
17000
4
44 Antenna magnetron high
voltage abnormal.
High voltage fuse for transmission blown.
A A
17000
5
45 Antenna high voltage
abnormal.
High voltage fuse for transmission blown.
A A
17000
6
46 Motor voltage abnormal.
Motor voltage fuse blown.
A A
17000
7
48 Azimuth abnormal.
BP signal from Scanner unit is not
received.
May be fault in angle detecting sensor in
Scanner unit or poor connection at
connector.
A A
17000
8
49 Head line signal abnormal. SHF signal from Scanner unit is not
received.
May be fault in SHF sensor in Scanner unit
or rotation of antenna may be stopped.
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