6.1.3 Radio Frequency Unit (RFU)........................................................................................... 6-6
6.1.4 Antenna Control Unit (ACU) ........................................................................................ 6-6
6.1.5 Rate sensor .................................................................................................................... 6-7
6.1.5 Rotary Joint (RJ) ........................................................................................................... 6-7
6.1.6 Cable ................................................................................................................................. 6-7
6.1.7 Motor............................................................................................................................... 6-8
6.1.8 GPS Antenna .................................................................................................................. 6-8
6.2 BDE (GSC-502) ....................................................................................................................... 6-9
6.3 Option Interface Unit (OIU)................................................................................................. 6-10
6.3.1 Option Interface Board (OIB) ........................................................................................ 6-10
6.3.2 Terminal Board (TB) ................................................................................................... 6-10
6.4 GYRO I/F Box ........................................................................................................................6-11
6.4.1 GYRO I/F JB....................................................................................................................6-11
6.4.2 NSK Unit .........................................................................................................................6-11
CHAPTER 7. Service parts and replacement ......................................................................... 7-1
7.1 Service parts ........................................................................................................................... 7-1
7.2 Replacement procedures......................................................................................................... 7-2
7.2.1 Whole of ADE replacement .............................................................................................. 7-2
7.2.2 Radome opening and closing method .............................................................................. 7-2
7.2.3 ACU replacement ......................................................................................................... 7-2
7.2.4 RFU replacement.......................................................................................................... 7-2
7.2.5 BDE replacement.......................................................................................................... 7-2
7.2.6 OIB replacement........................................................................................................... 7-2
7.2.7 TB replacement............................................................................................................. 7-2
CHAPTER 8. Service menu ..................................................................................................... 8-3
8.1 Service man log-in (HANDSET)............................................................................................. 8-3
8.1.1 Memory clear.................................................................................................................... 8-4
8.1.2 TST Config........................................................................................................................ 8-5
CHAPTER 9. Software updating............................................................................................. 9-1
CHAPTER 10. Troubleshooting ............................................................................................ 10-1
10.1 Self Test............................................................................................................................... 10-1
10.2 Alarm Pack.......................................................................................................................... 10-1
10.3 Troubleshooting according to the phenomenon ................................................................10-11
10.3.1 NOT READY ...............................................................................................................10-11
10.3.2 POSITION?................................................................................................................. 10-12
10.3.3 Heading?..................................................................................................................... 10-12
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