6. MAINTENANCE, TROUBLESHOOTING
6-3
6.2 Life Expectancy of Major Parts
Parts Type Life expectancy Remarks
Antenna motor D8G-516 (24 rpm, X-band)
D8G-571 (42 rpm, X-band)
RM-7398 (21/26 rpm, S-band)
RM-7435 (21/26 rpm, S-band)
RM-9519 (45 rpm, S-band)
RM-9520 (45 rpm, S-band)
RM-9521 (45 rpm, S-band)
Gears more than
10,000 h
Wind load 100 kt
Magnetron MAF 1425B, MG4010
(X-band, 12 kW)
MG5436 (X-band, 25 kW)
MG5223F (S-band, 30 kW)
2,000 - 3,000 h
6.3 Replacing the Fuse
The fuse at the rear of the processor unit in the display unit protects the
equipment from overcurrent (overvoltage in case of AC set) and equipment fault.
If you cannot turn on the power, first check the fuse. Find the cause of the
trouble before replacing the fuse. Be sure to use the proper fuse. Use of a wrong
fuse can seriously damage the equipment and void the warranty.
WARNING
Use the proper fuse.
Use of a wrong fuse can result in damage
to the equipment or cause fire.
Ship’s mains and fuse to use
Unit Fuse to use
Processor Unit
24 VDC 20A
100-115 VAC 10A
220-230 VAC 5A
Display Unit MU-201CR
AC spec. 2A
DC spec. 5A
Display Unit MU-231CR
AC spec. 2A
DC spec. 6A