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25. MAINTENANCE AND TROUBLESHOOTING
25-7
25.6 Consumable Parts
The table below lists the consumable parts in the antenna unit, Monitor Units, Proces-
sor Unit and Sensor Adapters. Replace the parts before their expected expirations.
Consumable parts
The expected life figures are typical values. Actual life depends on usage and ambient
temperature.
Part Type Life Remarks
Antenna Unit
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)
Gear motor 10,000
hours
Carbon brush MG120-5X6X11 D8G (X-band) 10,000 hours Check for wear when re-
placing magnetron.
Replace if worn.
Magnetron RTR-078A: MAF1565N
(X-band, 12 kW)
5,000 hours Check no. of hours used
at TX time. Reset time
after replacement.
MG5436 (X-band, 25 kW) 5,000 hours
MG5223F (S-band, 30 kW) 7,000 hours
Monitor Unit
BEZEL (19) &
LCD ASSEMBLY
MU-190 50,000 hours
BEZEL (23) &
LCD ASSEMBLY
MU-231 50,000 hours
Processor Unit EC-3000
CPU Fan 109R0612G429 8.5 years
Power Fan 109P0612H761 8.5 years
Chassis Fan 109P0612H761 8.5 years
Sensor Adapter MC-3000S
MC-CS Board 24P0114 8.5 years
Sensor Adapter MC-3010A
MC-ANLG Board 24P0115 7.0 years