9.1  Fault Finding
y
yyyy
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9.1.2 Operation Checking 
 
When the system is operating, the operation status (located at the upper right of the screen) is 
changing pictures. 
If picture freeze occurred, turn off the system and restart the system. 
 
 
Operation status
 
 
 
 
9.1.3 Fuse Checking 
 
Melted fuses are caused by any clear cause.    When a fuse is replaced, it is necessary to check the 
related circuits even if there is no trouble.    In checking, note that there is some dispersion in the 
fusing characteristics.    Table 9-9 shows a list of fuses used in the equipment. 
 
Table 9-9  Fuse List 
9 
Location  Parts No. Current Rating Protection Circuit  Type 
F2 5A  ST4-5AN1 Radar process unit 
(JMA-5312-6/6HS) 
F3 10A 
I/F circuit PC410 
ST6-10AN1 
F2 10A  ST6-10AN1 Radar process unit 
(JMA-5322-7/9/6HS, 
JMA-5332-12) 
F3 10A 
I/F circuit PC410 
ST6-10AN1 
GYRO I/F unit  F1 to F4  0.5A  GYRO I/F circuit PC4201  MF51NR 250V 0.5
 
9-6