9.2    TROUBLE SHOOTING 
9ņ12 
9 
y 
yyyy 
yyyy 
 
Table 9-13    Circuit Block to be Repaired (JMA-5212-4/6/4HS/6HS) 
Location  Circuit Block  Type  Remarks 
Scanner  Motor with gear 
7BDRD0048
㸨
 
DC brushless motor 
Scanner  Modulation circuit  CME-363  Excluding Magnetron 
Scanner  Receiver  NRG-610  Including CAE-529-1 
Scanner  Power supply circuit  CBD-1783   
Scanner  Encoder  CHT71A   
Scanner  Motor control power circuit  CBD-1779   
Scanner  Performance monitor  NJU-85   
Processor  Radar processing circuit  CDC-1350   
Processor  DSP circuit (TT)  NCA-877A   
Processor  Power supply terminal circuit unit  NBD-866A   
Processor  AIS processing circuit  NQA-2155   
Operation panel unit  Operation circuit  CCK-979   
Operation panel unit  PS2 connector circuit  CQC-1204   
Display  Brilliance control circuit  CCK-970  Brilliance controller 
NSK unit  Gyro IF circuit  CMJ-304E   
"*" means revision, such as A, B and so on.