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C. Circuit Breakers
(1) These are the primary circuit breakers related to the fault:
CAPT Electrical System Panel, P18-1
Row Col Number Name
E 5 C01009 ADIRU LEFT DC
E 7 C01007 ADIRU LEFT AC

CAPT Electrical System Panel, P18-2
Row Col Number Name
E 8 C00425 ADIRU LEFT EXC

EFFECTIVITY

34-21 TASKS 833-835
SIL ALL
Page 268 D633A103-SIL Oct 15/2008

F/O Electrical System Panel, P6-1
Row Col Number Name
C 14 C01008 ADIRU RIGHT AC
C 15 C00426 ADIRU RIGHT EXC
C 17 C01010 ADIRU RIGHT DC

D. Related Data
(1)
(SSM 34-21)

(2)
(WDM 34-21-21)

(3)
(WDM 32-31-12)

E. Initial Evaluation
(1)
Do
the
applicable
ADIRS
BITE
procedure
(ADIRS
BITE
Procedure,
34-21
TASK
801)

(2)
If the maintenance code does not show on the ISDU, then there was a intermittent fault.

(3)
If the maintenance code shows on the ISDU, then do the Fault Isolation Procedure below.

F. Fault Isolation Procedure
(1) Do these steps to look for maintenance codes on the ISDU:
(a)  
Set the DSPL SEL switch on the ISDU to the HDG/STS position.

(b)  
Set the SYS DSPL to ’R’ for the right ADIRU and ’L’ for the left ADIRU.

(c)  
If there is a maintenance code, it will be shown on the right side of the right display of the ISDU.

NOTE: If there are more status codes, the CLR key will be on.
(d)  
If the CLR key is on, push it one time to show each maintenance code.

(e)  
Make a record of each maintenance code.

(2) Use the table that follows to find the correct task for each maintenance code:
Table 1.

LRU/SYSTEM  MAINTENANCE CODE  GO TO FIM TASK 
ADIRS  01  34-21
TASK
802
 
ADIRS  02  34-21
TASK
803
 
ADIRS  03  34-21
TASK
804
 
ADIRS  04  34-21
TASK
805
 
ADIRS  05  34-21
TASK
832
 
ADIRS  06  34-21
TASK
833
 
ADIRS  07  34-21
TASK
840
 
ADIRS  08  34-21
TASK
807
 
ADIRS  09  34-21
TASK
808
 
ADIRS  10  34-21
TASK
809
 
ADIRS  18  34-21
TASK
841
 
ADIRS  19  34-21
TASK
811
 

EFFECTIVITY SIL ALL  34-21 TASK 835 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 269 Oct 15/2008 

 

(Continued) 
LRU/SYSTEM  MAINTENANCE CODE  GO TO FIM TASK 
ADIRS  20  34-21
TASK
839
 
ADIRS  21  34-21
TASK
812
 
ADIRS  22  34-21
TASK
813
 
ADIRS  23  34-21
TASK
814
 
ADIRS  24  34-21
TASK
815
 
ADIRS  27  34-21
TASK
816
 
ADIRS  28  34-21
TASK
817
 
ADIRS  29  34-21
TASK
818
 
ADIRS  30  34-21
TASK
819
 
ADIRS  31  34-21
TASK
810
 
ADIRS  32  34-21
TASK
820
 
ADIRS  33  34-21
　
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