SIL 001-004, 006, 007, 009-013, 016-019, 021, 101
(a)  Front of the ISFD Dedicated Battery System, M2100, E1-3
1) DBC Output breaker

SIL 005, 008, 014, 015, 020, 102-999
(b)  Front of the ISFD Dedicated Battery System, M2100, E4–1
1) DBC Output breaker

SIL ALL
(2)
If the integrated standby flight display shows, then there was an intermittent fault.

(3)
If the integrated standby flight display is blank, then do the Fault Isolation Procedure below.

EFFECTIVITY SIL ALL  34-24 TASK 804 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 201 Jun 15/2010 

F. Fault Isolation Procedure
(1)
Replace the integrated standby flight display, N226.
These are the tasks:
Integrated Standby Flight Display Removal, AMM TASK 34-24-02-000-801,
Integrated Standby Flight Display Installation, AMM TASK 34-24-02-400-801.

(a)  
If the installation task for the integrated standby flight display is satisfactory and the display shows, then you corrected the fault.

(b)  
If the integrated standby flight display is blank, then continue.

(2)
Replace the ISFD dedicated battery system, M2100. These are the tasks: ISFD Dedicated System and Battery Pack Removal, AMM TASK 34-24-03-000-801, ISFD Dedicated Battery System and Battery Pack Installation, AMM TASK 34-24-03-400-801.

(a)  
If the test in the installation task for the ISFD dedicated battery system is satisfactory and the integrated standby flight display shows, then you corrected the fault.

(b)  
If the integrated standby flight display is blank, then continue.

(3)  
Do this check of the wiring between the circuit breaker C1551 and the integrated standby flight display, N226:

(a)  
Remove the integrated standby flight display. To remove it, do this task: Integrated Standby Flight Display Removal, AMM TASK 34-24-02-000-801.

(b)  
Remove the ISFD dedicated battery system. To remove it, do this task: ISFD Dedicated System and Battery Pack Removal, AMM TASK 34-24-03-000-801.

(c)  
Disconnect the connector D41807P from the P18-2 panel.

(d)  
Make sure that this circuit breaker is open and has safety tag:

CAPT Electrical System Panel, P18-2
Row Col Number Name
D 8 C01551 ISFD

(e)  
Do a wiring check between the pins of these connectors (WDM 34-24-15):

D10853  D11281
pinD -------------------pin9
D11281  D41807P
pin6 -------------------pin29

(f)  
Repair the problems that you find and continue.

(g)  
Re-install the ISFD dedicated battery system, M2100. To install it, do this task: ISFD Dedicated Battery System and Battery Pack Installation, AMM TASK 34-24-03-400-801.

(h)  
Re-install the integrated standby flight display, N226. To install it, do this task: Integrated Standby Flight Display Installation, AMM TASK 34-24-02-400-801.

(i)  
Connect the connector D41807P to the P18-2 panel.

(j)  
Remove the safety tag and close this circuit breaker:

EFFECTIVITY SIL ALL  34-24 TASK 804 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 202 Jun 15/2008 

CAPT Electrical System Panel, P18-2
Row Col Number Name
D 8 C01551 ISFD

(k)  If the test in the installation task for the integrated standby flight display is satisfactory and the display shows, then you corrected the fault.
-------------------------END OF TASK ---------------------------
805. ALT Flag on Integrated Standby Flight Display -Fault Isolation
　
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