34-24 TASKS 810-811
SIL ALL
Page 209 D633A103-SIL Jun 15/2008

B.  Possible Causes
(1)
Integrated Standby Flight Display Program Pins.

(2)
Integrated Standby Flight Display, N226.

C.  Related Data
(1)
(SSM 34-24-15).

(2)
(WDM 34-24-15).

D.  Initial Evaluation
(1)  
Make sure that this circuit breaker is closed:

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

(2)  
If PROGRAM PIN ERROR does not show on the integrated standby flight display, then there was an intermittent fault.

(3)  
If PROGRAM PIN ERROR shows on the integrated standby flight display, then do the Fault Isolation Procedure below.

E.  Fault Isolation Procedure
(1)  Do this check of the integrated standby flight display program pins:
(a)  
Open this circuit breaker and install safety tag:

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

(b)  
Remove the integrated standby flight display, N226. To remove it, do this task: Integrated Standby Flight Display Removal, AMM TASK 34-24-02-000-801.

(c)  
Do a continuity check of the wiring between these pins of connector D10853 (WDM 34-24-15):

D10853  D10853
pinG -------------------pinD pinG -------------------pinK

(d)  
Make sure that these program pins of connector D10853 are open:
1) B,C,E,F,M,N,P,S,Z.

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

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

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

(g)  
If the test in the installation task for the integrated standby flight display is satisfactory and PROGRAM PIN ERROR does not show, then you corrected the fault.

(h)  
If PROGRAM PIN ERROR shows on the integrated standby flight display, then continue.

EFFECTIVITY SIL ALL  34-24 TASK 811 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 210 Jun 15/2008 

(2) 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 test in the installation task is satisfactory and the PROGRAM PIN ERROR does not show on the integrated standby flight display, then you corrected the fault.
-------------------------END OF TASK ---------------------------
812.  SPD Flag on the Integrated Standby Flight Display -Fault Isolation
A.  Description
(1)  The SPD flag shows when there is a loss of standby airspeed function.
B.  Possible Causes
(1)  
Alternate pitot system.

(2)  
Alternate static system.

(3)
Integrated standby flight display.

C.  Related Data
(1)
(SSM 34-24-15).

(2)
(WDM 34-24-15).

D.  Initial Evaluation
(1)  
This is the primary circuit breaker related to the fault:

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

(2)  
If the SPD flag does not show on the integrated standby flight display, then there was an intermittent fault.

(3)  
If the SPD flag shows on the integrated standby flight display, then do the Fault Isolation Procedure below.

　
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