Loss of the Bus Output from the DMC 1 to the CFDIU
 1. Possible Causes
_______________
 - CFDIU (1TW)

 - DMC-1 (1WT1)

 - wiring from the CFDIU (1TW) to the DMC 1 (1WT1)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-32-00-740-003 Ground Scanning of the CFDIU
 AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
 AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
 AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3)
 AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3)
 ASM 31-32/02

 3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU EIS/DMC1/SPLY 10WT1 E11 49VU EIS/DMC1/SWTG 21WT1 E09
 B. Not applicable.
 C. Test Do the ground scanning of the CFDIU (Ref. AMM TASK 31-32-00-740-003).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message NO DMC 1 DATA:
 - replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
 (1) If the fault continues:
 - replace the DMC-1 (1WT1) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page 297
 May 01/05R CES

 (2) If the fault continues:
 - do a check and repair the wiring from the CFDIU (1TW) to the DMC 1 (1WT1) from pins AA/6D, 6E to pins AB/1C, 1D (Ref. ASM 31-32/02).
 B. Not applicable.
 5. Close-up
________
 A. Not applicable.
 B. Do the test given in Para. 3.B.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page 298
 May 01/05R
 CES  Loss of the Bus Output from the DMC 2 to the CFDIU

 1. Possible Causes
_______________
 - CFDIU (1TW)

 - DMC-2 (1WT2)

 - wiring from the CFDIU (1TW) to the DMC 2 (1WT2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-32-00-869-002 Procedure for Class 3 Faults Reading
 AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
 AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
 AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3)
 AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3)
 ASM 31-32/03

 3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU EIS/DMC2/SPLY 10WT2 Q08 121VU EIS/DMC2/SWTG 21WT2 R08
 B. Test On the CFDS MENU page, get access to the AVIONICS STATUS page (Ref. AMM TASK 31-32-00-869-002).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message NO DMC 2 DATA:
 - replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
 (1) If the fault continues:

 - replace the DMC-2 (1WT2) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).

 (2) If the fault continues:

 - do a check and repair the wiring from the CFDIU (1TW) to the DMC 2 (1WT2) from pins AB/6F, 6G to pins AB/1C, 1D (Ref. ASM 31-32/03).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page 299
 May 01/05R CES

 B. Do the test given in Para. 3.B.
　
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