-replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
 **ON A/C ALL
 B. Do the test given in para. 3.
 1 -EFF : ALL

-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A220
 --Aug 01/05 ---CES - Loss of the Bus from the CFDIU to the BMC1

 1. Possible Causes
_______________
 -BMC-1 (1HA1)
 -CFDIU (1TW)
 -wiring
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
 AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
 AMM 36-11-00-740-001 BITE Test of the BMC 1(2)
 AMM 36-11-34-000-001 Removal of the BMC (1HA1, 1HA2)
 AMM 36-11-34-400-001 Installation of the BMC (1HA1, 1HA2)
 ASM 31-32/04

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the BMC1 (Ref. AMM TASK 36-11-00-740-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message:
 NO DATA FROM CFDIU

 -replace the BMC-1 (1HA1) (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
 (1)
 If the fault continues:

 -do a check and repair the wiring of the ARINC 429 signal from the CFDIU (1TW) to the BMC1 (1HA1), pins AA/11F and AA/11G to pins AA/4C and AA/5C (Ref. ASM 31-32/04).

 (2)
 If the fault continues:

 -replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
 B. Do the test given in para. 3.
 1
 -EFF : ALL

-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A221
 --Feb 01/05R ---CES -

 Loss of the Bus from the CFDIU to the BMC2
 1. Possible Causes
_______________
 -BMC-2 (1HA2)
 -CFDIU (1TW)
 -wiring
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
 AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
 AMM 36-11-00-740-001 BITE Test of the BMC 1(2)
 AMM 36-11-34-000-001 Removal of the BMC (1HA1, 1HA2)
 AMM 36-11-34-400-001 Installation of the BMC (1HA1, 1HA2)
 ASM 31-32/05

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the BMC2 (Ref. AMM TASK 36-11-00-740-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message:
 NO DATA FROM CFDIU

 -replace the BMC-2 (1HA2) (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
 (1)
 If the fault continues:

 -do a check and repair the wiring of the ARINC 429 signal from the CFDIU (1TW) to the BMC2 (1HA2), pins AB/11D and AB/11E to pins AA/4C and AA/5C (Ref. ASM 31-32/05).

 (2)
 If the fault continues:

 -replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
 B. Do the test given in para. 3.
 1
 -EFF : ALL

-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A222
 --Feb 01/05R ---CES -

 Loss of the Engine Validity Signal between the EIU1 and the BMC1
 1. Possible Causes
_______________
 -CFDIU (1TW)
 -BMC-1 (1HA1)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
 AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
 AMM 36-11-00-740-001 BITE Test of the BMC 1(2)
 AMM 36-11-34-000-001 Removal of the BMC (1HA1, 1HA2)
 AMM 36-11-34-400-001 Installation of the BMC (1HA1, 1HA2)

 3. Fault Confirmation
　
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