- install the SATCOM SDU

 - install the MCDU-1.

 「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 : 401-499, ∞∞23-28-00∞∞∞∞∞∞∞∞∞∞Page 207
 Aug 01/05 CES

 5. Close-up
________
 A. Do the test given in Para. 3.

 TASK 23-28-00-810-808

 Loss of the Data between the MCDU 2 and the SDU
 1. Possible Causes
_______________
 - MCDU-2 (3CA2)

 - SDU (105RV1)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 22-82-12-000-001 Removal of the MCDU (3CA1,3CA2,3CA3) AMM 22-82-12-400-002 Installation of the MCDU (3CA1,3CA2,3CA3) AMM 23-28-00-740-001 BITE Test of the Satellite Communication System AMM 23-28-34-000-001 Removal of the Satellite Data Unit (SDU) 105RV1 AMM 23-28-34-400-001 Installation of the Satellite Data Unit (SDU) 105RV1 ASM 23-28/06
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the SATCOM System (Ref. AMM TASK 23-28-00-740-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message MCDU2(3CA2)/SDU1(105RV1):
 - replace the MCDU-2 (3CA2) (Ref. AMM TASK 22-82-12-000-001) and (Ref. AMM TASK 22-82-12-400-002).
 (1) If the fault continues:

 - replace the SDU (105RV1) (Ref. AMM TASK 23-28-34-000-001) and (Ref. AMM TASK 23-28-34-400-001).

 (2) If the fault continues:

 - remove the SATCOM SDU

 - remove the MCDU-2

 - do a check and repair the wiring (from the MCDU-2 (3CA2) pins A/27,28 to the SDU (105RV1) pins AB/3E,3F and from the MCDU-2 pins A/24,25 to the first terminal block) (Ref. ASM 23-28/06)

 - install the SATCOM SDU

 - install the MCDU-2.

 「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 : 401-499, ∞∞23-28-00∞∞∞∞∞∞∞∞∞∞Page 209
 Aug 01/05 CES

 5. Close-up
________
 A. Do the test given in Para. 3.

 TASK 23-28-00-810-809

 Loss of the Data between the MCDU 3 and the SDU
 1. Possible Causes
_______________
 - MCDU-3 (3CA3)

 - SATELLITE DATA UNIT (5RV1)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 22-82-12-000-001 Removal of the MCDU (3CA1,3CA2,3CA3) AMM 22-82-12-400-002 Installation of the MCDU (3CA1,3CA2,3CA3) AMM 23-28-00-740-001 BITE Test of the Satellite Communication System AMM 23-28-34-000-001 Removal of the Satellite Data Unit (SDU) 105RV1 AMM 23-28-34-400-001 Installation of the Satellite Data Unit (SDU) 105RV1 ASM 23-28/06
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the SATCOM System (Ref. AMM TASK 23-28-00-740-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message MCDU3(3CA3)/SDU1(105RV1):
 - replace the MCDU-3 (3CA3) (Ref. AMM TASK 22-82-12-000-001) and (Ref. AMM TASK 22-82-12-400-002).
 (1) If the fault continues:

 - replace the SATELLITE DATA UNIT (5RV1) (Ref. AMM TASK 23-28-34-000-001) and (Ref. AMM TASK 23-28-34-400-001).

 (2) If the fault continues:

 - remove the SATCOM SDU

 - remove the MCDU-3

 - do a check and repair the wiring (from the MCDU-3 (3CA3) pins A/27,28 to the SDU (105RV1) pins AB/8J,8K and from the MCDU-3 pins A/24,25 to the first terminal block) (Ref. ASM 23-28/06)

 - install the SATCOM SDU

 - install the MCDU-3.

 「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 : 401-499, ∞∞23-28-00∞∞∞∞∞∞∞∞∞∞Page 211
 Aug 01/05 CES 5. Close-up

________
 A. Do the test given in Para. 3.

 TASK 23-28-00-810-811
 Loss of the Data between the ACARS MU (1RB1) and the SDU
 1. Possible Causes
_______________
　
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