- do a check and repair the wiring from the SDAC 2 (1WV2) pins AB/13J, 13K to the Air Conditining System Controller 1 pins AA/7E, 7F, (Ref. ASM 31-54/03).
 **ON A/C ALL
 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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A212
 Aug 01/05R
 CES  Loss of the PACK 2 CONT Bus or the ACSC2 Bus to the SDAC 1

 1. Possible Causes
_______________
 - SDAC-1 (1WV1)

 - CONTROLLER-PACK 2 TEMP (27HH)

 - CONT-AIR COND SYSTEM 2 (57HH)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 21-61-34-000-001 Removal of the Pack Controller (7HH, 27HH)
 AMM 21-61-34-000-002 Removal of the Air-Conditioning System Controller

 (47HH, 57HH)
 AMM 21-61-34-400-001 Installation of the Pack Controller (7HH, 27HH)
 AMM 21-61-34-400-002 Installation of the Air-Conditioning System

 Controller (47HH, 57HH)
 AMM 31-50-00-710-001 Ground Scanning of the Central Warning System
 AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
 AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2)
 ASM 31-54/03

 3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 21HH W22 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 23HH W21 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 24HH Y21 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 22HH Y20
 **ON A/C ALL
 B. Test Do the operational test of the central warning systems (Ref. AMM TASK 31-50-00-710-001).
 「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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A213
 Aug 01/05 CES

 4. Fault Isolation
_______________

 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 A. If the test gives the maintenance message SDAC1 : NO DATA FROM PACK2 CONT:
 - replace the SDAC-1 (1WV1), (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
 (1) If the fault continues:

 - replace CONTROLLER-PACK 2 TEMP (27HH), (Ref. AMM TASK 21-61-34-000-001) and (Ref. AMM TASK 21-61-34-400-001)

 (2) If the fault continues:

 - do a check and repair the wiring from the SDAC 1 (1WV1) pins AE/13A, 13B to the first terminal block , (Ref. ASM 31-54/03).
R **ON A/C 106-149, 303-399, 401-499,
 A. If the test gives the maintenance message:
 SDAC1 : NO DATA FROM ACSC2
 - replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
 (1) If the fault continues:

 - replace CONT-AIR COND SYSTEM 2 (57HH) (Ref. AMM TASK 21-61-34-000-002) and (Ref. AMM TASK 21-61-34-400-002)

 (2) If the fault continues:

 - do a check and repair the wiring from the SDAC 1 (1WV1) pins AE/13A, 13B to the Air Conditioning System Controller 2 pins AA/7E, 7F, (Ref. ASM 31-54/03).
 **ON A/C ALL
 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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A214
 Aug 01/05 CES Loss of the PACK 2 CONT Bus or the ACSC2 Bus to the SDAC 2

 1. Possible Causes
_______________
 - SDAC-2 (1WV2)

 - CONTROLLER-PACK 2 TEMP (27HH)

 - CONT-AIR COND SYSTEM 2 (57HH)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
　
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