Failure of the SDAC 2 Pin Programming
1. Possible Causes
_______________
- SDAC-2 (1WV2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-50-00-710-001 Ground Scanning of the Central Warning System
AMM 31-50-00-740-002 Read SDAC and FWC Hardware Pin Programming
AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2)
AWM 31-54-06
31-54-00-991-001 Fig. 201
3. Fault Confirmation
__________________
A. Test Do the operational test of the central warning systems (SDAC) (Ref. AMM TASK 31-50-00-710-001).
4. Fault Isolation
_______________
(Ref. Fig. 201/TASK 31-54-00-991-001)
A. If the test gives the maintenance message SDAC2 PIN PROGRAM FAIL:
- read the SDAC 2 pin programming (Ref. AMM TASK 31-50-00-740-002).
(1) Compare the SDAC 2 pin programming with the state of the aircraft pin programming given in the ASM (Ref. AWM 31-54-06).
(a) If the pin programming is incorrect:
- repair the aircraft wiring.
(b) If the pin programming is correct:
- replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
B. Do the test given in Para. 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 : ALL ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A246
Aug 01/05R CES
Loss of One Analog Output of the Cabin Pressure Controller 1 to the SDAC 1
1. Possible Causes
_______________
- SDAC-1 (1WV1)
- VALVE-OUTFLOW (10HL)
- wiring
- VALVE-OUTFLOW (10HL), FEEDBACK ASSEMBLY
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-31-51-000-001 Removal of the Outflow Valve 10HL (From Inside) AMM 21-31-51-000-005 Removal of the Outflow Valve (10HL) - Feedback
Assembly 10HL-6 AMM 21-31-51-400-001 Installation of the Outflow Valve 10HL (From Inside) AMM 21-31-51-400-005 Installation of the Outflow Valve (10HL) - Feedback
Assembly 10HL-6 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 31-54/02 ASM 31-54/02
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/CAB/PRESS/CTL1 1HL D09
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 A247
Aug 01/05R
CES
4. Fault Isolation
_______________
A. If the test gives the maintenance message: SDAC1: NO CPC1 ANALOG SIGNAL
- 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:
- do a check of the wiring from SDAC 1 (1WV1) pins AB/10C, 10D to the first terminal block (Ref. ASM 31-54/02).
(a) If there is no continuity:
- repair the above wiring.
(b) If there is continuity:
- do a check of the wiring from SDAC 1 (1WV1) pins AE/10E, 10F to the first terminal block (Ref. ASM 31-54/02).
1 If there is no continuity:
_ - repair the above wiring.
2 If there is continuity:
_
- do a check of the wiring from SDAC 1 (1WV1) pins AE/10G, 10H to the first terminal block (Ref. ASM 31-54/02).
a If there is no continuity:
_ - repair the above wiring.
(2) If the fault continues
(a) replace the VALVE-OUTFLOW (10HL), FEEDBACK ASSEMBLY (if installed) (Ref. AMM TASK 21-31-51-000-005) and (Ref. AMM TASK 21-31-51-400-005).
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