TASK 49-00-81-810-863
APU Fault Relay failure (131-9(A))
1. Possible Causes
_______________
- FAULT RELAY SHOWS CIRCUIT FAILURE
- ANNUNCIATOR-LIGHT TEST AND INTERFACE-BOARD (7LP)
- aircraft wiring
- ECB (59KD)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 33-14-00-710-001 Operational Test of the Annunciator Light Test System in the Cockpit
AMM 33-14-33-000-001 Removal of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP, 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP)
AMM 33-14-33-400-001 Installation of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP, 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP)
AMM 49-61-34-000-003 Removal of the Electronic Control Box (ECB) (131-9(A)) AMM 49-61-34-400-003 Installation of the Electronic Control Box (ECB) (131-9(A)) ASM 49-61/01
3. Fault Confirmation
__________________
A. Read-out of ECB Trouble-Shooting Data
(1) Put the APU MASTER SW to the ON position.
(2) Get access to the APU LAST LEG/PREVIOUS LEG report.
(3) Push the '>'-key adjacent to the related CFDS failure message.
(4) If the MCDU menu shows:
FAULT RELAY SHOWS CIRCUIT FAILURE
- do the Fault Confirmation that follows:
(a) Get access to the APU GND SCANNING menu.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page B204
201-210, Config-1 Aug 01/05 CES 4. Fault Isolation
_______________
A. If the APU GND SCANNING menu gives the maintenance message:
WRG: APU FAULT RELAY
associated with Fault Code Number (FCN) 136
- do the Operational Test of the Annunciator Light Test System in the Cockpit (Ref. AMM TASK 33-14-00-710-001).
(1) If the FAULT/ON annunciator lights on the APU MASTER SW P/BSW (14KD) do not come ON:
- replace the ANNUNCIATOR-LIGHT TEST AND INTERFACE-BOARD (7LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
(a) If the fault continues:
- replace the APU MASTER SW (14KD).
(2) If the FAULT/ON annunciator lights on the APU MASTER SW P/BSW (14KD) come ON:
- do a check and repair of the aircraft wiring from the ECB (59KD) AB/H5 to the RELAY-ANNUNCIATOR-LIGHT TEST AND INTERFACE-BOARD (7LP) A/39 and the RELAY 2-FIRE EMER STOP (6WF) A/X2 (Ref. ASM 49-61/01).
(a) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
B. Do the test given in para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page B205
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-864
"LCV-OPEN"- Signal Fault (131-9(A))
1. Possible Causes
_______________
- LOAD VALVE OPEN SIGNAL SHOWS CIRCUIT FAILURE
- aircraft wiring
- ECB (59KD)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-61-34-000-003 Removal of the Electronic Control Box (ECB) (131-9(A)) AMM 49-61-34-400-003 Installation of the Electronic Control Box (ECB) (131-9(A)) ASM 36-12/01
3. Fault Confirmation
__________________
A. Read-out of ECB Trouble-Shooting Data
(1) Put the APU MASTER SW to the ON position.
(2) Get access to the APU LAST LEG/PREVIOUS LEG report.
(3) Push the '>'-key adjacent to the related CFDS failure message.
(4) If the MCDU menu shows:
LOAD VALVE OPEN SIGNAL SHOWS CIRCUIT FAILURE
- do the Fault Confirmation that follows:
(a) Get access to the APU GND SCANNING menu.
4. Fault Isolation
_______________
A. If the APU GND SCANNING menu gives the maintenance message:
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