2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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49-00-81-810-871 Surge Control Valve (P18) Fault (131-9(A))
AMM 49-00-00-860-008 APU Start by External Power (131-9(A))
AMM 49-51-16-000-002 Removal of the Transducer - Differential Pressure
(8043KM) (131-9(A)) AMM 49-51-16-400-002 Installation of the Transducer - Differential Pressure (8043KM) (131-9(A)) AMM 49-51-17-000-002 Removal of the Transducer - Total Pressure (8044KM) (131-9(A)) AMM 49-51-17-400-002 Installation of the Transducer - Total Pressure (8044KM) (131-9(A)) AMM 49-51-52-000-003 Removal of the Surge Control Valve (8058KM) (131-9(A)) AMM 49-51-52-400-003 Installation of the Surge Control Valve (8058KM) (131-9(A)) 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
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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 '>' adjacent to the related CFDS failure message:
- the MCDU menu shows BLEED SHUTOFF DUE TO REVERSE FLOW CONDITION
(4) Do a check in the APU LAST LEG/PREVIOUS LEG report for the associated Fault Message: SURGE CONTROL VALVE P18
- do the applicable trouble shooting procedure (Ref. TASK 49-00-81-810-871).
(5) Fault Confirmation Procedure
(a) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
(b) Get access to the APU GND SCANNING menu.
4. Fault Isolation
_______________ R **ON A/C 001-049, 101-105, 107-107, 151-154, 201-207,
A. If the APU GND SCANNING menu gives the maintenance message:
SCV P18 / PRESS XDCR P24 / PRESS XDCR P23
associated with Fault Code Number (FCN) 89 or 91
- do a check for blockade of the APU inlet.
(1) If the APU inlet is blocked:
- do a repair/cleaning.
(2) If the APU inlet is clear:
- do a check for contamination/damage of the electrical connector P18 of the SURGE CONTROL VALVE (P18).
(a) If the electrical connector P18 is contaminated or damaged.
- do a repair/cleaning.
(b) If the electrical connector P18 is OK.
- replace the SURGE CONTROL VALVE (P18) (Ref. AMM TASK 49-51-52-000-003) and (Ref. AMM TASK 49-51-52-400-003).
「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 A281
201-210, Config-1 Aug 01/05 CES
(c) If the fault continues:
- do a check for contamination/damage of the electrical connector P24 of the DIFFERENTIAL PRESSURE TRANSDUCER (P24).
(d) If the electrical connector P24 is contaminated or damaged.
- do a repair/cleaning.
(e) If the electrical connector P24 is OK.
- replace the DIFFERENTIAL PRESSURE TRANSDUCER (P24) (Ref. AMM TASK 49-51-16-000-002) and (Ref. AMM TASK 49-51-16-400-002).
(f) If the fault continues:
- do a check for contamination/damage of the electrical connector P23 of the TOTAL PRESSURE TRANSDUCER (P23).
(g) If the electrical connector P23 is contaminated or damaged.
- do a repair/cleaning.
(h) If the electrical connector P23 is OK.
- replace the TOTAL PRESSURE TRANSDUCER (P23) (Ref. AMM TASK 49-51-17-000-002) and (Ref. AMM TASK 49-51-17-400-002).
1 If the fault continues:
_
- do a check of the flow sensor assembly and associated lines.
2 If the fault continues:
_
- do check/repair of the aircraft wiring between ECB (59KD) 59KD-AB/A2,A3 and the TOTAL PRESSURE TRANSDUCER (P23) P23/3,4 ECB (59KD) 59KD-AB/B2,B3 and the DIFFERENTIAL PRESSURE TRANSDUCER (P23) P23/3,4 ECB (59KD) 59KD-AB/G6 and the SURGE CONTROL VALVE (P18) P18/8 (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).
**ON A/C 001-049, 101-105, 151-199, 201-210,
Post SB 49-1062 For A/C 001-049,101-105,151-154,201-207,
A. If the APU GND SCANNING menu gives the maintenance message:
SCV (8058KM) / PRESS XDCRS (8043KM)/(8044KM)
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