TASK 49-70-00-810-821
Data Memory Module P20 Fault (131-9(A))
1. Possible Causes
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- DATA MEMORY MODULE SHOWS WRAP TEST FAILURE
- DATA MEMORY MODULE SHOWS READ FAILURE
- DATA MEMORY MODULE SHOWS CHECKWORD FAILURE
- DATA MEMORY MODULE SHOWS APU S/N FAILURE
- DATA MEMORY MODULE SHOWS WRITE FAILURE
- damage/contamination of the electrical connector P20
- aircraft wiring
- DATA MEMORY MODULE (DMM) (P20)
- ECB (59KD)
- DATA MEMORY MODULE (DMM)
- DATA MEMORY MODULE (DMM) (8060KM)
- DATA MEMORY MODULE (DMM) (8062KM)
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific jumper
B. Referenced Information
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REFERENCE DESIGNATION
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AMM 49-00-00-860-008 APU Start by External Power (131-9(A))
AMM 49-00-00-860-009 APU Shutdown by External Power (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)) AMM 49-73-32-000-001 Removal of the Data Memory Module (8062KM) (131-9(A)) AMM 49-73-32-400-001 Installation of the Data Memory Module (8062KM)
(131-9(A))
ASM 49-61/01
「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, ∞∞49-70-00∞∞∞∞∞∞∞∞∞∞Page 216
201-210, Config-2 Aug 01/05 CES
3. Fault Confirmation
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A. Read-out of ECB Trouble-Shooting Data
(1) Get access to the APU LAST LEG/PREVIOUS LEG report.
(2) Push the '>'-key adjacent to the related CFDS failure message.
(3) If the MCDU menu shows:
DATA MEMORY MODULE SHOWS WRAP TEST FAILURE
- do the Fault Confirmation that follows:
(a) Set the APU MASTER SW to the OFF position and wait 35 seconds, minimum.
(b) Set the APU MASTER SW to the ON position.
(c) Get access to the APU LAST LEG/PREVIOUS LEG report.
(d) Push the '>'-key adjacent to TEST on the MCDU.
(4) If the MCDU menu shows:
DATA MEMORY MODULE SHOWS READ FAILURE
DATA MEMORY MODULE SHOWS CHECKWORD FAILURE
DATA MEMORY MODULE SHOWS APU S/N FAILURE
- do the Fault Confirmation that follows:
(a) Set the APU MASTER SW to the OFF position and wait 35 seconds, minimum.
(b) Set the APU MASTER SW to the ON position.
(c) Get access to the APU GND SCANNING menu.
(5) If the MCDU menu shows:
DATA MEMORY MODULE SHOWS WRITE FAILURE
- do the Fault Confirmation that follows:
(a) Start the APU (Ref. AMM TASK 49-00-00-860-008).
(b) Get access to the APU GND SCANNING menu.
(c) Shut down the APU (Ref. AMM TASK 49-00-00-860-009).
(d) Wait until the ECB (59KD) power-down, speed < 7% plus 30 seconds.
(e) Set the APU MASTER SW to the ON position.
「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, ∞∞49-70-00∞∞∞∞∞∞∞∞∞∞Page 217
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