(4)
<TEST/CALIBRATION (Ref. Fig. 021) When the TEST/CALIBRATION line key is pressed, the MCDU shows: ESC PACKS ........................OFF, GROUND AIR SUPPLY ................OFF, LFES .................SET TO 14000 ft, ADIRS 1; 2; 3 .....................ON, MODE SEL ........................AUTO,
<CONTINUE
When the CONTINUE line keyis pressed, the test starts and the message (IN PROGRESS 90 SEC) comes on. After the test, one of the subsequent is shown:
-
TEST OK if there are no failures,
RESET LFES ---> AUTO
-
TEST FAILED
the maintenance message of the failure,
a fault code for shop maintenance.
-
TEST FAILED
TRY C/B RESET + NEW TEST
RESET LFES ---> AUTO
-NO TEST
MODE SEL AUTO + NEW TEST
1EFF : ALL 1 21-31-00Page 60 1 1 Aug 01/05R 1 1 1CES 1
INTENTIONALLY BLANK
R 1 1
21-31-00Page 61
1 1 Aug 01/05 1 1 1CES 1
MCDU - TEST/CALIBRATION Figure 021 (SHEET 1)
1EFF : 1 1R 1CES ALL 1 11 1 21-31-00 Page 62 Aug 01/05
MCDU - TEST/CALIBRATION Figure 021 (SHEET 2)
1EFF : 1 1R 1CES ALL 1 11 1 21-31-00 Page 63 Aug 01/05
(5) <CLASS 3 FAULTS (Ref. Fig. 022) The CLASS 3 FAULTS show all class 3 failures. The MCDU screen shows:
-the maintenance message of the failure,
-a fault code for shop maintenance,
-
the leg number,
-
the date and time when the fault occurs,
-
the flight phase,
-
the ATA number of the maintenance message,
-
the FIN of the failed component.
D. MCDU Maintenance Messages
NOTE : The details which follow are only applicable for:
____ -Cabin Pressure Controllers 9022-15702-9 and previous. If there is a failure, a maintenance message is shown on the MCDU. A failure in the CPCS can be class 1 or class 3. Class 1 failures require immediate maintenance action, as they always lead to a loss of the affected system with operational consequences. A class 3 failure is not as important, but should be observed for frequent recurance.
(1) Class 1 Maintenance Messages
NOTE : (XX) = the related fault code for shop maintenance.
____
-------------------------------------------------------------------------------| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
PRESS CONTR. 1 (XX) 21-31-34 CPC 1 fault
PRESS CONTR. 2 (XX) 21-31-34 CPC 2 fault
OUTFLOW VALVE AUTO 21-31-51 OFV auto motor 1 fault
MOTOR 1 (XX)
OUTFLOW VALVE AUTO 21-31-51 OFV auto motor 2 fault
MOTOR 2 (XX)
OUTFLOW VALVE 21-31-51 OFV electronic box 1 fault
ELECTRONIC 1 (XX)
OUTFLOW VALVE 21-31-51 OFV electronic box 2 fault
ELECTRONIC 2 (XX)
1EFF : ALL 1 21-31-00Page 64 1 1 Aug 01/05R 1 1 1CES 1
MCDU - CLASS 3 FAULTS Figure 022
1EFF : 1 1R 1CES ALL 1 11 1 21-31-00 Page 65 Aug 01/05
-------------------------------------------------------------------------------
| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
OUTFLOW VALVE FEEDBACK 21-31-51 OFV feedback module fault
ASSY (XX)
(2) Class 3 Maintenance Messages
NOTE : (XX) = the related fault code for shop maintenance.
____
-------------------------------------------------------------------------------| BITE TEST |-----------------------------------------------------------------------------| | INDICATION ON THE MCDU | ATA REF. | BITE DETECTION | -------------------------------------------------------------------------------
LFES (XX) 21-31-00 Landing field elevation selector fault
PRESS CONTR 1 (XX) 21-31-34 CPC 1 fault
PRESS CONTR 2 (XX) 21-31-34 CPC 2 fault
OUTFLOW VALVE BLOCKED (XX) 21-31-15 OFV fault (mechanical)
FMGS 1 OUT OF RANGE (XX) 22-83-34 CPC 1(2) receives incorrect FMGS data
FMGS 2 OUT OF RANGE (XX) 22-83-34 CPC 1(2) receives incorrect FMGS data
NO DATA FROM FMGS 1 (XX) 22-83-34 CPC 1(2) receives no data from the FMGS 1
NO DATA FROM FMGS 2 (XX) 22-83-34 CPC 1(2) receives no data from the FMGS 2
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