(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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