W DOC AIRBUS | AMM A320F

BITE Test of the MMR

TASK 34-36-00-740-003-A
BITE Test of the MMR

ZONE: 210
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-010-A
Procedure to Get Access to the SYSTEM REPORT/TEST NAV Page
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
TASK 34-10-00-860-004-A
Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-01
Automatic Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-02
Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)
TASK 34-10-00-860-005-A
ADIRS Stop Procedure
3. Job Set-up
Subtask 34-36-00-861-053-A ** ON A/C NOT FOR ALL
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 34-36-00-860-056-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Do the EIS start procedure (PFD DU, ND DU and upper ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
   (2) Align the Inertial References (IR) (Ref. AMM TASK 34-10-00-860-004).
   (3) On the center pedestal, on RMP1 and RMP2:
  • Set the ON/OFF switch to ON.
  • Push the NAV and the LS keys.
   (4) On RMP1 or RMP2:
  • Set a non local ILS frequency.
   (5) On the EFIS control panel of the FCU:
  • Push the LS key (the green bars come on).
   (6) Do the procedure to get the SYSTEM REPORT/TEST NAV page (Ref. AMM TASK 31-32-00-860-010).
     (a) If the SYSTEM REPORT/TEST/NAV page shows ILS1 and ILS2 indications but not MMR1 and MMR2 indications, you must do the steps that follow:
       1 Make sure that the engines are shut down.
       2 Open CFDIU SUPPLY circuit breaker 2TW.
       3 Open CFDIU BACK UP circuit breaker 8TW.
       4 Make sure that MMR1 and MMR2 circuit breakers 42RT1 and 42RT2 are closed.
       5 After 30 seconds, close CFDIU circuit breakers 2TW and 8TW.
       6 After 180 seconds, get access to the SYSTEM REPORT/TEST/NAV page (the MMR indications are shown).
Subtask 34-36-00-865-120-A ** ON A/C NOT FOR ALL
C. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAUTO FLT/FMGC/110CA1B02
** ON A/C NOT FOR ALL
49VUNAV/MMR/142RT1G12
49VUCOM/RMP/12RG1G10
** ON A/C NOT FOR ALL
49VUAUTO FLT/FMGC/110CA1H08
** ON A/C NOT FOR ALL
121VUCOM NAV/MMR/242RT2K09
** ON A/C NOT FOR ALL
121VUCOM NAV/RMP/22RG2L02
121VUAUTO FLT/FMGC/210CA2M17
** ON A/C NOT FOR ALL
121VUCOM NAV/MMR/242RT2L07
4. Procedure
Subtask 34-36-00-740-052-B ** ON A/C NOT FOR ALL
A. BITE Test of the MMR
NOTE: The MMR1 shows indications on the CAPT PFD.
The MMR2 shows indications on the F/O PFD.
This test is for the MMR1. For the MMR2 use the indications between the parentheses.
ACTION
RESULT
1.On the MCDU:
On the MCDU:
  • Push the line key adjacent to the MMR1 (MMR2) indication.
  • The MMR1 (MMR2) page comes into view.
  • Push the line key adjacent to the SYSTEM TEST indication.
  • The MMR1 (MMR2) TEST 1/3 page with instructions comes into view.
  • Push the NEXT PAGE key.
  • The MMR1 (MMR2) TEST 2/3 page with instructions comes into view.
  • Push the NEXT PAGE key.
  • The MMR1 (MMR2) TEST 3/3 page with instructions comes into view.
  • Push the line key adjacent to the START TEST indication.
  • On the MCDU, the TEST IN PROGRESS 16S indication comes into view.
  • On the CAPT (F/O) PFD:
    the LOC and G/S scales go out of view,
    the LOC and G/S red warnings come into view for some seconds,
    the MASTER CAUT lights come on and the single chime sounds,
    the LOC and G/S scales come into view,
    the G/S index comes into view, moves up, moves down, then goes out of view, and simultaneously, the LOC index comes into view, moves to the left then to the right, then goes out of view,
    the MASTER CAUT lights go off and the single chime stops.
  • Push the line key adjacent to the YES indication.
  • The TEST OK indication comes into view.
  • Push the line key adjacent to the RETURN indication.
  • The TEST CLOSE-UP indication comes into view.
  • Push the line key adjacent to the RETURN indication.
  • The test procedure stops.
Subtask 34-36-00-740-052-C ** ON A/C NOT FOR ALL
A. BITE Test of the MMR
NOTE: The MMR1 shows indications on the CAPT PFD.
The MMR2 shows indications on the F/O PFD.
This test is for the MMR1. For the MMR2 use the indications between the parentheses.
ACTION
RESULT
1.On the MCDU:
On the MCDU:
  • Push the line key adjacent to the MMR1 (MMR2) indication.
  • The MMR1 (MMR2) page comes into view.
  • Push the line key adjacent to the SYSTEM TEST indication.
  • The MMR1 (MMR2) TEST 1/3 page with instructions comes into view.
  • Push the NEXT PAGE key.
  • The MMR1 (MMR2) TEST 2/3 page with instructions comes into view.
  • Push the NEXT PAGE key.
  • The MMR1 (MMR2) TEST 3/3 page with instructions comes into view.
  • Push the line key adjacent to the START TEST indication.
  • On the MCDU, the TEST IN PROGRESS 16S indication comes into view.
  • On the CAPT (F/O) PFD:
    the LOC and G/S scales go out of view,
    the LOC and G/S red warnings come into view for some seconds,
    the LOC and G/S scales come into view,
    the G/S index comes into view, moves up, moves down, then goes out of view, and simultaneously, the LOC index comes into view, moves to the left then to the right, then goes out of view.
  • Push the line key adjacent to the YES indication.
  • The TEST OK indication comes into view.
  • Push the line key adjacent to the RETURN indication.
  • The TEST CLOSE-UP indication comes into view.
  • Push the line key adjacent to the RETURN indication.
  • The test procedure stops.
5. Close-up
Subtask 34-36-00-860-057-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
   (1) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
   (2) On RMP1 and RMP2:
  • Release the NAV and the LS keys.
  • Set the ON/OFF switch to OFF.
   (3) On the EFIS control panel of the FCU, release the LS key (green bars go off).
   (4) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
   (5) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
   (6) On the MCDU, fully decrease the brightness of the MCDU screen (display off).
Subtask 34-36-00-862-053-A ** ON A/C NOT FOR ALL
B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:23:16 UTC
"WTRUIB" 2025