W DOC AIRBUS | AMM A320F

Installation of the On-Board Replaceable Module

TASK 23-73-21-400-001-A
Installation of the On-Board Replaceable Module

FIN: 116RH ** ON A/C NOT FOR ALL
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TASK 20-15-00-910-001-A
Handling Precautions for Electrostatic Discharge Sensitive Devices
TASK 23-73-00-740-005-B
Interface and Power-Up Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
TASK 23-73-00-869-001-A
OBRM - Download Procedure
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 26-10-00-710-801-A
Smoke Detection Function Cabin Assignment Module (SDF CAM) Layout Loading
TASK 26-10-00-740-801-A
BITE Test of the Smoke Detection Function - System Test
F On-Board Replaceable Module
3. Job Set-up
Subtask 23-73-21-861-051-A ** ON A/C NOT FOR ALL
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 23-73-21-865-050-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/1150RHG01
49VUCOM/CIDS/FLT ATTND PNL/ESS171RHH01
** ON A/C NOT FOR ALL
49VUCOM DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM/CIDS/FLT ATTND PNL/ESS171RHG03
49VUCOM NAV/CIDS/DIR2 ESS157RHG02
49VUCOM NAV/CIDS/DIR1 ESS150RHG01
** ON A/C NOT FOR ALL
121VUCOM CIDS FWD ATTND PNL170RHQ14
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM06
121VUCOM NAV/CIDS/DIR NORM/1151RHM05
** ON A/C NOT FOR ALL
121VUCOM/FAP1/NORM170RHQ14
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM07
121VUCOM NAV/CIDS/DIR NORM/1151RHM06
121VUCOM NAV/CIDS/FWD ATTND/PNL170RHQ14
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR2 NORM156RHM06
121VUCOM NAV/CIDS/DIR1 NORM151RHM05
121VUCOM/CIDS/FWD ATTND PNL/BAT149RHQ13
** ON A/C NOT FOR ALL
121VUCOM/CIDS/FLT ATTND PANL/BAT149RHQ13
** ON A/C NOT FOR ALL
121VUCOM/CIDS/DIR 2/BAT146RHP14
121VUCOM/CIDS/DIR 1/BAT147RHP13
4. Procedure
Subtask 23-73-21-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the On-Board Replaceable Module (OBRM)
F On-Board Replaceable Module ** ON A/C NOT FOR ALL
CAUTION: MAKE SURE THAT YOU USE WRIST STRAPS WHEN YOU REMOVE AND INSTALL AN ONBOARD REPLACEABLE MODULE (OBRM). WRIST STRAPS WILL PREVENT POSSIBLE ELECTROSTATIC DISCHARGES, WHICH CAN CAUSE DAMAGE TO THE OBRM'S.
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Before you touch the OBRM, do the procedure for devices that are sensitive to electrostatic discharge (Ref. AMM TASK 20-15-00-910-001).
   (4) Push the OBRM (4) carefully into the respective slot, the OBRM slot (5), until it locks in position.

NOTE: The I-PRAM, CAM and OBRM slot has the same dimensions. Thus it is mandatory to push the Compact Flashcard into the correct slot.
   (5) Make sure that the work area is clean and clear of tools and other items.
   (6) Close the cover (2) and the quick-release fastener (1).
Subtask 23-73-21-865-052-A ** ON A/C NOT FOR ALL
B. Remove the safety clips and tags and close these circuit breakers in this sequence:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUCOM CIDS FWD ATTND PNL170RHQ14
** ON A/C NOT FOR ALL
121VUCOM/FAP1/NORM170RHQ14
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/FWD ATTND/PNL170RHQ14
** ON A/C NOT FOR ALL
49VUCOM/CIDS/FLT ATTND PNL/ESS171RHH01
** ON A/C NOT FOR ALL
49VUCOM/CIDS/FLT ATTND PNL/ESS171RHG03
** ON A/C NOT FOR ALL
121VUCOM/CIDS/FLT ATTND PANL/BAT149RHQ13
** ON A/C NOT FOR ALL
121VUCOM/CIDS/FWD ATTND PNL/BAT149RHQ13
121VUCOM NAV/CIDS/DIR2 NORM156RHM06
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM07
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM06
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR1 NORM151RHM05
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/1151RHM06
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/1151RHM05
** ON A/C NOT FOR ALL
49VUCOM NAV/CIDS/DIR2 ESS157RHG02
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM NAV/CIDS/DIR1 ESS150RHG01
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/1150RHG01
** ON A/C NOT FOR ALL
121VUCOM/CIDS/DIR 1/BAT147RHP13
121VUCOM/CIDS/DIR 2/BAT146RHP14
Subtask 23-73-21-740-050-A ** ON A/C NOT FOR ALL
C. OBRM - Software Loading, Configuration Test, Interface and Power-Up Test
   (1) On the Flight Attendant Panel (FAP), push the SW Load key.
  • The indicator light in the SW Load key comes on.
  • The SOFTWARE LOADING page shows.
  • The message box WAIT UNTIL ALL CIDS COMPONENTS HAVE SENT THEIR CONFIGURATION shows.
  • Wait approx. 2 minutes, then the message box goes off.
   (2) If on the SOFTWARE LOADING page one or more components show with an amber background:
NOTE: If no component with an amber background shows on the SOFTWARE LOADING page, no OBRM software download is required.
NOTE: You can ignore the message CHANGE CAM NOW IF NECESSARY.
   (3) Do the Interface and Power-Up test of the CIDS.
(Ref. AMM TASK 23-73-00-740-005)
Subtask 23-73-21-740-050-B ** ON A/C NOT FOR ALL
C. OBRM - Software Loading, Configuration Test, Interface and Power-Up Test
   (1) On the Flight Attendant Panel (FAP), push the SW Load key.
  • The indicator light in the SW Load key comes on.
  • The SOFTWARE LOADING page shows.
  • The message box WAIT UNTIL ALL CIDS COMPONENTS HAVE SENT THEIR CONFIGURATION shows.
  • Wait approx. 2 minutes, then the message box goes off.
   (2) If on the SOFTWARE LOADING page one or more components show with an amber background:
NOTE: If no component with an amber background shows on the SOFTWARE LOADING page, no OBRM software download is required.
NOTE: You can ignore the message CHANGE CAM NOW IF NECESSARY.
   (3) Do the Interface and Power-Up test of the CIDS.
(Ref. AMM TASK 23-73-00-740-005)
   (4) Do the BITE test of the Smoke Detection Function (SDF).
(Ref. AMM TASK 26-10-00-740-801)
Subtask 23-73-21-740-050-C ** ON A/C NOT FOR ALL
C. OBRM - Software Loading, Configuration Test, Interface and Power-Up Test
   (1) On the Flight Attendant Panel (FAP), push the SW Load key.
  • The indicator light in the SW Load key comes on.
  • The SOFTWARE LOADING page shows.
  • The message box WAIT UNTIL ALL CIDS COMPONENTS HAVE SENT THEIR CONFIGURATION shows.
  • Wait approx. 2 minutes, then the message box goes off.
   (2) If on the SOFTWARE LOADING page one or more components show with an amber background:
NOTE: If no component with an amber background shows on the SOFTWARE LOADING page, no OBRM software download is required.
NOTE: You can ignore the message CHANGE CAM NOW IF NECESSARY.
   (3) Load the SMOKE LAYOUT into SDF1 and SDF2.
(Ref. AMM TASK 26-10-00-710-801)
   (4) Do the Interface and Power-Up test of the CIDS.
(Ref. AMM TASK 23-73-00-740-005)
   (5) Do the BITE test of the Smoke Detection Function (SDF).
(Ref. AMM TASK 26-10-00-740-801)
5. Close-up
Subtask 23-73-21-862-050-A ** ON A/C NOT FOR ALL
A. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)
[Rev.10 from 2021] 2026.04.01 04:42:38 UTC
"Aviabrain" 2025