DOC AIRBUS | AMM A320FRemoval of the Printed Circuit Board
TASK 23-73-49-000-001-A
Removal of the Printed Circuit Board
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
A. Referenced Information
3. Job Set-up
Subtask 23-73-49-861-050-A ** ON A/C NOT FOR ALL
Subtask 23-73-49-020-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:12:37 UTC
Removal of the Printed Circuit Board
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
A. 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) |
Printed Circuit Board 2038VUASubtask 23-73-49-861-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 23-73-49-865-051-A ** ON A/C NOT FOR ALL (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
B. Open, safety and tag these circuit breakers in this sequence:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CIDS/DEU A ESS/LINE 1 | 154RH | G04 |
| 49VU | COM/CIDS/DEU A ESS/LINE 2 | 155RH | G05 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 163RH | M10 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 163RH | M09 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R FWD | 164RH | M11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R FWD | 164RH | M10 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L MID | 165RH | M12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L MID | 165RH | M11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R MID | 166RH | M13 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R MID | 166RH | M12 |
| 121VU | COM NAV/CIDS/DEU A NORM/L AFT | 167RH | M13 |
| 121VU | COM NAV/CIDS/DEU A NORM/R AFT | 168RH | M14 |
| ** ON A/C NOT FOR ALL | |||
| 2000VU | PASSENGER READING LIGHT | 1LW | G01 |
| 2000VU | PASSENGER READING LIGHT | 2LW | G02 |
| 2000VU | PASSENGER READING LIGHT | 3LW | G03 |
| 2000VU | PASSENGER READING LIGHT | 4LW | G04 |
| 2000VU | PASSENGER READING LIGHT | 5LW | G05 |
| 2000VU | PASSENGER READING LIGHT | 6LW | G06 |
Subtask 23-73-49-020-050-A ** ON A/C NOT FOR ALL
A. Removal of the Printed Circuit Board (PCB) with Bulbs or LEDs and the Passenger Call Switches
(1) Remove the section hose (7) from one side of the mounting rail (6).
(2) Pull and lower the related Passenger Service Information Unit (PSIU) (3).
(3) Disconnect the electrical connector (2) from the PCB (1).
(4) Put blanking caps on the disconnected electrical connectors.
(5) Put a small screwdriver under one lock-angle (5) of the retainer (4).
(6) Turn the screwdriver to lift the lock-angle (5) until it is released and stays up.
(7) Do step (5) and (6) again on the opposite side of the retainer (4).
(8) On the side of the retainer (4) that you have access to, use the screwdriver to push the lock-angle (5) in until the retainer is released from its retaining groove.
(9) Lift the retainer (4) up and to the side at the same time to release the retainer from the retaining groove on the opposite side.
(10) Remove the retainer (4).
(11) Do steps (3) thru (10) again for the remaining retainers (4).
(12) Remove the PCB (1) with the Passenger Call Switches on it from the PSIU (3).
(1) Remove the section hose (7) from one side of the mounting rail (6).
(2) Pull and lower the related Passenger Service Information Unit (PSIU) (3).
(3) Disconnect the electrical connector (2) from the PCB (1).
(4) Put blanking caps on the disconnected electrical connectors.
(5) Put a small screwdriver under one lock-angle (5) of the retainer (4).
(6) Turn the screwdriver to lift the lock-angle (5) until it is released and stays up.
(7) Do step (5) and (6) again on the opposite side of the retainer (4).
(8) On the side of the retainer (4) that you have access to, use the screwdriver to push the lock-angle (5) in until the retainer is released from its retaining groove.
(9) Lift the retainer (4) up and to the side at the same time to release the retainer from the retaining groove on the opposite side.
(10) Remove the retainer (4).
(11) Do steps (3) thru (10) again for the remaining retainers (4).
(12) Remove the PCB (1) with the Passenger Call Switches on it from the PSIU (3).