Installation of the Cabin Wireless LAN-Unit (CWLU)

TASK 46-41-35-400-801-A
Installation of the Cabin Wireless LAN-Unit (CWLU)

ZONE: 200
FIN: 3010RF1 ** ON A/C NOT FOR ALL
FIN: 3010RF2 ** ON A/C NOT FOR ALL
FIN: 3010RF3 ** ON A/C NOT FOR ALL
FIN: 3010RF4 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

C. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance 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 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-41-400-001-A	Installation of the Ceiling Panels
TASK 46-41-00-00	CABIN INFORMATION NETWORK SYSTEM - DESCRIPTION AND OPERATION
Cabin Wireless LAN-Unit (CWLU)

3. Job Set-up
Subtask 46-41-35-860-051-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) For the location of this component refer to (Ref. AMM D/O 46-41-00-00).
(3) Make sure that the STEPLADDER 1.0 M (3.3 FT) is below the related ceiling panel.
(4) Make sure that the related ceiling panel(s) is (are) removed (Ref. AMM TASK 25-23-41-000-001).

Subtask 46-41-35-865-051-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WAP	27MH	D07
2000VU	CINS-HESU	21RF	E02

4. Procedure
Subtask 46-41-35-420-050-B ** ON A/C NOT FOR ALL

A. Installation of the Cabin Wireless LAN-Unit (CWLU)

Cabin Wireless LAN-Unit (CWLU) ** ON A/C NOT FOR ALL

(1) Do an inspection of the component interfaces and the adjacent area.
(2) Clean the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Prepare the bonding (Ref. AMM TASK 20-28-00-912-802).
(5) Carefully put the CWLU (3) in its installation position.
(6) Install the washers (1) and the screws (2).
(7) Tighten the screws (2).
(8) Do the electrical bonding of the ground bonding point (Ref. AMM TASK 20-28-00-912-802).

CAUTION: MAKE SURE THAT THE BONDING STRAP(S) IS(ARE) CONNECTED BEFORE YOU CONNECT THE ELECTRICAL CONNECTOR(S).

CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE COMPONENT DURING THE PROCEDURE. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO COMPONENT.

(9) Remove the blanking caps from all the electrical connector(s) and related receptacle(s). Refer to the identification marks made during the removal procedure.
(10) Make sure that all the electrical connections are clean and in the correct condition.

CAUTION: WHEN YOU CONNECT THE ELECTRICAL CONNECTORS, MAKE SURE THAT YOU CONNECT EACH PLUG TO THE CORRECT RECEPTACLE (USE THE IDENTIFICATION MARKS).

(11) Connect the electrical connectors (4) to their related receptacles of the CWLU (3). Refer to the identification marks made during the removal procedure.
(12) On the receptacle without the electrical connector, make sure that:
(a) The blanking cap is installed. If necessary, install the new CAP - BLANKING.

Subtask 46-41-35-865-052-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WAP	27MH	D07
2000VU	CINS-HESU	21RF	E02

5. Close-up
Subtask 46-41-35-410-050-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the related ceiling panel(s) (Ref. AMM TASK 25-23-41-400-001).
(3) Remove the STEPLADDER 1.0 M (3.3 FT).

Subtask 46-41-35-860-052-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:26:16 UTC