Removal of the Removable SIM Module (RSM) and the SIM Module I/O Cards (SMIO) of the WGL-DAR

TASK 31-36-00-000-803-A
Removal of the Removable SIM Module (RSM) and the SIM Module I/O Cards (SMIO) of the WGL-DAR

CAUTION: OBEY THESE PRECAUTIONS TO PREVENT ELECTROSTATIC DISCHARGE (ESD) DAMAGE TO THE COMPONENTS:

STAY ON A CONDUCTIVE SURFACE THAT IS ELECTRICALLY GROUNDED.
USE A CONDUCTIVE WRIST-STRAP THAT IS ELECTRICALLY GROUNDED. (CONNECTED TO A BONDING-POINT NEAR THE WORK AREA).
BEFORE YOU USE THE TOOLS, MOMENTARILY HOLD THEM AGAINST AN ELECTRICAL GROUND TO RELEASE STATIC ELECTRICITY.

CAUTION: BEFORE YOU REMOVE OR INSTALL THE REMOVABLE SIM MODULE, MAKE SURE THAT THE WGL DAR IS DE-ENERGIZED. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EQUIPMENT CAN OCCUR.

CAUTION: INSTALL THE SIM CARDS VERY CAREFULLY AND MAKE SURE THAT YOU DO NOT CAUSE DAMAGE TO THEIR METAL CONTACTS. THIS WILL HELP TO PREVENT DAMAGE TO OTHER COMPONENTS.

ZONE: 121
FIN: 2TV ** 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	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121	AVIONICS COMPARTMENT
824

C. 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 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 31-36-00-00-02	AIDS INTERCONNECTION (DMU, DAR) - DESCRIPTION AND OPERATION
Removable SIM Module (RSM) and the SIM Module I/O Cards (SMIO) of the WGL-DAR ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 31-36-00-861-085-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 31-36-00-010-092-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below access door 824.
(2) Open access door 824 (Ref. AMM TASK 52-41-00-010-002).
(3) For the location of the WGL-DAR, refer to paragraph Component Location (Ref. AMM D/O 31-36-00-00).

Subtask 31-36-00-865-165-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	RCDR/ACCLRM	9TU	K18
121VU	AIDS & RCDR/FDIMU	5TV	K15

4. Procedure
Subtask 31-36-00-020-060-A ** ON A/C NOT FOR ALL

A. Removal of the Removable SIM Module (RSM)

Removable SIM Module (RSM) and the SIM Module I/O Cards (SMIO) of the WGL-DAR ** ON A/C NOT FOR ALL

(1) Turn counter-clockwise the thumbscrew on the access door.
(2) Lower the access door to get access to the RSM (1). The RSM (1) is installed on the right side of the compartment and it has the "UP" mark on the handle.
(3) Move up the top clip and move down the bottom clip to release the module.
(4) Hold tightly the handle of the RSM (1). Pull the RSM (1) in your direction.
(5) Remove the screws (3) which hold the shield (4) in position.
(6) Inspect the SIM cards (2).
(7) If necessary, remove the SIM cards (2).

NOTE: If it is necessary to replace the SIM cards (2), it is recommended to record the correct position of the SIM cards (2) before removal.

[Rev.10 from 2021] 2026.04.01 00:35:50 UTC