Installation of the SELCAL Code Panel

TASK 23-51-13-400-001-A
Installation of the SELCAL Code Panel

ZONE: 128
FIN: 3RN

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 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-51-00-710-002-A	Operational Test of the SELCAL System
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access

3. Job Set-up
Subtask 23-51-13-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the access door 824 in zone 128.
(2) Make sure that the access door 824 is open.

4. Procedure
Subtask 23-51-13-420-050-A

A. Installation of the SELCAL Code Panel
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking caps from the connector (4) and the receptacle (1).
(4) Make sure that the connector (4) and the receptacle (1) are in the correct condition.
(5) Connect the connector (4) to the receptacle (1).
(6) Put the SELCAL code panel (3) in its housing.
(7) Tighten the QAD fasteners (2) by one quarter turn.
(8) Make sure that the code on the SELCAL code panel is the same as that written at the panel removal.

Subtask 23-51-13-740-050-B

B. Do the Operational Test of the SELCAL system (Ref. AMM TASK 23-51-00-710-002).

5. Close-up
Subtask 23-51-13-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:12:16 UTC