Removal of the Annunciator-Light Test and Interface-Board

TASK 33-14-33-000-001-A
Removal of the Annunciator-Light Test and Interface-Board

CAUTION: DURING REMOVAL AND INSTALLATION OF THE PRINTED CIRCUIT BOARDS (PCB'S) THAT HAVE THE ESD SYMBOL, OBEY THESE PRECAUTIONS:

USE A CONDUCTIVE WRIST-STRAP THAT IS ELECTRICALLY GROUNDED (CONNECTED TO A BONDING-POINT NEAR THE WORK AREA) BEFORE AND DURING HANDLING OF THE PCB'S. IF NO WRIST-STRAP IS AVAILABLE, MAKE SURE THAT YOU ARE ELECTRICALLY CONNECTED TO THE AIRCRAFT GROUND BEFORE YOU HANDLE THE PCB'S.
DO NOT TOUCH THE ELECTRICAL CONNECTOR PINS.
PREVENT CONTACT WITH THE TOP FACE OR BOTTOM FACE OF THE PCB WHERE THE ELECTRONIC DEVICES ARE LOCATED.
MAKE SURE THAT THE REPLACEMENT PCB'S ARE IN THEIR PROTECTIVE PACKAGING AND/OR NON-CONDUCTIVE BOX WHEN YOU RECEIVE THEM ON THE AIRCRAFT.
MAKE SURE THAT YOU PUT THE DEFECTIVE (REMOVED) PCB'S IN PROTECTIVE WRAPS FOR TRANSPORT BACK TO THE HANGAR.

IF YOU DO NOT OBEY THESE INSTRUCTIONS, YOU CAN CAUSE ELECTROSTATIC DISCHARGE (ESD) DAMAGE TO THE PCB'S.

ZONE: 126
FIN: 1LP
FIN: 10LP
FIN: 11LP
FIN: 12LP
FIN: 18LP
FIN: 19LP
FIN: 2LP
FIN: 20LP
FIN: 3LP
FIN: 4LP
FIN: 5LP
FIN: 6LP
FIN: 7LP
FIN: 8LP
FIN: 9LP

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
126	LATERAL AVIONIC COMPARTMENT
822

C. Referenced Information

REFERENCE	DESIGNATION
Annunciator-Light Test and Interface-Board

3. Job Set-up
Subtask 33-14-33-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/TST/BOARD/SPLY	30LP	X06

Subtask 33-14-33-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position under the access door 822.
(2) Open the access door 822.

4. Procedure
Subtask 33-14-33-020-050-A

A. Removal of the board
(1) Fully loosen the two screws (2) that attach the defective annunciator-light test and interface-board (1) to its support (3).
(2) Remove the annunciator light test board (1).

[Rev.10 from 2021] 2026.04.01 00:53:03 UTC