Removal of the Head-End Server Unit CF-Card

TASK 46-41-39-000-801-A
Removal of the Head-End Server Unit CF-Card

ZONE: 120
FIN: 1610RF ** 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 2M (6 FT)
No specific	1	BAG - ANTISTATIC
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	SCREWDRIVER - SMALL

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
120	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 46-41-00-00	CABIN INFORMATION NETWORK SYSTEM - DESCRIPTION AND OPERATION
Head-End Server Unit CF-Card

3. Job Set-up
Subtask 46-41-39-861-050-B ** 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 46-41-39-865-050-A ** ON A/C NOT FOR ALL

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

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

Subtask 46-41-39-010-050-B ** ON A/C NOT FOR ALL

C. Get access to the avionics compartment
(1) For the location of this component, refer to Para. Component Location (Ref. AMM D/O 46-41-00-00).
(2) Put an ACCESS PLATFORM 2M (6 FT) in position at access door 824.
(3) Open access door 824 (Ref. AMM TASK 52-41-00-010-002).

4. Procedure
Subtask 46-41-39-020-050-C ** ON A/C NOT FOR ALL

A. Removal of the Head-End Server Unit (HESU) CF-Card

Head-End Server Unit CF-Card ** ON A/C NOT FOR ALL

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.

(1) Make sure that the indicators on the HESU are off.
(2) Loosen the screw (4) and open the flap (2).
(3) Use a SCREWDRIVER - SMALL to push the button (5) and make the CF-card (3) release from the HESU (1).
(4) Carefully pull the CF-card (3) and remove it from the HESU (1).
(5) Put the CF-card (3) into a BAG - ANTISTATIC.

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