Removal of the Control Unit

TASK 25-27-34-000-002-A
Removal of the Control Unit

FIN: 60DS ** ON A/C NOT FOR ALL
FIN: 66DS ** 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
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	STEPLADDER 2.0 M (6.6 FT)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
Control Unit 60DS, 66DS

3. Job Set-up
Subtask 25-27-34-861-051-A ** ON A/C NOT FOR ALL

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 25-27-34-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Get access to the avionics compartment:
(a) Put a STEPLADDER 2.0 M (6.6 FT) in position.
(b) Open the avionics compartment door 811 (Ref. AMM TASK 52-41-00-010-002).

Subtask 25-27-34-865-056-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
2000VU	DOOR AREA HTG PANELS-CTL	54DS	A07
2000VU	DR AREA HTG PNLS-DR1-FPH-RH	52DS	A06
2000VU	DR AREA HTG PNLS-DR1-FPH-LH	51DS	A05
** ON A/C NOT FOR ALL
2000VU	DR AREA HTG PNLS-DOOR1-FPH-RH	52DS	F06
2000VU	DR AREA HTG PNLS-DOOR1-FPH LH	51DS	F05

4. Procedure
Subtask 25-27-34-020-052-A ** ON A/C NOT FOR ALL

A. Removal of the Control Unit 60DS and 66DS.

Control Unit 60DS, 66DS ** ON A/C NOT FOR ALL

NOTE: The procedure for the control units are the same.

(1) Release the spring latches (3) , loosen the screws (4) and disconnect the electrical connectors (1) and (2).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Push the locking catch (5) and carefully move the control unit (6) out of the adapter assembly (7).

[Rev.10 from 2021] 2026.03.31 23:32:58 UTC