Removal of the Cabin Intercommunication Data System (CIDS) Director

TASK 23-73-34-000-001-C
Removal of the Cabin Intercommunication Data System (CIDS) Director

ZONE: 127
ZONE: 128
FIN: 101RH ** ON A/C NOT FOR ALL
FIN: 102RH ** 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	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-73-00-861-001-A	Energize the Cabin Intercommunication Data System (CIDS)
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 31-32-00-860-003-A	Procedure to Get Access to the SYSTEM REPORT/TEST/COM Page
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
CIDS Director

3. Job Set-up
Subtask 23-73-34-861-054-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 23-73-34-970-052-A ** ON A/C NOT FOR ALL

B. Printing of the Troubleshooting Data
(1) Make sure that the Cabin Intercommunication Data System (CIDS) is energized
(Ref. AMM TASK 23-73-00-861-001).
(2) If available, print the TROUBLE SHOOTING DATA page as follows:

Get access to the SYSTEM REPORT/TEST COM page (Ref. AMM TASK 31-32-00-860-003).
On this page, push the line key adjacent to the CIDS1(2) indication.
On the CIDS1(2) page, push the line key adjacent to the TROUBLE SHOOTING DATA indication to get access to the TROUBLE SHOOTING DATA page.
Print the TROUBLE SHOOTING DATA page.

Subtask 23-73-34-865-065-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
FOR FIN: 101RH (DIRCIDS, 1)
49VU	COM/CIDS/DIR ESS/1	150RH	G01
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
49VU	COM/CIDS/DIR ESS/1	150RH	G01
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05

Subtask 23-73-34-010-054-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at zone 128.
(2) Open access door 824 (Ref. AMM TASK 52-41-00-010-002).

4. Procedure
Subtask 23-73-34-020-052-A ** ON A/C NOT FOR ALL

A. Removal of the CIDS Director

NOTE: The removal procedure of CIDS director 1 is different from the removal procedure of CIDS director 2.

(1) Removal of CIDS director 1:
(a) Loosen the nuts (3).
(b) Lower the nuts (3).
(c) Pull the CIDS director (5) on its rack (2) to disconnect the electrical connectors (1).
(d) Remove the CIDS director (5) from its rack (2).
(e) Put the CAP - BLANKING on each disconnected electrical connector (1).
(f) If the aircraft will operate with only one CIDS director:
1 On the rack of removed CIDS director 1, make marks on the ventilation holes with no plugs to record their locations.

NOTE: This is important for the subsequent installation procedure.

a If necessary, install the plugs on the ventilation holes.
b If necessary, remove the plugs from ventilation holes 1 and 9.
(2) Removal of CIDS director 2:

NOTE: The removal procedure of CIDS director 1 is different from the removal procedure of CIDS director 2.

(a) Loosen the nuts (3) of CIDS directors 1 and 2.
(b) Lower the nuts (3) of CIDS directors 1 and 2.
(c) Pull CIDS directors 1 and 2 (5) on their racks (2) to disconnect the electrical connectors (1).
(d) Remove CIDS directors 1 and 2 (5) from their racks (2).
(e) Put the CAP - BLANKING on each disconnected electrical connector (1) of CIDS director 1 and 2.

[Rev.10 from 2021] 2026.03.31 23:18:15 UTC