Installation of the Handset Coiled Cord

TASK 23-73-44-400-002-A
Installation of the Handset Coiled Cord

CAUTION: OBEY THE ELECTROSTATIC-DISCHARGE SAFETY PRECAUTIONS WHEN YOU DO MAINTENANCE ON OR NEAR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. IF YOU DO NOT OBEY THESE PRECAUTIONS, YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.

CAUTION: BE CAREFUL NOT TO TOUCH THE CONNECTOR PINS BECAUSE ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO INTERNAL COMPONENTS.

CAUTION: DO NOT PUSH THE COMPONENT TO ENGAGE THE CONNECTORS. LIGHT PRESSURE ON THE LOWER CORNERS OF THE UNIT IS SUFFICIENT. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE CONNECTORS.

CAUTION: START THE CIDS ONLY WHEN THE AIR CIRCULATION SYSTEM OPERATES. IF YOU DO NOT OBEY THIS INSTRUCTION, THERE IS A RISK OF DAMAGE TO THE CIDS.

NOTE: The procedure for the cockpit handset coiled cord is the same as the procedure for the cabin handset coiled cord.

NOTE: The handset cradles have a handset cradle cover and a handset cradle mounting.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 0.65 and 0.53 m.N (5.75 and 4.69 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
No specific	CABLE TIES

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-73-00-740-005-B	Interface and Power-Up Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
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 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 26-10-00-740-801-A	BITE Test of the Smoke Detection Function - System Test
TSM 23730003
Handset Coiled Cord (connects the Handset to the Cradle)

3. Job Set-up
Subtask 23-73-44-861-053-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized
(Ref. AMM TASK 24-41-00-861-002).
(2) For the location of the equipment refer to para. component location TSM 23730003.

Subtask 23-73-44-865-054-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 130RH (HANDSET)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DIR ESS/1	150RH	G01
** ON A/C NOT FOR ALL
49VU	COM DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM NAV/CIDS/DIR2 ESS	157RH	G02
49VU	COM NAV/CIDS/DIR1 ESS	150RH	G01
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M07
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR2 NORM	156RH	M06
121VU	COM NAV/CIDS/DIR1 NORM	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DIR 2/BAT	146RH	P14
121VU	COM/CIDS/DIR 1/BAT	147RH	P13
** ON A/C NOT FOR ALL
FOR FIN: 330RH14 (HANDSET) FOR FIN: 330RH13 (HANDSET) FOR FIN: 330RH11 (HANDSET) FOR FIN: 330RH9 (HANDSET) FOR FIN: 330RH8 (HANDSET) FOR FIN: 330RH7 (HANDSET) FOR FIN: 330RH3FOR FIN: 330RH1 (HANDSET)
49VU	COM/CIDS/DEU B/ESS	153RH	G03
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU B ESS/R	420RH	G05
49VU	COM/CIDS/DEU B ESS/L	419RH	G04
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M08
** ON A/C NOT FOR ALL
121VU	COM / CIDS / DEU B / NORM FWD	193RH	M09
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B NORM/R	620RH	M08
121VU	COM NAV/CIDS/DEU B NORM/L	619RH	M07
121VU	COM/CIDS/DEU B BAT/R	720RH	Q11
121VU	COM/CIDS/DEU B BAT/L	719RH	Q10
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DEU B/BAT	143RH	N12
** ON A/C NOT FOR ALL
2001VU	CIDS-DEU B-NORM-AFT	194RH	C08

4. Procedure
Subtask 23-73-44-420-053-A ** ON A/C NOT FOR ALL

A. Install the Handset Coiled Cord

Handset Coiled Cord (connects the Handset to the Cradle) ** ON A/C NOT FOR ALL

(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Remove the CAP-BLANKING from each electrical connector and receptacle.
(3) Make sure that all the electrical connections are clean and in the correct condition.
(4) Install the handset coiled cord (2) on the handset (1):
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Connect the connector (7) to the socket (5).
(c) Put the strain relief (8) into the groove (6).
(d) Push the cable support (9) into the handset (1) and torque the screw (10) to between 0.65 and 0.53 m.N (5.75 and 4.69 lbf.in )

.
(5) Install the handset coiled cord (2) on the handset cradle mounting (16):
(a) Put the strain relief (11) into the groove (12).
(b) Carefully install the handset coiled cord (2) between the locking hooks (14).
(c) Remove the CAP-BLANKING from each electrical connector and receptacle.
(d) Connect the connector (15) to the socket (17) on the printed circuit board.
(e) Install two new CABLE TIES (13) and cut their ends.
(6) Install the handset cradle cover (18):

NOTE: The following steps are only necessary if the handset cradle mounting (16) is installed in the cabin.

(a) Install the handset cradle cover (18) with the washers (4) and the screws (3).
(b) Put the handset (1) into the handset cradle cover (18).

Subtask 23-73-44-865-056-A ** ON A/C NOT FOR ALL

B. Remove the safety clips and tags and close these circuit breakers in this sequence:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 330RH14 (HANDSET) FOR FIN: 330RH13 (HANDSET) FOR FIN: 330RH11 (HANDSET) FOR FIN: 330RH9 (HANDSET) FOR FIN: 330RH8 (HANDSET) FOR FIN: 330RH7 (HANDSET) FOR FIN: 330RH3FOR FIN: 330RH1 (HANDSET)
2001VU	CIDS-DEU B-NORM-AFT	194RH	C08
121VU	COM / CIDS / DEU B / NORM FWD	193RH	M09
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M08
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU B/ESS	153RH	G03
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DEU B/BAT	143RH	N12
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B NORM/L	619RH	M07
121VU	COM NAV/CIDS/DEU B NORM/R	620RH	M08
49VU	COM/CIDS/DEU B ESS/L	419RH	G04
49VU	COM/CIDS/DEU B ESS/R	420RH	G05
121VU	COM/CIDS/DEU B BAT/L	719RH	Q10
121VU	COM/CIDS/DEU B BAT/R	720RH	Q11
FOR FIN: 130RH (HANDSET)
121VU	COM NAV/CIDS/DIR2 NORM	156RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M07
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR1 NORM	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
** ON A/C NOT FOR ALL
49VU	COM NAV/CIDS/DIR2 ESS	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM NAV/CIDS/DIR1 ESS	150RH	G01
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DIR ESS/1	150RH	G01
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DIR 1/BAT	147RH	P13
121VU	COM/CIDS/DIR 2/BAT	146RH	P14

Subtask 23-73-44-869-051-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Make sure that the Cabin Intercommunication Data System (CIDS) is energized
(Ref. AMM TASK 23-73-00-861-001).
(2) Do the Interface and Power-up test of the CIDS (Ref. AMM TASK 23-73-00-740-005).

Subtask 23-73-44-740-051-A ** ON A/C NOT FOR ALL

D. Do the BITE test of the smoke detection function - system test
(Ref. AMM TASK 26-10-00-740-801).

5. Close-up
Subtask 23-73-44-862-051-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.03.31 23:18:41 UTC