Installation of the Connection Box

TASK 23-73-42-400-001-A
Installation of the Connection Box

FIN: 208RH1 ** ON A/C NOT FOR ALL
FIN: 208RH10 ** ON A/C NOT FOR ALL
FIN: 208RH11 ** ON A/C NOT FOR ALL
FIN: 208RH12 ** ON A/C NOT FOR ALL
FIN: 208RH13 ** ON A/C NOT FOR ALL
FIN: 208RH14 ** ON A/C NOT FOR ALL
FIN: 208RH2 ** ON A/C NOT FOR ALL
FIN: 208RH3 ** ON A/C NOT FOR ALL
FIN: 208RH4 ** ON A/C NOT FOR ALL
FIN: 208RH5 ** ON A/C NOT FOR ALL
FIN: 208RH6 ** ON A/C NOT FOR ALL
FIN: 208RH7 ** ON A/C NOT FOR ALL
FIN: 208RH8 ** ON A/C NOT FOR ALL
FIN: 208RH9 ** ON A/C NOT FOR ALL
FIN: 308RH1 ** ON A/C NOT FOR ALL
FIN: 308RH2 ** ON A/C NOT FOR ALL
FIN: 308RH3 ** ON A/C NOT FOR ALL
FIN: 308RH4 ** ON A/C NOT FOR ALL
FIN: 308RH5 ** ON A/C NOT FOR ALL
FIN: 308RH6 ** 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	STEPLADDER 0.5 M (1.6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [208RH1] (DEU CONNECTION BOX)
FOR [208RH2] (DEU CONNECTION BOX)
231JW, 232JW
FOR [208RH10] (DEU CONNECTION BOX)
FOR [208RH9] (DEU CONNECTION BOX)
241WW, 242WW
FOR [208RH11] (DEU CONNECTION BOX)
FOR [208RH12] (DEU CONNECTION BOX)
251FW, 252FW
251MC
FOR [208RH13] (DEU CONNECTION BOX)
FOR [208RH14] (DEU CONNECTION BOX)
251TW, 252TW
251QW, 252QW
FOR [208RH3] (DEU CONNECTION BOX)
FOR [208RH4] (DEU CONNECTION BOX)
231WW, 232WW
FOR [208RH5] (DEU CONNECTION BOX)
FOR [208RH6] (DEU CONNECTION BOX)
231LC
FOR [208RH7] (DEU CONNECTION BOX)
FOR [208RH8] (DEU CONNECTION BOX)
241QW, 242QW
231XX, 232XX
FOR [308RH1] (DEU CONNECTION BOX)
FOR [308RH2] (DEU CONNECTION BOX)
221BC, 222BC
FOR [308RH3] (DEU CONNECTION BOX)
FOR [308RH4] (DEU CONNECTION BOX)
231JC
FOR [308RH5] (DEU CONNECTION BOX)
FOR [308RH6] (DEU CONNECTION BOX)
241WW, 242WW
251KC

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 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 26-10-00-740-801-A	BITE Test of the Smoke Detection Function - System Test
ASM 237305
ASM 237321
Connection Box DEU Type A/B - Component Location ** ON A/C NOT FOR ALL
Connection Box DEU Type A/B - Component Location ** ON A/C NOT FOR ALL
Connection Box DEU Type A/B
FOR [208RH1] (DEU CONNECTION BOX)
FOR [208RH2] (DEU CONNECTION BOX)
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
FOR [208RH10] (DEU CONNECTION BOX)
FOR [208RH9] (DEU CONNECTION BOX)
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
FOR [208RH11] (DEU CONNECTION BOX)
FOR [208RH12] (DEU CONNECTION BOX)
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-41-400-001-A	Installation of the Ceiling Panels
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
FOR [208RH13] (DEU CONNECTION BOX)
FOR [208RH14] (DEU CONNECTION BOX)
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
FOR [208RH3] (DEU CONNECTION BOX)
FOR [208RH4] (DEU CONNECTION BOX)
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
FOR [208RH5] (DEU CONNECTION BOX)
FOR [208RH6] (DEU CONNECTION BOX)
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-41-400-001-A	Installation of the Ceiling Panels
FOR [208RH7] (DEU CONNECTION BOX)
FOR [208RH8] (DEU CONNECTION BOX)
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
FOR [308RH1] (DEU CONNECTION BOX)
FOR [308RH2] (DEU CONNECTION BOX)
TASK 25-23-42-000-001-A	Removal of the Ceiling Panels - Forward Utility Area
TASK 25-23-42-400-001-A	Installation of the Ceiling Panels - Forward Utility Area
FOR [308RH3] (DEU CONNECTION BOX)
FOR [308RH4] (DEU CONNECTION BOX)
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-41-400-001-A	Installation of the Ceiling Panels
FOR [308RH5] (DEU CONNECTION BOX)
FOR [308RH6] (DEU CONNECTION BOX)
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-41-400-001-A	Installation of the Ceiling Panels
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel

3. Job Set-up
Subtask 23-73-42-860-050-C ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)
(1) Make sure that the STEPLADDER 0.5 M (1.6 FT) is below the related access panel.
(2) Make sure that the forward utility area - ceiling panel is removed:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(3) Make sure that the related cove light and ceiling panels are removed:
(a) FOR [208RH1] (DEU CONNECTION BOX), [208RH2] (DEU CONNECTION BOX)
Remove 231JW and 232JW (Ref. AMM TASK 25-23-48-000-001).
(b) FOR [208RH3] (DEU CONNECTION BOX), [208RH4] (DEU CONNECTION BOX)
Remove 231WW and 232WW (Ref. AMM TASK 25-23-48-000-001).
(c) FOR [308RH3] (DEU CONNECTION BOX), [308RH4] (DEU CONNECTION BOX)
Remove 231JC (Ref. AMM TASK 25-23-41-000-001).
(d) FOR [208RH5] (DEU CONNECTION BOX), [208RH6] (DEU CONNECTION BOX)
Remove 231LC (Ref. AMM TASK 25-23-41-000-001).
(e) FOR [208RH7] (DEU CONNECTION BOX), [208RH8] (DEU CONNECTION BOX)
Remove 231XX and 232XX (Ref. AMM TASK 25-23-48-000-001).
(f) FOR [208RH9] (DEU CONNECTION BOX), [208RH10] (DEU CONNECTION BOX)
Remove 241WW and 242WW (Ref. AMM TASK 25-23-48-000-001).
(g) FOR [308RH5] (DEU CONNECTION BOX), [308RH6] (DEU CONNECTION BOX)
Remove 251KC (Ref. AMM TASK 25-23-41-000-001).
(h) FOR [208RH11] (DEU CONNECTION BOX), [208RH12] (DEU CONNECTION BOX)
Remove 251MC (Ref. AMM TASK 25-23-41-000-001).
(i) FOR [208RH13] (DEU CONNECTION BOX), [208RH14] (DEU CONNECTION BOX)
Remove 251QW and 252QW (Ref. AMM TASK 25-23-48-000-001).

Subtask 23-73-42-860-050-D ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-42-00-861-001)
(1) Make sure that the STEPLADDER 0.5 M (1.6 FT) is below the related access panel.
(2) Make sure that the forward utility area - ceiling panel is removed:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(3) Make sure that the related cove light panels are removed:
(a) FOR [208RH1] (DEU CONNECTION BOX), [208RH2] (DEU CONNECTION BOX)
Remove 231JW and 232JW (Ref. AMM TASK 25-23-48-000-001).
(b) FOR [208RH3] (DEU CONNECTION BOX), [208RH4] (DEU CONNECTION BOX)
Remove 231WW and 232WW (Ref. AMM TASK 25-23-48-000-001).
(c) FOR [208RH7] (DEU CONNECTION BOX), [208RH8] (DEU CONNECTION BOX)
Remove 241QW and 242QW (Ref. AMM TASK 25-23-48-000-001).
(d) FOR [308RH5] (DEU CONNECTION BOX), [308RH6] (DEU CONNECTION BOX)
Remove 241WW and 242WW (Ref. AMM TASK 25-23-48-000-001).
(e) FOR [208RH11] (DEU CONNECTION BOX), [208RH12] (DEU CONNECTION BOX)
Remove 251FW and 252FW (Ref. AMM TASK 25-23-48-000-001).
(f) FOR [208RH13] (DEU CONNECTION BOX), [208RH14] (DEU CONNECTION BOX)
Remove 251TW and 252TW (Ref. AMM TASK 25-23-48-000-001).

Subtask 23-73-42-860-050-E ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-42-00-861-001)
(1) Make sure that the EMER EXIT LT switch 4WL on the overhead panel 25VU is in the OFF position.
(2) Make sure that the STEPLADDER 0.5 M (1.6 FT) is below the related access panel.
(3) Make sure that the forward utility area - ceiling panel is removed:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(4) Make sure that the related cove light panels are removed:
(a) FOR [208RH1] (DEU CONNECTION BOX), [208RH2] (DEU CONNECTION BOX)
Remove 231JW and 232JW (Ref. AMM TASK 25-23-48-000-001).
(b) FOR [208RH3] (DEU CONNECTION BOX), [208RH4] (DEU CONNECTION BOX)
Remove 231WW and 232WW (Ref. AMM TASK 25-23-48-000-001).
(c) FOR [208RH7] (DEU CONNECTION BOX), [208RH8] (DEU CONNECTION BOX)
Remove 241QW and 242QW (Ref. AMM TASK 25-23-48-000-001).
(d) FOR [308RH5] (DEU CONNECTION BOX), [308RH6] (DEU CONNECTION BOX)
Remove 241WW and 242WW (Ref. AMM TASK 25-23-48-000-001).
(e) FOR [208RH11] (DEU CONNECTION BOX), [208RH12] (DEU CONNECTION BOX)
Remove 251FW and 252FW (Ref. AMM TASK 25-23-48-000-001).
(f) FOR [208RH13] (DEU CONNECTION BOX), [208RH14] (DEU CONNECTION BOX)
Remove 251TW and 252TW (Ref. AMM TASK 25-23-48-000-001).

Subtask 23-73-42-860-050-H ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)
(1) Make sure that the EMER EXIT LT switch 4WL on the overhead panel 25VU is in the OFF position.
(2) Make sure that the STEPLADDER 0.5 M (1.6 FT) is below the related access panel.
(3) Make sure that the forward utility area - ceiling panel is removed:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(4) Make sure that the related cove light and ceiling panels are removed:
(a) FOR [208RH1] (DEU CONNECTION BOX), [208RH2] (DEU CONNECTION BOX)
Remove 231JW and 232JW (Ref. AMM TASK 25-23-48-000-001).
(b) FOR [208RH3] (DEU CONNECTION BOX), [208RH4] (DEU CONNECTION BOX)
Remove 231WW and 232WW (Ref. AMM TASK 25-23-48-000-001).
(c) FOR [308RH3] (DEU CONNECTION BOX), [308RH4] (DEU CONNECTION BOX)
remove 231JC (Ref. AMM TASK 25-23-41-000-001).
(d) FOR [208RH5] (DEU CONNECTION BOX), [208RH6] (DEU CONNECTION BOX)
Remove 231LC (Ref. AMM TASK 25-23-41-000-001).
(e) FOR [208RH7] (DEU CONNECTION BOX), [208RH8] (DEU CONNECTION BOX)
Remove 231XX and 232XX (Ref. AMM TASK 25-23-48-000-001).
(f) FOR [208RH9] (DEU CONNECTION BOX), [208RH10] (DEU CONNECTION BOX)
Remove 241WW and 242WW (Ref. AMM TASK 25-23-48-000-001).
(g) FOR [308RH5] (DEU CONNECTION BOX), [308RH6] (DEU CONNECTION BOX)
Remove 251KC (Ref. AMM TASK 25-23-41-000-001).
(h) FOR [208RH11] (DEU CONNECTION BOX), [208RH12] (DEU CONNECTION BOX)
Remove 251MC (Ref. AMM TASK 25-23-41-000-001).
(i) FOR [208RH13] (DEU CONNECTION BOX), [208RH14] (DEU CONNECTION BOX)
Remove 251QW and 252QW (Ref. AMM TASK 25-23-48-000-001).

Subtask 23-73-42-865-051-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
49VU	COM/CIDS/DEU B/ESS	153RH	G03
49VU	COM/CIDS/DEU A ESS/AFT R	172RH	HA12
49VU	COM/CIDS/DEU A ESS/AFT L	179RH	HA11
49VU	COM/CIDS/DEU A ESS/FWD R	158RH	HA10
49VU	COM/CIDS/DEU A ESS/FWD L	159RH	HA09
** ON A/C NOT FOR ALL
49VU	COM / CIDS / DEU A ESS / MID R	196RH	G05
49VU	COM / CIDS / DEU A ESS / MID L	195RH	G04
** 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 A NORM/R AFT	168RH	M12
121VU	COM NAV/CIDS/DEU A NORM/L AFT	167RH	M11
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M10
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M09
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M08
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M11
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M10
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 A BAT/FWD R	258RH	N14
121VU	COM/CIDS/DEU A BAT/L FWD	259RH	N13
121VU	COM/CIDS/DEU B/BAT	143RH	N12
121VU	COM/CIDS/DEU A BAT/AFT R	272RH	Q11
121VU	COM/CIDS/DEU A BAT/AFT L	279RH	Q10
** ON A/C NOT FOR ALL
121VU	DEU A BAT MID R	296RH	M13
121VU	DEU A BAT MID L	295RH	M12
** ON A/C NOT FOR ALL
2001VU	CIDS-DEU B-NORM-AFT	194RH	C08
2001VU	CIDS-DEU A NORM-AFT-RH	174RH	C07
2001VU	CIDS-DEU A NORM-AFT-LH	173RH	C06
2001VU	CIDS-DEU A NORM-MID-RH	198RH	C05
2001VU	CIDS-DEU A NORM-MID-LH	197RH	C04

4. Procedure
Subtask 23-73-42-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Connection Box

Connection Box DEU Type A/B - Component Location ** ON A/C NOT FOR ALL

Connection Box DEU Type A/B ** ON A/C NOT FOR ALL

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Connect the connection box (3) to the decoder/encoder unit (1) and tighten the nylatches (4).
(4) Remove the CAP-BLANKING from each electrical connector and receptacle.
(5) Make sure that all the electrical connections are clean and in the correct condition.
(6) Make sure that the coding switches are in the positions recorded during the removal procedure. For the correct position of the DEU coding switches, please refer to ASM 237305 ASM 237321.

NOTE: It is mandatory to set the position of the coding switches correctly. An incorrect position of the coding switches causes incorrect CIDS operation. Because of this, there can be fault messages related to the CIDS and/or the related DEU. When there are no fault messages you cannot be sure that all coding switches are in the correct position.

(7) Connect the electrical connector (2) to the connection box (3).
(8) Safety the electrical connector (2)

CAUTION: MAKE SURE THAT THE SPRING LATCHES CORRECTLY HOLD THE CONNECTOR IN THE FULLY ENGAGED POSITION. THE SPRING LATCHES PREVENT UNWANTED MOVEMENT OF THE CONNECTOR, AND THUS THE RISK OF ARCING, WHICH CAN CAUSE DAMAGE TO THE UNIT.

(a) Safety the connector (2) with the spring latches (5).

Subtask 23-73-42-865-052-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
2001VU	CIDS-DEU A NORM-MID-RH	198RH	C05
2001VU	CIDS-DEU A NORM-MID-LH	197RH	C04
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/L	619RH	M07
121VU	COM NAV/CIDS/DEU B NORM/R	620RH	M08
** ON A/C NOT FOR ALL
2001VU	CIDS-DEU A NORM-AFT-RH	174RH	C07
2001VU	CIDS-DEU A NORM-AFT-LH	173RH	C06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R AFT	168RH	M12
121VU	COM NAV/CIDS/DEU A NORM/L AFT	167RH	M11
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M11
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M10
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M10
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M09
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M08
** ON A/C NOT FOR ALL
49VU	COM / CIDS / DEU A ESS / MID R	196RH	G05
49VU	COM / CIDS / DEU A ESS / MID L	195RH	G04
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU A ESS/AFT L	179RH	HA11
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DEU A BAT/AFT R	272RH	Q11
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU A ESS/FWD L	159RH	HA09
49VU	COM/CIDS/DEU A ESS/FWD R	158RH	HA10
49VU	COM/CIDS/DEU B/ESS	153RH	G03
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU B ESS/L	419RH	G04
49VU	COM/CIDS/DEU B ESS/R	420RH	G05
** ON A/C NOT FOR ALL
121VU	DEU A BAT MID R	296RH	M13
121VU	DEU A BAT MID L	295RH	M12
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DEU A BAT/AFT L	279RH	Q10
121VU	COM/CIDS/DEU A BAT/AFT R	272RH	Q11
121VU	COM/CIDS/DEU A BAT/L FWD	259RH	N13
121VU	COM/CIDS/DEU A BAT/FWD R	258RH	N14
121VU	COM/CIDS/DEU B/BAT	143RH	N12
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DEU B BAT/L	719RH	Q10
121VU	COM/CIDS/DEU B BAT/R	720RH	Q11

Subtask 23-73-42-869-050-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 23-73-42-740-050-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 23-73-42-410-050-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the forward utility area - ceiling panel:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Install 221BC and 222BC (Ref. AMM TASK 25-23-42-400-001).
(3) Install the related cove light and ceiling panels:
(a) FOR [208RH1] (DEU CONNECTION BOX), [208RH2] (DEU CONNECTION BOX)
Install 231JW and 232JW (Ref. AMM TASK 25-23-48-400-001).
(b) FOR [208RH3] (DEU CONNECTION BOX), [208RH4] (DEU CONNECTION BOX)
Install 231WW and 232WW (Ref. AMM TASK 25-23-48-400-001).
(c) FOR [308RH3] (DEU CONNECTION BOX), [308RH4] (DEU CONNECTION BOX)
Install 231JC (Ref. AMM TASK 25-23-41-400-001).
(d) FOR [208RH5] (DEU CONNECTION BOX), [208RH6] (DEU CONNECTION BOX)
Install 231LC (Ref. AMM TASK 25-23-41-400-001).
(e) FOR [208RH7] (DEU CONNECTION BOX), [208RH8] (DEU CONNECTION BOX)
Install 231XX and 232XX (Ref. AMM TASK 25-23-48-400-001).
(f) FOR [208RH9] (DEU CONNECTION BOX), [208RH10] (DEU CONNECTION BOX)
Install 241WW and 242WW (Ref. AMM TASK 25-23-48-400-001).
(g) FOR [308RH5] (DEU CONNECTION BOX), [308RH6] (DEU CONNECTION BOX)
Install 251KC (Ref. AMM TASK 25-23-41-400-001).
(h) FOR [208RH11] (DEU CONNECTION BOX), [208RH12] (DEU CONNECTION BOX)
Install 251MC (Ref. AMM TASK 25-23-41-400-001).
(i) FOR [208RH13] (DEU CONNECTION BOX), [208RH14] (DEU CONNECTION BOX)
Install 251QW and 252QW (Ref. AMM TASK 25-23-48-400-001).
(4) Remove the STEPLADDER 0.5 M (1.6 FT).

Subtask 23-73-42-410-050-C ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the forward utility area - ceiling panel:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Install 221BC and 222BC (Ref. AMM TASK 25-23-42-400-001).
(3) Install the related cove light panels:
(a) FOR [208RH1] (DEU CONNECTION BOX), [208RH2] (DEU CONNECTION BOX)
Install 231JW and 232JW (Ref. AMM TASK 25-23-48-400-001).
(b) FOR [208RH3] (DEU CONNECTION BOX), [208RH4] (DEU CONNECTION BOX)
Install 231WW and 232WW (Ref. AMM TASK 25-23-48-400-001).
(c) FOR [208RH7] (DEU CONNECTION BOX), [208RH8] (DEU CONNECTION BOX)
Install 241QW and 242QW (Ref. AMM TASK 25-23-48-400-001).
(d) FOR [308RH5] (DEU CONNECTION BOX), [308RH6] (DEU CONNECTION BOX)
Install 241WW and 242WW (Ref. AMM TASK 25-23-48-400-001).
(e) FOR [208RH11] (DEU CONNECTION BOX), [208RH12] (DEU CONNECTION BOX)
Install 251FW and 252FW (Ref. AMM TASK 25-23-48-400-001).
(f) FOR [208RH13] (DEU CONNECTION BOX), [208RH14] (DEU CONNECTION BOX)
Install 251TW and 252TW (Ref. AMM TASK 25-23-48-400-001).
(4) Remove the STEPLADDER 0.5 M (1.6 FT).

Subtask 23-73-42-862-050-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)

[Rev.10 from 2021] 2026.04.02 06:12:34 UTC