Removal of the Connection Box
TASK 23-73-42-000-001-A
Removal of the Connection Box
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 23-73-42-861-050-A ** ON A/C NOT FOR ALL Subtask 23-73-42-860-051-A ** ON A/C NOT FOR ALL
Subtask 23-73-42-020-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.05 10:34:41 UTC
Removal 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 JobFIN: 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
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - BLANKING |
| No specific | 1 | STEPLADDER 0.5 M (1.6 FT) |
| 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 | |
| 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) |
| FOR [208RH1] (DEU CONNECTION BOX) | |
| FOR [208RH2] (DEU CONNECTION BOX) | |
| TASK 25-23-48-000-001-A | Removal 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 |
| FOR [208RH11] (DEU CONNECTION BOX) | |
| FOR [208RH12] (DEU CONNECTION BOX) | |
| TASK 25-23-41-000-001-A | Removal of the Ceiling Panels |
| TASK 25-23-48-000-001-A | Removal 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 |
| FOR [208RH3] (DEU CONNECTION BOX) | |
| FOR [208RH4] (DEU CONNECTION BOX) | |
| TASK 25-23-48-000-001-A | Removal 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 |
| FOR [208RH7] (DEU CONNECTION BOX) | |
| FOR [208RH8] (DEU CONNECTION BOX) | |
| TASK 25-23-48-000-001-A | Removal 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 |
| FOR [308RH3] (DEU CONNECTION BOX) | |
| FOR [308RH4] (DEU CONNECTION BOX) | |
| TASK 25-23-41-000-001-A | Removal 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 25-23-48-000-001-A | Removal of the Cove Light Panel |
Subtask 23-73-42-861-050-A ** ON A/C NOT FOR ALL Subtask 23-73-42-860-051-A ** ON A/C NOT FOR ALL
B. Make sure that the EMER EXIT LT switch 4WL on the overhead panel 25VU is in the OFF position.
Subtask 23-73-42-865-050-A ** ON A/C NOT FOR ALL C. Open, safety and tag these circuit breakers in this sequence:
Subtask 23-73-42-010-050-B ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 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 |
| ** 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 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 L | 295RH | M12 |
| 121VU | DEU A BAT MID R | 296RH | M13 |
| ** ON A/C NOT FOR ALL | |||
| 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 | |||
| 49VU | COM/CIDS/DEU A ESS/FWD R | 158RH | HA10 |
| 49VU | COM/CIDS/DEU A ESS/FWD L | 159RH | HA09 |
| 49VU | COM/CIDS/DEU A ESS/AFT R | 172RH | HA12 |
| 49VU | COM/CIDS/DEU A ESS/AFT L | 179RH | HA11 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM / CIDS / DEU A ESS / MID L | 195RH | G04 |
| 49VU | COM / CIDS / DEU A ESS / MID R | 196RH | G05 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU B/NORM | 162RH | M08 |
| ** 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 |
| ** 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 |
| 121VU | COM NAV/CIDS/DEU A NORM/L AFT | 167RH | M11 |
| 121VU | COM NAV/CIDS/DEU A NORM/R AFT | 168RH | M12 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | CIDS-DEU A NORM-AFT-LH | 173RH | C06 |
| 2001VU | CIDS-DEU A NORM-AFT-RH | 174RH | C07 |
| 121VU | COM / CIDS / DEU B / NORM FWD | 193RH | M09 |
| 2001VU | CIDS-DEU B-NORM-AFT | 194RH | C08 |
| 2001VU | CIDS-DEU A NORM-MID-LH | 197RH | C04 |
| 2001VU | CIDS-DEU A NORM-MID-RH | 198RH | C05 |
| ** 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 |
D. Get Access
(1) Put a STEPLADDER 0.5 M (1.6 FT) below the related access panel.
(2) Removal of the forward utility area - ceiling panel:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(3) Removal of the related cove light and ceiling panels:
(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 23-73-42-010-050-C ** ON A/C NOT FOR ALL (1) Put a STEPLADDER 0.5 M (1.6 FT) below the related access panel.
(2) Removal of the forward utility area - ceiling panel:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(3) Removal of the related cove light and ceiling panels:
(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).
D. Get Access
(1) Put a STEPLADDER 0.5 M (1.6 FT) below the related access panel.
(2) Removal of the forward utility area - ceiling panel:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(3) Removal of the related cove light panels:
(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).
4. Procedure(1) Put a STEPLADDER 0.5 M (1.6 FT) below the related access panel.
(2) Removal of the forward utility area - ceiling panel:
(a) FOR [308RH1] (DEU CONNECTION BOX), [308RH2] (DEU CONNECTION BOX)
Remove 221BC and 222BC (Ref. AMM TASK 25-23-42-000-001).
(3) Removal of the related cove light panels:
(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 23-73-42-020-050-A ** ON A/C NOT FOR ALL
A. Removal of the Connection Box
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
(1) Release the spring latches (5) and disconnect the electrical connector (2) from the connection box (3).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Pull the nylatches (4) and remove the connection box (3) from the DEU (1).
(4) Make sure that you do not change the position of the coding switches. Record the coding switch positions.
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 (2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Pull the nylatches (4) and remove the connection box (3) from the DEU (1).
(4) Make sure that you do not change the position of the coding switches. Record the coding switch positions.