Removal of the Data Loading Routing Box (DLRB)

TASK 31-38-34-000-001-A
Removal of the Data Loading Routing Box (DLRB)

ZONE: 120
FIN: 102TD ** 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) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
120	AVIONICS COMPARTMENT
824

C. 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
Data Loading Routing Box (102TD) ** ON A/C NOT FOR ALL
Data Loading Routing Box (102TD) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 31-38-34-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 31-38-34-941-050-A ** ON A/C NOT FOR ALL

B. Job set-up
(1) In the cockpit, put WARNING NOTICE(S) in position on the overhead panel, to tell persons not to start the Data Loading Selector.

Subtask 31-38-34-941-050-C ** ON A/C NOT FOR ALL

B. Job set-up
(1) In the cockpit, on center pedestal 11VU, put the WARNING NOTICE(S) in position to tell persons not to start the Data Loading Selector Unit (DLSU).

Subtask 31-38-34-010-050-A ** ON A/C NOT FOR ALL

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

Subtask 31-38-34-865-050-A ** ON A/C NOT FOR ALL

D. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	DATA/LOADER/SPLY	3TD	J16
** ON A/C NOT FOR ALL
121VU	DLS&/DLRB/SPLY	5TD	J15
** ON A/C NOT FOR ALL
121VU	DLSU &/DLRB/SPLY	5TD	J15
** ON A/C NOT FOR ALL
121VU	DATA/LOADER/SPLY	3TD	J39
121VU	DLSU &/DLRB/SPLY	5TD	J38

4. Procedure
Subtask 31-38-34-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the DLRB
(1) Loosen the coupling screws (6) from the electrical connectors (5).
(2) Disconnect the electrical connectors (5) from the DLRB (1).
(3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Remove the screws (2) and the washers (3).
(5) Remove the DLRB (1).

Subtask 31-38-34-020-050-C ** ON A/C NOT FOR ALL

A. Removal of the Data Loading Routing Box (DLRB)
(1) Loosen the coupling screws (6) from the electrical connectors (5).
(2) Make match marks on the components that you disconnect/remove to record their connections/positions. This is important for the subsequent installation procedure.
(3) Disconnect the electrical connectors (5) from the DLRB (1).
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Remove the screws (2) and the washers (3).
(6) Remove the DLRB (1).

[Rev.10 from 2021] 2026.04.01 00:36:44 UTC