Visual Inspection of the Essential Transformer Rectifier (TR)

TASK 24-34-00-200-801-A
Visual Inspection of the Essential Transformer Rectifier (TR)

ZONE: 126
FIN: 1PE

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	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
126	LATERAL AVIONIC COMPARTMENT
812

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-34-00-100-801-A	Cleaning of the Essential Transformer Rectifier (TR)
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
Essential TR

3. Job Set-up
Subtask 24-34-00-861-050-A

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

Subtask 24-34-00-010-051-A

B. Get access to the avionics compartment.
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below access door 812.
(2) Open access door 812 (Ref. AMM TASK 52-41-00-010-002).
(3) In the avionics compartment, open the access panel of AC/DC emergency power-center 106VU.

Subtask 24-34-00-865-057-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
106VU	ESS TR/SPLY	4PE	C01

4. Procedure
Subtask 24-34-00-210-050-A

A. Visual Inspection of the Essential TR

Essential TR

(1) Do a visual inspection of the essential TR (1) and the adjacent area:
(a) If there is a layer of dust or loose dirt on the ventilation grid area of the essential TR (1), clean it (Ref. AMM TASK 24-34-00-100-801).

Subtask 24-34-00-865-058-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
106VU	ESS TR/SPLY	4PE	C01

5. Close-up
Subtask 24-34-00-410-051-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) In the avionics compartment, close the access panel of AC/DC emergency power-center 106VU.
(3) Close access door 812 (Ref. AMM TASK 52-41-00-410-002).
(4) Remove the access platform(s).

Subtask 24-34-00-862-050-A

B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:23:29 UTC