Honeywell International Inc. RTA-50D Manuale Utente

MAINTENANCE MANUAL

965-1696

FAULT ISOLATION

Planning Data (TASK 23-20-59-99C-801-A01)

Reason for the Job (Subtask 23-20-59-99C-002-A01)

(1)

Use the procedures in this section to isolate faults.

(2)

Fault isolation is the process of isolating the source of a system failure to an LRU or to the
aircraft wiring.

(3)

It is recommended that a system test of the RTA-50D VDR be done in accordance with the
instructions provided in the aircraft manufacturer’s AMM to confirm the reported fault condition.

(4)

Access to the equipment bay is necessary to view the RTA-50D VDR front panel maintenance
status information and/or to initiate a self-test of the RTA-50D VDR equipment.

(5)

Fault isolation in the RTA-50D VDR includes a continuity check of the interwiring and the
assurance that correct installation techniques and procedures have been followed.

Job Setup Data (Subtask 23-20-59-99C-003-A01)

(1)

The list that follows identifies Honeywell publications that are related to this section:

• Not applicable.

Procedure (TASK 23-20-59-810-801-A01)

Job Setup (Subtask 23-20-59-810-001-A01)

CAUTION:

USE INDUSTRY APPROVED ELECTROSTATIC DISCHARGE SENSITIVE
PRECAUTIONS. THE RTA-50D VERY-HIGH FREQUENCY DATA RADIO CONTAINS
ELECTROSTATIC DISCHARGE SENSITIVE ITEMS.

CAUTION:

DO NOT DROP OR HIT THE RTA-50D VERY-HIGH FREQUENCY DATA RADIO
DURING THESE PROCEDURES. THE RTA-50D VERY-HIGH FREQUENCY DATA
RADIO CONTAINS AN ASSEMBLY THAT CAN BE DAMAGED FROM INCORRECT
USE.

(1)

Obey the precautions.

Functional Self-Test (Subtask 23-20-59-810-002-A01)

(1)

A functional self-test of the RTA-50D VDR can be initiated by pressing the test key push-button
on the front panel.

(2)

Results of the functional self-test are displayed on the LEDs located on the front panel. Refer
to Figure 1001.

EFFECTIVITY

ALL

23-20-59

Page 1001

1 Mar 2011