Loss of the ADF2 Data Bus Identified by the CFDS

TASK 34-53-00-810-810-A
Loss of the ADF2 Data Bus Identified by the CFDS

1. Possible Causes

RECEIVER-ADF, 2 [2RP2]
wiring of the BEARING OUTPUT 2 bus from the ADF receiver 2 (2RP2) to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-32-00-869-002	Procedure for the Class 3 Fault Reading
ASM 345301
AMM 34-53-31-000-002	Removal of the ADF Receiver
AMM 34-53-31-400-002	Installation of the ADF Receiver

3. Fault Confirmation
Subtask 34-53-00-865-068-A ** ON A/C NOT FOR ALL

A. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	COM NAV/ADF/2	1RP2	K02

Subtask 34-53-00-740-068-A ** ON A/C NOT FOR ALL

B. Test
On the CFDS MENU page, get access to the AVIONICS STATUS page AMM 31-32-00-869-002.

4. Fault Isolation
Subtask 34-53-00-810-061-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message NO ADF2 DATA:

(1) If the fault continues:

do a check and repair the wiring of the BEARING OUTPUT 2 bus from the ADF receiver 2 (2RP2) to the first terminal block ASM 345301.

Subtask 34-53-00-740-069-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.B.

[Rev.8 from Aug 2018] 2026.04.04 04:33:26 UTC