Failure of the MMR2 without Cockpit Effect

TASK 34-36-00-810-869-A
Failure of the MMR2 without Cockpit Effect

1. Possible Causes

MMR-2 [40RT2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-36-00-740-003	BITE Test of the MMR
AMM 34-36-31-000-001	Removal of the ILS Receiver
AMM 34-36-31-400-001	Installation of the ILS Receiver

3. Fault Confirmation
Subtask 34-36-00-740-150-A ** ON A/C NOT FOR ALL

A. Test
Do the BITE test of the MMR2 AMM 34-36-00-740-003.

4. Fault Isolation
Subtask 34-36-00-810-136-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message MMR2(40RT2):

on the MCDU, push the line key adjacent to the maintenance message class number to get access to the trouble shooting data and read the related fault code.
make a record of the fault code.

NOTE: Use only the second and third digits of the fault code(s).

(1) If the trouble shooting data give one of the fault codes that follow.
XA0X, XA1X, XA2X, XA3X, XA4X, XA5X, XA6X, XA7X, XA8X, XA9X, XAAX, XABX, XACX, XADX, XAEX, XAFX, XB0X, XB1X, XB2X, XB3X, XB4X or X8BX

no maintenance action is necessary.

(2) If the trouble shooting data do not give one of these fault codes:

replace the MMR-2 [40RT2] AMM 34-36-31-000-001 and AMM 34-36-31-400-001.

Subtask 34-36-00-740-151-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:02 UTC