ADIRS CDU Inoperative

TASK 34-14-00-810-892-A
ADIRS CDU Inoperative

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 341101
AMM 34-12-12-000-001	Removal of the ADIRS CDU
AMM 34-12-12-400-001	Installation of the ADIRS CDU
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-14-00-740-001	Interface Test of the IR

3. Fault Confirmation
Subtask 34-14-00-740-195-A

A. Test
(1) Do the Interface test of the IR AMM 34-14-00-740-001.

4. Fault Isolation
Subtask 34-14-00-810-144-C ** ON A/C NOT FOR ALL

A. If the BITE test gives the maintenance message ADIRS CTLPNL (2FP/221VU)/ ADIRU1 (1FP1):

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring of the CDU PWR discretes from the ADIRU1 (1FP1) to the ADIRS CDU (2FP) ASM 341101.

Subtask 34-14-00-810-145-C ** ON A/C NOT FOR ALL

B. If the BITE test gives the maintenance message ADIRS CTLPNL (2FP/221VU)/ ADIRU2 (1FP2):

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring of the CDU PWR discretes from the ADIRU2 (1FP2) to the ADIRS CDU (2FP) ASM 341101.

Subtask 34-14-00-810-146-C ** ON A/C NOT FOR ALL

C. If the BITE test gives the maintenance message ADIRS CTLPNL (2FP/221VU)/ ADIRU3 (1FP3):

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring of the CDU PWR discretes from the ADIRU3 (1FP3) to the ADIRS CDU (2FP) ASM 341101.

Subtask 34-14-00-740-196-A

D. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:48 UTC