Seat-row identifier / Pax Call indicator fault

TASK 23-73-00-810-928-A
Seat-row identifier / Pax Call indicator fault

1. Possible Causes

Printed Circuit Board (PCB)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-73-00-710-035	Operational Test of the Cabin LED lamps through the MCDU
AMM 23-73-00-740-005	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
AMM 23-73-41-000-002	Removal of the Passenger Interface and Supply Adapter
AMM 23-73-41-400-002	Installation of the Passenger Interface and Supply Adapter

3. Fault Confirmation
Subtask 23-73-00-710-344-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the CIDS Interface and Power-Up Test via the CFDS AMM 23-73-00-740-005.
(2) Do the Operational Test of the Cabin LED Lamps via the CFDS AMM 23-73-00-710-035.

4. Fault Isolation
Subtask 23-73-00-810-675-A ** ON A/C NOT FOR ALL

A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.

Subtask 23-73-00-810-676-B ** ON A/C NOT FOR ALL

B. If the fault continues:

replace the related Printed Circuit Board (PCB) AMM 23-73-41-000-002 and AMM 23-73-41-400-002.

5. Close-up
Subtask 23-73-00-710-345-A ** ON A/C NOT FOR ALL

A. Do the test as given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:25:57 UTC