The ON lamp of the PED switch in the cabin does not come on

TASK 25-21-00-810-801-A
The ON lamp of the PED switch in the cabin does not come on

1. Possible Causes

MODULE-CABIN ASSIGNMENT [115RH]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-73-00-861-001	Energize the Cabin Intercommunication Data System (CIDS)
AMM 23-73-19-400-002	Installation of the Cabin Assignment Module
ASM 252100

3. Fault Confirmation
Subtask 25-21-00-710-050-C ** ON A/C NOT FOR ALL

A. No ON lamp installed on the PED switch - LED device controlled by CIDS (Flight Attendant Panel 120RH).

Subtask 25-21-00-710-050-D ** ON A/C NOT FOR ALL

A. Test
(1) Make sure that the Cabin Intercommunication Data-System (CIDS) is energized AMM 23-73-00-861-001.
(2) Push the PED POWER switch on the FAP (120RH) to the ON position and make sure that the indicator changes from amber to green.

4. Fault Isolation
Subtask 25-21-00-810-071-E ** ON A/C NOT FOR ALL

A. No ON lamp installed on the PED switch - LED device controlled by CIDS (Flight Attendant Panel 120RH).

Subtask 25-21-00-710-071-C ** ON A/C NOT FOR ALL

B. No ON lamp installed on the PED switch - LED device controlled by CIDS (Flight Attendant Panel 120RH).

Subtask 25-21-00-810-071-F ** ON A/C NOT FOR ALL

C. If the indicator:

Stays amber, do step (1)
Is OFF, do step (2).

(1) Do a check and repair the wiring between the MCU and the CIDS-director ASM 252100.
(a) If the fault continues:

Do the trouble shooting procedure related to the maintenance message.

(2) Do a check for the correct installation of the current MODULE-CABIN ASSIGNMENT [115RH] AMM 23-73-19-400-002.
(a) If the fault continues:

Do the trouble shooting procedure related to the maintenance message.

Subtask 25-21-00-710-071-A ** ON A/C NOT FOR ALL

D. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:00 UTC