Lavatory Signs - One Lamp in the Lavatory Occupied Sign does not come on

TASK 33-26-00-810-801-A
Lavatory Signs - One Lamp in the Lavatory Occupied Sign does not come on

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 33-26-00-710-001	Operational Test of the Lavatory Lighted Signs WJ
AMM 33-26-23-000-001	Removal of the Lavatory-Occupied Signs (WJ)
AMM 33-26-23-400-001	Installation of the Lavatory-Occupied Signs (WJ)

3. Fault Confirmation
Subtask 33-26-00-710-050-A

A. Do the operational test of the lavatory lighted signs AMM 33-26-00-710-001.

4. Fault Isolation
Subtask 33-26-00-810-050-A

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

Subtask 33-26-00-810-056-A

B. If the test shows that one LAMP in the FWD SIGN-LAVATORY OCCUPIED [3WJ] does not come on:

(1) If the fault continues:

replace the SIGN-LAVATORY OCCUPIED [3WJ] AMM 33-26-23-000-001 and AMM 33-26-23-400-001.

Subtask 33-26-00-810-052-A

C. If the test shows that one LAMP in the AFT SIGN-LAVATORY OCCUPIED [13WJ] does not come on:

(1) If the fault continues:

Subtask 33-26-00-710-053-A

D. Do the test given in paragraph 3.A.

5. Close-up
Subtask 33-26-00-860-051-A

A. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:31:56 UTC