Failure of the Aft-Left Lateral Dome Light in the Avionics Compartment

TASK 33-35-00-810-803-A
Failure of the Aft-Left Lateral Dome Light in the Avionics Compartment

1. Possible Causes

P/BSW-AVIONICS COMPT LT (23LS)
RELAY-PWR SPLY, AVIONICS COMPT AFT L LT CTL (24LS)
wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 33-35-00-720-001	Functional Test of the Avionics-Compartment Lighting
ASM 333501
AIPC 333508

3. Fault Confirmation
Subtask 33-35-00-720-054-A

A. Test
Do the functional test of the equipment compartment lighting AMM 33-35-00-720-001.

4. Fault Isolation
Subtask 33-35-00-810-052-A

A. If during the functional test when you push the AVIONICS COMPT LT pushbutton-switch (23LS) the aft-left lateral dome-light in the avionics compartment does not operate correctly:

remove the P/BSW-AVIONICS COMPT LT (23LS) AIPC 333508.

(1) If the fault continues:

remove the RELAY-PWR SPLY, AVIONICS COMPT AFT L LT CTL (24LS) AIPC 333508.

(a) If the fault continues:

do a check and repair the wiring between the pushbutton switch (23LS) pin A/C2 and the pin A/X1 of the power supply relay (24LS) ASM 333501.

Subtask 33-35-00-720-055-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:31:57 UTC