Failure of the Captain Reading Light

TASK 33-12-00-810-809-A
Failure of the Captain Reading Light

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 33-12-00-710-001	Operational Test of the General Illumination
ASM 331201
AMM 33-12-12-000-001	Removal of the Reading Light
AMM 33-12-12-400-001	Installation of the Reading Light

3. Fault Confirmation
Subtask 33-12-00-710-066-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the operational test of the general illumination AMM 33-12-00-710-001.

NOTE: Do this test for the instrument lighting, the reading lights and the center pedestal light only.

4. Fault Isolation
Subtask 33-12-00-810-058-A ** ON A/C NOT FOR ALL

A. If, during the operational test, the Captain reading light does not operate correctly:

make sure that there is 28VDC at the Captain reading light (25LE) pin 1 ASM 331201.

(1) If there is 28VDC:

(2) If there is no 28VDC:

do a check for a ground signal at the Captain reading light (25LE) pin 2 ASM 331201.

(a) If there is no ground signal:

repair the wiring between the Captain reading light (25LE) pin 2 and the ground terminal ASM 331201.

(b) If there is a ground signal:

repair the wiring between the Captain reading light (25LE) pin 1 and the circuit breaker (5LE) ASM 331201.

Subtask 33-12-00-710-067-A ** ON A/C NOT FOR ALL

B. Test
(1) Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:31:52 UTC