Loss of the Output Discretes (Windshield)

TASK 30-42-00-810-819-A
Loss of the Output Discretes (Windshield)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 30-42-00-710-001	Operational Test of the Windshield Anti-Icing and Defogging
ASM 304201
AMM 30-42-34-000-001	Removal of the Window Heat Computer (WHC)
AMM 30-42-34-400-001	Installation of the Window Heat Computer (WHC)

3. Fault Confirmation
Subtask 30-42-00-710-086-A

A. Test
(1) Do the operational test of the windshield anti-icing and defogging AMM 30-42-00-710-001.

4. Fault Isolation
Subtask 30-42-00-810-068-A

A. If the test gives the maintenance message CHECK SDAC-WINDSHIELD WHC 1 INTERFACE:

(1) If the fault continues:

do a check and repair the wiring from the WHC 1 (2DG1) to the SDAC 1 (1WV1) pin B/D to pin AA/10B and/or
do a check and repair the wiring from the WHC 1 (2DG1) to the SDAC 2 (1WV2) pin B/D to pin AA/10B ASM 304201.

Subtask 30-42-00-710-087-A

B. Do the operational test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:29:42 UTC