Operational Test of the Windshield Anti-Icing and Defogging

TASK 30-42-00-710-001-A
Operational Test of the Windshield Anti-Icing and Defogging

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-007-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ICE & RAIN Page

3. Job Set-up
Subtask 30-42-00-861-050-A

A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 30-42-00-865-054-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
122VU	ANTI ICE/WHC/2	5DG2	W13
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/WHC/1	5DG1	X13
123VU	ANTI ICE/L/WHSLD	1DG1	AF10
123VU	ANTI ICE/R/WHSLD	1DG2	AF03

Subtask 30-42-00-860-050-A

C. Aircraft Maintenance Configuration
(1) On the PROBE/WINDOW HEAT section of panel 25VU:

make sure that the PROBE/WINDOW HEAT pushbutton switch is released (the ON legend is off).

(2) On one MCDU, get the SYSTEM REPORT/TEST/ICE & RAIN page (Ref. AMM TASK 31-32-00-860-007).

4. Procedure
Subtask 30-42-00-710-050-A

A. Operational Test of the Windshield Anti-Icing and Defogging

ACTION	RESULT
1.On the MCDU: push the line key adjacent to the WHC1(2) indication	The WHC1(2) page comes into view
push the line key adjacent to the TEST indication	After some seconds, the TEST OK indication comes into view.

5. Close-up
Subtask 30-42-00-860-055-A

A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.

Subtask 30-42-00-862-050-A

B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 00:30:55 UTC