Inspection of the Display Unit for Legibility

TASK 31-63-22-200-002-A
Inspection of the Display Unit for Legibility

ZONE: 210

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. 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 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 31-32-00-860-008-A	Procedure to Get Access to the SYSTEM REPORT/TEST/INST Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 31-63-22-000-001-A	Removal of the Display Unit (DU)
TASK 31-63-22-100-001-A	Cleaning of the Display Unit
TASK 31-63-22-400-001-A	Installation of the Display Unit (DU)

3. Job Set-up
Subtask 31-63-22-860-056-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
(3) On the center pedestal, on SWITCHING panel 8VU:

Make sure that the EIS DMC and ECAM/ND XFR selector switches are in the NORM position.

(4) Get the SYSTEM REPORT/TEST/INST page (Ref. AMM TASK 31-32-00-860-008).
(5) Clean the display units (Ref. AMM TASK 31-63-22-100-001).

Subtask 31-63-22-865-056-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	EIS/ECAM/CTL/PNL	15WT	E12
49VU	EIS/DMC1/SPLY	10WT1	E11
49VU	EIS/DMC3/STBY/SPLY	14WT1	E10
49VU	EIS/DMC1/SWTG	21WT1	E09
49VU	LIGHTING/XFMR/115V.5V/ESS BUS	29LP	H03
** ON A/C NOT FOR ALL
49VU	EIS/DMC3/SWTG	21WT3	E07
49VU	EIS/ECAM DU/UPPER/SWTG	24WT1	E06
49VU	EIS/ECAM DU/UPPER/SPLY	13WT1	E05
49VU	EIS/PFD CAPT/SWTG	22WT1	E04
49VU	EIS/PFD/CAPT/SPLY	11WT1	E03
49VU	EIS/ND CAPT/SWTG	23WT1	E02
49VU	EIS/ND CAPT/SPLY	12WT1	E01
** ON A/C NOT FOR ALL
49VU	EIS/ECAM/CTL/PNL	15WT	E11
49VU	EIS/DMC1/SPLY	10WT1	E10
49VU	EIS/DMC3/STBY/SPLY	14WT1	E09
49VU	EIS/DMC1/SWTG	21WT1	E08
49VU	LIGHTING/XFMR/115V.5V/ESS BUS	29LP	H01
** ON A/C NOT FOR ALL
121VU	EIS/DMC3/SPLY	10WT3	Q09
121VU	EIS/DMC2/SPLY	10WT2	Q08
121VU	EIS/ECAM DU/LOWER/SPLY	13WT2	R11
121VU	EIS/ECAM DU/LOWER/SWTG	24WT2	R10
121VU	EIS/DMC2/SWTG	21WT2	R08
121VU	EIS/ND/F/O/SWTG	23WT2	R06
121VU	EIS/PFD/F/O/SWTG	22WT2	R05
121VU	EIS/ND/F/O	12WT2	R04
121VU	EIS/PFD/F/O	11WT2	R03
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 2	27LP	X05

4. Procedure
Subtask 31-63-22-710-057-A ** ON A/C NOT FOR ALL

A. Set the ECAM and the EFIS control panels to the correct configuration:
(1) On the CAPT and F/O lighting/loud speaker control panels (301VU and 500VU) on the left and right sides of the instrument panels:

Turn the PFD and ND potentiometers to the BRT position (maximum brightness).

(2) On the center pedestal, on the ECAM control panel:

Turn the UPPER DISPLAY and LOWER DISPLAY potentiometers to the BRT position (maximum brightness).

Subtask 31-63-22-740-051-A ** ON A/C NOT FOR ALL

B. Get access to DISPLAY TEST 2

NOTE: With DMC1, you control the CAPT PFD, the CAPT ND, the upper and lower ECAM DUs.
With DMC2, you control the F/O PFD and F/O ND.
If DMC1 (DMC2) is unserviceable, you can use DMC3.
To use DMC3:

On SWITCHING panel 8VU, set the EIS DMC selector switch to CAPT/3 (F/O/3).

ACTION	RESULT
On the MCDU:	On the MCDU:
1.Push the line key adjacent to the EIS1 (EIS2) indication.	The DMC1 (DMC2) page comes into view.
2.Push the line key adjacent to the PIN PROG/STATUS AND XLOAD indication.	The DMC1 PIN PROG/STATUS AND XLOAD (DMC2 PIN PROG/STATUS AND XLOAD) page comes into view.
3.Push the line key adjacent to the LCD STATUS indication.	The DMC1 LCD STATUS (DMC2 LCD STATUS) page comes into view.
4.Push the line key adjacent to the DISPLAY TEST 2 indication.	The DISPLAY TEST 2 IN PROGRESS indication comes into view. On the CAPT PFD, CAPT ND, upper and lower ECAM DUs (F/O PFD and F/O ND), the test pattern comes into view.

Subtask 31-63-22-280-051-A ** ON A/C NOT FOR ALL

C. Do a visual check of each DU for:

A white or black line
A white or black column
Pixels that are failed-on or failed-off.

NOTE: A failed-on pixel is a pixel which is always on. A failed-off pixel is a pixel which is always off.

NOTE: On the test pattern, there are black squares to find failed-on pixels and white squares to find failed-off pixels.

(1) On the CAPT PFD (F/O PFD), count and record the pixels that are defective:

Number of failed-on pixels
Number of failed-off pixels
Number of adjacent failed-on pixels
Number of sets of two adjacent failed-off pixels
Number of sets of more than two adjacent failed-off pixels.

(2) Do Step C. again on the CAPT ND, on the upper and lower ECAM DUs (F/O ND).

Subtask 31-63-22-740-052-A ** ON A/C NOT FOR ALL

D. Get access to the DISPLAY TEST 3

ACTION	RESULT
On the MCDU:	On the MCDU:
1.Push the line key adjacent to the RETURN indication.	The DMC 1(2) LCD STATUS page comes into view.
2.Push the line key adjacent to the RETURN indication (ignore the instructions).	The DMC 1(2) PIN PROG/STATUS AND XLOAD page comes into view.
3.Push the line key adjacent to the LCD STATUS indication.	The DMC 1(2) LCD STATUS page comes into view.
4.Push the line key adjacent to the DISPLAY TEST 3 indication.	The DISPLAY TEST 3 IN PROGRESS indication comes into view. On the CAPT PFD, CAPT ND, upper and lower ECAM DUs (F/O PFD and F/O ND), the test pattern comes into view.

Subtask 31-63-22-280-052-A ** ON A/C NOT FOR ALL

E. Do the visual check again (Ref. Para. C.).

Subtask 31-63-22-710-058-A ** ON A/C NOT FOR ALL

F. For each DU, replace the related DU (Ref. AMM TASK 31-63-22-000-001) and (Ref. AMM TASK 31-63-22-400-001) if the recorded defective pixels do not agree with these conditions:

There must not be more than 30 defective pixels.
There must not be more than eight failed-on pixels.
The number of failed-on pixels (not more than eight) + the number of failed-off pixels must not be more than 30 pixels.
There must not be two adjacent failed-on pixels.
There must not be more than four sets of two adjacent failed-off pixels.
There must not be a set of more than two adjacent failed-off pixels.

5. Close-up
Subtask 31-63-22-410-052-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the MCDU, to go back to the MCDU main menu:

Push the line key adjacent to the RETURN indication on this page and on the other pages which will show.

(2) Set the ECAM and the EFIS control panels to the initial configuration.
(3) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 00:38:31 UTC