Read the Hardware Pin Programming of the Display Management Computer (DMC)

TASK 31-60-00-740-015-A
Read the Hardware Pin Programming of the Display Management Computer (DMC)

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

1. Reason for the Job
To make sure that the pin programming of the Display Management Computers (DMCs) is correct.
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 31-32-00-860-008-A	Procedure to Get Access to the SYSTEM REPORT/TEST/INST Page
DMC Pin-Programming Hardware-Pages

3. Job Set-up
Subtask 31-60-00-860-150-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) On the Multipurpose Control and Display Unit (MCDU), get the SYSTEM REPORT/TEST/INST page (Ref. AMM TASK 31-32-00-860-008).

Subtask 31-60-00-865-090-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/DMC1/SPLY	10WT1	E11
49VU	EIS/DMC1/SWTG	21WT1	E09
** ON A/C NOT FOR ALL
49VU	EIS/DMC3/SWTG	21WT3	E07
** ON A/C NOT FOR ALL
49VU	EIS/DMC1/SPLY	10WT1	E10
49VU	EIS/DMC1/SWTG	21WT1	E08
** ON A/C NOT FOR ALL
121VU	EIS/DMC3/SPLY	10WT3	Q09
121VU	EIS/DMC2/SPLY	10WT2	Q08
121VU	EIS/DMC2/SWTG	21WT2	R08

4. Procedure
Subtask 31-60-00-740-065-A ** ON A/C NOT FOR ALL

A. Read the Pin Programming Indications for the DMC

NOTE: This procedure is for DMC 1. For DMC 2 and DMC 3, use the indications between parentheses.

ACTION	RESULT
1.On the MCDU, on the INST menu page:	On the MCDU:
Push the line key adjacent to the EIS 1(2, 3) indication.	The DMC 1(2, 3) main-menu page comes into view.
2.On the DMC 1(2, 3) page:
Push the line key adjacent to the PIN PROG/STATUS AND XLOAD indication.	The DMC 1(2, 3) PIN PROG/STATUS AND XLOAD page comes into view.
Push the line key adjacent to the PIN PROG indication.	The DMC 1(2, 3) PIN PROG page comes into view.
Push the line key adjacent to the HARD PIN PROG indication.	The DMC 1(2, 3) HARD PIN PROG page comes into view.
Push the line key adjacent to the DMC 1(2, 3) indication.	The DMC 1(2, 3) HARD PIN PROG page 1/3 comes into view with the status of the pin-programming hardware indications: NOTE: The pin-programming activation function comes into view in binary code: 0: The pin programming is not activated (set to OPEN). 1: The pin programming is activated (set to GROUND).
Push the down arrow key to get the subsequent pages.	The DMC 1(2, 3) HARD PIN PROG page 2/3 comes into view with the status of the pin-programming hardware indications: NOTE: The pin-programming activation function comes into view in binary code: 0: The pin programming is not activated (set to OPEN). 1: The pin programming is activated (set to GROUND).
Push the down arrow key to get the subsequent pages.	The DMC 1(2, 3) HARD PIN PROG page 3/3 comes into view with the status of the pin-programming hardware indications: NOTE: The pin-programming activation function comes into view in binary code: 0: The pin programming is not activated (set to OPEN). 1: The pin programming is activated (set to GROUND). : Not defined.

5. Close-up
Subtask 31-60-00-860-151-A ** ON A/C NOT FOR ALL

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.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Put the system back to the serviceable condition.

[Rev.10 from 2021] 2026.04.01 00:37:53 UTC