Printing of the EVMU Data not possible from the MCDU1

TASK 31-35-00-810-813-A
Printing of the EVMU Data not possible from the MCDU1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 22-82-12-000-001	Removal of the MCDU
AMM 22-82-12-400-002	Installation of the MCDU
ASM 228604
ASM 313501
AMM 31-35-22-000-001	Removal of the Printer
AMM 31-35-22-400-001	Installation of the Printer
AMM 77-32-34-000-040	Removal of the Monitoring Unit Engine Vibration (EVMU)
AMM 77-32-34-400-040	Installation of the Vibration Monitoring Unit (EVMU)

3. Fault Confirmation
Subtask 31-35-00-865-062-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AUTO FLT/MCDU/1	11CA1	B01
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1 AND 2/EVMU	1EV	R44
** ON A/C ALL
121VU	PTR/SPLY	6TW	J21
121VU	CFDS/CFDIU/SPLY	2TW	J18
121VU	CFDS/CFDIU/BACK/UP	8TW	J17

Subtask 31-35-00-710-074-A

B. Test
On the MCDU1:

get the EVMU page on the MCDU MENU and then push the line key adjacent to the PRINT indication.

4. Fault Isolation
Subtask 31-35-00-810-062-A ** ON A/C NOT FOR ALL

A. If it is not possible to print the EVMU data on the printer (4TW):

(1) If the fault continues:

(a) If the fault continues:

do a check of the wiring from EVMU (1EV) pins AA/13A, 13C to printer (4TW) pins A/j, X ASM 313501.

1 If there is no continuity:

2 If there is continuity:

do a check of the wiring from MCDU1 (3CA1) pins A/27, 28 to CFDIU (1TW) pins AB/3H, 3J ASM 228604.

a If there is no continuity:

b If there is continuity:

Subtask 31-35-00-710-075-A

B. Do the action given in Para. 3.B.

[Rev.8 from Aug 2018] 2026.04.04 04:30:02 UTC