Transmit 429 data page
(Ref. Fig. 027)
The ACARS TX 429 DATA page is accessed via the ACARS STATUS
page.
The purpose of this page is to display the status of the 429
words broadcast by the MU. The bits of labels 030, 172, 270
and 377 are displayed on this page.
Line key 2L is used to select the 429 word to be displayed.
The initial value is label 172.
R 1EFF : 001-049, 101-105, 1 23-26-00Page 38 1 1 May 01/05 1 1 1CES 1
ACARS TX 429 DATA Page Figure 027
R 1EFF : 1 1 1CES 001-049, 101-105, 1 111 23-26-00 Page 39 May 01/05
Every time that line key 2L is pushed, the label changes to
the next value in the sequence (030, 172, 270, 377). When
label 377 is displayed and line key 2L is pushed, then label
030 is displayed. Bits 32 to 9 inclusive of the selected label
are displayed on line 9, adjacent to line keys 4L and 4R.
4_ LRU status page
(Ref. Fig. 028)
The ACARS LRU STATUS page is accessed via the ACARS STATUS
page. The ACARS LRU STATUS page displays the state of the
activity logic for each LRU. The name of each LRU is displayed
in columns 1-10 and its status in columns 12-24. The ACTIVE
indication is displayed for each active LRU and the INACTIVE
indication is displayed for each inactive LRU.
If an LRU is not installed, according to either the aircraft
configuration broadcast words, the Application, database, or
the default LRU configuration specification, then the
corresponding field shows the NOT INSTALLED indication. If an
LRU is installed but no 429 broadcast words are processed, the
NO 429 DATA indication is displayed. If an LRU name is not
supplied, then neither the name or status will be displayed.
Actuation of LSK 6R (PRINT prompt) attempts to print the ACARS
LRU STATUS page on the cockpit printer.
Actuation of LSK 6L (RETURN TO STATUS MENU prompt) returns the
user to the ACARS STATUS menu.
5_ Discrete status page
(Ref. Fig. 029, 030)
The ACARS DISCRETE pages are accessed via the ACARS STATUS
page. The status of the ACARS discrete inputs and outputs are
displayed and updated at 1 second intervals.
The character "1" represents an open circuit and the character
"0" represents ground on the MCDU page generated by the MU.
(c) Test page (Ref. Fig. 031) The ACARS TEST page is selected via the ACARS MAINTENANCE page. The first page of the ACARS TEST page enables the user to exercise basic features of the ACARS system. The ACARS TEST 2/2 page enables the user to perform a SOLO word loop back test on LRUs. Test functions are activated by pushing the following MCDU keys:
R 1EFF : 001-049, 101-105, 1 23-26-00Page 40 1 1 May 01/05 1 1 1CES 1
ACARS LRU STATUS Page Figure 028
R 1EFF : 1 1 1CES 001-049, 101-105, 1 111 23-26-00 Page 41 May 01/05
ACARS DISCRETE Page 1/5 to 3/5
Figure 029
R 1EFF : 001-049, 101-105, 1 23-26-00Page 42 1 1 May 01/05 1 1 1CES 1
ACARS DISCRETE Page 4/5 to 5/5
Figure 030
R 1EFF : 001-049, 101-105, 1 23-26-00Page 43 1 1 May 01/05 1 1 1CES 1
ACARS TEST Page Figure 031
R 1EFF : 1 1 1CES 001-049, 101-105, 1 111 23-26-00 Page 44 May 01/05
Page 1 Line key 1L (VHF LINK prompt) - VHF Link Test Line key 2L (PRINTER prompt) - Printer Interface Test Line key 3L (COMM AUDIT prompt) - Display Audit screens
Line key 1R (SAT LINK prompt) - Satellite Link Test Line key 2R (SDU prompt) - SDU Interface Test Line key 3R (MCDU TEST prompt) - MCDU Screen Test Line key 5R (RAM TEST prompt) - MU RAM Test
Page 2 Line key 1L (LRU1 designation) - LRU1 Interface Test Line key 2L (LRU2 designation) - LRU2 Interface Test Line key 3L (LRU3 designation) - LRU3 Interface Test Line key 2R (LRU4 designation) - LRU4 Interface Test Line key 3R (LRU5 designation) - LRU5 Interface Test
The LRU names displayed on the second page are dependent upon which LRUs are installed.
Actuation of line key 6L (RETURN TO MAINT MENU prompt) returns the user to the ACARS MAINTENANCE page.
1_ VHF link test
The LINK TEST function attempts to downlink a label Q0 message
to the ground network. If there is another downlink message
queued, then its success will be used for purposes of this
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