User's Guide

DRAFT
Page 4-4
17 Mar 2016
23-15-87
© Honeywell International Inc. Do not copy without express permission of Honeywell.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
1 In the MPU, press EQUAL SIGN (=).
A list of reports appears. Active reports show as toggled on. Inactive reports show
as toggled off.
2 To activate a report, type the report number, and then press ENTER.
NOTE: Multiple reports can be activated at the same time; type and enter each
report number separately.
3 To turn off individual, active reports, type the report number you want to toggle off,
and then press ENTER.
4 To turn off all active reports, press EQUAL SIGN (=), and then press X.
(3) Menu Item Descriptions
This section provides a brief description of the Level 1, MPU menu items used for test and
fault isolation procedures.
In active SDUs, menu screens display the firmware version.
NOTE: Depending on the version of software installed and the system configuration, the
menu and reports available to users may differ slightly from the reports described in
this document.
(a) Menu 1
Table 4-3 shows an example Menu 1 screen display.Table 4-3 describes the items
available in Menu 1.
(b) Menu 2
Table 4-4 describes the items available in Menu 2.
Table 4-3 Menu 1 Item Descriptions
Menu Item Description
Y: explain error status Reports error status when failure LED is illuminated. Displays OK if no error
exists.
F: print equipment
stats
Prints a list of the current equipment statistics, including temperature,
number of power-ups, hours of operation, time since power-up, and
processor usage.
Table 4-4 Menu 2 Item Descriptions
Menu Item Description
L: re-enter logon
password
Permits a user to enter a new access level password without having to
reboot the SDU.
Z: reset A781 SDU Enables a complete, soft reset of the SDU; once reset, the menu access
password must be re-entered.
DRAFT as of
4 Mar 2016