User's Manual

SECTION III OPERATION
SM 7063 07/97 3-20
3.8.15 Performing a CDU Self Test
This function allows the locomotive operator to repeat the CDU power-on self test without having to
power the unit OFF and back ON.
1. To select the Self Test function, press the
MENU UP
or
MENU DOWN
key until
the Function Menu
Display
reads:
“Self Test: press SET “
2. The
Function Menu Display
will show the following test sequence:
“Self Test in progress”
“Union Switch & Signal Inc.”
(by default) or a customer specified character string.
“Version: Revision X”
.
“Boot PROM Version: REV X”
.
“RAM test: passed”
.
“ROM test: passed”
.
“EEPROM test: passed”
.
“USC test: passed”
.
“Boot ROM test: passed”
.
“Self Test Complete: passed”
.
In the event that a test item has failed, this will be indicated as such, and can be noted and used by the
locomotive operator to inform shop maintenance personnel.
3.9 PERFORMING A LAMP TEST
To perform a Lamp Test, press the
MENU UP
and
MENU DOWN
keys simultaneously as indicated on
the front panel artwork. While the 2 keys are pressed, all LED annunciators and all LED display
segments will light to the level determined by the current brightness setting.