User's Manual

7
Turning the MDC On
The MDC is powered on and off with the ON/Off Key. In some systems, the MDC is
powered on and off with the vehicle ignition.
The MDC will display the Mentor logo along with software revision information. The first
screen of the customer’s application file should appear after approximately 2 seconds.
Adjusting the Backlight
The backlight for the keypad and LCD display is adjusted by pressing the BACKLIGHT
key. Each time the key is pressed, the backlighting will switch to the next of eight different
levels of intensity.
Accessing the MDC Maintenance Menus
Many MDC parameters (unit ID, communications parameters, time/date) may be
modified through the MDC maintenance menus. These menus are only intended for use
by qualified technicians and, therefore, they are protected by a special access sequence.
To access the menus, press the keys *CONFIDENTIAL* in order within a 2 second time
frame. The screen display that should appear is shown in the figure below. (If you are
having problems entering the maintenance menus, it is likely that you are not pressing the
coded keypad sequence fast enough).