User's Manual

Chapter 3 Controls & Indicators
Power/Status Panel Indicators & Control:
The power/status panel shown in Figure 2 contains 2 switches and 4 LED’s used to
monitor and control the main power provided to the MMI as well as to monitor the
internal temperature. All four of the status LED’s should be off under normal conditions.
The bottom switch is the main power switch and is used to power the MMI on and off.
The alarm silence switch is a push-button used to silence the audible alarm which is
activated any time a new alarm condition is detected. Once an alarm condition is
detected, an audible alarm will beginning sounding on and off at about 2 beeps per
second. Also, the alarm LED will begin flashing at the same rate as the audible alarm.
The audible alarm is used to alert the operator that a major status problem has been
detected, and requires immediate attention. If the alarm is chosen to be ignored, then the
alarm silence push-button may be pressed, which will shut off the audible alarm. The
alarm LED will continue to flash, however, until the actual alarm condition ceases. The
audible alarm will not sound again until all alarm conditions are eliminated and then one
or more conditions recur, or until the MMI is powered off then back on again. The
following three items are monitored by the power/status module for proper operation:
• +12 LED: This will be illuminated any time the external 12 volt supply
connected to the cigarette lighter drops to an unusable voltage.
This alarm may occur due to the power cable becoming
disconnected, or if the vehicle alternator is unable to produce
adequate operating current.
• Batt LED: This will be illuminated any time the internal battery voltage drops
to an unusable voltage. Once this alarm occurs, the MMI should
be
immediately shut down. Ignoring this alarm could cause
unpredictable behavior. The MMI is able to operate approximately
10 minutes from the internal battery before the voltage becomes
unusable.
• Temp LED: This will be illuminated any time the internal MMI temperature
exceeds approximately 160° F. This condition may be caused
by several factors, including cooling fan failure, blocked fan
intakes, or excessive ambient temperature.
• Alarm LED: This will flash on and off approximately 2 times per second
whenever any or all of the +12, Batt, and Temp LED’s are
illuminated. This LED will continue to flash until all of the
+12, Batt, and Temp alarms are discontinued.