Motorola F5207A - Manual (Page 12)

12 MW800 CPU Owner’s Manual
• Internal temperature exceeds the high operational limit.
If during operation the ambient temperature exceeds the operating temperature
range or internal temperature exceeds the high operational limit for any
reason, the CPU processor gradually slows down, and eventually powers off.
A message ”CPU temperature is high. The system will shutdown in 3
minutes. Please save your work” will warn you about this event.
CAUTION: If overheating is a reason for the shut down, do not turn on the
device until it cools down.
•
Vehicle battery is discharged.
If, during normal operation, the battery voltage drops below 10.5VDC the
device will provide Low Battery indication (the MW800 display power
indicator blinks yellow).
A message ”Vehicle Battery is Low. The system will shutdown in 3
minutes. Please save your work” will warn you about this event.
If the voltage continues to drop, the device automatically powers off at
8.5VDC.
• Drops in car battery voltage.
If battery voltage drops below the 8.8V limit for 20 seconds or more, the
device will execute critical shut off and power itself off.
Power Management
This chapter describes low-power mode (standby) and resume normal operating
mode. In low-power state, the CPU enters a power-saving mode, turns off the display
backlight and slows down the CPU speed; the internal radios remain powered on. To
resume normal operation, touch the display panel or press any display function key.
Standby
The CPU box can enter low-power state (standby) either manually or automatically
when System Standby time-out occurs. The CPU will enter Standby mode via the
following methods:
• Press the Standby button on the right side of the MW800 display.
• Press on the Power button. The CPU can be configured to enter Standby mode
when you press the Power button. For details about this option, refer to the
help file attached to Power Options (Start -> Settings -> Control Panel ->
Power Options).
• The device can be configured to automatically enter a low-power state when
System standby time-out occurs. For details about this option, refer to the help
file attached to Power Options (Start -> Settings -> Control Panel -> Power
Options).