2 - 28 MC3000 User Guide
4. Press the scan button. The Scan LED Indicators illuminate red to indicate that the laser is on. The Scan LED
Indicators illuminate green and a beep sounds to indicate a successful decode.
Resetting the Mobile Computer
If the mobile computer stops responding to input, reset it. There are two reset functions, warm boot and cold boot.
A warm boot restarts the mobile computer by closing all running programs. All data that is not saved is lost.
A cold boot also restarts the mobile computer, but erases all stored records and entries from RAM. In addition it
returns formats, preferences and other settings to the factory default settings.
Perform a warm boot first. If the mobile computer still does not respond, perform a cold boot.
Performing a Warm Boot
To perform a warm boot on 28, 38 and 48-key keypad configurations:
1. Press and simultaneously hold 7, 9 and Power. Do not hold down any other keys or buttons.
2. As the mobile computer initializes MC3000 demo window appears.
To perform a warm boot on 20-key keypad configurations:
1. Press and simultaneously hold the 7 and 9 keys and the press the MENU and Fn keys. Do not hold down any
other keys or buttons.
2. As the mobile computer initializes MC3000 demo window appears.
Performing a Cold Boot
A cold boot restarts the mobile computer and erases all user stored records and entries from RAM. Never perform
a cold boot unless a warm boot does not solve the problem.
To perform a cold boot 28, 38 and 48-key keypad configurations:
1. Simultaneously press and then release the 1, 9 and Power keys. Do not hold down any other keys or buttons.
As the mobile computer initializes, the Symbol splash window, Figure 1-7 on page 1-9, appears for about a
minute.
2. Calibrate the touch screen. See Calibration Screen on page 1-10 to calibrate the mobile computer screen.
To perform a cold boot on 20-key keypad configurations:
1. Simultaneously press and then release the 1 and 9, MENU and Fn keys. Do not hold down any other keys or
buttons. As the mobile computer initializes, the Symbol splash window, Figure 1-7 on page 1-9, appears for
about a minute.
CAUTION Files that remain open during a warm boot may not be retained.
CAUTION Files that remain open during a warm boot may not be retained.
CAUTION Cold boot resets the mobile computer, to the default settings. All added applications and all stored data are
removed. Do not cold boot without support desk approval.
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