Chapter 4 — Troubleshooting and Maintaining the CK3
68 CK3 Mobile Computer User’s Manual
You scan or enter
an option for the
Scanner Model
configuration
command, and you
hear three low beeps
and nothing
happens.
You may have scanned or entered a Scanner Model
command that does not apply to the type of scanner
that you have installed. Try scanning or entering the
Scanner Model command again and select an option
for the type of device you are using.
You cannot type a
character on the
keypad or you can
only type uppercase
or lowercase letters.
You may have locked a modifier key on the keypad.
Press the necessary key sequence to unlock the key.
For help, see “Using the Keypad” on page 7.
You press and
nothing happens.
• Make sure the backlight is on.
• Make sure you have a charged battery that is
installed correctly. For help, see “Charging the
Battery” on page 4.
• The battery may be discharged. Replace the battery
with a spare charged battery, or charge the battery.
• Reset the CK3. For help, see “Resetting the CK3”
on page 77.
You insert a
microSD card and
cannot find the
SDMMC Disk folder
on the CK3. Or, you
insert a bootable SD
card and the CK3
does not boot from
the card.
• The microSD card may not be installed correctly.
Insert the microSD card as described in Steps 2
through 4 of “Using a microSD Card” on
page 23.
• The microSD card may be damaged. Try another
microSD card.
The Battery status
LED is on.
• If the battery status LED is a steady green, the
battery is more than 95% charged and computer is
on a charger.
• If the battery status LED is blinking red, then the
battery is low. Replace or charge the battery.
• If the battery status LED is a steady red, the main
battery is on charge.
Problems While Configuring the CK3 (continued)
Problem Possible Solution