
9 - 4 MC3000 Integrator Guide
Single Slot Serial/USB Cradle
The mobile computer
does not accept scan
input.
Scanning
application is not
loaded.
Verify that the mobile computer is loaded with a scanning
application.
Unreadable bar
code.
Ensure the symbol is not defaced.
Distance between
scan window and
bar code is
incorrect.
Ensure the mobile computer is within proper scanning range.
Mobile computer is
not programmed for
the bar code type.
Ensure the mobile computer is programmed to accept the type of
bar code scanned.
Mobile computer is
not programmed to
generate a beep.
If a beep on a good decode is expected and a beep is not heard,
check that the application is set to generate a beep on good decode.
Battery is low. Check the battery level. When the battery is low, the mobile
computer automatically goes into suspend mode.
Table 9-1 Troubleshooting the Mobile Computer (Continued)
Problem Cause Solution
Table 9-2 Troubleshooting the Single Slot Serial/USB Cradle
Problem Cause Solution
Mobile computer
amber Charge LED
Indicator does not
light when mobile
computer inserted.
Cradle is not receiving power. Ensure the power cable is connected securely to both the
cradle and to AC power.
Mobile computer is not correctly
seated.
Remove and re-insert the mobile computer into the
cradle, ensuring it is correctly seated.
Spare Battery
Charging LED does
not light when spare
battery is inserted.
Spare battery is not correctly
seated.
Remove and re-insert the spare battery into the charging
slot, ensuring it is correctly seated.
Mobile computer
battery is not
charging.
Mobile computer was removed
from cradle or cradle was
unplugged from AC power too
soon.
Ensure cradle is receiving power. Ensure the mobile
computer is seated correctly. If the mobile computer
battery is fully depleted, it can take up to four hours to
fully recharge a Standard Battery and it can take up to six
hours to fully recharge an Extended Life Battery.
Battery is faulty. Verify that other batteries charge properly. If so, replace
the faulty battery.
The mobile computer is not fully
seated in the cradle.
Remove and re-insert the mobile computer into the
cradle, ensuring it is correctly seated.
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