84
4 Troubleshooting
Problem
Possible causes
Possible solutions
Nothing happens when you follow the
operating instructions, or the scanner
displays erratic behavior.
No power to the scanner.
Check the system power. Ensure the power
supply is connected.
Incorrect cables.
Use the original cables.
Connections are loose.
Check for loose cable connections.
Laser comes on, but the scanner does
not decode.
Bar
code
symbol
is
unreadable.
Check the symbol to make sure it is not
defaced. Try scanning test symbols of the
same bar code type.
Scanner is not programmed
for the correct bar code type.
Be sure the scanner is programmed to read the
type of bar code you are scanning.
Distance between scanner
and bar code is incorrect.
Move the scanner closer to or further from the
bar code.
Scanned data is incorrectly displayed
on the host.
Scanner is not programmed to
work with the host. Check
scanner host type parameters
or editing options.
Be sure proper host is selected.
For
RS-232,
ensure
the
scanner’s
communication parameters match the host’s
settings.
For a USB-HID keyboard or a keyboard wedge
configuration,
ensure
the
system
is
programmed for the correct keyboard type and
language, and the CAPS LOCK key is in the
correct state.
Other circumstances.
/
Contact your distributor or the manufactory
support centre.
Summary of Contents for MD29 Series
Page 1: ...MD29xx Barcode Scanner User Manual Version MD29xx_UM_EN_V1 1 3...
Page 2: ......
Page 4: ...ii...
Page 9: ...2 1 3 Decode zone Figure 1 1 High density series Figure 1 2 Long range series...
Page 11: ...4 2 2 Dimensions Figure 2 2 Dimensions of scanner...
Page 12: ...5 2 3 Parts of the scanner Figure 2 3 Exit window Trigger Beeper LED...
