User manual

Maintenance & Technical Specifications 12 - 3
Troubleshooting
Table 12-1 Troubleshooting
Problem Possible Causes Possible Solutions
The aiming dot does not appear
when touching the trigger.
No power to the imager. Connect the imager to a powered
USB host.
Imager is disabled. For USB IBM hand-held, IBM table
top, and OPOS modes, enable the
imager via the host interface.
Aiming dot is disabled. Enable the aiming dot. See
Hand-Held Decode Aiming Pattern
on page 4-18
.
Imager emits short low/short
medium/short high beep
sequence (power-up beep
sequence) more than once.
The USB bus may put the imager in
a state where power to the imager is
cycled on and off more than once.
Normal during host reset.
Imager emits aiming dot, but
does not decode the bar code.
Imager is not programmed for the
correct bar code type.
Program the imager to read that type
of bar code. See
Chapter 6,
Symbologies
.
Bar code symbol is unreadable. Scan test symbols of the same bar
code type to determine if the bar
code is defaced.
The symbol is out of the aiming dot
area.
Move the aiming dot over the symbol.
Imager emits 4 short high beeps
during decode attempt.
Imager has not completed USB
initialization.
Wait several seconds and scan
again.
Imager decodes bar code, but
does not transmit the data to the
host.
If the imager emits 4 long low
beeps, a transmission error
occurred.
Set the imager's communication
parameters to match the host's
setting.
If the imager emits 5 low beeps, a
conversion or format error occurred.
Configure the imager's conversion
parameters properly.
If the imager emits low/high/low
beeps, it detected an invalid ADF
rule.
Program the correct ADF rules. Refer
to the Advanced Data Formatting
Programmer Guide.
Host displays scanned data
incorrectly.
Imager is not programmed to work
with the host.
Program the proper editing options
(e.g., UPC-E to UPC-A Conversion).