Troubleshooting - Motorola Symbol DS3407 Reference Manual

3 - 2 Symbol DS3407 Product Reference Guide

Troubleshooting

Troubleshooting
Table 3-1
Problem
The aiming pattern does not appear
when pressing the trigger.
Scanner emits short low/short
medium/short high beep sequence
(power-up beep sequence) more
than once.
Digital scanner emits aiming pattern,
but does not decode the bar code.
Digital scanner emits 4 short high
beeps during decode attempt.
Possible Causes
No power to the digital scanner.
Incorrect host interface cable is
used.
Interface/power cables are loose.
Digital scanner is disabled.
If using RS-232 Nixdorf B mode,
CTS is not asserted.
Aiming pattern is disabled.
The USB bus may put the digital
scanner in a state where power to
the digital scanner is cycled on
and off more than once.
Digital scanner is not programmed
for the correct bar code type.
Bar code symbol is unreadable.
The symbol is not completely
inside aiming pattern.
Digital scanner has not completed
USB initialization.
Possible Solutions
If the configuration requires a power
supply, re-connect the power supply.
Connect the correct host interface
cable.
Re-connect cables.
For Synapse or IBM 468x mode,
enable the digital scanner via the host
interface. Otherwise, see the technical
person in charge of scanning.
Assert CTS line.
Enable the aiming pattern. See
Decode Aiming Pattern on page
Normal during host reset.
Program the digital scanner to read
that type of bar code. See Chapter 10,
Symbologies.
Scan test symbols of the same bar
code type to determine if the bar code
is defaced.
Move the symbol completely within the
aiming pattern.
Wait several seconds and scan again.
5-6.