Troubleshooting - Motorola Symbol DS9808 Product Reference Manual

3 - 2 Symbol DS9808 Product Reference Guide

Troubleshooting

Troubleshooting
Table 3-1
Problem
The aiming pattern does not
appear when pressing the
trigger.
Digital 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
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 IBM 468x and USB IBM hand-held,
IBM table top, and OPOS modes,
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
Hand-Held Decode Aiming Pattern on
page 4-34.
Normal during host reset.
Program the digital scanner to read that
type of bar code. See Chapter 11,
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.