Specifications

3 - 2 Symbol DS9808 Product Reference Guide
Troubleshooting
Table 3-1 Troubleshooting
Problem Possible Causes Possible Solutions
The aiming pattern does not
appear when pressing the
trigger.
No power to the digital scanner. If the configuration requires a power
supply, re-connect the power supply.
Incorrect host interface cable is used. Connect the correct host interface
cable.
Interface/power cables are loose. Re-connect cables.
Digital scanner is disabled. 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.
If using RS-232 Nixdorf B mode, CTS
is not asserted.
Assert CTS line.
Aiming pattern is disabled. Enable the aiming pattern. See
Hand-Held Decode Aiming Pattern on
page 4-30
.
Digital scanner emits short
low/short medium/short high
beep sequence (power-up beep
sequence) more than once.
The USB bus may put the digital
scanner in a state where power to the
scanner is cycled on and off more than
once.
Normal during host reset.
Digital scanner emits aiming
pattern, but does not decode the
bar code.
Digital scanner is not programmed for
the correct bar code type.
Program the digital scanner to read that
type of bar code. See
Chapter 10,
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 not completely inside
aiming pattern.
Move the symbol completely within the
aiming pattern.
Digital scanner emits 4 short
high beeps during decode
attempt.
Digital scanner has not completed
USB initialization.
Wait several seconds and scan again.