3 - 4 DS8178 Digital Scanner 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 5-22
.
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 12, 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.
Move the symbol completely within the field of
view (AIM pattern does NOT define FOV)
Distance between digital scanner
and bar code is incorrect.
Move the scanner closer to or further from the
bar code. See
Decode Ranges on page 2-9
.
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