Chapter 4. Problem Isolation; Problem Isolation - Datalogic QuickScan L QD 2300 Product Reference Manual

This chapter provides troubleshooting information, technical specifications, and signal descrip-
tions (pinouts).

Problem Isolation

Table 3
Table 3. Troubleshooting
Problem
Beeper Indications (Also see
Scanner emits frequent beeps. (USB
host interface only.)
Scanner emits low/high/low beeps.
Scanner emits low/high beeps.
Scanner emits low/high/low beeps.
Scanner emits low/high/low/high beeps.
Scanner emits high/low beeps.
Scanner emits high/high/high/low
beeps.
Scanner emits four long low beeps.
Scanner emits four short high beeps
(USB only).
Product Reference Guide
Problem Isolation
provides problem/remedy information for use in troubleshooting scanner functions.
Possible Causes
LED and Beeper Indications on page 10
The USB bus may put the scanner in a
state where power to the scanner is
cycled on and off more than once.
ADF transmit error.
Invalid ADF rule is detected.
Input error, incorrect bar code or Cancel
bar code was scanned.
The Code 39 buffer was erased or there
was an attempt to clear or transmit an
empty buffer.
Out of host parameter storage space.
Out of memory for ADF rules.
The scanner is buffering Code 39 data.
RS-232 receive error.
A transmission error was detected in a
scanned bar code. The data is ignored.
Scanner has not completed initialization.
Chapter 4
Possible Solutions
)
This is normal and usually happens when
the host cold boots.
Refer to the Advanced Data Formatting Pro-
grammer's Guide for information about ADF
programming.
Scan the correct numeric bar codes within
range for the parameter programmed.
Normal when scanning the Code 39 Buffer-
ing Clear Buffer bar code or upon attempt
to transmit an empty Code 39 buffer.
Default Parameters on page 21
Scan
Reduce the number of ADF rules or the
number of steps in the ADF rules.
Normal.
Normal during host reset. Otherwise, set the
scanner's RS-232 parity to match the host
setting.
This occurs if a unit is not properly config-
ured. Verify programmed options.
Wait several seconds and scan again.
.
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