Datalogic QuickScan L QD 2300, Product Reference Manual

Page: 21 / 192

Product Reference Guide
15
Chapter 4
Problem Isolation
This chapter provides troubleshooting information, technical specifications, and signal descrip-
tions (pinouts).
Problem Isolation
Table 3 provides problem/remedy information for use in troubleshooting scanner functions.
Table 3. Troubleshooting
Problem Possible Causes Possible Solutions
Beeper Indications (Also see
LED and Beeper Indications on page 10
)
Scanner emits frequent beeps. (USB
host interface only.)
The USB bus may put the scanner in a
state where power to the scanner is
cycled on and off more than once.
This is normal and usually happens when
the host cold boots.
Scanner emits low/high/low beeps.
ADF transmit error. Refer to the Advanced Data Formatting Pro-
grammer’s Guide for information about ADF
programming.
Invalid ADF rule is detected.
Scanner emits low/high beeps.
Input error, incorrect bar code or Cancel
bar code was scanned.
Scan the correct numeric bar codes within
range for the parameter programmed.
Scanner emits low/high/low beeps.
The Code 39 buffer was erased or there
was an attempt to clear or transmit an
empty buffer. Normal when scanning the Code 39 Buffer-
ing
Clear Buffer bar code or upon attempt
to transmit an empty Code 39 buffer.
Scanner emits low/high/low/high beeps.
Out of host parameter storage space. Scan
Default Parameters on page 21
.
Out of memory for ADF rules.
Reduce the number of ADF rules or the
number of steps in the ADF rules.
Scanner emits high/low beeps. The scanner is buffering Code 39 data. Normal.
Scanner emits high/high/high/low
beeps.
RS-232 receive error.
Normal during host reset. Otherwise, set the
scanner's RS-232 parity to match the host
setting.
Scanner emits four long low beeps.
A transmission error was detected in a
scanned bar code. The data is ignored. This occurs if a unit is not properly config-
ured. Verify programmed options.
Scanner emits four short high beeps
(USB only).
Scanner has not completed initialization. Wait several seconds and scan again.