Appendix F - Troubleshooting; Table A-2 Troubleshooting - Microscan MS-7100 User Manual

Appendix F — Troubleshooting
The MS-7100/7180 scanner when used correctly should produce good
reads. If not, table A-2
with setting up and using the scanner. If you are unable to locate or correct
the problem, call your Microscan representative.
Do not look directly into laser aperture.
Laser light can be hazardous to your eyes.

Table A-2 Troubleshooting

Problem Possible Cause
Menus do not dis- Host cable defective or not
play when configu- wired properly
ration command is
Wrong configuration com-
sent
mand (or lower case d)
entered
Scanner configuration set-
tings do not match host's
Getting only Host and scanner baud rates
"hieroglyphics" or or parity not matched
unintelligible code
Menus display but Wrong label type
getting 0% read
(different label type being
rate when in read
scanned than that enabled in
rate test (<C>) or
firmware)
Calibration Setup
(<t>)
Incorrect label range or label
too long to be totally covered
by scan beam.
Poor label quality
Excessive ambient light, sun-
light, or strobes
Object detector or another
scanner interfering with reads
MS-7100/7180 Industrial Scanner User's Manual
lists some of the more common problems associated
WARNING
Solution
Check cable connections and wiring. (See
page 1-8.)
Verify that a <D> serial command (with an
upper case D) is being entered.
Reset scanner to default and/or match host
settings with scanner's.
Check baud rates and parity and change to
match host's settings.
Check label configuration settings to be cer-
tain that they match the label type being
scanned. If label type is in doubt, enable Auto-
discriminate All Codes (<P> command).
Ensure that fixed length and check sums, if
enabled, are set correctly.
See range data in Step 2, "Verify Read
Range," on page 1-3. Reposition label and
check the read rate (<t> or <C> commands).
Try a label that is known to be readable.
Shield the bar code and/or scan head to verify
that excessive light is not the problem.
Remedy by remounting, eliminating interfer-
ence, or shielding.
Many object detectors emit pulsed infrared
signals that can seriously degrade the read
rate if they shine into the scanner or onto the
bar code label when it is being read.
Troubleshooting
A-11