Download the ST9340 Printer Reference Guide

Solving display problems
Problem Action
Operator panel displays
only diamonds or is blank.
Menu settings changed
from the operator panel
have no effect.
Solving printing problems
Problem Action
Job did not print or incorrect
characters printed.
Solving display problems
• Turn the printer off, wait about 10 seconds, and turn the printer on.
• Performing Self Test appears on the operator panel. When the
test is completed, Ready is displayed.
If the messages do not appear, turn the printer off and contact the place
you bought your printer.
Settings in the software application, the printer driver, or the printer
utilities are overriding the settings made from the operator panel.
• Change the menu settings from the printer driver, the printer utilities,
or the software application instead of the operator panel.
• Disable the settings in the printer driver, the printer utilities, or the
software application so you can change settings from the operator
panel.
Make sure Ready appears on the operator panel before you send a
job to print. Press Go to return to Ready.
Make sure there is print media loaded in the printer. Press Go to
return to Ready.
Verify that the printer is using the correct printer language.
Verify that you are using the correct printer driver.
Make sure the parallel, serial, Ethernet, or USB cable is firmly
plugged in at the back of the printer. Make sure you are using the
correct cable. Use IEEE 1284-compliant parallel cable. If you use
RS-232 Serial, verify that a null modem cable is used.
If the printer is connected through a switch box, try a direct
connection.
Verify that the correct print media size is selected through the
operator panel, in the printer driver, or in the software application.
Make sure PCL SmartSwitch and PS SmartSwitch are set to On.
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