Lexmark C910 User's Guide - Page 139
Solving display problems
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42 Solving display problems If the suggested corrective action does not fix the problem, call your service representative. Problem Operator panel displays only diamonds or is blank. Menu settings changed from the operator panel have no effect. Action • 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 these messages do not appear, turn the printer off and call the Lexmark Customer Support Center. 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. 137
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