2-36 Service Manual
4500–E220/E321/E323
Operator panel
The operator panel consists of six indicator lights and two buttons.
Note: Traditional printer settings such as paper source, paper size,
and orientation may not be selected or modified using the
operator panel with the exception that U.S. versus non–U.S.
may be chosen in the diagnostic mode. Users must either
utilize an application print driver and/or the printer toolkit to
modify settings.
The operator panel may be used for:
• Determining printer status (See “Status information light
patterns ” on page 2-38 for more information.)
• Reviewing printer settings (See “Power–On Self Test (POST) ”
on page 2-60 for more information.)
• Changing printer settings (See “Power–on operations ” on
page 2-59 for more information.)
• Utilizing diagnostic tools (See “Power–on operations ” on
page 2-59 for more information.)
• Obtaining information about printer service errors (See
“Service error codes ” on page 2-45 for more information.)
Error
Paper Jam
Load Paper
Toner Low
Ready/Data
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