Ier 512C, User Manual

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4) Control Panel Indicator Functions
On/Off
When on, shows that the printer is On Line, and therefore
able to receive from the host computer system the
information needed to print a document.
When off, shows that the printer is in Off Line mode and the
Self Test menus can be accessed.
Error
When on, indicates a mechanical error.
When flashing, indicates an error in reception of the
message from the host computer system.
See paragraph “Operating Faults”.
Reception
When on, indicates that the printer is receiving a message
from the host computer system.
The indicator goes out automatically when document printing
is complete (in On Line mode or in the Self Test menus).
Power
When on, indicates that the printer is switched on.
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On/Off
Error
Reception
Power