Oki LP-1040 Maintenance Manual page 726

A.2 ARC1/ARC2 Board LED Display
The following section explains how to read the LED display on the ARC1/ARC2 board.
The status of the LED is represented by the following icons.
○: On
☆: Flashing
●: Off
(1) LED display immediately after turning On thep power
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○●○●○●○●
(2) LED display during standard operation
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●●●●●●●☆
A.3 ARC1/ARC2 Circuit Board's Reset Switch (SW10)
Pressing reset switch SW10 resets the ARC1/ARC2 board circuit and also restarts the
firmware.
Normally this function should not be used. For the reset operation, switch the Printer power off,
then on.
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Appendix Circuit Board Configuration and Display
A-3