Rice Lake Okidata 320-390-420 Turbo - Service Guide - Manual (Page 140)

Page: 64
Service Guide ML320/321Turbo
Chapter C Software Diagnostics and Adjustments
2.2.1 Operation at power on
After power is turned on, an RST OUT signal is sent from the printer control board to reset the printer.
When the reset is canceled, the 80C51 CPU performs initialization. Initialization consists of setting the
80C51 timer and setting the serial mode.
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