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Service Manual for OL400e/OL410e/OL410e-PS
Chapter 2 Principles of Operation
Main Controller Board Operation Panel Functions
The operation panel LCD displays the printer's operational status and error messages. The
operation panel is also used to modify the printer menu.
The operation panel is connected to the main controller board through connector CN1 of
the contact switch board and CN5 of the main controller board.
The LCD control driver board is connected to the contact switch board. The connector on
the contact switch board is CN2, and the connector on the control drive board is CN3.
The operation panel is controlled by the CPU of the main controller board. The LSI chip on
the contact switch board is connected to a clock-synchronous serial port of the CPU. This
port controls the switch data input, LED data output, and LCD data. The CPU sends a 2-byte
(16-bit) command to the LSI. Upon receiving a command from the CPU, the LSI returns a
2-byte command response to the CPU.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Summary of Contents for OL400e Series
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