A.2.09 Rs232-C Serial Interface (Lxhi) - Rev A, B, C, And D - OKIDATA ML320 Service Manual

A.2.09 RS232-C Serial Interface (LXHI) - Rev A, B, C, and D

Function
This board permits the serial transport of data to and from the printer.
Firmware
ROM
Version 1Q8:
Version 2:
RAM
Versions 1 and 28 kilobytes, Static. Is the Message Buffer
Processor
Version 1Q3M80C31F
Version 2Q3M80C51F
Fuses
NONE
Jumpers
Version 1SP1 Side AQ8 has ROM installed
Version 2SP1 Side BCPU Masked ROM is utilized
Sensors
NONE
Switches
NONE
Test Points
NONE
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
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1 megabyte ROM. Contains the serial interface control program.
None
Service Guide ML320/ML321
Chapter A Reference Charts
Page: 127