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Operation Description
2 - 4
OKIPAGE 16n
Service Manual, P/N 59274401
Memory area
Use
Memory capacity setting
MENU
Expansion RAM
System area
Fixed
Fixed
Raster buffer
Enable
Expandable
Receive buffer
Enable
Expandable
Page buffer
–
Expandable
DLL/macro buffer
–
Expandable
Font cache buffer
Enable
Expandable
(3) DRAM's
2-Megabyte DRAM (4 Mbit DRAM x 4) is mounted as resident memory to be used for storing
the program and providing various buffers. This DRAM is expandable up to 66 Mbytes by
adding expansion memory (SIMMs). This DRAM provides the areas shown in the following
table.
(4) EEPROM
The EEPROM has a 1-kbit capacity and stores the following data.
•
Menu data
•
Various counter data (page counter, drum counter, fuser counter, etc.)
•
Adjustment parameters (LED head drive time, print start position, etc.)
(5) LSI (MBCE31701-040FP-BND)
This LSI is used as a peripheral device of the CPU and performs smoothing compensation
(OST) of print image data. In addition, it transfers serially bit image data for each dot line to
the LED head.
(6) Host interface
This printer has the following interfaces to the host.
•
Centronics bidirectional parallel interface
•
OKI HSP interface (Option)
•
LocalTalk interface (Option - PostScript Version)
The single effective interface or the automatic interface select mode can be selected using
the menu. If the busy state of the printer continues for a long time period, the buffer near-
full control releases the busy status at constant intervals even if the host side is busy so not
to cause the interface time-out at the host side.
Working area used for the program
Stores converted bit image data
Stores temporarily the data received
from the host interface
Adds print information to the analyzed
receive data and stores the resulted
data.
Stores soft fonts and macro data.
Stores bit map fonts generated by the
font rasterizer based on scalable font
information
Содержание Okipage 16n
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Страница 165: ...Wiring Diagrams 7 2 OKIPAGE 16n Service Manual P N 59274401 7 2 PCB Layout 1 Main board BOARD COM ...
Страница 166: ...Wiring Diagrams 7 3 OKIPAGE 16n Service Manual P N 59274401 2 Power Supply board 3 Driver board AOLC PCB ...
Страница 167: ...Wiring Diagrams 7 4 OKIPAGE 16n Service Manual P N 59274401 4 PostScript board BOARD PSBA OKIPAGE16n PS only ...
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Страница 238: ...OKIPAGE 16n Service Manual Part Number 59274401 Printed in the USA ...