Function Of Circuit Board - Minolta Di251f Service Manual

3.

FUNCTION OF CIRCUIT BOARD

Name
This board is a micro program control circuit that forms the nucleus of the
external 32 bit RISC processor possessing software circuit controls, read-
ing station controls, recording controls, structural controls, operating con-
MFB2
trols, reading controls, CCD driver circuit, CCD output image process
circuit, binary image process circuit, motor controls circuit and sensor I/F
circuit.
This board performs V.34 facsimile communications, loaded with a V.34
modem.
It also possesses clock IC circuit, SRAM circuit for storing different types
FAX1
of registration information, battery back-up circuit for file memory, pro-
gram ROM (mask ROM: 16MB) and various types of communication sys-
tem options.
PC printer functions are achieved via connection of this PKG to the MFB2
CEN board.
It also possesses a I/F for network LAN board (FPLAN) use.
NWROM2 This board has 12 or 16MB capacity used as a program ROM.
EMU This board has 12MB capacity used as working memory.
This board has 32MB capacity used as working memory.
NWM
Excluded from specifications with EMU.
This board is a line controller to detect line signals such as line connec-
NCU
tion and ringer.
A network function is achieved via connection of this board to a CEN
FPLAN
board.
Description
M-5