Printer Control Board - Ricoh G031 Service Manual

PRINTING

2.1.2 PRINTER CONTROL BOARD

C P U
Printer
Control Board
The printer control board receives the print data from the computer through the
parallel cable or network interface board.
The printer control board contains the CPU (which is a 64-bit RISC processor), the
ROCKY W ASIC, 8 MB of resident DRAM for main memory, and a 8 MB code
ROM.
A SIMM card can be installed for extra DRAM memory and a DIMM card can be
connected for service purposes (firmware upgrade).
The control board controls the following to produce the print image data.
1) IEEE1284 parallel port interface
2) Control panel
3) Edge smoothing and toner saving
4) Engine control board
5) Interfacing with the HDD, NIB, and RS232C board.
G031/G032
Parallel I/F
R O C K Y W
(ASIC)
Resident
D R A M
C o d e
R O M
S I M M
2-2
32-bit Data
A d d r e s s / C o m m a n d
E C B LD Unit
Option Board
N I B
H D D
R S 2 3 2 C
D I M M
G031D503.WMF
SM