Ricoh C249, Service Manual

Page: 481 / 486

MACHINE LAYOUT
SM 29 C624
Printer
Con
troller
C624
The controller board contains a CPU (QED RM5261) and an ASIC. The ASIC
controls the main memory (SDRAM), ROM interface, IEEE1284 parallel interface,
optionial bus interface for the NIB, and the IC card interface for upgrading firmware.
The IC card interface allows firmware for the controller and NIB to be upgraded.
CONNECTOR
REF.
NAME NO. CONFIGURATION
DESCRIPTION
A Engine Interface CN504 Halfpitch 30 pin To video I/F
B OPTBUS I/F CN507 Halfpitch 80 pin For connecting the NIB
C
IC-Card I/F CN511 JEIDA v4.0 68pin For connecting the IC card
for firmware upgrades
D
IEEE1284 I/F CN509 IEEE1284 parallel
interface To the host computer
5.2 MACHINE LAYOUT
For model #C249
REF. COMPONENT
A Printer Controller Board
B I/F Board - controller side
C Network Interface Board
D I/F Board - MPU side
E Video Interface Board
C624D007.WMF
[A]
[B]
[C]
[D]
[E]