Ricoh Aficio 270 - Block Diagram

Printer
Controller
B306
OVERALL MACHINE INFORMATION
SM 1-5 A265/A267
1.4 BLOCK DIAGRAM
The controller board contains a CPU (NEC VR4310) and an ASIC (Rocky-R). The
ASIC controls the main memory (SDRAM), engine interface, ROM interface,
IEEE1284 parallel interface, two option bus interfaces for the NIB and HDD, and an
IC card interface for upgrading firmware.
There is one optional memory socket that can have either a 32MB or a 64MB
SDRAM DIMM module to increase RAM capacity and enable RAM collation. With
the 64MB SDRAM module, the RAM capacity is increased to 80MB. There is
another memory socket for the optional PS3 DIMM.
The two option bus interfaces allow the user to install an Ethernet NIB and a hard
disk drive (the hard disk allows the Proof Print, Disk Collation, and font and form
download features).
The flash memory card interface allows the firmware for the controller, PostScript,
and NIB to be updated.
Controller
CPU
NEC VR4310
167MHz
ASIC
Rocky-R
DATA/ADDRESS BUS
SDRAM
(16MB)
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Code ROM
(4MB Flash)
SDRAM DIMM
(Option)
32MB or 64MB
Font ROM
(1MB Mask)
EEPROM
(6kB)
Option Bus I/F
Option Bus I/F
Flash
Memory
Card I/F
Mother Board
BiCU
PS3 DIMM
(Option)
8MB Flash
Ethernet NIB
(Option)
10BaseT/100BaseTX
HDD
(Option)
1.6GB
IEEE1284 Port
(ECP)
Parallel I/F
Controller
B306V502.WMF