Oki C9850 Maintenance Manual page 22

The main control PCB of the 1200dpi-Printer consists of a CPU, RAM, HDD, LSI, EEPROM,
KeyChip, PCI Bus Option and Advanced Interface.
(1) CPU
CPU is Intel CeleronM-1G
(2) RAM
RAM is DDR_DIMM. RAM capacity is 256MB or 512MB.Max capacity is 1GB.
DDR_DIMM used at AS3 are the same with the DIMM used at PX735/736.
(3) HDD
HDD function (store program and font) is same with ASP/AS2 but there's no
compatibility.
(4) Chipset (North/South Bridge LSI)
NorthBridge
SouthBridge
(5) Image Processing LSI(VX500)
AS3 uses VX500 as an Image Processing LSI.
(6) EEPROM
EEPROM stores Printer default settings and etc.
(7) KeyChip
KeyChip is royalty device.
(8) PCI option
MFP board(BY3) is PCI connection option.
(9) Advanced Interface
Standard : USB(USB2.0) I/F
Additional : MFP I/F
43627911TH Rev. 3
:Intel_854GME. This chip has I/F with CPU and Memory.
:Intel 6300ESB. This chip controls all external I/F.
Ethernet(10/100/1000 base. LAN is directly mounted on AS3 board)
Oki Data CONFIDENTIAL
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