Boards; Fcu - Ricoh B156 Service Manual

BOARDS

5.2 BOARDS

5.2.1 FCU

BACKUP
FCUIF
PCI BUS
FACE3
The FCU (Facsimile Control Unit) controls fax communications, the video interface
to the base copier's engine, and all the fax options.
FACE3 (Fax Application Control Engine)
• CPU
• Data compression and reconstruction (DCR)
• DMA control
• Clock generation
• DRAM backup control
Modem (FAME)
• V.34, V33, V17, V.29, V.27ter, V.21, and V.8
B750
CÓPIA NÃO CONTROLADA
SAF SDRAM
(16MB)
SRAM FROM
(256kB) (3MB)
BACKUP
& RESET
MBU
CCUIF
G3
CÓPIA NÃO CONTROLADA
DIMM
(32 MB)
DMA BUS
CPU BUS
v.34
MODEM
Speaker
Drive
CCUDRV
G3
Speaker
116
10 February 2005
FCU
Line
NCU
Circuit
TEL
B750D502.WMF
SM