Pcbs; Fcu - Ricoh Aficio FX10 Service Manual

DETAILED SECTION DESCRIPTIONS

PCBs

2.4. PCBs

2.4.1. FCU

Bi-Centronics
(Parallel)
PC
Optional RS422 Board
Mac
Localtalk
(Serial)
The FCU (Facsimile Control Unit) board contains the FCIP2 (Facsimile Con-
trol and Image Processor), DRAM, SRAM, System ROM, and video
processing memory, and it controls the entire system.
1. FCIP2 (Facsimile Controller and Image Processor)
•
CPU
•
Data compression and reconstruction
•
Digital image processor
•
Laser interface
•
DMA controller
•
Clock generation
•
Stepper motor control
•
DRAM backup control
•
Fusing lamp control
2. ROM
•
512 kB (4 Mbit) flash ROM for system software storage.
•
128 kB (1 Mbit) mask ROM for LCD and report font and motor tables
storage.
F C U
D6002
Z 8 5 2 3 0
M a s k
D R A M
R O M
S Y S T E M B U S
Flash
D R A M
S R A M
R O M
AFE
NCU
D9001LF
E X C 1
FCIP2
Modem
2-48
June 10th, 1997
Printer
EXIO
Scanner
Operation
Panel
H523D541.wmf