Main Pcb - Olivetti d-Copia 300 Service Manual

2-3-2 Main PCB

Operation unit
CPU
U26
Main CPU
U8
Main CPU
Main PCB
Operation unit
XIO
U42
Operation
CPU
FLASH
U29, 34
SDRAM
U25
Main CPU Backup
FLASH FLASH
U7 U9
SRAM
U11, 56
Detaction signal input
Control signal output
Figure 2-3-3 Main PCB block diagram
Scan signal
Detection signal input
LCD
LCD display data
controller
U24
Address bus
Data bus
A/D
converter
U17,18
MIP
U21
VTC
U22
XIO
U14,15
Control signal output
BUF
Fax transmission/
reception data
BUF
Analog image data
Odd
S/H IC
Even
U16
Printer data
Printing data
BUF
Detection signal input
Driver
Driver
2FD/2FF/2FG
Operation
unit PCB
LCD
Compact
Flash
Fax board*
CCD PCB
Printer
board*
Scanner
drive PCB
LSU
High-voltage
transformer PCB
Paper feed unit
Drum unit
Developing unit
Fixing unit
DP*
Job separator*
Built-in finisher*
Booklet stitcher*
3000-sheet finisher*
1000-sheet finisher*
*Optional.
2-3-5