Epson STYLUS Scan 2000 Service Manual page 54

EPSON Stylus Scan 2000
CN3
USB
USB
hub
MAIN Board
Operating Principles
IC9
1284 Transceiver
IC17
8bit data
BUS
1284
PSB/PSE Board
Figure 2-22. B101 Main Board Block Diagram
Electrical Circuit Operating Principles
1284 I/F
CN1
System & Scan-
ner Block
(See the B101 MAIN
Board 2 schematic in
Chapter 7)
Buttons
LED/LCD
Printer Block
(See the B101 MAIN
Board 1 schematic in
Chapter 7)
CN10
CN2
Panel
Unit
Scanner
Mech.
Printer
Mech.
Revision A
54