Epson Stylus Color 740 Service Manual

EPSON Stylus COLOR 440, 640, and 740 Chapter 2 Operating Principles
51
2.2.2 Main Circuit Board
The main board processes all incomin
g
data and translates it into
control si
g
nals used to operate the printer mechanism.
The St
y
lus COLOR 440 uses one of two main boards: the C206
MAIN-B or the C255 MAIN.
(
The C255 MAIN will eventuall
y
replace the
C206 MAIN-B.
)
In addition, the St
y
lus COLOR 640 uses the C256
MAIN and the St
y
lus COLOR 740 uses the C257 MAIN.
Figure 2-17. C206 MAIN-B, C255 MAIN Board Block Diagram for Stylus COLOR 440
TPM95C061
(IC1)
P-ROM
(IC3)
Address
Data
Address
Data
Reset IC
(IC9)
CR1
Timer
Counter
(IC5)
Batt1
EEPROM
(IC11)
CN1 Parallel
Common
Driver
(IC6)
Q7&Q9
Head
CN8 HD FFC
Motor
Driver
(IC14)
Motor
Driver
(IC15)
PF Motor
CR Motor
CN6
CN7
C206 PNL
CN3
CN11
ASF Sensor
CN5
HP Sensor
CN4
PE Sensor
E05B44
(IC2)
D-RAM
(IC4)

Epson Stylus Color 740 Specifications

General

Brand	Epson
Model	Stylus Color 740
Category	Printer
Language	English