C256 Main (For Stylus Color 640) - Epson Stylus Color 660 Service Manual

EPSON Stylus Color 440/640/740

2.2.3 C256 Main (for Stylus Color 640)

Various DC voltage generated on the C206 PSB/PSE board is added
various signals in order to drive the printer function on the C256 main
board, and the drive of CR/PF (Pump) motor and printing head is
performed. Following figure shows the circuit diagram for Stylus Color
640.
Chapter 2 Operating Principles
M-ROM
(IC6)
Head
P-ROM D-RAM
(IC3) (IC5)
Address
Data
TPM95C061
E05B43
(IC1)
(IC2)
Address
Data
Transceiver
(IC16)
CN2 Serial
Figure 2-18. C256 Main Board Block for Stylus Color 640
CN8 HD FFC
CR1
Batt1
Q7&Q9
CN1 Parallel
Timer
Counter
Common
(IC10)
Driver
(IC7)
EEPROM
Reset IC
(IC11)
(IC9)
CN3
CN11
CN5
CN4
HP Sensor
PE Sensor
CR Motor
PF Motor
CN6
CN7
Motor
Motor
Driver
Driver
(IC15)
(IC14)
C206 PNL
ASF Sensor
Revision A
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