Rotor – Epson 440 User Manual

Page 77

background image

EPSON Stylus Color 440/640/740

Revision A

Chapter 2

Operating Principles

77

Figure 2-37. PF (Pump) Motor Drive Circuit for Stylus Color 740

+5

M6252(IC16)

-

+

7

6

5

C90A05
(IC1)

112

DA1

D0

D1

D2

PHASE

REF

PFD

A3956(IC13)

OUTA

OUTB

VBB

VCC

Current
Detection

D0

D1

D2

PHASE

REF

PFD

A3956(IC13)

OUTA

OUTB

VBB

VCC

4

5

6

7

E05B588(IC2)

PFIB0

PFIB1

PFIB2

PFPHAB

PFIA0

PFIA1

PFIA2

PFPHAA

8

9

10

11

14

9

8

7

2

1

14

9

8

7

2

1

10

15

Rotor

A

/A

B

/B

1

3

2

4

CN8

10

15