Epson SEIJ98006 manual 17. Pump/ASF Motor Driver Circuit Block Diagram, EPSON Stylus Color

EPSON Stylus Color 900 Revision C

2.3.5 Pump/ASF Motor Driver Circuit

Like for the CR motor and the PF motor, A3957 (IC13, IC14) enables the pump/ASF motor to perform 4W1-2 phase excitation on the hardware basis. Figure 2-17 shows the pump/ASF motor driver circuit block diagram. Among 2 drivers, IC13 and IC14 drives the Phase A and Phase B, respectively.

E 0 5 B 5 9 ( I C 2 )				+ 4+24 2 ++4422
			A 3 9 5 7 ( I C 1 3 )		C N 1 2
6 9		2 0
	g		1 5		1
P h a s e AA SsFeItAt in0		1 3				A S F A
6 8			O U T A
c u r r e n tA Ss igF InAa1l		1 1	2 2		3
6 2
( 1 6 p a tAt Se rFnIsA )2		8	O U T B			A S F - A
6 4
A S F I A 3
6 3		1 0
P h a s e AA SsFpPe Hc AifAie d					2 A S F		B
s ig n a l
					4 A S F - B
			A 3 9 5 7 ( I C 1 4 )
8 1		2 0
A S F I B 0			1 5
P h a s e B s e t t in g		1 3
8 0			O U T A
A S F I B 1		1 1
c u r r e n t s ig7n2a l			2 2
A S F I B 2
( 1 6 p a t t e r n s )		8	O U T B
7 4
A S F I B 3
7 3		1 0
P h a s e BA SsFpPeHc AifBie d
s ig n a l
		R E F
					M 6 2 3 8 3 ( I C 1 7 )
				4 D / A x y

Figure 2-17. Pump/ASF Motor Driver Circuit Block Diagram

Operating Principles Electrical Circuit Operation Principles 71