Epson STYLUS 3000 Service Manual

EPSON Stylus COLOR 3000
Rev. A
2-21
2.3.2.4 PF Motor Driver Circuit
The  motor for this printer operates the following:
 Paper loading
 Paper feeding
The gate array E05B33 (IC6) outputs the phase drive control signals (PFAPH and PFBPH), phase data
signal (PFA0/1 and PPFB1/0) and voltage reference data (PFV) to the driver IC UDN2917EB (IC17). The
driver IC then controls the phase current based on the voltage reference data. This sequence enables the
micro step with a minimum of 1/720 inch at 2-2 phase.
B
A
E05B33
(IC6)
UDN2917EB
(IC17)
PF Motor
PFA0
PFA1
PFB0
PFB1
PFAPH
PFBPH
PF A
PF_A
PF B
PF_B
A
B
I10
I11
I20
I21
PH1
PH2
PFV FREF1/2
Figure 2-19. PF Motor Driver Circuit Block Diagram

Epson STYLUS 3000 Specifications

General

Brand	Epson
Model	STYLUS 3000
Category	Printer
Language	English