Epson Stylus Color 1520 Service Manual

EPSON Stylus COLOR 1520
Rev. A
2-2
2
2.3.2.3 CR Motor Driver Circuits
The CR motor driver IC SLA7043M (IC15) sends motor phase data using the serial data (XCRCLK,
XCRSTB, CRASERI, CRBSERI) and voltage reference data (CRV) from the gate array E05B34 to the
driver to control the phase current in the driver. The data output from the phase A and phase B
(CRASERI, CRBSERI) are transferred synchronizing with the clock signal (XCRCLK). Then the data is
read at the driver IC by the strobe signal (XCRSTB). This sequence enables the micro step with a
minimum of 0.026 mm pulse driven at 2W1-2 phase excitation. The hold signal (CRHLD) also drives 2
phases to place the CR to the home position and to the cartridge change position. The Figure 2-22 shows
the CR motor driver circuit block diagram.
GA
E05B34
(IC5)
PF Motor Drive IC
SLA7043M
(IC17)
B
A
PF Motor
REFA
REFB
3
14
80
101
102
CRV
CR A
CR_A
CR B
CR_B
A
B
11
18
5
16
2
+5V
CLKA
CLKB
STBA
STBB
13
XCRCLK
81
XCRSTB
DATAA
DATAB
8
1
CRCOM
+42V
6
17
From CRV0
to CRV6
CRASERI
CRBSERI
Figure 2-22. CR Motor Block Diagram

Epson Stylus Color 1520 Specifications

General

Color	Yes
Maximum resolution	600 x 1200 DPI
Print speed (black, normal quality, A4/US Letter)	- ppm
Maximum input capacity	100 sheets
Envelopes sizes	10, C5, DL
Standard media sizes	4\
Paper tray media types	Envelopes, Labels, Plain paper
Non-ISO print media sizes	Legal
ISO A-series sizes (A0...A9)	A4
ISO B-series sizes (B0...B9)	B5
Power requirements	120V AC, 50/60 Hz
Printing noise level	45 dB
Maximum operating temperature range (T-T)	-20 - 60 °C
Market positioning	Home & office