Epson Stylus Color 1520 Service Manual

EPSON Stylus COLOR 1520
Rev. A
2-2
4
2.3.2.5 Printhead Driver Circuit
This printer has 2 separate printhead driver circuits:for the black head and for the color head. Each
circuit has the common voltage driver circuit attached to the MAIN board and the nozzle selection circuit
attached to the head driver circuit board. The common driver circuits for the both black and color heads
are composed of the hybrid ICs (IC19) and the terminal transistors. 128-bit transfer gate array IC
IR2C72C is used for the black head nozzle selection circuit and 128-bit transfer gate array IC IR2C72C
(for cyan and yellow) and 64-bit transfer gate array IC IR2C73C (for magenta) are used for the color
head nozzle selection circuit. Printing data is separated into the common voltage signal and the nozzle
selection signal at the gate array E05B33 (IC6) and is then transferred to the corresponding circuit.
Figure 2-24 shows the printhead driver circuit block diagram.
E05B33 (IC6)
BCHG,BKC
BND0/1,BMD0/1
SBDATA
COM
IR2C72C
CN13
LAT
CLK
SI
COM
CN12
LAT
CLK
Magenta
Cyan
Yellow
NCHG
BHCLK
BHLAT
BA/BHDATA
BHNCHG
LAT
CLK
S2
IR2C72C
IR2C73C
VHPR
VHV
CCHG,CKC
CND1/2,CMD1/2
SCDATA
CHCLK
CHLAT
YHDATA
CHDATA
MHDATA
CHNCHG
SCLK,SSTB,SCLR
S3
S1
COM
NCHG
VHV
VHV
Common Driver
Black Head
Common Driver
C211 MAIN Board
Head Driver Circuit
Figure 2-24. Prinrhead Driver Circuit 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