Epson Stylus 1500 - Printhead Driver Circuit

Printhead Driver Circuit
The printhead driver circuit for this printer is composed of the following:
❑ Common driver circuit (trapezoidal drive pulse generation)
❑ Head driver circuit (nozzle control built into the printhead)
The SED6100D 64-dot head driver in the black ink printhead driver circuit is used to selectively
drive the black ink printhead nozzles. Similarly, the SED5619D 60-dot (yellow, magenta, cyan × 20)
head driver in the color ink printhead driver circuit is used to selectively drive the color ink
printhead nozzles.
E05B16 (IC2)
BHV0, BHV5
BH1C1/0, BH2C1/0
BH1D, BH2D
49
COM1-36
SED6100D (U1)
CN7
CN1
LAT
CLK
SI
DOUT63 - 1
DOUT64 - 2
Row A
Row B
55
COM1-3
CN8
CN1
LAT
CLK
SI
DO64-61
DO60 - 1
Magenta
Cyan
Yellow
Not Connected
SED5619D (U1)
NCHG
BHLAT
BHCLK
BHSO
XBALL
NCHG
56
58
59~65
ID1~ID4
CHPWMO, CH2C
CH2D1/0
VHV
VHVCTROL
82
CHLAT
CHCLK
ICLK
CHSO
IEN
45~48
38
36
37
39
40
41~44
C172 MAIN BOARD
DRIVER CIRCUIT ON CARRIAGE
CPSID1~4
COMMON DRIVER
COMMON DRIVER
Figure 2-26. Printhead Driver Circuit Block Diagram
Operating Principles
EPSON Stylus 1500 Service Manual 2-23