Printhead Driver Circuit; Figure 2-25. Printhead Driver Circuit Block Diagram - Epson Stylus 1500 Service Manual

Stylus 1500 Service Manual

2.3.2.5 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
59~65
BH1C1/0, BH2C1/0
BH1 D, BH2 D
55
B HL A T
49
B HC L K
56
B H S O
58
XBAL L
VH VC TRO L 82
45~48
CHPWMO, CH2 C
CH2 D1 /0
38
C H L A T
36
C H C L K
37
ICL K
39
C H S O
40
IE N
41~44
CPSID1 ~4
C17 2 MAIN BOARD

Figure 2-25. Printhead Driver Circuit Block Diagram

Rev. A
COMMON DRIVER
N C H G
COMMON DRIVER
Operating Principles
SED6100D (U1)
COM1 -3 6
DOUT63 - 1
LAT
C L K
DOUT6 4 - 2
SI
N C H G
VHV
SED5619D (U1)
COM1 -3
LAT
DO64 -6 1
C L K
DO60 - 1
SI
ID1~ID4
DRIVER CIRCUIT ON CARRIAGE
Ro w A
Ro w B
Not Connected
Magenta
Cy a n
Yellow
2-21