EPSON Stylus Color 900
Revision C
Operating Principles
Electrical Circuit Operation Principles
71
2.3.5 Pump/ASF Motor Driver Circuit
Like for the CR motor and the PF motor, A3957 (IC13, IC14) enables
the pump/ASF motor to perform 4W1-2 phase excitation on the
hardware basis. Figure 2-17 shows the pump/ASF motor driver circuit
block diagram. Among 2 drivers, IC13 and IC14 drives the Phase A and
Phase B, respectively.
Figure 2-17. Pump/ASF Motor Driver Circuit Block Diagram
+ 4 2 + 4 2 + 4 2 + 4 2
C N 1 2
1
3
2
4
A 3 9 5 7 ( I C 1 3 )
1 5
2 2
A 3 9 5 7 ( I C 1 4 )
1 5
2 2
R E F
M 6 2 3 8 3 ( I C 1 7 )
D / A x y
4
2 0
1 3
1 1
8
1 0
2 0
1 3
1 1
8
1 0
E 0 5 B 5 9 ( I C 2 )
6 9
6 8
6 2
6 4
6 3
8 1
8 0
7 2
7 4
7 3
A S F I A 0
A S F I A 1
A S F I A 2
A S F I A 3
A S F P H A A
A S F I B 0
A S F I B 1
A S F I B 2
A S F I B 3
A S F P H A B
A S F A
A S F - A
A S F B
A S F - B
P h a s e A s p e c i f i e d
s i g n a l
P h a s e B s p e c i f i e d
s i g n a l
P h a s e B s e t t i n g
c u r r e n t s i g n a l
( 1 6 p a t t e r n s )
P h a s e A s e t t i n g
c u r r e n t s i g n a l
( 1 6 p a t t e r n s )
O U T A
O U T B
O U T A
O U T B
Summary of Contents for Stylus Color 900
Page 1: ...EPSONStylusColor900 RevisionC Color ink jet printer SEIJ98006 ...
Page 8: ...Component Layout 180 Parts List 184 Exploded Diagrams 187 Circuit Diagrams 195 ...
Page 9: ... PRODUCTDESCRIPTION ...
Page 43: ... OPERATINGPRINCIPLES ...
Page 78: ... TROUBLESHOOTING ...
Page 101: ... DISASSEMBLYANDASSEMBLY ...
Page 130: ... ADJUSTMENT ...
Page 161: ... MAINTENANCE ...
Page 171: ... APPENDIX ...
Page 183: ...EPSON Stylus Color 900 Revision c Appendix Component Layout 183 Figure 7 6 C265 PNL Board ...
Page 194: ...06 03 01 02 for S E ASIA 03 03 05 03 04 EPSON STYLUS COLOR 900 No 7 10056 Rev 01 ...
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