Epson 890N - FX B/W Dot-matrix Printer Service Manual page 107

EPSON FX-890/2190
Printhead (CN15, CN16)
R side (CN15: upper connector)
Table 7-9. Connector Pin Assignment - CN15
Pin No. I/O Signal Name
1 O HEAD3
2 – –
3 O HEAD15
4 – C5
5 O HEAD2
6 – C6
7 O HEAD5
8 O HEAD16
9 O HEAD11
10 – C7
11 O HEAD17
12 – C8
13 – –
14 O HEAD14
15 O HEAD4
16 O HEAD8
Appendix
Function
#3 Head Data
Not used
#15 Head Data
#2, 5, 11 Common
#2 Head Data
#3, 15 Common
#5 Head Data
#16 Head Data
#11 Head Data
#16, 17 Common
#17 Head Data
#4, 8, 14 Common
Not used
#14 Head Data
#4 Head Data
#8 Head Data
Connector Summary
F side (CN16: lower connector)
Table 7-10. Connector Pin Assignment - CN16
Pin No. I/O Signal Name
1 – –
2 O HEAD1
3 O HEAD9
4 O HEAD13
5 O HEAD7
6 – C1
7 – –
8 O HEAD18
9 – C2
10 O HEAD12
11 – C3
12 – C4
13 – –
14 O HEAD6
15 O HEAD10
16 I TH
17 I TH
Revision B
Function
Not used
#1 Head Data
#9 Head Data
#13 Head Data
#7 Head Data
#1, 7, 13 Common
Not used
#18 Head Data
#9 Common
#12 Head Data
#10, 18 Common
#6, 12 Common
Not used
#6 Head Data
#10 Head Data
Thermistor
Thermistor
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