Epson FX-870 - Page 157

Reference Materials
I W. l/O Signal Name Function
1 - +5 +5 VDC
2 0 READY READY LED
3. 0 STAT STAT LED
( Not equipped)
4 0 FONT FONT LED
5 0 COND ‘CONDENSED LED
6 I PAUSE
PAUSE Button
7 I
FONT FONT Button
8 I PFEED
PAPER FEED Button
9 I OPERA
OPERATE Button
10 - GND Signal Ground
7-4
Epson FX-870/1170
Table 7-8. CNS, Printhead
Table 7-11. CN13, CarA& Motor
(CO94 MAIN Board Assembly)
(CO94 MAlN Board Assembly)
So. l/O Signal Name Function
1 0 HD2 Head Data 2
2 0 c246 Head Drive Common
3 0 HD6 Head Data 6
4 0 HD8 Head Data 8
5 0 HD4 Head Data 4
6 0 HD9 Head Data 9
7 I
TMP Head Temperature
8 0 c789 Head Drive Common
9 0 TMP Head Temperature
10 0 HDl Head Data 1
11 0 HD3 Head Data 3
12 0 HD5 Head Data 5
13 0 HD7 Head Data 7
14 0 Cl35 Head Driie Common
Table 7-9. CNO, Rear PE Sensor
(CO94 MAIN Board Assembly)
No. l/O Signal Name Function
1 - GND Signal Ground
2 I PER Rear Paper End
3 I LED
Paper End LED
Table 7-10. CN12, Control Panel
(CO94 MAIN Board Assembly)
No. l/O Signal Name
Functlon
I
I1 I
I
01 &A
I
1 CR Motor Phase A
0
CRA
0 CRB
0 CRB
0 CRCOM
CR Motor Phase x
CR Motor Phase B
CR Motor Phase B
CR Motor Common
uo,
-
1
2
3
4
5
6
7
8
9
10
11
-
Table 7-12. CN14, Power Supply
(CO94 MAIN Board Assembly)
Signal Name
+5
+5
GND
GND
GND
GP
GP
GP
+35
Function
+5 VDC
+5 VDC
Signal Ground
Signal Ground
Signal Ground
Power Ground
Power Ground
Power Ground
+35 VDC
+35 VDC
Power Switch Signal