Epson C117001-N - DFX 5000+ B/W Dot-matrix Printer Service Manual page 179

Table A-1 1. CN1O, Cl 17 MAIN Board Assembly
Pin No.
1
2 0
3
4 I
Table A-12. CN1, Cl 17
Pin No.
I
2
3
Table A-13. CN2, Cl 17 PSB/PSE Power Supply Board Assembly
Pin No.
I
I
0
1,2
3-6 -
I o I
7,8
Table A-14. CN3, Cl 17 PSB/PSE Power Supply Board Assembly
Pin No.
I
I
2
3 0
4 0
I
I
0
5
I I
0
8,9
I
Table A-15. CN4, Cl 17 PSB/PSE Power Supply Board Assembly
Pin No.
1 0
2
Rev. A
Name
GND Ground
Power source for CR sensor (encoder)
Encoder pulse phase A input
Encoder pulse phase B input
Name
L Line
Not connected
N Neutral
Name
I
+35 VDC for the main board for six of the nine
GP Ground for +35 VDC
I
+35 VDC for the main board for three of the nine
Name
OK for +35 VDC voltage output (used in conjunction
VPC
with DRERR)
Driver error signal to prohibit +35 VDC voltage (head
driver broken)
Voltage drop detection signal (sent to main board)
1
-12V Supply for the serial interface circuit on the main board
Supply for the serial interface circuit on the main board
Ground for logic
Supply for the logic circuit on the main board
Name
FAN +35 VDC
FG Frame ground
Description
Power Supply Board Assembly
Description
Description
Description
Description
Appendix
I