Epson C117001-N Service Manual - Page 175

Table A-2. CN1, MAIN Board Assembly

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DFX-5000+ Service Manual Table A-2. CN1, C117 MAIN Board Assembly Appendix Pin No. \ 1/0 I Name I Description 1 0 2 10 3 I 1 4 I 1 5 I 1 6,7 1- 8,9 I I VPC I DRERR I I CLIMIT 1 +12 I -12 I i GND I +5 OK for +35 VDC voltage output (used in conjunction with DRERR) Driver error signal to drop voltage to the head driver IC I Power supply board voltage drop signal I +12 VDC input for serial interface I -12 VDC input for serial interface I I Ground for logic I Power source for logic Table A-3. CN2, C117 MAIN Board Assembly Pin No. 1 2 , 3 1 4 5 6 1 7 1/0 Name Description 0 REV 0 DTR [ I RXD [ 0 I TXD NC SG I FG Reverse (same function as DTR) Data terminal ready 1 Receive data 1 Transmit data Not connected Signal ground I Frame ground Table A-4. CN3, C117 MAIN Board Assembly Pin No. 1/0 1,2 I 3,4 - 1 5,6 1- I I 7,8 Name +35A I GPA I I GPB I +35B Description For six of the nine printhead pins (1,3,5,7,8 and 9) Power ground I I Power ground I For three of the nine printhead pins (2,4 and 6) and the motors Rev. A A-3

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DFX-5000+
Service Manual
Appendix
Table A-2. CN1,
C117
MAIN Board Assembly
Pin No.
\
1/0
I
Name
I
Description
1
0
VPC
OK for +35
VDC
voltage
output
(used
in conjunction with
DRERR)
2
0
I
DRERR
Driver error signal to drop voltage to the head driver
IC
1
I
I
3
I
I
CLIMIT
Power supply board voltage drop signal
1
1
I
4
I
+12
+12
VDC
input for serial interface
1
I
I
5
I
-12
-12
VDC
input for serial interface
1
I
I
6,7
1-
i GND
I
Ground for
logic
8,9
I
I
I
+5
I
Power source for logic
Table A-3. CN2,
C117
MAIN Board Assembly
Pin No.
1/0
Name
Description
1
0
REV
Reverse (same function as
DTR)
2
0
DTR
Data terminal ready
,
[
1
3
I
RXD
Receive data
1
[
1
4
0
I
TXD
Transmit data
5
NC
Not
connected
6
SG
Signal ground
1
I
I
7
FG
Frame ground
Table A-4. CN3,
C117
MAIN Board Assembly
Pin No.
1/0
Name
Description
1,2
I
+35A
For six of the nine
printhead
pins (1,3,5,7,8
and 9)
3,4
-
I
GPA
Power ground
1
I
I
5,6
1-
I
GPB
I
Power ground
7,8
I
I
I
+35B
I
For three of the nine
printhead
pins (2,4 and 6) and the
motors
Rev.
A
A-3