Epson 2070 Service Manual - Page 154

Table A-4. Connector Pin Assignments - CN5

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Appendix LQ-2070 Service Manual Table A-1. Connector Summary Board MAIN Board Assembly Connector CN1 CN2 CN3 CN4 CN5 CN6 CN7 CN8 CN9 CN10 CN11 CN12 CN13 CN14 CN15 CN16 Function Parallel interface Type B interface C166 PSB/PSE board assembly HP sensor Rear PE sensor Front PE sensor PW sensor Printhead Printhead PF motor CR motor Release lever position sensor PG sensor CSF bin 1 PNL board assembly Release lever position sensor Pins 36 36 10 3 3 2 4 17 15 4 5 2 2 10 22 2 Table A-2. Connector Pin Assignments - CN3 Pin I/O Signal Name Function 1 -- GP 2 -- GP 3 I +35V 4 I +35V 5 -- GND 6 -- GND 7 I +5V 8 I +5V 9 I PWDN 10 O PSC -- -- +35 VDC line +35 VDC line -- -- +5VDC line +5VDC line +35 V line overload section signal Power on/off switch signal Table A-3. Connector Pin Assignments - CN4 Pin I/O Signal Name Function 1 I HP 2 -- GND 3 - +5V CR home position signal Signal GND +5 VDC Table A-4. Connector Pin Assignments - CN5 Pin I/O Signal Name Function 1 -- +5V 2 I PE 3 - GND +5 VDC Rear paper end signal Signal ground A-6 Rev.A

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Table A-1. Connector Summary
Board
Connector
Function
Pins
MAIN Board
Assembly
CN1
Parallel interface
36
CN2
Type B interface
36
CN3
C166 PSB/PSE board assembly
10
CN4
HP sensor
3
CN5
Rear PE sensor
3
CN6
Front PE sensor
2
CN7
PW sensor
4
CN8
Printhead
17
CN9
Printhead
15
CN10
PF motor
4
CN11
CR motor
5
CN12
Release lever position sensor
2
CN13
PG sensor
2
CN14
CSF bin 1
10
CN15
PNL board assembly
22
CN16
Release lever position sensor
2
Table A-2. Connector Pin Assignments – CN3
Pin
I/O
Signal Name
Function
1
—-
GP
——
2
—-
GP
——
3
I
+35V
+35 VDC line
4
I
+35V
+35 VDC line
5
—-
GND
——
6
—-
GND
——
7
I
+5V
+5VDC line
8
I
+5V
+5VDC line
9
I
PWDN
+35 V line overload section signal
10
O
PSC
Power on/off switch signal
Table A-3. Connector Pin Assignments – CN4
Pin
I/O
Signal Name
Function
1
I
HP
CR home position signal
2
—-
GND
Signal GND
3
—
+5V
+5 VDC
Table A-4. Connector Pin Assignments – CN5
Pin
I/O
Signal Name
Function
1
—-
+5V
+5 VDC
2
I
PE
Rear paper end signal
3
—
GND
Signal ground
Appendix
LQ-2070 Service Manual
A-6
Rev.A