Epson GT-1200 Service Manual page 153

ADF
7.1 CONNECTOR SUMMARY
This section describes all connectors on the control board for the ADF and
their corresponding signals and functions.
Table 7-1. Connector Pin Assignment (CN1)
Pin Signal I/O
No. name destination
Document
1 +5V
width
detection
2 DWVR
volume
3 SGNG
4 +5V
5 SGND Empty sensor
6 EMP
7 + 5V
Paper feed
8 SGND motor sensor
9 KM CLK
10 +5V
11 TIMS
Timing sensor
12 TIMS DA
13 AN+24V
Registration
sensor
14 REGE
15 RDDLED
Rev. A
Signal
Function
level
Inputs +5VDC for the volume
+5V
resistance.
Outputs document width
0-5V
detection signal.
---- GND
Inputs +5VDC applied to the
+5V
empty sensor.
---- GND
Outputs paper empty sensor
0 or 5V
signal
Inputs +5VDC for the photo-
+5V
interrupter sensor.
---- GND
Outputs motor rotation amount
Pulse signal
signal.
Inputs +5VDC for the photo-
+5V
interrupter sensor.
- 3V or more:
Outputs paper empty/presence
Present
- 1V or less:
detection signal.
Empty
Inputs LED drive signal.
- Pre-feeding almost complete
- 3.8V: LED = On
- 5V:
LED = Off
-
Whole document through
Inputs +24VDC applied to the
+24V
photo-interrupter sensor.
- 0.3 - 5V :
Present
Outputs paper empty/presence
- 1 - 15V :
detection signal.
Empty
Inputs the LED light amount
0 - 24V
control signal.
Pin Signal
No. name
1 *B
2 B
3 *A
4 A
5 +24V
6 +24V
Pin Signal
No. name
DFM 1
2
DFM 2
3 DFSOL
4 +24V
5 FGOD
6 ADF +24V
7 AUOD
8 DC +24V
9 ----
: On
: Off
Table 7-2. Connector Pin Assignment (CN2)
I/O Signal
destination level
Pulse signal
Transportation
motor
+24V
Table 7-3. Connector Pin Assignment (CN3)
I/O Signal
destination level
Paper feed
Pulse signal
motor
Paper feed
Pulse signal
solenoid
Paper feed
+24V
solenoid
- 0V: Open
Paper feed
- 24V: Close
cover open/
close sensor
+24V
ADF open/
close sensor
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Appendix
Function
Outputs transportation motor
drive signal change trigger.
Outputs +24VDC for motor drive.
Function
Outputs paper feed motor drive
signal change trigger.
Outputs solenoid drive signal
change trigger.
Outputs voltage for inducing
solenoid.
Inputs paper feed cover
open/close status signal.
Outputs +24VDC for inducing
solenoid.
Inputs ADF open/close status
signal.
Outputs +24VDC for the ADF
open/close sensor.
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7-1