10-40 Phaser 6280 Color Laser Printer Service Manual
Plug/Jack and Wiring Diagrams
Outline of Optional Size Switch
The paper size is determined by a combination of the On/Off statuses of the
SW 1, SW 2, and SW 3 switches of the Size Switch Assembly.
Signal Line Name Description
TRAY SEN Controls signal of the Optional Feeder Board.
Rxd
Txd
TURN CL ON (L) +24 VDC On/Off signal of the urn Clutch.
FEED CL ON (L) +24 VDC On/Off signal of the Feed Clutch.
PAPER EMPTY SENSED
(L) +3.3 VDC
Paper detects signal of the Feeder by the Photo Sensor
(Tray 3 No Paper Sensor).
PAPER SIZE SW 1 ON (L)
+3.3 VDC
On/Off signal of the Size Switch Assembly.
PAPER SIZE SW 2 ON (L)
+3.3 VDC
PAPER SIZE SW 3 ON (L)
+3.3 VDC
FEED MOT ON Drives control signal of the Feed Motor.
FEED MOT ALARM
FEED MOT CLK
FEED MOT LOW
Paper Size
Switches
SW 1 SW 2 SW 3
Letter (SEF) Off Off On
A4 (SEF) Off On On
A5 Off On Off
B5 (SEF) On Off Off
Legal 13” (SEF) On On Off
Legal 14” (SEF) On On On
Executive (SEF) On Off On
No Tray Off Off Off
On: The Actuator is pushing the Size Switch Assembly.
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