12. RADF (Sensor)
No.
Name
Type
Function, operation
Contact point, output
1
DFD
Document feed sensor
Reflection sensor
Becomes H level when the leading
edge of document reaches the
resist roller.
H level when document is detected.
2
DTD
Document timing sensor
Reflection sensor
Becomes H level when the leading
edge of document reaches near the
transport belt.
H level when document is detected.
3
RDD
Reversion sensor
Reflection sensor
Becomes H level when the leading
edge of document is transported to
reversion/paper exit path.
H level when document is detected.
4
DED
Document end sensor
Photo interrupter
Detection of last paper in tray
H level when document is detected.
5
DWVR
Document width knob
Slide knob
Detection of document width on tray
(judged by resistance value)
H level when document is detected.
6
DLS1
Document length sensor 1
Photo interrupter
Detection of document length on tray H level when document is detected.
7
DSS
Document setting sensor
Photo interrupter
Detection of document set on tray
H level when document is detected.
8
DFMRS Paper feed motor rotation sensor Photo interrupter
Detection of paper feed motor speed Pulse output
9
DWS
Document width sensor
Photo interrupter
Detection of document width
L level when document is detected.
10
AUOD
ADF open/close switch
Microswitch
Detection of ADF unit operation
L level when closed
11
FGOD
Paper feed guide switch
Microswitch
Detection of paper feed guide
operation
L level when closed.
12
TGOD
Reflection guide switch
Microswitch
Detection of reversion cover
operation
L level when closed.
1.DFD
2.DTD
3.RDD
4.DED
5.DWVR
6.DLS1
7.DSS
8.DFMRS
9.DWS
10.AUOD
11.FGOD
12.TGOD
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