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AR-RF3 EXTERIOR/INTERIOR STRUCTURE 3 - 2
C. PWB
D. Sensors
No.
Name
Function/operation
1
LED PWB
LED display
2
Main PWB
Controls and drives RADF.
No.
Name
Code
Type
Function/operation
Output
1
Tray original length sensor 2
DLS2
Photo interrupter
Detects length of original in tray (long originals)
TP3 becomes HIGH when original is detected.
2
Tray original length sensor 1
DLS1
Photo interrupter
Detects length of original in tray (short originals)
TP2 becomes HIGH when original is detected.
3
Original width detector
volume
volume
DWVR
Volume
Detects width of original in tray
TP1 voltage changes within range of 0 to 5V
depending on width of original.
depending on width of original.
4
ADF front open sensor
FOS
Photo interrupter
ADF open/closed status sensor
TP18 becomes HIGH when ADF is open.
5
Empty sensor
EMPS
Photo interrupter
Detects the presence of an original in document
feed tray
feed tray
TP5 becomes LOW when an original is
detected.
detected.
6
Timing sensor
TIMS
Reflection sensor
Detects when the original has been transported
as far as the timing sensor section
as far as the timing sensor section
TP11 becomes 1V or lower when an original is
detected.
detected.
7
Resist sensor
REGS
Reflection sensor
Detects when the original has been transported
as far as the resist sensor section
as far as the resist sensor section
TP8 becomes 1V or lower when an original is
detected.
detected.
8
Document feed open sensor
DFOS
Photo interrupter
Detects the open/closed status of document feed
cover
cover
TP4 becomes HIGH when the cover is open.
9
Document feed open switch
DFSW
Microswitch
Detects the open/closed status of document feed
cover
cover
Pin 2 on CN11 becomes 24V when the cover
is open (when ADF is closed).
is open (when ADF is closed).
10
Document exit open sensor
DEOS
Photo interrupter
Detects the open/closed status of the document
exit cover
exit cover
TP17 becomes HIGH when the cover is open.
11
ADF open switch
AOSW
Microswitch
Detects the open/closed status of the ADF
TP47 becomes HIGH when the cover is open.
12
Reverse sensor
DRS
Reflection sensor
Detects when the original has been transported
as far as the reverse sensor section
as far as the reverse sensor section
TP14 becomes 1V or lower when the original is
detected.
detected.
13
Document exit sensor
DES
Photo interrupter
Detects when the original has been transported
as far as the document exit sensor section
as far as the document exit sensor section
TP16 becomes HIGH when an original is
detected.
detected.
1
2
4
9
5
7
8
6
11
10
12
13
1
2
3
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