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OUTLINE OF THE MACHINE
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3.3.3 Sensors
F37 Power supply unit cooling fan-1 Cooling down the power supply unit Fig. 3-23 70-26
F38 Power supply unit cooling fan-2 Fig. 3-23 70-26
Symbol Name Function Remarks P-I
SR1 Original tray sensor Detects the length of the original set on
the original tray.
Fig. 3-3 93-2
SR2 Original tray width sensor Detects the width of the original set on
the original tray.
Fig. 3-3 93-12
SR3 Original empty sensor Detects the original set on the original
tray.
Fig. 3-3 81-3
SR4 Original reading end sensor Detecting the trailing edge of the
original at the original scanning section
Fig. 3-3 85-5
SR5 Original registration sensor Detects transport of the original at the
registration roller section.
Fig. 3-3 82-14
SR6 Original width detection sensor-1 Detects the width of the original. Fig. 3-3 82-14
SR7 Original width detection sensor-2 Detects the width of the original. Fig. 3-3 82-14
SR8 Original width detection sensor-3 Detects the width of the original. Fig. 3-3 82-14
SR9 Original intermediate transport sensor Detects the original transported to the
pre-scanning section.
Fig. 3-3 85-25
SR10 Original reading start sensor Detects the leading edge of the original
at the original scanning section.
Fig. 3-3 85-23
SR11 Original exit/reverse sensor Detects the stop reference position for
an original when in reverse.
Fig. 3-3 86-14
SR12 Original exit sensor Detects the exit (transit) of an original. Fig. 3-3 83-10
SR13 Original jam access cover opening/
closing sensor
Detects opening/closing of the Jam
access cover.
Fig. 3-3 81-3
SR14 Original reverse unit opening/closing
sensor
Detecting the opening/closing status of
the original reverse unit.
Fig. 3-3 85-6
SR15 RADF opening/closing sensor Detecting the opening/closing status of
the RADF.
Fig. 3-3 88-2
S1 Automatic original detection sensor
(APS-2)
Detecting original size
(only for A4 series models)
Fig. 3-5 54-11
S2 Automatic original detection sensor
(APS-C)
Detecting original size Fig. 3-5 54-11
S3 Automatic original detection sensor
(APS-1)
Detecting original size Fig. 3-5 54-11
S4 Automatic original detection sensor
(APS-3)
Detecting original size Fig. 3-5 54-11
S5 Automatic original detection sensor
(APS-R)
Detecting original size Fig. 3-5 54-14
S6 Carriage home position sensor Detecting the carriage home position Fig. 3-5 54-18
S7 Platen sensor Detecting the opening/closing status of
the RADF
Fig. 3-5 51-23
S8 Toner cartridge paddle rotation
detection sensor-K
Detecting the paddle rotation in the K
toner cartridge
Fig. 3-15 45-11
S9 Toner cartridge paddle rotation
detection sensor-C
Detecting the paddle rotation in the C
toner cartridge
Fig. 3-15 45-11
S10 Toner cartridge paddle rotation
detection sensor-M
Detecting the paddle rotation in the M
toner cartridge
Fig. 3-15 45-11
S11 Toner cartridge paddle rotation
detection sensor-Y
Detecting the paddle rotation in the Y
toner cartridge
Fig. 3-15 45-11
S12 Temperature/humidity sensor Detecting the ambient temperature/
humidity of the equipment
Fig. 3-10 48-12
Symbol Name Function Remarks P-I
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