Specifications

2-7
2.5 Sensors
2.5.1 Sensor Locations
The following illustration shows the relative positions of the machine’s sensors.
COVER SW
DRUM SW
PSS
CASOP
HPES
PES
JCOP
TOS
PDS
TXIL
DS2
DS1
DB4
TCS
2.5.2 Sensor Descriptions
The following table gives a brief description of each sensor and it's function.
Code Name Detects Sensor Type
TXIL
(ADF)
Interlock switch (ADF) Scanner cover open or close Micro switch
DS1 Document sensor 1 Presence of document in feeder Photo interrupter
DS2 Document sensor 2 Leading and trailing edge of document Mechanical Switch
DB4 B4 size sensor B4 sized document. Photo interrupter
TCS Top cover sensor Top cover opened or closed Photo interrupter
PSS Paper set sensor Detects paper feeding out of
cassette/tray.
Photo interrupter
PDS Paper discharge sensor Detects paper at paper exit. Photo interrupter
PES Paper empty sensor Detects presence of recording paper in
the 1st paper cassette
Photo interrupter
HPES Hand paper empty
sensor
Detects presence of recording paper in
the bypass tray
Photo interrupter
TOS Toner sensor Detects toner empty and toner
cartridge set.
Photo interrupter
CASOP Paper cassette open
sensor
Detects the 1st paper cassette open or
closed
Photo interrupter
JCOP Jam access cover (side
cover) open sensor
Detects the side cover open or closed Photo interrupter
COVER-
SW
Cover switch Detects printer cover open or closed Micro switch