Electronic components, Sensor locations – Lexmark 5021-0XX User Manual
Page 308
5-4
Service Manual
5021-0XX
Electronic components
Sensor locations
Name
Code
Function
Paper size sensor
PSU
Detects paper size.
Registration
sensor
PT1
Detects whether paper is fed from paper
drawer.
Fuser exit sensor
PT2
Detects when paper exits from rear cover
assembly.
Tray empty sensor
PEU
Detects if paper is loaded in paper
drawer.
OHP sensor
OHP
Detects if transparencies are loaded in
paper drawer.
OPC marker
sensor
PBS
Detects connecting position of OPC belt.
Toner empty
sensor
TPD/TTR
Detects if any toner cartridge is empty.
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