Electronic Components; Printer Engine Sensor Locations - Lexmark X500n Service Manual

7100-XXX

Electronic components

Printer engine sensor locations

Name
Paper size sensor
Registration sensor
Fuser exit sensor
Tray empty sensor
OPC marker sensor
Toner empty sensor
Waste toner sensor
Temperature sensor for fuser
unit
Output tray full sensor
Toner key sensor
Toner density sensor
Room temperature thermistor
sensor
Transfer unit sensor
5-4
Service Manual
Code
Detects paper size.
PSU
Detects whether paper is fed from paper drawer.
PT1
Detects when paper exits from rear cover assembly.
PT2
Detects if paper is loaded in paper drawer.
PEU
Detects connecting position of OPC belt.
PBS
Detects if any toner cartridge is empty.
TPD/TTR
Detects when waste toner bottle is full.
WTS
(LED/TR)
Thermistor that detects fuser temperature.
TH
Detects when paper exit tray is full.
PFUL
Detects presence of toner cartridge.
TNK
Detects toner density of images formed on the transfer belt
TDS
surface.
Detects ambient room temperature.
RTS
Detects irregular rotation of transfer belt.
TBS
Function