5-13
Confidential
(3) Change the detecting conditions to check that the indication on the LCD changes
according to the sensor status. For instance, insert paper through the registration front/
rear sensor, open the front cover or the back cover, remove the toner cartridge, jam paper
at the paper outlet, insert paper from the manual feed slot, etc.
(4) Press the Cancel button to return to the printer to the initial state of the maintenance
mode.
■ Location of sensors
Fig. 5-5
LCD Sensors
Sensing status
(OK/NG of temperature/humidity)
TMP External temperature/humidity sensor XX
°C/NG
HUM External temperature/humidity sensor XX %/NG
MAC Internal temperature sensor XX
°C/NG
BT Belt temperature sensor XX
°C/NG
Note:
If the sensor detects the abnormal value, the printer displays “NG” on the LCD.
T1 registration
front/rear sensor
PCB ASSY
PF ASSY
T1 paper edge sensor
Drum position sensor PCB ASSY
Front cover sensor
Panel cable rack
Top drive ASSY
Develop release
sensor PCB ASSY
Registration front sensor
Registration rear sensor
External temperature/humidity
sensor
High-voltage power supply
PCB ASSY
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