Brother 09055CDN Service Manual page 461

LCD
TMP External temperature/humidity sensor
HUM External temperature/humidity sensor
MAC Internal temperature sensor
BT Belt unit temperature sensor
LCD
DF Document front sensor
DR Document first side rear sensor
AC ADF cover sensor
DB Document second side rear sensor
Note:
- The "--" appears on the LCD if there is no display.
- The "**" appears on the LCD if the parts are not installed or there is no item.
(3) Check that the display on the LCD is changed when the detection condition of each
sensor is changed. For instance, insert paper to the document front (rear) sensor or the
registration front (rear) sensor, open the front cover or the back cover, take out the toner
cartridge, make a jam at the paper outlet, and insert paper from the manual feed slot, etc.
(4) When the Stop/Exit button is pressed, the machine beeps for one second and returns to
the initial state of the maintenance mode.
■ Location of sensors
Develop release
sensor PCB ASSY
Top drive ASSY
Panel cable rack
Front cover sensor
Drum position sensor PCB ASSY
Sensors
Sensors
Fig. 5-14
5-23
Sensing status (OK/NG of
temperature/humidity)
°
XX C/NG
XX %/NG
°
XX C/NG
°
XX C/NG
Sensing status (OK/NG)
Without documents/With document
Without documents/With document
Close/Open
Without documents/With document
High-voltage power supply
PCB ASSY
Registration rear sensor
External temperature/
humidity sensor
Registration front sensor
T1 registration
front/rear sensor
PCB ASSY
PF ASSY
T1 paper edge sensor
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