Brother HL-L8250CDN Service Manual page 297

LCD
MAC XXC Internal temperature sensor
BT XXC Belt temperature sensor
TMP XXC External temperature sensor
HUM XXC External humidity sensor
Note:
If the external temperature/humidity sensor detects the unusual value, the machine displays
"NG" on the LCD.
(3) Check that the display on the LCD is
changed when the detection condition
of each sensor is changed.
For example, insert paper through the
registration front/rear sensor, open the
front cover or the back cover, remove
the toner cartridge, make a jam at the
paper outlet, insert paper from the MP
tray, set the paper tray, etc.
(4) Press the Cancel key and finish this
operation to return the machine to the
initial state of the maintenance mode.
■
Location of sensors
Process drive unit
Front cover sensor
Sensor names
Registration front sensor
Fig. 5-6
5-14
Detection status (displayed/not displayed)
°
XX C/NG
°
0 C (The value will not be changed since this
sensor is not installed.)
°
XX C/NG
XX %/NG
(3) Check that the display on the LCD is
changed when the detection condition
of each sensor is changed.
For example, insert paper through the
registration front/rear sensor, open the
front cover or the back cover, remove
the toner cartridge, make a jam at the
paper outlet, insert paper from the MP
tray, set the paper tray, etc.
(4) Press the X key and finish this
operation to return the machine to the
initial state of the maintenance mode.
Registration rear sensor
High-voltage power supply
PCB ASSY
Paper feed unit
T1 paper feed sensor
External temperature sensor
External humidity sensor
Registration front/rear
sensor PCB ASSY
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