Brother MFC-9130CW Service Manual page 359

(4) Check that the display on the LCD is changed when the detection condition of each
sensor is changed. For instance, insert paper through the registration front/rear sensor,
open the joint cover ASSY or the back cover, make a jam at the paper outlet, insert paper
from the manual feed slot, set paper tray, etc.
(5) Press the Stop key to return the machine to the initial state of the maintenance mode.
■ Location of sensors
Back cover sensor
Eject sensor
Internal temperature sensor
External temperature sensor
External humidity sensor
Second side document scanning
position sensor
First side document scanning
position sensor
Paper eject ASSY
Paper feed sensor
Fig. 5-10
Lower ADF chute
Fig. 5-11
High-voltage power
supply PCB ASSY
Top cover sensor
Registration front/rear/
manual feed sensor PCB
Paper feed unit
ADF cover sensor/
document detection sensor
Document
detection sensor
5-21
Manual feed paper empty sensor
Registration
Registration
front sensor
rear sensor
ADF cover sensor
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