Brother MFC-B7720DN Service Manual

2-85
Confidential
 Electrodes location of the process unit
Fig. 2-17
 Faulty registration
<User Check>
• Check whether appropriate paper type is selected on the
driver.
• Install the latest main firmware.
Step Cause Remedy
1
Registration rear actuator
coming off
Reattach the registration rear actuator.
2 Laser unit failure Replace the laser unit.
3 Main PCB failure Replace the main PCB ASSY.

Brother MFC-B7720DN Specifications

General

Brand	Brother
Model	MFC-B7720DN
Category	All in One Printer
Language	English