Brother MFC-J2320 Service Manual page 95

Step
1 Paper pull-in roller not
mounted in place
2 CR encoder strip stained
3 PF encoder disk stained
4 Bank ASSY out of place
5 The grease of the switching
lever guide of the maintenance
unit is not enough
6 Paper feed motor harness
connection failure
7 Registration actuator out of place
8 Paper feeding path parts out of
place
9 Paper pull-in roller worn out
10 CR encoder strip defective
11 CR encoder sensor defective
12 Switching lever guide defective Replace the maintenance unit.
13 Registration sensor defective
14 Paper feed motor defective
15 Main PCB defective
Switching lever guide
Apply grease here.
Cause
Set the paper pull-in roller into place.
Clean the CR encoder strip.
Clean the PF encoder disk and flushing guide
(refer to
Set the bank ASSY into place.
Apply the grease for the switching lever guide of
the maintenance unit.
Reconnect the paper feed motor harness.
Set the registration actuator into place.
Set the feeding path parts into place.
Replace the paper pull-in roller.
Replace the CR encoder strip
Replace the carriage PCB ASSY.
Replace the registration sensor PCB ASSY.
Replace the paper feed motor.
Replace the main PCB ASSY.
Maintenance unit
Fig. 2-8
2-58
Solution
Chapter 3, Section 1.)
Confidential