Brother FAX-2820 Service Manual page 189

Error Code
Symptom
(Hex)
7A
Main motor does not
synchronize with the
reference clock.
7B
ASIC error on the main
PCB.
7C
Not used.
7D
Corona wire discharge
7E-7F
Not used.
80
At the start of FAX
message printing, the
controller detects that
paper is smaller than letter
size in width.
81 Recording paper jam.
(The paper eject sensor
actuator is being push
down when turning the
machine ON.)
82
Recording paper jam while
feeding paper
(The regist front sensor
actuator is being push
down.)
83
Recording paper jam.
(The regist front sensor
actuator is push down too
early when feeding paper.)
84 Recording paper jam.
(The paper eject sensor
actuator is being push
down even after ejecting
paper.)
Probable Cause
Main PCB defective
Main motor defective
Main PCB defective
Dust is attached on the corona
wire.
The electrodes are dirty.
High-voltage PS PCB ASSY
defective
Main PCB defective
Paper smaller than the
specified size loaded in the
paper tray
Regist rear sensor actuator
caught on the surrounding
parts.
Regist rear sensor defective
Main PCB defective
Paper is jammed.
Paper eject sensor actuator
caught on the surrounding
parts.
Paper eject sensor defective
Main PCB defective
Paper is jammed.
Regist front sensor actuator
caught on the surrounding
parts.
Regist front sensor defective
Main PCB defective
Paper is jammed.
Regist front sensor actuator
caught on the surrounding
parts.
P/R solenoid defective
Main PCB defective
Paper is jammed.
Foreign materials in the paper
path.
Paper ejection roller defective
Paper eject sensor actuator
caught on the surrounding
parts.
Paper eject sensor defective
Main PCB defective
9 - 8
Solution
Replace the main PCB.
Replace the main motor.
Replace the main PCB.
Clean the corona wire.
Clean the electrodes of the main
body and drum unit. (Refer to
P9-48 "Location of Grounding
Contacts" in this chapter.)
Replace the high-voltage PS PCB
ASSY.
Replace the main PCB.
Load the correct size of paper.
Reassemble the regist rear sensor
actuator.
Replace the high-voltage PS PCB
ASSY.
Replace the main PCB.
Remove the jammed paper.
Reassemble the paper eject
sensor actuator.
Replace the main PCB.
Remove the jammed paper.
Reassemble the regist front
sensor actuator.
Replace the regist front sensor
PCB ASSY.
Replace the main PCB.
Remove the jammed paper.
Reassemble the regist front
sensor actuator.
Replace the P/R solenoid.
Replace the main PCB.
Remove the jammed paper.
Remove foreign materials.
Replace the paper ejection roller.
Reassemble the paper eject
sensor actuator.
Replace the main PCB.
Confidential