Brother MFC-8220 Service Manual

MFC-8220
SERVICE MANUAL
6-35
I-4 All black
Possible cause Step Check Result Remedy
Ground
contacts
Corona wire
failure
1 Is the corona wire dirty? Yes Clean the corona wire
with the wire cleaner.
(2)
2 Is the corona wire broken? Yes Replace the drum
unit.
3 Are the charge electrodes
between the machine and the
drum unit dirty?
Yes Clean both electrodes.
(3)
Harness
connection
4 Is the laser unit connected to
the main PCB correctly?
No Connect the harness
between the laser unit
and the main PCB
correctly.
High-voltage
power supply
PCB failure
5 Is the problem solved after
replacing the high-voltage
power supply PCB?
Yes Replace the high-
voltage power supply
PCB.
Main PCB
failure
6 Is the problem solved after
replacing the main PCB?
Yes Replace the main
PCB.
CIS unit 7 Is the problem occurring on
CIS replacement?
Yes Replace the CIS.
User Check
(1) Clean the corona wire of the drum unit.
(2) The drum unit may be damaged. Install a new drum unit.

Brother MFC-8220 Specifications

General

Type	all in one
Tray Capacity	250
Automatic Document Feeder Capacity	30 sheets
Paper Size	letter, legal, a4, b5, a5, b6, a6, exe
Paper Handling	up to 250 sheets
Mono Print Speed	21 pages per minute
Print Resolution Mono	up to 2400 x 600
Maximum Number of Pages Per Month	up to 20, 000
Scanner Type	sheetfed
Scan Resolution	up to 300 x 600
Copier Resolution Mono	up to 600
Fax Function	yes
Cartridges	n/a
Number Of Cartridges	2
Internal Memory	yes
Network	not applicable
Connectivity	parallel, usb 2.0
OS Compatibility	pc: windows 95, 98, 98se, me, nt workstation 4.0, 2000 professional or xp, mac: os 8.6 to 9.2, os x 10.1, 10.2.1 to 10.3 or later, available usb 2.0 or parallel port
Mobile Devices Connection	no

Weight and Dimensions

Height	13.2 inches
Width	17 inches
Net Weight	25.6 pounds