Brother MFC-8220 Service Manual

CHAPTER 3 THEORY OF OPERATION
3-10
1.4 Engine PCB
The gate array which transforms the serial signal from the main PCB into the parallel signal is
mounted on the engine PCB.
The engine PCB controls the following parts by using the transferred signal data;
• Main motor
• Solenoid
• Fan motor
• Upper cassette sensor
• Thermistor
• Lower cassette sensor
• Polygon motor • Upper paper exist sensor
• High-voltage power supply • Lower paper exist sensor
• Toner sensor • Lower cassette exist sensor
• Cover sensor • Paper eject sensor
• Front regist sensor • Fixing unit cover sensor
• Rear regist sensor
For the circuit diagram of the engine PCB, see APPENDIX 4.7 and 4.8 ‘ENGINE PCB
CIRCUIT DIAGRAM’ in this manual.
Sensor configuration varies according to machine types.
MFC-8220
Upper cassette sensor
Upper paper exit sensor
: Built-in : Not built-in

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