Brother MFC-8220 Service Manual

MFC-8220
SERVICE MANUAL
3-11
1.5 Power Supply
1.5.1 Low-voltage power supply
The power supply uses a switching regulation system to generate the regulated DC power
(+3.3V, +8V [non regulated] and +24V), which are converted from the AC line.
The regulated output is listed below;
Regulated Output
+3.3V / 1.5A
+8V / 0.7A
+24V / 2.9A
For the circuit diagram of the low-voltage power supply PCB, see APPENDIX 4.12 ‘LOW-
VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM’ in this manual.
Heater
Circuit
Thermal
Fuse
Feedback
Line
Filter
Fuse
Rectifier
Oscillator
24V
Regulation
Circuit
24V
3.3V
Lamp
(Heater)
(Engin Circuit / Main Circuit)
3.3V
Regulation
Circuit
Lightning
Surge
Absorber
Fuse
8V
Fig. 3-17

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