General InformationPhaser 3320 and WorkCentre 3315/3325 Xerox Internal Use OnlyService Manual1-28ElectricalThe electrical system consists of the Main Board, Control Panel Board, HVPS, LVPS, Power SwitchAssembly, ADF/DADF Board, FAX, and Wireless Interface Board.• Main BoardThe Main Board controls all modules required to print, that is, LSU, HVPS, SMPS, FAN, Fuser, FAX,and Scanner. The controller receives print data from the host through network or USB Port or fax,Scanner. It takes this information and generates printable video bitmap data. Engine and videocontrol are combined.• Control Panel Board - displays the status of the system using 16 x 2line LCD in response to useractions or the Main controller.• HVPS - supplies high voltage for the developing Process. The High Voltage is controlled by thePWM signal from the CPU.• LVPS - makes +5V and +24V DC from 220V or 110 AC.• Power Switch Assembly - controls power to the printer.• ADF/DADF Board - provides the interface between the ADF/DADF and the Main Board.• FAX Board - provides the FAX interface to the printer.• WLAN Board - the WLAN board provides a wireless Ethernet interface.Optional Memory• Optional Memory DIMM for WorkCentre 3325 onlyA 256 MB, SO-DIMM Board is available to increase system memory on the Main Board. Additionalmemory is used for operating system, system application programs, and print data storage.Locations of Phaser 3320 Electrical ComponentsThe following illustration shows the location of electrical components in the Phaser 3320.Main MotorRear CoverOpen SwitchMain FanLVPS FanBypass TrayClutchPick UpClutchRegistrationClutchCoupler Bars3320-249
