COPYRIGHT © 2000 CANON INC. 2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000CHAPTER 7 EXTERNALS AND CONTROLS7-8 P3.1.3 Output of Power SuppliesThe outputs of the machine’s power supplies are controlled by the main power switch,control panel power switch, or signal from the printer board.The output is controlled by the DC power supply PCB as follows based on the combina-tion of the signal from the printer board and the state of the power switch and the controlpanel switch:T07-301-04Main powerswitch (SW1)OFFONONControl panelswitch or printboard signalOFFOFFONPower outputfrom DC powersupply PCBNone3.3VB*AllRemarksIf the environment switch (SW3) isON, the drum heater will be suppliedwith power (AC). In addition, if theheater switch (SW4) is ON, the cassetteheater is supplied with power (AC).*Supply is sent to the following:3.3 VB:controller unit
