COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)Inputs to and Outputs from the DC Controller PCB (2/10)CHAPTER 2 BASIC OPERATION2-4DC controller PCBMultifeeder tray PCBMultifeeder traypaper sensorHolding trayposition sensorJ1802-3-1-2J214-4-6-5P5SAVEOHPSNS2*PS 1801J1801-3-1-2J214-1-3-2 OHPSNS1*P5SAVEColor toner levelsensorJ621-4-2-1-3J221-1-3-4-2N.CCTNLEDCTNSNSWhen '1', the LED turns on.J631-3-1-2J221-5-7-6When '1', the LED turns on.WTLEDJ633 J631WTLEDGNDWTNFULColor tonercartridge releasinglever sensorJ1902-3-1-2J207-7-6-8J675-4-6-5J676-3-4-2Sub relay PCBRLOCKSFixing/deliverysensor PS 1903J1903-3-1-2J207-10-12-11PS 1902PS 621When the sensor detectspaper, '1'.FXOUTSDeveloping rotaryposition sensorJ43-3-1-2J207-3-5-4 DEVHPP5SAVEMPTPS*MPTPS*P5SAVEWhen paper is present onthe multifeeder tray, '0'.When the holding platemoves up, '1'.J213-7-6-3J1301-7-6-3-1-3-2-3-1-2J42-1-3-2-3-1-2J45P5SAVEP5SAVE-1-3-2-3-1-2J71-1-3-4-2-4-2-1-3J70-1-3-2-6-4-5J17-4-6-5-3-1-2For details, see p. 4-12.J17PS 1802PS 1302PS 3PS 1301Waste tonerdetecting assemblyTransparencysensor 1Transparencysensor 2When the flag is detected, '1'.When the releasing leverof the color toner cartridgeis closed, '1'.When the waste toner caseis full, '1'.For details, see p. 4-16.When both are '0', atransparency is present.For details, see p. 5-2.When the color toner isabsent, '0'.Figure 2-104Download free service manual at http://printer1.blogspot.com