11-90CHAPTER 11 TROUBLESHOOTINGCOPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)27 Pick-up fails. (cassette)CauseBeltRight doorLocking leafspringVertical pathroller 1 clutch(CL5), verticalpath roller 2clutch (CL6)Pick-upassemblyPick-up clutchDC controllerPCBSensorPick-upassemblyChecksDoes the Add Paper indicatorremain on?Does the lifter drop when thecassette is slid out, and does thelifter motor rotate when thecassette is slid in?Is the belt for drive attachedproperly?Is the right door fully closed?Is the right door locking the verti-cal path rollers 1 and 2 in place?Open the right door, and press theCopy Start key with a screwdriverset in the door switch. Do thevertical path roller 1 (CL5) and 2(CL6) rotate?Is the leading edge of the copypaper as far as the registrationroller?Open the right door, and press theCopy Start key with a screwdriverset in the door switch. Does thefeeding/separation roller rotate?Set the meter to the 100VDCrange, and connect the probes ofthe meter to the followingconnectors on the DC controllerPCB. Does the voltage changefrom about 0 to 24 V when theCopy Start key is pressed?Cassette Clutch + -1 CL2 J116-B6 J116-B52 CL3 J115-A3 J115-A2Find out which sensor has detect-ed the jam in service mode ([1]No.109). Is the sensor normal?(See the descriptions on servicemode and instructions on how tocheck photointerrupers.)Step12345678910YES/NOYESNONONONONOYESYESYESNONOYESActionSee “The Add Paperindicator fails to turn off.”See “The lifter fails tomove up.”Re-attach the belt.Close the door.Check the lockingspring.Check the wiring; ifnormal, replace thefaulty clutch.See “The registrationroller fails to rotate.”Go to step 10.Check the wiring; ifnormal, replace thefaulty clutch.Replace the DCcontroller PCB.Check the wiring and thelever; if normal, replacethe sensor.Remove the pick-upassembly, and check thesprings and gears.
