17. E202 (The keys on the control panel are locked.)18. E20319. E204 (The keys on the control panel are locked.)CHAPTER 11 TROUBLESHOOTING11-93COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CauseScanneroriginal leadingedge sensor1/2 (PS3/4)DC controllerPCBChecksDoes the scanner move forwardwhen the Copy Start key ispressed?Is the scanner original leadingedge sensor 1/2 (PS3/4) normal?(See the instructions on how tocheck the photointerrupters.)Step12YES/NONONOYESActionSee “The scanner fails tomove forward.”Check the wiring fromthe DC controller PCB toPS3/4; if normal, replacePS3/4.Replace the DCcontroller PCB.CauseScanner homeposition sensorDC controllerPCBChecksIs the scanner at home positionwhen ‘E202’ is indicated?Is the scanner home position sen-sor (PS1) normal?Step12YES/NONONOYESActionSee “The scanner fails tomove forward.”Replace the scannerhome position sensor.Replace the DC con-troller PCB.CauseScanner homeposition sensor(PS1)DC controllerPCBChecksIs the scanner at home positionwhen E202 turns on?Is the scanner home position sen-sor (PS1) normal? (See theinstructions on how to check pho-tointerrupters.)Step12YES/NONOYESNOActionSee “The scanner fails torotate.”Check the wiring fromthe DC controller to PS1;if normal, replace thesensor PS1.Replace the DC con-troller PCB.
