COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIMÉ AU JAPON)xCHAPTER 10 TROUBLESHOOTINGI. MAINTENANCE AND INSPECTION..10-3A. Image Adjustment BasicProcedure....................................10-3B. Periodical Servicing.....................10-4II. STANDARDS AND ADJUSTMENTS..10-5A. Image Adjustment .......................10-51. Adjusting the Image LeadingEdge Margin ([3], No.305;registration ON timing) ...........10-52. Adjusting the Leading EdgeNon-Image Width ([3], No.306; blank shutter ONtiming).....................................10-63. Adjusting the Image TraillingEdge Non-Image Width ([3],No.309; blank shuttertiming).....................................10-74. Adjusting the Left/RightRegistration ............................10-85. Adjusting the Left/Right Margin(No.311; left/right margin).......10-96. Adjusting the Scanning LampIntensity ..................................10-107. AE Adjustment .......................10-11B. Exposure System ........................10-151. Routing the Scanner DriveCable ......................................10-152. Adjusting the Mirror Positionoptical distance between No.1mirror and No.2/No.3 mirror) ..10-163. Adjusting the Scanner CableTension ...................................10-174. Assembling the MirrorPositioning Tool ......................10-175. Points to Note When Attachingthe Fluorescent Lamp Heater/Scanning Lamp ......................10-186. Positioning the ChangeSolenoid .................................10-20C. Image Formation System ............10-211. Positioning the Blank ShutterSolenoid .................................10-212. Routing the Blank ShutterCable ......................................10-223. Positioning the Solenoid for thePrimary Charging Roller.........10-224. After Replacing the DrumUnit .........................................10-235. Attaching the Drum Heater ....10-23D. Pick-Up/Feeding System .............10-251. Orientation of the Pick-UpRoller ......................................10-252. Orientation of the MultifeederPick-up Roller .........................10-253. Positioning the paper GuidePlate Cam (multifeeder) .........10-26E. Fixing System..............................10-271. Points to Note when Attachingthe Fixing Film........................10-272. Points to Note when Attachingthe Heater Connector.............10-273. Adjusting the Fixing Film DriveRoller Pressure ......................10-284. Points to Note after Replacingthe Fixing Upper Unit .............10-295. Adjusting the Nip ....................10-306. Routing the Drive Belt ............10-317. Storing the Fixing HeaterRegistance .............................10-318. Setting the Fixing HeaterTemperature Control Value.....10-32F. Electrical......................................10-351. After Replacing the PCB ........10-352. Clearing the Back-Up RAM ....10-353. Checking thePhotointerrupters....................10-364. Adjusting the MultifeederPaper width Sensor ................10-435. Setting the Paper Size for theUniversal Cassette .................10-44III. TROUBLESHOOTING IMAGEFAULTS.............................................10-45A. Initial Checks ...............................10-451. Site Environment ....................10-452. Checking the Originals ...........10-453. Checking the CopyboardCover and the CopyboardGlass ......................................10-454. Checking the Paper................10-455. Others.....................................10-46B. Samples of Image Faults.............10-48C. Troubleshooting Faulty Images....10-491. The copy is too light(half-tone only). ......................10-492. The copy is too light(black solid also).....................10-503. The copy is too light(overall, extremely). ................10-504. The copy has uneven density(front too dark)........................10-525. The copy has uneven density(front too light). .......................10-526. The copy is foggy (overall). ....10-537. The copy is foggy (vertical). ...10-548. The copy has black lines(vertical; thick fuzzy lines). .....10-549. The copy has black lines(vertical, fine)..........................10-54
