COPYRIGHT © 2001 CANON INC.2001200120012001CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON) 7-3I. MAINTENANCE AND SERVICINGA. Image Adjustment Basic ProcedureSelect M in user mode, and at PG=04 (17 gradations).Select C in user mode, and at PG=04 (17 gradations).Select Y in user mode, and at PG=04 (17 gradations).Select K in user mode, and at PG=04 (17 gradations).At PG=05 (halftone), DNES-M=48, DNES-C/Y/K=0At PG=05 (halftone), DNES-C=48, DNES-M/Y/K=0At PG=05 (halftone), DNES-Y=48, DNES-M/C/K=0At PG=05 (halftone), DNES-K=48, DNES-M/C/Y=0At PG=14 (full color, 17 gradations), TXPH=0, THRU=1STARTExecute service mode at'TEST > PG=05 (halftone),A4, and copy count 15'.Istherean appreciable differencein copy density betweenthe 1st copy andthe 15thcopy? 1. 1.Set to 'DNES-Y/M/C/K=20'; then, generate 20copies at 'PG=05 (halftone)'.2. Check the internal staticeliminator roller.3. Check the internal staticeliminator high-voltagesystem.YESNOMake the following copies under 'TEST' in service mode.Is theimage fault (differencein density between front andrear, fogging, uneven density)on the copies of theCA-1 Chartonly?NOYESAre therewavy lines on thecopies?1. Check the separationcharging assembly for dirt.2. Check the separationcharging assembly for leakage.YESNOAre theretoner splashes on thecopies? 1. Check the high-voltagesystem for separation charging.2. Check the high-voltagesystem for pre-fixing charging.3. Check the environmentsensor.YESNONONOYESYESIs the image darkerat the rear?Turn the charging wireheight adjusting screw atthe front of the primarycharging assembly for theproblem color clockwise.Generate Test Print TYPE=4.Execute 'INSTALL->STIR-Y/M/C/K' (for the problem color).YESCheck to see if the grid plateis mounted properly.1. Check the mounting position of the copyboard glass, standardwhite plate, scanning lamp reflecting shade, and No. 1/2/3mirror.If dirt is found, clean the part.2. Check to see if the No. 1 mirror mount or the No. 2 mirrormount should have ridden over the rail.3. Check to see if the values in service mode are as indicatedon the service label.If there is no problem after the above checks and cleaning,execute 'FUNC > CCD > AUTOADJ' in service mode.Checking the Original Exposure SystemIsa specificcolor suffering froman image fault (density difference,fogging, lowdensity)?NOYESSet 'PASCAL' to '1' under'ADJUST' in service mode.Excute auto gradation correction.Checkthe transfer system(a of next page). Is the problemcorrected after performingthe instructions?YESCheckthe latent imageformation system (b of nextpage). Is the problemcorrected afterperforming theinstructions?NOYESCheckthe developingsystem (c of next page).Is the problem correctedafter performing theinstructions?NONOIs the color balancenormal?YESNOYESNOExecute auto gradationcorrection in user mode.YESNOAdjust 'COL-ADJ' inuser mode.ENDExecute'FUNC > CCD >AUTOADJ' in service mode.Is the problemcorrected?Is the colorbalance normal?Execute 'FUNC > EPC >in service mode.3/4 turnTurn the charging wireheight adjusting screw atthe front of the primarycharging assembly for theproblem color counter-clockwise.3/4 turnSet 'PASCAL' to '0' under'ADJUST'.Check the height of eachcharging wire, and cleaneach wire.Clean the dust-proofing glass.Make several copies usingthe CA-1 Chart.Check the original exposuresystem.Is therea difference indensity between left andright on copies made atPG=04(17 gradations)?
