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1. 3 10 LJIUANHD IID FAULTS WITH ERROR NUMBERS Con t ERROR 55 or 64 or 67 or 12 1 Replace HVPS I Check Jumper J209 is connected on DC Con PCA 2 See Service Note 33440AB AU 09 when connected to a Vectra ERROR 63 I Faulty Expansion Memory PCA 2 Using Non HP Memory ERROR 67 when print If Formatter PCA is disconnected the print engine command is received by test does run OK Replacing DCPS assy fixed this ERROR 55 or 12 Formatter PCA New Info problem Other causes for this error are N Donaldson SQF I Replace Formatter PCA New Info Intermittent ERROR 67 New Info I Replace Formatter PCA 2 Replace HVPS Assy ERROR 70 When down loading soft fonts LJIID Not enough memory ERROR 79 I Non HP Font cartridge caused problem 2 Non HP Memory 3 Faulty Formatter PCA 4 Faulty HP Memory or Font 5 Check any boards installed in Optional VO slot eg Network i Data boards etc ERROR 79 01ae LJIID Only fails in Duplex mode using none HP font normally on one particular programme Programme works fine on LJ2000 Problem caused by undefined char from a char font normally treated as a space in this case it does not Solution do not use these none HP fonts on HP LJ printers ERROR 79 Customer using All the normal parts were replaced Formatter memory HPGL2 commands and driver
2. Customer was using a small variable transformer that obviously could not supply the current the printer required Customer to ensure the transformer can supply the necessary current to the LaserJet ERROR 12 or no Display LJID 1 Replace the DC Controller PCA See S N 33440AB AU 09 if used with Vectra 2 Replace Formatter PCA 3 Replace DC Power Supply 4 Replace Scanner Motor 5 AC Power Module See Error 12 flow diagram at end of this section Appendix Al PERMANENT ERROR 16 Toner Low I Grey wire from HVPS sub block to HVPS was connected to lower position instead of upper position 2 Replace HVPS 3 Replace HVPS to DC Controller cable P N RGI 8906 000CN 4 Replace DC Controller PCA ERROR 20 Memory Overflow Downloading too many soft fonts graphics Initiate a Print Font and work out how much memory this takes compared to the memory actually available Reference Programming Hints in Tech Ref Man Standard User Memory is 395Kb LJID When continuous Self Test 04 is used on PLC 5 printers ERROR 20 may occur This is normal for PCLS5 printer NOT PCLA Due to HPGL2 vector commands used on Self Test and the additional memory it requires The number of pages of Self test which are printed before this error may occur depends on the available RAM If printer is powered down more RAM may be available therefore ERROR 20 may take lo
3. 3mm 1mm Top Horz Border LEFT Left Edge to First Dot Row Left Vert Border 5mm 2mm 44 LEFT Left Edge to First Dot Row Left Vert Border 6mm 2mm Ltr Max Image tolerance 1 5mm over 259mm 10 2 Check 1 Is paper correctly installed in MP Tray 2 Check Media for paper qulaity problems refer customer to Paper Spec s Guide 5002 1801 3 Is media cut square This model of LaserJet is a SIMPLEX printer and is not designed for Duplex printing Although this printer can print on both sides this practice is not supported by HP For the general HP statement on Duplex printing v Simplex please reference HP Reference Guide Green Book section 3 As above refer to HP general statement on Duplex printing v Simplex in HP Reference Guide Green Book section 3 Interleaving where a variety of paper is placed in the paper tray is not recommended by HP This practice i likely to lead to Paper jams amp Misfeeds For the general HP statement on Interleaving Paper please reference HP Reference Guide Green Book section 3 Check connector J901 on lower tray PCA Carefully resolder if necessary or replace this PCA Paper is just about to enter the Fuser Assy when this paper jam occurs This occurs every time Replacing PS1 input sensor resolved this problem 4 18 PS BUSY when using HP Postscript Cartridge HP 33439P A continuous PS
4. Faint Print Ghosting images Background Gears Noises Error 41 51 Error 41 5 LJ3 4Si Toner Dumping or leaking Toner runs out quickly Toner Low Short Toner Cartridge life Main Motor Errors e g Error 57 LJ3 4Si Note If problem is similar to above before embarking on replacing major LJ assemblies try replacing the Toner Car tridge Itis quick and easy to replace Note Did you initially diagnose nature of problem incorrectly Revisit determine exact problem again Toner Cartright Product Numbers amp Weight aw EP eal 1375 1325gm 1140 1090gm Pe ie 4 46 60z 40 1 38 40z TP 0P oP 92275A EP L 1000 950gm 825 775gm 35 2 33 40z 29 27 302 92285A EP C 1550gm 1320gm 54 30z 46 20z EN 1 Box contains two 0 5 Kilogram bags 2 This EP Drumhasa P N R44 0230 000CN Toner Cartridge Life The useful expectancy of toner cartridge life depends on print density setting Toner coverage toner usage and print pages mechanical wear Toner coverage per page is approximately 5 for more detail please refer to the HP LaserJet Reference Guide Green Book section 5 Life Expectancy for each type of Toner Cartridge is HP LaserJet II IID HI HD 4000 pages 92295A HP LaserJet IIP IIP IHP 3500 pages 92275A HP LaserJet I ID 3000 pages 92285A Shelf Life This is if unopened approximately 2 5 years of storage the maximum shelf life of an opened cartridge is approximately 6 mon
5. Lower cassette Faulty Lower Paper Size Switch Replace this assy Permanently OUT OF PAPER 2686D PERMANENT 1 Faulty DC Controller ERROR 12 2 When lid closes not activating switch in VP Power Interlock assy 3 Print engine transformer 4 Missing DC Voltage replace DC Power Supply Motor Driver PCA 2686D ERROR 12 The latch FA2 5678 000CN which holds down the Intermittently upper main body on the LHS had a small crack in it It was difficult to see the crack and printer appears to Updated function correctly On applying power it would Andy Cassels Aberdeen intermittently give ERROR 12 or the printer would not power up at all This was caused by the motor starting up and causing upper chassis to flex Due to this movement 1 to 2mm this was enough to trigger the interlock When the interlock had operated power is cut motors stpped frame returns to its correct posi tion then power is reapplied This scenario can thus repeat Replace latch FA2 5678 000CN 2686A D FAULTS WITH ERROR NUMBERS Con t 2686D ERROR 12 paper Traced to bad Lid Switch ie DOOR OPEN not feeding correctly from Loss of 24y both LP trays it Judders then Error 12 occurs Also a BLANK page is emitted from the printer ERROR s 20 21 22 amp 40 Error 20 memory overflow and Error 21 print overrun Usually caused by software due to the following CPU Host sent to much Data to 2686 To clear press continu
6. Oct 94 Light Brown OIL LIKE 10mm Stain on the Front RHS of a DUPLEXED Page Mar 94 STREAKS down the Page Gary McGaw LJ2 Jan 95 I Registration Solenoid sticking replace 2 Replace Paper Control PCA When printing Self Test prints Ist page OK 2nd page image moves down page 5mm and every following page begins printing at this point Replacing Paper Control PCA resolved this pbm 1 Try setting Print Density toward 9 2 Cover Interlock switch on DC Cont not activated Switch not present on all DC Cont s see 33449A 04 or 33459A 02 3 Out of Spec Media 4 Dry Fuser Cleaning Pad 5 Replace Fuser Assy 1 Inside of Printer Dirty 2 Lower Fuser Roller contaminated i e Preprinted Letterhead melting in fuser See Paper Spec s 3 L2 amp LJ3 ONLY use Test Tool to verify Corona wire Stuck ON Replace RGI 0906 000CN cable AVPS to DC Controller This stain can appear on the front side of a Duplexed Page when the duplex feature is NOT used for several weeks This problem will typically resolve itself after 10 50 pages This is due to Oblique Roller m Duplex area this roller has a preservative which can accumu late on the roller if unused See Service Note 33447A 10 for more detail 1 Run through 10 50 pages to clean this roller 2 Clean roller with paper not alcohol 3 Replace Oblique Roller RG1 1356 000CN These streaks were of a lighter background in appear ance Adjusting Dens
7. RG1 2499 000CN Upper Feed Roller Assy RGI 2500 O000CN Lower Feed Roller Assy RF1 2548 000CN Lower Separation Pad RG1 1356 000CN Duplex Paper Alignment Oblique Roller RG1 2498 000CN Duplex Guide Assy Service Test Too Boards LaserJet I III This is a very useful tool for the LIN LIMI LaserJets which is installed into the DC Controller PCA at J210 An access plate can be found and this is located on the RHS of the printer on the bottom cover pan Its Part Number is 33440 67905 Service Test Tool This test board allows the CE to check the following visually LED 5Vdc amp 5Vdc Power Supply 24AVdc Power Supply DBAC presence of the Developer AC Bias enable line DBDC presence of the Developer DC Bias enable line PRIMARY presence of the Primary Corona enable line TRANSFER presence of the Transfer Corona enable line This tool additionally allows user to print the following print samples White Page This is useful for detecting light leaks toner spills defective EP Drums primary corona failures etc Vertical Lines Useful for measurmg skew detecting scanner motor speed problems lines will be wavy Horiz Lines Useful for measuring horizontal skew detecting paper motion problems lies will be wavy Black Pages Useful for detecting white spots drop outs drum defects transfer system probelms etc It also has a READY INHIBIT switch which allows No paper im the paper trays Non Pape
8. occurs PERMANENT ERROR 13 The 24v was being pulled down by faulty AC Cont on switching on PCA Replace AC Controller PCA ERROR 13 6mm of Paper Replace Fuser Exit Sensor protruding out of the Fuser Rollers 2686A Paper Jams when user Paper Feed clutch found to be heavily congeled in begins operating printer for grease paper dust Throughly cleaning clutch the first time in the morning resolved problem No problems after first initial uasage LOSING TOF when using 1 Check quality of Labels Use Avery label paper from the manual 2 Replace Manual Feed Assy F G1 2354 000CN feed I P tray 3 Check alignment of manual idler roller on Reg assy in relationship to roller on the manual feed assy 2686D in FACE DOWN Nylon rollers slipping on paper pick up shaft item 15 MODE RH edge of paper Fig 8 21 BENT over 2 16 2686A 2686D PAPER PATH PROBLEMS Con t PRINT SKEWING amp Paper REGISTRATION problems First page OK second sheet text has SHOFTED DOWN page Faulty REGISTRATION i e Print shifted down page by approximately 2 inches LINE SPACING between 2686 amp 33440A NOT THE SAME TRAILING EDGES OF ENVELOPES Wrinkled as it passes through fuser Customer printing BOTH SIDES of the Page or DUPLEX printing This may cause paper jams paper feeding or print quality problems Customer REFEEDING paper not two sided printing PAPER JAMS MISFEEDS SKEWING caused by customers practic
9. B ham from paper cassette trays Oct 94 ERROR 58 O P UNIT Worn shank on brass gear bearing on the nearside FAILURE Only occurs lifter assy drive shaft item 26 Fig 8b 8 page 8b 15 when paper moves from a p n RS1 0078 000CN causing stacker tray to seize VP tray Stacker O P tray This meant that the tray could not initialise by dropping jammed at the top of its the required 1 2 inch travel only 2 5cm of text is printed ERROR 60 Printer AC power 1 J109 connector on DC CONTROLLER PCA Line UNSTABLE not connected 2 Faulty DCPSI See Fig 9 1 p 9 3 for location 3 Faulty SLAVE CPU PCARGI1 0513 040CN ERROR 62 when opening LH The DC Controller PCA had been replaced and sidedoor 10 1 Printer Door connector J 124 on the DC Ctlr PCA and J902B on Open message was first to appeal DFD PCA had been reversed BEWARE this is easily even though door was actually mistakenly done closed 2684 FAULTS WITH ERROR NUMBERS Con t ERROR 70 System Fault Faulty FORMATTER PCA O6FF Intermittent ERROR 70 160F intermittent The Formatter Power Supply 5v was found to measure New Info 4 5v This DC Voltage was reajusted to 5v and problem didnot recur NOTE any problems in the Formatter area it is always worthwhile checking this voltage ERROR 74 Local RAM Faulty F ORMATTER PCA Malfunction Intermittent ERROR79 when downloading Using Non HP memory chips Macro s H Thorsagan Norway Self Test HANG no
10. Note This is a paper related pbm such as Paper jams creasing tearing feeding where media quality could be an issue Does Paper meet Paper Spec s Guide Note Although HP does not recommend a specific est With Xerox paper Xerox 80 Europe Only has been found to 80grm Premier operate very well with HP LaserJet Printers Note Inform customer there may well be a paper quality z problem still ask them to use Xerox 80 if pbm ace eee cones returns if OK advise the use of high quality Laser paper agaib paper to resolve problem Note Does paperconform to paper spec guide 5002 Inform Customer of 1801 It is the customers responsibility to ensure Paper Quality pbm paper conforms to paper spec s It is also their responsibility test paper thoroughly before purchasing in quantity Note Escalation may be appropriate depending on the situation If the problems are paper related discuss issue with your local DM amp RCE Remember if the pbms are caused by poor quality paper the ONLY course of action is for the customer to use high quality laser paper to resolve their problems HP neither warrants or recommends the use a particular paper Media properties are subject to change by the manufacturer amp HP has no control over this The customer assumes all responsi bilities for the quality amp performance of media The customer should ensure the paper meets spec s in paper spec guide and then test in quantity to satisfy
11. book UK Only Customer changes from the Try adjusting the physical position of the scanning 2686A to 2686D LJ When unit be aware you may increase the amount print using PREPRINTED paper skews on page See S N 2686A 1 Note there is a that was previously used on the difference between the first printed line on 2686A 2686A it was found the text had when compared to a 2686D The actual physical pape displaced by approximately path length between the printers is slightly different 1 58mm in relationship to the therefore a resolution may NOT be available The preprinted lines or boxes customer may need to compensate by either changing the position of the preprinted images of repositioning laser printer images 2686A D MISCELLANEOUS PROBLEMS MULTIPLE I F PCA s were being replaced MULTIPLE POWER SUPPLIES REPLACED After lower section of printer was disassembled AC Controller PCA are failing Print CRACKING when paper is folded White lines may be seen running through characters where page has been folded PRINT SKEWING amp Paper REGISTRATION problems 1 ENSURE the customer ALWAYS switches ON LJ last and switches OFF first 2 Uf several hosts share LJ via a data switch turn off all power to LJ before switching data switch See S N 26864 8 3 Has the lower section of the printer been removed from the base section recently If so check that the two brown amp blue IF Sv supply wires have not been punctured
12. etc without resolving the problem By changing getting this error mid print from internal font 12 to printer default it provided Mike Duthie Aberdeen the solution to this problem New Info LJIID 3 11 LIW TIVUDALD DELAMINATION of the rear This problem can occur on LID EV UD amp MD s side of page near the leading top 1 Changing media to a Laser Quality paper that edge There can be two marks which are in line with the two ecentric cam rollers mounted on the I P Pick up Assy The problm can be intermittent Updated Info LIT HI UD THD Eroneous lines appearing on XY Chart printing in HPGL2 see example opposite The problem appears the more complex the XY Chart plot is LID LJII intermittently drops OFF LINE G Clark Leeds Jan 94 COMPLETELY DEAD No Display ERROR 12 this fault could be Intermittent Updated adheres to the Paper Spec s Guide always resolves this problem 2 Replace both the Separation Pad amp VP feed Assy 3 If customer is NOT using extremely light or heavy paper 161b or 361b remove one of 2 tension spr gs P N RA1 3871 000CN on Reg Assy Remove the spring on the side that delamination occurs DO NOT remove both springs Supported by Div 4 If 1 amp 2 do not work for you try this unsupported method Remove high spot off the 2 ecentric cams these cams are part of the VP feed assy NOTE If the paper is of extremely poor quality items 2 3
13. these lie in the base section ENSURE all wires are returned to their correct position at reassembly See input above Multiple I F s being replaced item number 3 Replace PT1 AC Mains transformer Toner comprises of pigmented plastic material and iron oxide When subjected to high temperatures these individual plastic particles become part of a larger plastic image on the page When the page is folded the plastic must give in some way If the printed image is well fused into the paper the resulting break in the plastic will NOT be very apparent However if the toner has NOT been able to penetrate the paper fibres the Crack in the plastic image will be amplified A white line will be seen through image To Minimise 1 Ensure paper meets ALL Paper Specs see guide 5002 1801 In particular pay attention to the smoothness 100 250 Sheffield and or Wax Pick gt 11 Dennison 2 A lighter Density setting will ensure less toner is used thus minimising problem 3 A lighter character stroke may also help Reference Service Note 2686AB AU 2 Acceptable Skew is 158mm over 260mm feed from Cassette tray 1 Replace Registration assy check that white nylon rollers turn freely 2 Is media within spec s for this printer 3 Replace Paper cassette tray 4 Laser scanner Unit misaligned See Service Note 2686AB AU 2 TRAILING EDGES OF ENVELOPES Wrinkled as it passes through fuser assy Customer printing BOTH
14. 8 Drive chain and gear wear 9 Out of focus laser failures 10 Switchback Friction Positive drives 11 Font Cartridge Magazine mod 12 Front Panel Key Cap Replacement 13 Duplex Holding Tray LED 144 Toner Waste LED Hereis a list of items which you should also have available when going onsite SERVICE MANUAL 02684 90903 2nd edition complete PAPER SPECIFICATION GUIDE 5954 8953 REAM of standard white Laser Quality photo copier paper Xerox 80 premier has always worked well with these printers Order up several copies of the paper spec guide for the office and give a copy to customers with paper problems Remember to always test out the printer with standard white Xerox 80 photo copier paper whenever the customer s paper is suspected Other documentation OPERATOR sMANUAL 02684 90901 TECHNICAL REFERENCE 02684 90904 Please Note that all Paper Jams or Error 13 x problems refer to the Paper Path part of this section of this manual 10 1 PRINTERDOOROPEN when door are actually closed When opening LH door get Error 62 10 2 OUTPUT DOOROPEN 11 3 ADD PAPER to paper Deck Using PDX Tray 13 1 Paper Jams often preceeded with 25 3 MISPRINT Failure occurs when PDX runs out of paper of the door is open ERROR 25 3 MISPRINT Intermittent ERROR51 BEAMDETECT DETECT MALFUNCTION on power up ERRORS1 BEAM DETECT MALFUNCTION Intermittent The DC Controller PCA had been replaced connectors J 124 on the
15. Always in direction of paper movement Image very light in in this area BLANK PAGES 1 Empty toner cartridge 2 Has seal been removed in toner cartridge 3 Replace Transfer corona wire broken 4 Replace HVPS 5 Replace DC Controller PCA BLACK PAGES J Replace EP Toner cartridge 2 Replace HVPS 2686A D PRINT QUALITY PROBLEMS Con t Sharp THIN LINES Horizontal Lines across Page RANDOM GAPS between consective lines across page THIN VERTICAL BLACK LINES STRIPES down page THIN VERTICAL WHITE LINES STRIPES down page BANDS Down page Fuser Rollers scored PRINT SKEWING amp Paper REGISTRATION problems STAINS on REAR of PAPER EP Cartridges DEGRADING extremely quickly of found to be D F S on arrival I Replace Scanning Assy 2 Replace Laser Unit check laser power 3 Replace DC POwer Supply Main Motor Dvr PCA Faulty brass drum drive gear the centre collar was protruding which prevented the silver pin locking in thd end of the EP cartridge This resulted in the drum stopping intermittently I Is Fuser Cleaning Pad dirty Replace if necessary 2 Scoring on fuser roller replace if necessary 3 Scoring on EP Cartridge try another cartridge I Replace Toner Cartridge 2 Dirty Fuser Cleaning Pad 3 Dirty Transfer Corona wire 4 Check for obstacles or O P mirror contamination in laser beam path Laser Shutter 5 Replace scanning assy Scoring is normally caused by a bui
16. Con t MARK ON PAPER in line 1 Separation belt installed upside down with SEPARATION BELT 2 Dirty Separation Belt 3 Dirty Separation Roller 4 Replace Toner Cartridge GHOST CHARACTER on the Overfilling the paper tray can the pick up rollers to 43rd line drag on the paper causing motor to slow down causing EP Cartridge to stall slightly Causing inproper transfer of printed data from drum to paper LIGHT IMAGES 1 Adust Print Density Dial 2 Try Laser Quality Paper 3 Replace Transfer Corona 4 Check Laser Power Laser Checker Tool 5 Replace HVPS 6 Replace DC Controller PCA 7 Check Drum Sensitivity switches RANDOM LIGHT Clean centre of large brass drum drive gear PATCHES over the page BEWARE do not damage or lose spring in the or GRADIENT from left to centre of this brass gear night LIGHT PRINT ON RHS I Due to a missing or loose earth connection on side of paper in the diection of 26864 situated near the RHS hinge as viewed paper movement from the front of the printer 2 Missing Doctor blade pin in EP Cartridge replace EP Cartridge Have not seen this problem for a long time 3 Replace Varistor PCA there may be differences of output i e narrow bands of dark print at the far RUS whereas a missing doctor blade pin will not LIGHT AREA bottom RHS Replace Feeder Guide Assy and possibly the and irregular Transfer Corona LIGHT PRINT in same Clean Optics Exit mirror to Drum position down page
17. DP DP Printer New Fusing Assy Component Incompatibility LJIP Update for LIMP Service Personnel Cannot find reference to this Service Note IC301 on Scanner Motor Assy may overheat and cause ERROR 52 LJP DP IMP Printer New Fusing Assy Component Incompatibility 4 3 LILIP LIP FAL Please note that all Paper Jams or Error 13 s robles refer to Paper Path part of this section of this manual 02 WARM UP CONTINUOUSLY ERROR 12 very intermittent ERROR 12 from Power up Updated When continuous Self Test 04 is used on PCLS printers LMD ERROR 20 may occur LJIP Intermittent ERROR 41 June 92 LJIIP ERROR 41 ERROR 50 or Printed O P is not Fusing correctly Oct 90 Fault traced to a bad wire connection on J209 of DC Controller PCA namely pin 1 This is the 24V to Replace Density PCA problem temporary cleared by tapping on this PCA HPGL2 vector commands used on Self Test and the powered down more RAM may be available therefore ERROR 20 may take longer to appear Note This is NOT an Error no further action is required prevents static discharge from fuser roller See Anew fusing assy is now available and is compatible with the LJIP LIDP amp LJIIP with the exception of the ORIGINAL fusing assy used in the LJIP See Service Note 33471A 02B for detail paper gets out of synch with the image system 2 Check paper is feeding
18. Due to the 2nd pass of the paper through the EP Drum area paper not separating from drum Note May occasionally PJ on 1st pass 2 Replace Pretransfer Corona 3 Replace HVT3 PT SE Power Supply RANDOM PAPER JAMS SIMPLEX or DUPLEX The engine drive chain had stretched to the point where the bottom section of the chain was interfering with the top section See Service Note 2684 8 13 1 PAPER JAMS but paper clears printer before jams occurs John Watson Aug 93 New Info 13 1 PAPER JAMS unable to clear except by switching printer OFF then ON again It was also noted that the gap between paper moving through print Engine increased Replacing Stretched Chain and associated gears cogs at rear of print engine resolved problem Faulty RH door Interlock switch DC Controller was not reset when door was opened closed which is necessary when clearing PJ s 5 35 2684 Print Engine Area Con t PAPER JAMS in DUPLEX and or in FUSER AREA In Duplex Mode Leading Edge of Duplex page damage damaged small nicks which line up with separation pawls in Fuser Assy PAPER JAMS SKEWS as paper EXITS the DRUM area Occurs about every 5 sheets from PDX very intermittent from lower tray no PJ s from upper tray PAPER JAMS BETWEEN FUSER amp DRUM Paper pauses or twists just before entermg the Fuser rollers Most times paper stops prior to Fusing rollers but
19. ERROR 13 Paper Jams and Tearing RHS of Sheet Caused by small steel tab Far LHS as viewed from front on paper cassette tray If this is bent down it will cause paper jams Correct by straightening this metalwork on the Paper Cassette tray False ERROR 13 or Paper Out or Manual Feed problems Paper out flag becomes wedged arising to conditions described Fix was to reinsert LH end of paper flag in its pivot position ERROR 13 when using FOOLSCAP media Leaves approx 1 inch of paper in the fuser unit As this paper is a non standard size for the paper trays it can only be realistically fed via manual I P Ensure the escape sequence to select Legal Size paper is implemented ERROR 13 from Upper Tray Only Graham Stead UK Feb 95 LITIID Replacing the following parts resolved this pbm not sure which part actually fixed pbm 1 Upper Main Motor amp Drive assy Fig 8 11 item 1 amp 3 2 Upper Feed Drive assy Fig 8 12 iten 1 3 24 LJT MV IIDATED PAPER PATH PROBLEMS IMAGE Moving up or down the PAGE perhaps up to 12mm Guy Picton Nov 94 LINE SPACING between LJI amp LJU DIFFER Faulty Registration Oct 94 IMAGE SKEWED Oct 94 SKEW PROBLEMS Top and bottom margins only SKEWED by 5mm at the top of the page LJHD DELAMINATION of the rear side of page near the leading top edge There can be two marks which are
20. HINTS to determine if a jam is in the DUPLEX area ie set SW5 amp 6 on the PD DU CONTROLLER PCA to ON a display code of zero indicates jam is NOT in the DUPLEX otherwise match the code to the Jam Location Table to find out where in the DUPLEX the jam was detected See A at the end of this section 2684 PDX Cassette A rea PAPER JAMS IN THE 1 One of the silver c comer tabs ni this case the LHS PDX PICK UP AREA was sticking up This caused a sheet of paper to twist ie paper skews as it is around the raised tab instead of flicking over it as it picked Sometimes there is is picked To view these tabs open the plastic door no jam but the print is insert the inter lock and as paper rises it will stop skewed excessively on the with the comer tabs resting on the two imner comers page If these tabs are now raised they should fall freely onto the paper stack In this case the LH tab was bind ing against the paper stack and had to be bent away These tabs are riveted to side plates 8 amp 9 in Fig 8C 03 of the manual 2 RH corner tab sticking up Remove RH plate and insert a spring vertically from top of tab to indenta tion below The bushing return spring from the Switchback upgrade p n FS1 2370 000CN stretched out provided suit able tension 3 Paper deck too high The top sheet was touching the belts which drive the pick up rollers which caused paper to skew as it was picked Perform the UPPER LIMIT TRAVEL adjustment on
21. Horizontal lines down page LJIIID Feb 95 Vertical White Streaks Oct94 THIN Vertical DARK Black Streaks Oct 94 BLACK LINE down RHS of sheet Pencil Thin BLACK LINE down page appears on Text sent from host or Self Test or Print Engine Test May be difficult to see on Print Engine Test the line will appear bolder LJIID 1 Repace EP Cart 2 Check connections on EP Cart amp HVPS connector 3 Replace AVPS or AVPS to DC Controller cable 4 Replace Laser Scanner assy or Laser Scanner to DC Controller PCA cable I Defective or improperly seated Fibre Optics cable 2 Replace Laser Sanner assy 3 Replace DC Controller PCA 4 This applies to LJU amp II ONLY Replace Laser Scanner cable RG1 0908 000CN Replace RGI 0908 000CN Laser Scanner cable See Service Note 33440A 09 Some of these horizontal Black lines were pencil this others were approx 1mm wide In some examples these had lines across page which appeared all down the page In other examples only a few lines appeared Replacing the Laser Scanner to DC Cont PCA cable resolved pbm 1 Empty Toner Cartridge 2 Dirty Transfer Corona 3 Dirty Beam to Drum Mirror 4 Replace Laser Scanner assy 1 Dirty Primary Corona Wire 2 Check replace for scratches on EP drum 3 Check replace Fuser rollers amp cleaning pad Clean Corona in EP Cartridge with Cleaning Tool Angle tool to get to extreme right hand edge of the corona wire cleaning slit
22. PS6 faulty though it seemed OK when measured with a DVM 1 Adjust pot on Paper Control PCA this controls the speed of paper exiting the holding tray NOTE these pots are initially factory set 2 Replace Paper Control PCA The latch FA2 5678 000CN which holds down the upper main body on the LHS had a small crack in it It was difficult to see the crack and printer appears to function correctly On applying power it would intermittently give ERROR 12 or the printer would not power up at all This was caused by the motor starting up and causing upper chassis to flex Due to this movement 1 to 2mm this was enough to trigger the interlock When the interlock had operated power is cut motors stpped frame returns to its correct posi tion then power is reapplied This scenario can thus repeat Replace latch FA2 5678 000CN 2 18 2686D PAPER PATH PROBLEMS Con t IN FACE DOWN mode right hand edge of paper has bent over Customer changed from 2686A the 2686D When using paper preprinted paper on the 2686D which was used sucessfully on the 2686A the text has moved by approximately 1 58mm The printer has TWO PAGES coming out of the fuser assy The 1st page is 25 to 50mm in front of the 2nd page Customer printing BOTH SIDES of the Page or DUPLEX printing This may cause paper jams paper feeding or print quality problems Customer REFEEDING paper not two sided printing PAPER JAMS MISFEEDS SKEWING cau
23. Problems Manual Paper Feed Problems LJIVIIID Powered Envelope Feeder Problems 3 1 The Classic LaserJet Troubleshooting Manual Contents Page Section 4 Booklet Organisation amp Service Notes Faults with Error Numbers Miscellaneous Problems Print Quality Problems Paper Path Problems Optional Paper Tray Problems PostScript Problems 4 1 The Classic LaserJet 2000 Troubleshooting Manual Contents Page Section 5 Booklet Organisation Service Note List List of items the CE should Always take onsite Manual Part Numbers 2684 Faults with Error Numbers 2684 Miscellaneous Problems 2684 Print Quality Problems Paper Path Problems PDX Cassette Duplex Area VP Paper Jams Print Engine Area Paper Path LED Identification PDX Duplex Unit Troubleshooting Hints using LED s 2684 Scope Elimination Differences between Switchbacks Friction v Positive Drive Running a Self Test Page b CE Mode Paper Path Test c Factory Run In Mode Paper Path Test This manual is designed to help CE s and Call Qualifiers in their goal of providing data to help quickly resolve LaserJet or JumboJet problems Most ofthe problems cited are faults that have actually occured in the field and many of these may not be included in any service manual This book Volume 1 includes all the classic old LaserJets and the LJ2000 These are listed below 2686A LaserJetI 2686D LaserJet ID 33440 LaserJet
24. Sealing tape not removed from EP Cart 3 Brokem Transfer Corona See S N 33440A 6 4 Are connections on EP cart amp HVPS damaged corroded dirty or missing 5 Replace HVPS or HVPS Cable to DC Controller 6 EP Cart Drum not rotating 7 Replace Laser Scanner Assy or Laser Scanner to Dc Controller cable 8 replace DC Controller 9 Bent top cover hinge brackets 1 Replace Transfer corona See Service Note 33440A 6 Disconnect Pink sleeved wire on HVPS to ascertain if image is on the drum 2 Top hinge badly bent no mechanical connection to drum from the main gear train Replaced the two lid hinges 3 Replace DC Cont PCA Not tuming on HV system use Service Tool PCA to verify LED on 4 Replace LJ Drum Drive gear RS1 0105 000CN 1 Check cable from DC Controller PCA is fully inserted into connector at theOptics assy J401 2 Replace DC Controlier PCA 3 Replaced Optics to DC Controller Cable Replace Transfer Corona EP Cartridge Drum Moving due to damaged printer Drum Drive gear RSI 0105 000CN This is internal to the LJ not part of EP Cartridge Aggravated wear of this gear can be caused by the use of NON HP Toner Cartridged Refilled Replace this gear 3 18 LIV HITIDAMD PRINT QUALITY PROBLEMS Con t BLACK Pages printed Oct 94 Random Horiontal BLACK Lines Oct 94 THIN LINES across page intermittently can be associated with intermittent Error 41 51 amp 52 s Many BLACK
25. local network cannot use this printer until message is cleared This is NOT a problem with the LJII When motor tums it makes a loud grinding noise very similar to gear meshing pronlems All mechanical parts were replaced Replacing the DC Power Supply fixed this problem in the LJHI amp LJIIID This could occur on the LJH amp LIDD printers This failure can occur with the use of NON HP Toner Cartridges Some of these cartridges use material in their drum drive gears that is incompatible with materials used in the LJ drive gears The result is aggravated wear and results in premature failure of the LJ drum drive gear P N RS1 0105 000CN Replacing Lower Fan resolved this problem Developer Bias constantly ON due to a S C on ribbon cable J211 between 6 and 7 DC Controller to HVPS cable Replace P N HVPS Cable RG1 0906 000CN Toner comprises of pigmented plastic material and iron oxide When subjected to high temperatures these individual plastic particles become part of a larger plastic image on the page When the page is folded the plastic must give in some way If the print image is well set into the paper the resulting break in the plastic will NOT be very apparent However if the toner has NOT been able to penetrate the paper fibres the Crack in the plastic image will be amplified A white line will be seen through image To Minimise 1 Ensure paper meets ALL Paper Specs see guide 5002 1801 In particular pay a
26. occassionly a sheet is partly in the fuser or halfway im the Stacker assy In Simplex mode 13 1 PAPER JAM under EP Drum area every 2nd or 3rd page FALSE PJ s in FUSER AREA Intermittent Flickering of PS3 front panel LED Intermittent CREASES down page in direction of paper movement direction also slight skew of paper can be observed as paper transitsfrom EP area to Fuser assy Most noticable in DUPLEX New Info Fault due to Revision 7 firmware in PDX This revision stopped the PDX clutches seizing but also affects movement of paper through the PDX feed rollers this caused the Duplex leading edge damage Service Note 2684 02 gives details for Rev 7 to resolve PDX clutch seizing problem but please note this does NOT affect all printers The fix is to install PDX firmware REVISION 8 Small hard rubber substance stuck to one of the REGISTRATION rollers Removing resolved problem The lower paper guide was found to have pips of solid toner on the ridges of the guide These were only visible when the guide was removed amp held to the light As the paper entered the Fuser the leading edge would catch on these pips slowing the progress of the paper down or twisting it see item 29 Fig 8a 36 page 8a 69 Registration Clutch stiff in this case clutch was cleaned amp oiled Replacing this clutch may be necessary 1 Fuser PS3 sensor is mounted on moveable bracket and can be adjusted to prevent false sensor puls
27. page 6H 43 to lower paper deck 4 Paper deck too low The top sheet is not snugged up to the silver corner tabs but lies a short distance below This causes paper to skew round the RH tab Perform UPPER LIMIT TRAVEL adjustment to raise the paper deck Page 6 129 5 19 PDX Cassette Area Con t PAPER SKEWS Paper Jams intermittently FROM PDX approx every 50 500 pages PAPER JAM IN PDX using 3 amp 4 Holed Paper PAPER JAM when using PDX or DUPLEX paper jams in feed rollers of PDX Using PDX TRAY 13 1 PJs often preceded by 25 3 MISPRINT Failure occurs when PDX runs out of paper Print image appears SKEWED or PAPER JAM 13 1 occur from PDX ONLY Vie Beveridge SOF Uneven tension between PDX registration rollers due to a loose pivot pin plate Fig 8C 03 page 8C 9 screw K63 which secures item 14 was loose The problem was rectified by tightening the screw Adjust Tension of Roller Chain The LJ2000 does not support paper with cutouts Problems occur when paper is loaded in the PDX with the holes to the left Marginal success MAY be obtained using cassette trays 1 The PDX FEED ROLLER CLUTCH outer casing had jammed Try turning the feed rollers by hand If they are stiff then either the feed roller clutch blue plug or brake clutch has seized The fix is to ensure S N 2684 2 is implemented new style clutches and PD DU firmware was rev 07 is now Rev 08 2 When Feed and brake clutches were replaced
28. print on the leading edge of duplex page New Info IN DUPLEX PAGE NUMBERING NOT SEQUENTIAL i e page 3 on one side page 6 on he other Factor of 3 page difference Blank Page alway be a be in Vert Pass after print job is complete DUPLEX JAMS as paper enters Duplex area Also Stacker Power Supply can be heard to be ticking or erratic movement of Stacker O P Tray PAPER JAM when using PDX or DUPLEX paper jams in feed rollers of PDX Adjust Trans Sep Corona amp EP Drum gap as per previous input This gap is too wide causing this problem see page 7 14 of service manual The con verse of this is true if this gap is too tight creasing of the paper in the direction of paper movement may occur Faulty Double Feed Detect Assy either requires adjustment or replacement This fault is caused by the DED assy allowmg 2 sheets of paper through simultaneously This ends up in the Duplex Holding tray undetected thus giving this problem Therefore this extra page in holding tray is fed through and accounts for this strange problem Faulty Stacker Power Supply Is power supply making a ticking noise 24v normally fails 1 The PDX FEED ROLLER CLUTCH outer casing had jammed Try turning the feed rollers by hand If they are stiff then either the feed roller clutch blue plug or brake clutch has seized The fix is to remove the clutch dismantle clean with alcohol and replace Altematively if there is excessive
29. s have in the past replaced both Formatter and DC Controller PCA s this will fix in the short term but will fail again when the page counter reaches 2047 This is NOT a HP problem the customer MUST contact Pacific Page A temporary workaround is I Reset page counter to zero via Service Mode remove Pacific Page PS cartridge to do this 2 Use HP PS cart 33439Q or C2089A LJIIIP only This problem should be resolved by now but may show up occasionally 4 13 LJI1P LJ111P PRINT QUALITY PROBLEMS Con t Text looks BOLDER in a band down RHS of page This band is approx 25mm wide and in its worst case may appear also with a band of Bandground A band may also appear down LHS of page Updated TOPS amp BOTTOMS of characters clipped This occurs every 19mm down the page Ron Wallace Manchester New Info Print CRACKING when paper is folded White lines may be seen running through characters where page is folded Updated Normally strong sunlight causes this problem Position printer well away from this window etc O00000000000000000000000 DDDDDDDDDDDDDDDDDDDDDDDD QQQQQQAQQQQQQAQQQQAQQQQQQ HHHHHHHHHHHHHHHHHHHHAAHA DDDDDDDDDDDDDDDDDDDDDDDD CCCCCCCCCCCCCCCCCCCCCCCCCC This problem initially looks like a repetitive roller problem Replacing the Formatter PCA resolved this problem Toner comprises of pigmented plastic material and iron oxide W
30. the problem 3 A lighter character stroke may also help Check iflower tray is a SECURE SOURCE Turn OFF secure source via front panel Ifthe leading edge was observed closely fromthe rear of printer towards the front the paper had picked up toner This toner smudge appeared mainly on the rear side of page and gradually get worse towards the rear of the printer Also theimageis Skewed compared to the leading edge of the paper This problem was resolved by adjusting BLOCKS on item 66 page 8a 14 Fig 8a 4 In this case the rear block was ajusted to resolve both the Toner Smudge and Skew problems As above refer to HP general statement on Duplex printing v Simplex in HP Reference Guide Green Book section 3 5 12 2684 MISCELLANEOUS Problems Con t PAPER JAMS MISFEEDS Interleaving where a variety of paper is placed in the SKEWING caused by paper tray is not recommended by HP This practice is customers practice of likely to lead to Paper jams amp Misfeeds For the general INTERLEAVING different HP statement on Jnterleaving Paper please reference types of paper in paper trays HP Reference Guide Green Book section 3 5 13 Repetitive Marks on the page print defects atregular distance apart INTERMITTENT FAINT PRINT 1 15K pages across entire page Less frequently a BLACK page is printed NEW Printer Print FADES towards front of Printer FAINT AREA s on leading edge of Duplex page Approx 1
31. together the CE installed theses clutches in the wrong position i e feed clutch was in the Brake clutch position and visa versa Switches SW1 5 amp SW1 6 on the PD DU Controller PCA are left in the UP ACTIVE position These switches are used to locate Duplex jams page 7 59 and should be normally DOWN OFF The movable plate the paper is loaded onto in the PDX was bent on the LHS this appeared to make the elevator chain slacker on that side Straightening of this plate corrected problem 5 20 2684 EDS Stacke PAPER JAM IN UPPER STACKER WITH PAPER ENTERING MAIN TRAY Occurs during paper path test and MISPRINT PAPER JAM IN UPPER STACKER The leading edge stopsjust short of the delivery rollers items 9 page 8B 15 FACE DOWN STACKER JAM 13 2 paper stops just before it arrives at PS4 in the upper stacker area Lee Williams Billericay PAPER JAM 13 1 in FDS Paper begins to exit fuser but not picked up by switch back and crumples TICKING Noise coming from STACKER area Paper appearing in FACE UP mode in O P stacker in SIMPLEX mode Paper should in simplex mode go down into the Switchback then up to the O P stacker PAPER JAM IN FACE DOWN STACKER Paper never enters Sw back With covers off all shafts m upper portion turn very slowly The paper had been incorrectly sent to the MAIN TRAY instead of the ERROR tray This was due to the SUB TRAY DEFLECTOR SOLENOID SL4 not func
32. wear replace the clutch See service note on PDX UNIT IMPROVEMENTS 2684 2 and order a new FEED CLUTCH FH7 5055 040CN amp ROM kit 02684 67911 2 Both feed and brake clutches were changed together but the fault was still present Problem was due to the clutches being fitted in the wrong positions ie feed clutch in the brake position brake clutch in the feed position NOTE Firmware Revision of PDX CPU PCA is now Rev 08 not Rev 07 as service note 2684 02 states Do not upgrade from 07 to 08 unless you have problems as outlined on page 5 31 PAPER JAM s in Duplex and or in Fuser area 5 29 Duplex Area Misc Problems Con t PAPER JAMS in DUPLEX and or in FUSER AREA In Duplex Mode Leading Edge of Duplex page damaged small nicks which line up with separation pawls in Fuser Assy MISPRINTS amp Multiple copies of the same printed page appears m the O P tray ONLY with A3 paper PAPER JAM IN DUPLEX MODE all the time with 13 1 possibly intermittent when in SIMPLEX MODE Updated 13 1 Paper Jams in DUPLEX Mode ONLY Peter Salsbury City Gate Oct 94 Very intermittent 13 3 DUPLEX PAPER JAMS New Info Bob Edwards UKRC Fault due to Revision 7 firmware in PDX This revision stopped the PDX clutches seizing but also affects movement of paper through the PDX feed Tollers this caused the Duplex leading edge damage Service Note 2684 2 gives details for Rev 7 to resolve PDX clutches s
33. 0 2 Oct 94 Check 1 Is paper correctly installed in MP or LC Tray 2 Check Media for paper qulaity problems refer customer to Paper Spec s Guide 5002 1801 3 Is media cut square 4 Worn MP or LC Pick up roller 5 Replace Separation Pad 6 Replace VP Roller Customer printing BOTH This model of LaserJet is a SIMPLEX printer and is SIDES of the Page or not designed for Duplex printing Although this printer DUPLEX printing This can print on both sides this practice is not supported may cause paper jams paper by HP For the general HP statement on Duplex feeding or print quality printing v Simplex please reference HP Reference problems Guide Green Book section 3 LJELP UDP Feb 95 Customer REFEEDING paper not two sided printing ALJIIP LIP Feb 95 As above refer to HP general statement on Duplex printing v Simplex in HP Reference Guide Green Book section 3 PAPER JAMS MISFEEDS SKEWING caused by customers practice of INTERLEAVING different types of paper in paper trays LITIP LUIIP Feb 95 Interleaving where a variety of paper is placed in the paper tray is not recommended by HP This practice i likely to lead to Paper jams amp Misfeeds For the general HP statement on nterleaving Paper please reference HP Reference Guide Green Book section 3 4 9 LJP LJ111P PRINT QUALITY PROBLEMS Repetitive MARKS appearmg 1 94mm 3 7inches
34. 2686A 5 Change to Level 840606 Firmware 2686A 6 LaserJet Plus Options 200 amp 220 2686A 7A Vertical Smear 2686A 8 LaserJet I F PCA Failures 2686A 9 Correcting Errors 20 21 22 amp 40 2686A 10 Correct Value for R117 on Connector J107 2686AB AU 1 Voltage Configuration 220 240v 50Hz 2686AB AU 2 Print Skew 2686AB AU 3 Replacement of Lasers DC Controller Compatibility 2686AB AU 4 Difficulty Clearing Error 50 2686AB AU 5 Service Manual changes since publication 2686AB AU 6 2686AB AU 7 LaserJet Plus Options 200 amp 220 2686AB AU 8A Vertical Smear 2686AB AU 9 LaserJet I F PCA Failures 2686AB AU 10 Correcting Errors 20 21 22 amp 40 2686AB AU 11 Correct Value for R117 on Connector J107 Please note that all Paper Jams or Error 13 problems refer to the Paper Path part of this section of this manual 1 Check Laser Power level 45mw PERMANENT 02 2 Faulty Solid State Laser Long waiting 3 Faulty Scanner unit 4 Check fuses on DC PS Main Motor PCA 5 Replace DC PS Main Motor PCA 6 Replace VF PCA PERMANENT 05 1 Faulty UF PCA Self Test ERROR 11 1 Caused by bad Paper cassette micro switch item 36 Fig 8 17 ERROR 11 When Manual In this case the 2686A Plus was mistaken for a 2686A Mode is Selected Std at some time in the past the VF had replaced for a 69004 instead of a 69005 At some time later the customer began to use Manual Mode and this fault appeared LC 11
35. 3871 000CN on Reg Assy Remove the spring on the side that delamination occurs DO NOT remove both springs Supported by Div 4 If 1 amp 2 do not work for you try this unsupported method Remove high spot off the 2 ecentric cams these cams are part of the IP feed assy NOTE If the paper is of extremely poor quality items 2 3 amp 4 may not help at all Replace Paper Control PCA 3 25 LJIVOIID IIID PAPER PATH PROBLEMS PAPER JAMS IN DUPLEX See Service Note 33447AU 03 conceming the MODE INTERMITTENT premature failure of Duplex Drive Roller Clutches Paper jams just prior to reaching the Fusing Assy Dupilexing image may shift up the page LJIID PAPER JAMS as paper begins It was noted that the switchback was slightly twisted to exit fuser into SW BACK on RHS as viewed from front of printer this was area preventing the operation of SL7 Switchback Deflection LJHD LIID Solenoid in the switchback lan Longstaff B ham BLACK bracket on RHS of switchback was correctly positioned to resolve problem Does not Feed from Lower Replacing the DC Controller resolved the feed Tray amp does not FUSE problem correctly Note The problem with not fusing was due to the LJTID LJHID fuser switch on DC Controller NOT installed correctly after its replacement High rate of PAPER JAMS See Service Note 33447A 07 Replace Duplex Drive in DUPLEX mode PJ occurs Roller Assy lower guide with RG1 1345 060CN as leading e
36. 4 to 3 8 inch Duncan Frankland Hat Freddy Olsen Denmark Some Characters FAINT in Scan direction New Info BLOTCHY Backgroundail over page 1 50mm apart Registration Rollers 2 50mm apart Duplex Rollers 3 64mm apart Cleaning Assy 4 100mm apart Developer Assy 5 135mm apart Fuser Roller 6 250mm apart EP Drum Fault was due to grounding problem with HVTI which supplies TRANSFER faint page problem and PRIMARY black page coronas Check the 4 LED ss on HVT1 in this case D107 D106 amp D207 were on but D206 always remained off The lower left hand spring contact of item 73 spring leaf Fig 8A 03 p8A 13 was incorrectly positioned to the left of the corona guide looking from the back The fixwasto removethe spring leaf and then reposition the LH spring contact to the right so that itis pressing against the corona guide 1 Cleaner Blade NOT SEATED properaly 2 Print Engine lower paper guide plate item 67 Fig 8a 4 page 8a 14 was loose due to screw E62 missing 3 Check Height of Primary Corona wires adjust to correct 1 Caused by paper rippling after first page passes through Fuser for the 1st time Try another type of paper 2 Check EP Voltages amp Drum Potentionals 3 Adjust Separation Transfer corona wire height ormove Sep Transfer Corona mounting guide to take corona closerto EP Drum Refer to page8a 14 the paper guide is item 67 which is attached to the Transfer frame item 6
37. 6 by guide blocks item 69 There are 2 guide blocks one at each end of transfer frame To adjust the paper guide loosen screws at each end of the Transfer frame slide the block up or down and then retighten the screw To get at the rear screw take off the rear cover and lower Transfer Sep Corona assy BEWARE if adjusted to close to the EP Drum paper jams may occur Check Foldback Mirror adjustment or replace mirror mount Customer had put NON HP toner ie Xerox into the Developer Assembly Look at Toner coating on Dev Drum it will appear either very uneven or will havea very thin coating 5 15 2684 PRINT QUALITY PROBLEMS Con t BLACK PAGES gt gt Ray Wambold USA Prints completely BLACK PAGES with no white borders F Van Grieken Australia New Info May 94 BACKGROUND prints slightly FUZZY General BACKGROUND all over page Mike McGough B ham BLANK PAGES ruming SELF TEST no errors no image on drum DC Cont PCA had just been changed BLANK PAGES only in Graphicsmode Lotus when connected to an IBM PC FUZZY MARK 5mm wide recurring every 10 5emin direction of paper path DOTS REPEATED every 25em in the direction of paperpath ie once per A4 LETTER size sheet but not in the same place Dot size is unacceptable to the customer CE J Potential sensor was shorted to it s mounting plate item 62 fig 8A 04 p8A 18 by a metal burr A quick test is to remove the one screw at the fr
38. 86D PAPER PATH PROBLEMS 2686D ERROR 13 feeds OK from upper tray jams from lower tray ALWAYS prints 1st page 2nd page is just leaving the fuser assy 3rd page is half way up the rear access door paper jam occurs 2686D When paper is fed from UPPER TRAY one sheet is fed incorrectly from the LOWER TRAY 2686D When labels are fed manually the image loses TOF and also manual I P seems to snatch at label when feeding ERROR 13 2686D after pape exits delivery exit area in face in face up mode or in face down mode This error occurs when paper is about to enter the holding tray area ERROR 13 2686D PAPER JAMS IN HOLDING TRAY AREA Paper entering holding Tray from fuser assy collides with paper about to exit the the holding tray 2686D ERROR 12 Intermittently Updated Andy Cassels Aberdeen Replace registration assy and CHECK quality of the media being used If paper is NOT checked the problem will most likely recur again NOTE Media is known to cause this problem use paper that meets 2686A D Paper Spec s guide Sticky lower clutch possibly caused by using incorrect lubricant Dismantle clutch clean and use light oil to lubricate 3 in One Replace clutch spring and other parts if neccessary DO NOT use grease Ensure Idler roller on the Manual feed assy are aligned with the lower Manual feed roller Bend metalwork on idler assy Page 8 48 P N FG1 2354 000CN to correct Delivery sensor
39. A 03 EARORE LAH gt LOOPBACK ESTERNO STATISTICHE OF RETE RICEZ SENIA ERR FAROR RICEZIONE ERR FORMATO BICEL TRASH SENZA ERR ERR TRAWISEIONE COLLISION TRASA ULTIM COLLIS TRASH RITRADHISE ONS oocoocooooo TATUS NOVELL ETNERNET 802 3 FIRHARE REVISION 00 04 KWOTENADRESSES 08000910280F HETIVEAK NR 3 UNSEKANT JON HOUS MARTE SCHL ANCER SEAVER WANE DES DATEI SERVER CUICKSERVER E A KARTE WICHT BEREIT o3 LAN FEKLER EXT SCWLESFENTEST WETZWERK STATISTIK AX PAKETE SEMLEAN PAKETE RA RAHMEUFENLER TA PAKETE TX KEINE PAKETE TX KOLLISIQUEN TA SPATE KOLLISTOM SEMDEWSEDERHOLUNGEN WOVELL ETHEQUET 802 3 REV MICROLOGICIEL 00 04 ADRESSE BOEVO 080009102807 H RESEAUS ikonu TYPE Of TAAME WOH OU NOEUD Jon MODE SERVEUR FELE O ATIENTE NOH OU SERVEUR FICHIER QUICKSERVER CARTE E G WOR PRETE B ERREUR LAR BOUCLE EXTERNE COMFICURATIOR RESEAU PAQUETS RECUS MAUVAIS PAQ REGUS ERR TRANE MECUES PAQUETS TRANSMIS PAQUETS INTRANSH 7 CHL S ious COLL TARDIVES RETRANSHISSIONS exec eee oe a3 seS OLX JetTest The LaserJet Confidence Test Tool Whatis JetTest JetTest is a confidence test tool the CE can use to quickly determine communications between the PC and the LaserJet It also teststhe functionality of thethe LaserJet Thistest comes on a bootable floppy disk and is very easy to use Why Use JetTest Itnegates the customers application softwa
40. BUSY condition can occur if AUTO CONTINUE is ON and the document is longer than 1 to 2 pages If the page is printed it may result in missing lines shifted text malformed letters Faulty page will be __ _ LJMP LJIIP POSTSCRIPT PROBLEMS ejected and Error will be displayed L a os 33481A LIMP with Postscript installed A 33439P most probably will be installed a LJIP recognises printer asa LJIP requires the Postscript cartridge 33439Q A LJIP 512Kb can also use the C2089A Switchable PS Cartridge See Postscript compatibility matrix in section 1 of this Updated book LJP IMAGE MOVES The problem has been identified down to the NVRAM DOWN page by Approx page count of the LJDIP caused by the Pacifc Page 3 inches This problem can PS Cartridge This page counter does not increment oceur when Pacific Page using this PS cartridge It seems when the counter Postscript plug in cartridges reaches 2047 for some reason the PS Cart believes are used with this printer it has a Legal paper size installed This is why print Printer OK in PCL mode image moves down the page New Info CE s have in the past replaced both Formatter and LIUR IMAGE MOVES DOWN page by Approx 3 inches This problem can occur when Pacific Page Postscript plug in cartridges are used with this printer Printer OK in PCL mode New Info This a similar problem to the Intermittent Error 41 caused by static discharge from fuser a
41. D s may be susceptable to this problem due to power interruptions Ensure customer has a stable AC Power Supply Install Mains Monitor to check out supply Ensure customer has stable AC Power Supply Install Mains Monitor to check out supply If the Optional I O cannot be selected with Page Protect try the following 1 Initiate a 08 Cold Reset by depressing ONLINE whilst powering on printer 2 Set Page Protect to the size of media required 3 Initiate a 07 RESET by depressing the CONTINUE RESET key for 5 seconds 4 Cycle power to the printer 5 Go to 2nd level menu within this menu select YO OPTIONAL NOTE This procedure will reset to factory defaults therefore prior to initiating above obtain copy of Self Test with customers configuration See Service Note 33449A 04 or 33459A 02 this describes a modification to DC Controller PCA to reduce the costs and involves the removal of Fuser switch SW205 When ever this PCA is replaced the CE should pay particular attention to the presence or absence of SW205 A circuit trace MUST be cut if SW205 activating lever is not present See Service Note 33449A 03 open using tool like a hard flat piece of plastic 3mm thick and broad enough to distribute a force across 3 4 cm of cover surface Le 3 5 disc Place between top cover gap near release button and pry open 3 15 LJIID LJHID MISCELLANEOUS PROBLEMS Customer was attempting to print the 1st side in P
42. DC Ctlr PCA and J902B on the DFD PCA had been reversed BEWARE this is easily done Microswitch bracket bent at rear of the switchback Feeder Assy i e open door on LHS to reveal fuser rollers The microswitch in question is on top towards the back or on the left of the switchback looking into the fuser area See service note on SWITCH BACK UNIT IMPROVE MENTS 2684 4 this advises to order a door guide p n RA 1 7035 000CN 1 Invalid paper size selected on PD DU dip switches The only valid sizes are LETTER SW3 1 UP A4 SW3 0 DOWN SW4 1 UP SW4 1 UP 2 DCPS1 in the PDX was tripping when the tray lifted to its working height The button was popping up The cause was a faulty PDX DRIVER PCA also known as a Deck Unit Control PCA Switches Swl 5 amp Swl 6 on the PD DU Controller PCA are left in the UP Active position These switches are used to locate Duplex jams page 7 59 and should be normally DOWN OFF Customer using paper with perforations The perforation area was thicker than the rest of the paper and falsely reported a misprint Has the printer just been installed after having being moved from a cold environment If yes wait 30 minutes for printer to warm up and try again I Foldback mirror out of adjustment Perform adjustment as per the Service Manual page 6B 28 2 Foldback mirror had slipped out of adjustment due to one of 2 metal rubber discs moving out of position These disc are glued onto
43. DU Controller PCA to the ON position enables LED s 1 to 4 FIG 1 on the Display panel to display an ERROR CODE This error gives the location of the paper jam in the duplex area LEDI Duplex LED2 dt y ED _ 7 4s 7 ka Z FIG 1 2684 Front Panel Display There are two ways to use this troubleshooting aid Method 1 After Paper Jam has occured set switches 5 amp 6 on the PU DU Controller to the ON position If jam was in the duplex area an error code will be displayed using LED s 1 thru 4 see above FIG1 The actual location can be verified using Table 1 Two Pings occur 13 3 then 13 1 When complete return switches 5 amp 6 to OFF Method 2 Before Paper Jam occurs set switches 5 amp 6 ON LED s 1 thru 4 no longer function as a paper tracking device they are enabled to an error reporting mode Use Table 1 to identify the area of the paper jam When complete set switches 5 amp 6 to OF F Caution Paper Jam is DISABLED SW 5 ON the duplex will attempt to MOVE paper Damage may occur due to the fact that paper jam is disabled Also it is possible to get more than one error using using this method ALWAYS use the first error code reported 5 39 WARNING NEVER LEAVE SWITCHES 5 amp 6 ON DURING NORMAL MODE Table 1 Jam Location Matrix remon O So o o e Holding Tray Delivery Jam a Delay in aal reaching b Build up ofp an in the holding tray a e Re CIE EE Paper I
44. E TOOL PC4 PRIMARY CORONA PERMANENTLY SWITCHED ON Replace RG1 0906 000CN High Voltage Cable See Service Note 33440A 09 SMUDGES on back side of page EXCESSIVE toner built up around corona 94mm Repetitive print defect that appears on contiguous pages Yellowing amp deterioration of in ternal components may occur SMUDGES down page this This problem exhibits itself as scallops down the page occurs on page 2 which is the These scallops are similar to horseshoes or letter u first page to be printed LJIIID rotated 90 degrees to the norm 1 Clean Static Teeth 2 Replace Transfer Corona New Info SMUDGED ON 3rd LINE of PRINT Caused by a BDT 6 Bin Sheet Feeder None HP sheet feeder attachment to the LJ It can easily be cleared by disconnecting the Sheet Feeder testing LJ as a stand alone printer 3 21 LJIVOVIID IHD PRINT QUALITY PROBLEMS Con t SMUGDED Band with Over Worn Feed Rollers Assy and Separation Pad Print Oct 94 SMUDGES down page this This problem exhibits itself as scallops down the page occurs on page 2 which is the These scallops are similar to horseshoes or letter u first page to be printed LJIID rotated 90 degrees to the norm New Info 1 Clean Static Teeth 2 Replace Transfer Corona After long periods of altemate The combination of envelopes and paper used in the printing from Envelope Tray
45. IT 33447 LaserJet IID 33449 LaserJet II 33459A LaserJet IID 33471 LaserJet IP 33481 LaserJet IIP _ 2684A P D LJ2000 LaserJets manufactured and introduced after those above will appear in later volumes Volume 2 willinclude LJ4 LJ4 plus LJMISi L4Si LJ4L LJAP LJ4V ColorLI and the C30 printers This should be available by May 95 Other Useful Books Etc to Use in Troubleshooting Process HP LaserJet Reference Guide Green Book HP LaserJet Family Quick Reference Service Guide 5961 0716 Pocket Book HP 26864 2686D Combined Service Manual 02686 90920 1 HP 33440 amp 33449 Combined Service Manual 33449 90906 1 HP 33447 amp 33459 Combined Service Manual 33459 90906 F1 HP 33471 amp 33481 Combined Service Manual 33481 90951 1 HP 26844 P D Service Manual 02684 90903 1 Paper Specification Guide 5002 1801 Paper Specification Video PAL 5961 0712 NTSC 5961 0711 1 Note These manuals may be out of production Product History 2686A LIT 2686A LJI 2686D LIID 33440 LID 2684A P D LJ2000 33447 LID 33471 LIMP 33449 LII 33459 LJIID 33481 LJIP C2007A LIIP Cannon Engines C2007A 33481A 33459A 33449A 33471A 33447A 33440A 2686D 2686A 2686A 2684A P D PCL Levels AHP LaserJetsuse Hewlett Packards Printer Command Language PCL This brings all these printers under a common and consistent control structure which will ensure compat
46. LEMS 2686D When labels are fed manually the image loses TOF and also manual I P seems to snatch at label when feeding LOSING TOF when using label paper fed from manual feed input tray NO MANDAL FEED ERROR 11 OCCURS when MANUAL FEED is SELECTED MANUAL FEED Two pages of data printed on same page Feeds one sheet via manual I P gives permanent status ERROR 11 paper out cleared temporialy by powering down printer Ensure Idler roller on the Manual feed assy are aligned with the lower Manual feed roller Bend metalwork on idler assy Page 8 48 P N FG1 2354 000CN to correct I Check quality of Labels Use Avery 2 Replace Manual Feed Assy F G1 2354 000CN 3 Check alignment of manual idler roller on Ensure correct interface pca is installed should be 69005 not 69004 02686 69005 for 2686A amp 2686D serial amp Parallel 02686 69004 for Std 2686A serial I F only Customer not pressing FORMFEED after manually Seeding paper results in 2 pages of data on one page Replace Interface PCA 2 20 megi Peen ae Classic Printers LaserJet II 33440 LaserJet II 33449 LaserJet IID 33447 LaserJet IIID 33459 Booklet Organisation Please Read This section has been divided into 4 parts which are as follows 1 Faults with Error Numbers Error 13 s Paper Jams in Paper Path section 2 Miscell
47. N all the time This forced the paper to arrive earlier to the registration assy This caused the paper to buckle If the paper manages to get through the Registration Assy the image has slipped down the page by 25 to 30mm 1 Replace DC Controller 2 Replace SL Duplex Drive roller Clutch Solenoid The leadmg edge comers are bent back to give the so called Dog Ear effect This is caused by the deflector in the Fuser Exit area A5 paper just happens to coincide with2 of these deflector pawis As A5 paper is not supported the unoffical actions to try are 1 Try 100grm paper straight through 2 Displace manual feed guide on cassette tray cover remove one screw amp allow guides to move then replace this screw The disadvantage of this is the the printed image would have to be offset to compensate LIWA Repetitive marks on paper print defects appear at regular intervals LAL ID II HID BLANK PAGES Oct 94 WHITE or BLANK pages When printing the FIRST PAGE it was BLANK and then ERROR 51 occurred BLANK column down page apprx 6cm from RHS and lcm wide DUPLEX ONLY Dave Wassell S ton BLANK Page LJIID Steve Oakes Cheadle New Info 95mm apart EP Drum 80mm apart Upper Fuser Roller 65mm apart Lower Fuser Roller 51mm apart Toner Cartridge Developer Roller 44mm apart Lower Reg Roller 38mm apart Upper Reg Roller 13mm apart Reg Assy Transfer Roller 1 Empty EP Cart 2
48. New Info Mike Collins Bristol May 94 This only occurs after long continuous printruns The customer print linesin the paper direction movement and in exactly the same position on the page repetitively This problem is caused by the inability of the fuser assy cleaning towel to clear the offset image that will appear on the fuser rollers due to theimage being placed repetitively in the same place There probably is no solution short of getting customer to vary their printing to ensure no repetitive lines are printed over a long period Ensurethe following 1 Cleaning towel doesnotrequire replacement 2 Clean fuser rollers and apply silicon oil 3 Check for correct operation of towel assy 5 18 2684 PAPERPATH PROBLEMS Paper jams Shick occur either in the DUPLEX or STACKER UNIT will almost certainly cause a jam in the PRINT ENGINE immediately afterwards What this means is that if your ears are sharp you will hear 2 pings as the jam occurs first the jam source will flash up ie 13 3 DUPLEX JAM or 13 2 OUTPUT JAM then the secondary jam 13 1 PAPER JAM ie print engine will appear a few seconds later This means that jams in the stacker and duplex can be difficult to detect unless someone is standing over the display panel at the moment the jam occurs to read the first message DO NOT leave in CE MODE as to double ping will not occur YOU HAVE BEEN WARNED Remember to use the DUPLEX TROUBLESHOOTING
49. O Disconnect DC Con t PCA Loads Do Missing epi reappear NO Disconnect DC Con t PCA Grd PIN 7 on the DC PS MTR DVR Module this will bring up the DC Voltages Do Missing Voltages reappear i Replace DC PS Mtr Driver Assy NO Refer to Troubleshooting Error 12 Printer Open YES Replace Formatter PCA YES Replace Faulty Load YES Replace DC Controller PCA Please note for all Paper Jams or ERROR 13 problems refer to Paper Path part of this section of this manual LJIL after Paper Source Error Customers who have many LIII s on local networks such as PC LOAD LETTER amp then purchase LJII s notice when one of the users other users on local network selects an incorrect paper size all other users of this cannot use this printer until LJI are unable to print on it until the printer is message is cleared This is NOT manually reset This is NOT true for the LJII a problem with the LJII PC LOAD A4 continuous Replace Formatter PCA after power is applied to printer Ger O Mathony Dublin New Info LITID UC TRAY EMPTY all the 1 Replace Paper Control PCA time LJIID LITHD 2 Replaced DC Controller 3 Replace size sensor PCB RG9 0605 000CN UC LOAD A4 message This problem occurred on the Upper tray but could continuously Also if the have equally occurred on the LJD LIDI or LIDOD CONTINUE buttom was Two blocks on the LHS amp the RHS had broken off pre
50. P3000 This configuration settings is acheived via the operators front panel Typical settings are SYMBOL SET Roman 8 yo SERIAL BAUDRATE 9600 Default ROBUST Xon ON DTRPOLARITY H Note see Cabling at the end of this 3000 configuration section LaserJet M 33449 IID 33447 WID 33459 These LaserJetshas no status feedback therefore cannot be connected to the HP3000 except via dummy TermType 18 To connect to the HP3000 an optional I O board 26013A is required to be installed in the optional I O port at the rear of the printer This board is no longer available but ESI Excellink may offer an alternative see HP LaserJet Reference Guide Green book page section 7 Set via front panel I O to OPTIONAL LaserJet IIP 33471 IIP C2007 HIP 33481 These printers do not return status and do not have an optional I O slot These laserJets are intended to be connected to PCs only LaserJet 2000 2684A P D Configuration of this printer is acheived via 2 banks of rocker switches on the Formatter board These are accessed through a flip down panel on the RHS of the upper section of the printer Formatter section SWITCH 12 all rockers set to OPEN SWITCH 14 1 OPEN Baud Rate Selection 2 X Baud rate selection 3 X Baud rate selection 4 X Baud rate selection 5 OPEN 6 OPEN 7 OPEN 8 CLOSED Select DTR polarity 9 CLOSED DTR handshake enabled 10 OPEN 11 CLOSED 12 CLOSED Xon Xoffenabled Note to R
51. Roller then Error 13 PS1 sensor located by Separation Pad was installed incorrectly by CE The sensor flag had been installed the wrong side of the roller in this area therefore permanently activated Reposition PSI flag Gear in centre of input feed roller had come adrift of the shaft so providing no drive to rubber rollers mounted on it RG1 1778 000CN Reinstall this gear in its correct position Permanent ERROR 13 after 05 is displayed Solid ERROR 13 when feedin from either the MP Tray or the Optional Paper Cassette New Info ERROR 13 as trailing edge of paper is in the EP Drum area this problem This sensor PS1 is located by the Steve Clarke UK SeparationPad housing New Info LJIP ERROR 13 Paper Jam when feeding from MP Tray Note printer may be new 33471A Paper CREASING may occur on LJIP SKEWING at the top of the page rest of page looks OK PS1 Sensor arm had been installed on the incorrect side of I P Feed Rollers leaving flag to permanently activate sensor BEWARE Install PS1 flag in its correct position check flag spring Paper is just about to enter the Fuser Assy when this paper jam occurs This occurs every time Replacing 1 PS1 input sensor resolved this problem or 2 Small spring on PSI flag has come off Replacing assy that contains PSI sensor resolved Ref SERVICE MANUAL Fig 8 2 paper path door item 4 arm paper gui
52. SIDES of the Page or DUPLEX printing This may cause paper jams paper feeding or print quality problems Customer REFEEDING paper not two sided printing PAPER JAMS MISFEEDS SKEWING caused by customers practice of INTERLEAVING different types of paper in paper trays Adjust spring tension on Fuser Pressure rollers this may help Note envelopes are problematic due to their construction Contact RCE for further informa tion This model of LaserJet is a SIMPLEX printer and is not designed for Duplex printing Although this printer can print on both sides this practice is not supported by HP For the general HP statement on Duplex printing v Simplex please reference HP Reference Guide Green Book section 3 As above refer to HP general statement on Duplex printing v Simplex in HP Reference Guide Green Book section 3 Interleaving where a variety of paper is placed in the paper tray is not recommended by HP This practice ig likely to lead to Paper jams amp Misfeeds For the general HP statement on nterleaving Paper please reference HP Reference Guide Green Book section 3 2 9 MARKS ON PAPER AT REGULAR INTERVALS If marks repeat at regular intervals measure distance between marks to determine where the problem lies Marks 7 375 apart Drum Related 8 0 apart Drum gear Related 2 5 apart Fuser Roller Related Prints in only a small portion of the page w
53. TH ERROR NUMBERS Con t 1 Leave 2686 powered down for at least 10 minutes 2 Alternatively gain access to the DC Controller PCA whilst powered down and put a short across R250 near C235 Also see Service Notes 2686AB AU 4 or 2686A 3 and 2686AB AU 11 or 2686A 10 INTERMITTENT ERROR 50 Possible causes 1 Noisey AC Mains Power Supply The 2686A s are more susceptable to AC mains disturbances than perhaps other equipment Connect AC Mains Monitor Check quality of mains supply 2 Install AC Controller who s P N ends in 040CN suffix 3 Replace Q1 Triac 4 Check for AC Voltages as per below PS MAIN Motor PCA from Transformer These are 33 12 21volts on J501 connector 5 Check if 2686 is configured for 240v 6 Noisey AC mains install mains monitor 7 See 2686A 10 Service Note 8 Replace DC PS Main Motor PCA 9 Replace DC Controller PCA ERROR 52 Replace UF PCA ERROR 53 Replace Laser unit ERROR 60 amp 61 Both these errors can be caused by faulty I F PCA s ERRORS 63 65 amp 67 ERROR 60 65 amp 67 MISCELLANEOUS ERROR s 6X Normally caused by YF PCA Can be caused by very cold enviroments i e temperatures in office may be falling very low over night May give this problem only first thing in the morning there on after will be OK all day Can be caused by attempting to put to many fonts on one page Especiall
54. The Classic LaserJet Troubleshooting Manual Contents Page Section 1 Introduction Otherusefulbooks videos etc LaserJetProductHistory Cannon Engine cross reference matrix Toner Cartridge Troubleshooting process Toner Cartridge Productnumber amp Weight Toner Cartridge life Toner Cartridge Life expectancy in pages Toner Cartridge shelflife Toner Cartridge lotcodeor datecodedecoding Engine test with Formatter PCA de installed HalfSelf test power down procedure VO Cable Information Serial Cables connected to PCs or 3000 9000 hosts HP9000 RJ45 Mux cables configuration Configuring HP LaserJetson HP3000 HP3000 Term Type information Data Transfer Rates Serial amp Parallel Novell Networks 23 I O NotReady Troubleshooting XIO JetDirect Status Page JetTest The CE LaserJet Confidence Test Tool 1 1 The Classic LaserJet Troubleshooting Manual Contents Page Section 2 ea Booklet Organisation amp Service Notes Faults with Error Numbers E i Miscellaneous Problems 211 Print Quality Problems ps Paper Path Problems 2686A amp 2686D Paper Path Problems 2686D Manual Feed Problems The Classic LaserJet Troubleshooting Manual Contents Section 3 K Service Notes 4 SX Engine Refurbishment Kits u Service Test Tool Power Supply Error 12 Troubleshooting Flow Diagram os Faults with Error Numbers z Miscellaneous Problems Print Quality Problems Paper Path Problems PostScript
55. This problem has been resolved by extending this slit on the RHS of the Toner cartridge This was inplemented some time ago Replace Formatter PCA 3 19 LJD UVUDAMD PRINT QUALITY PROBLEMS Con t THIN Line down page it appeared approx 3 inches 75mm from RHS of page Tony Griffiths B ham BLACK STRIPE on RHS of Page Oct 94 On all BLACK page at 6 Ipi WHITE horizontional lines at intervals of 50mm appeared down the page These ALWAYS appear in exactly the same place on the page However at 7 amp 8 lpi it is OK LJHD BACKGROUND Oct 94 BANDS of BACKGROUND Normally down page only where characters are printed Simplex OK 2nd page of Duplex shows this problem GREY BACKGROUND GHOSTING OF CHAR s Only very slightly in the top LH comer of page EJIID ONE COLUMN DARKER or SLIGHT GHOSTING 2 inches from LHS of page Heavy media was causing problem 110 grms using 90 grm paper resolved problem Dirty Primary Corona in EP Cartridge 1 Clean this wire of replace EP Cartridge In this case the FORMATTER PCA replacement fixed this problem Customer Orginal which failed 33449 60001 Rev A Kit PCA which fixed problem 33451 69001 DC 3040 1 Set Print Density towards I to minimise back ground 2 Media out of Spec 3 Is Printer very dirty inside Clean 4 Dirty Primary Corona clean 5 Replace EP Cartridge 1 Check quality of paper 2 Replace Transfer Corona Caused
56. Upper Tray caused this problem Selection of Upper Tray then Lower improved quality envelopes and paper reduced Tray DARK Background problem dramatically SMUDGES appears in the Upper middle part of page Note By leaving the faulty EP Cast s in box or dark Replacing with NEW EP cupboard they will recover and will be usable Cartridge appears to fix problem again for a short period of time and then returns LJIID LJILID 37mm Smear problem a Replace Registration Assy smear manifest itself on A4 paper 37mm from the bottom of the page The text at this point appears bold when compared to the rest of the print PRINTS INVERSE VIDEO 1 DC Controller PCA 2 Replace HVPS EXCESS TONER deposited Developer Bias constantly ON due to a S C on print engine ribbon cable J211 between 6 and 7 DC Controller to HVPS cable Replace RG1 0906 000CN HV cable Faulty Registration 1 Worn Feed Roller Assy Oct 94 2 Replace Registration Assy 3 Check or Replace faulty Cassette Tray 4 Out of Spec media IMAGE SKEWED I Ensure paper amp Paper Tray are installed correctly Oct 94 2 Replace worn Feed Roller Assy 3 Replace Registration Assy 4 Is the Fuser Insulator Pad Missing 3 22 LJTVUI ID TID PRINT QUALITY PROBLEMS Con t FIRST LINE of characters SLIPPING DOWN PAGE slightly IMAGE Moving DOWN page LITD S Davies Cheadle July 94 Character VOIDS POOR FUSING Oct 94 BACK of Page DIRTY
57. ack Lee Williams Billericay New Info Diagram opposite shows how the paper can bypass PS6 sensor when the sensor flag is worn Stiffer paper can also contribute Note The 24v in FDS stacker was measured at 20v Replacing Stacker Power Supply fixed this problem To troubleshoot disable Paper Jam on Stacker Control PCA if jam does not occur then electrical sensor problem In this case no paper jams occurred when PJ occured It was found that PS6 sensor flag was wom As paper moved downwards into the switchback intermittently the paper would miss PS6 sensor flag due to the combination of wear of the flag and the bend the paper is trying to negotiate This LJ2000 had printed 4 million images Check also that SL5 deflector gap is set to approx 2mm To resolve this problem PS6 sensor flag was replaced Switchback Guide Plate Upper Da Paper Direction Worn PS6 Sensor Lower Guide Plate See Page 5 38 for detailed differences between Friction and Positive drive Switchbacks Note If you are experiencing persistent paper jam problems in the Switchback consider if L2000 has Friction Drive switchback upgrading to a Positive Drive switchback See service note 2684A 10 for parts required 5 25 INTERMITTENT PAPER JAMS IN THE DUPLEX area Refer to page 7 26 in Service Manual Cannot CLEAR DUPLEX JAM except by cycling the power ie Duplex doors have no effect When the doors are open in t
58. age is folded Updated 1 New Separation Pad available P N RGI 1912 080CN 2 Try different paper Xerox 80 paper Black reams is known to work well in these printers Please note HP due not recommend paper its the customers Tesponsibility to test for a suitable paper 3 Smoother papers can cause problem Note This problem may still be apparent in a small of printers therefore try the following unsupported actions a Add small piece of rubber in front of Separation Pad housing to damp oscillation of this assy b Try cutting off 1 or 2 tums of the Separation Pad Spring NOT Supported but may work See Main Gear drive assy Fig 8 5 in service manual gears in this area should have a coating of Silicon grease In this case there was none If gears are replaced apply thin coat of this grease See Page 8 12 Fig 8 5 items 10 amp 24 U Shaped bracket on Pressure Fuser Roller on LHS of printer as viewed from the front fails and breaks This allows less fuser nip on Fuser Rollers on LHS Toner comprises of pigmented plastic material and iron oxide When subjected to high temperatures these individual plastic particles become part of a larger plastic image on the page When the page is folded the plastic must give in some way If the print image is well set into the paper the resulting break in the plastic will NOT be very apparent However if the toner has NOT been able to penetrate the paper fib
59. amp 4 may not help at all 1 Use lastest revision of firmware DC 19900430 on the Formatter PCA lt lt lt Erroneous unwanted Data Replacing Formatter PCA seem to resolve this pbm 1 Replace DC Controller PCA 2 Replace Formatter PCA 3 Remove any PCA installed in the Optional I O JetDirect XIO i Data etc is fault resolved If not replace this PCA 4 Replace DC Power Supply If the DC Controller amp Formatter PCA are removed you can check DCPS by grounding pin 7 Remote Enable line on the DC Power Supply if the supply is OK the 5v amp 24v should come up If not replace DC Power Supply Module See Flow Diagram towards beginning of this section 3 13 LUIATAIDAIID MISCELLANEOUS Cont Display goes Blank for very short periods of time Then O Andy Buddle Leeds New Info Intermittently goes DEAD Bill Baigrie SQF Intermittently goes DEAD or loses DISPLAY LJIHD John Holmes Gatwick New Info FRONT PANEL DEAD DC Power still active fans running DATA LOSS or GARBLED data on Centronics port CORRUPT DATA when Soft fonts or downloaded Normal text seems OK This LJ was connected to an IBM PS2 using Centronics protocol FRONT PANEL LED s ON ALL THE TIME SELF TEST Will Not Run All Front Panel LED s on Fuser Assy making a SQUEAKING NOISE NOISY Squealing Chirping LIT Only Top lid switch was found to be momentarily opening causing this i
60. aneous Problems 3 Print Quality Problems 4 Paper Path Problems All Error 13 s Paper jams in this section 5 PostScript Problems 6 LJUD HID Only Faults 7 Appendix Service Notes up to Feb 95 33440A 1 33440A 2 33440A 3 33440A 4 33440A 5 33440A 6 33440A 7 33440A 8 33440A 9 33440AB AU 9 33440A 10 33440A 11 33440A 12 33440A T 1 33447AB AU 1 33447AB AU 2 33447AB AU 3 33447AB AU 4 33447AB AU 5 33447AB AU 6 33447AB AU 7 33447AB AU 8 33447AB AU 9 Parallel VO Incompatibility Shim Under Laser Scanner Unit Rubber Foot RS 422 Operation Laser Power White Pages Replaceable Ozone Filter amp Housing NTF Rate of the LJ Interface PCA Error 41 50 51 or 52 Error s and cable P N s Error 12 amp 55 connected to Vectra ES CS ES 12 or QS using 220 240v Lubrication of Fuser Assy Ground Contact Upper Cooling Fan Fuser Assy Potentional Safety Concem Internal Cable replacement AC Power Module Incorrect P N Lubrication of Fuser Assy Ground Contact Replacement of Duplex Drive Roller Clutch Packaging the LJD for Shipping Printing Labels in Duplex Mode is NOT supported Upper Cooling Fan Duplex Paper Jams HP26013A Status readback O Fuser Assy Potentional Safety Concem 33447AB AU 10 Light Brown Oil Like Stain on the Front Side of a Duplexed Page 33449A 01A 33449A 02 33449A 03 33449A 04 LaserJet II Update for HP 33440 Personnel HP26013AStatus Readback I O Optional VO PCA Opening
61. anging b Attach the RF probe input to the beam detect test point on the DC Controller TP101 and the ground lead to TP102 c Adjust the foldback mirror for the peak DC voltage on the meter See the chart below to correlate the probe readings to the peak to peak signal seen with a scope These values can be used to ensure adequate laser beam levels and for troubleshooting Scope peak to peak reading RF Probe output DC Volts no beam noise level to 2 volts PP 0 0025 to 003 Volts 0 4 volts PP 0 017 Volts 0 6 0 067 0 8 0 153 0 9 0 220 1 0 0 260 1 20 0 350 1 40 0 461 1 50 0 512 1 60 0 600 1 85 0 764 The 34301A RF probe should be in the kit with the normal 2684 tools some of which also require the use of a voltmeter This new procedure should save the CE s the time and effort required to take and setup a scope at the customer site Please contact me if there are any questions or problems in using the above information John Yelmgren MSR CEC 891 0292 5 42 LJ2000 How to Identify a Friction Drive or a Positive Drive Switchback Friction Drive Positive Drive 1 Serial Number lt 2913J02862 1 Serial Number gt 2913J02862 2 Deflector Roller RF1 0328 040CN Page 8b 22 item 64 has black tyres on its rollers 2 Defector roller RF1 2288 000CN has solid Tollers a white plastic material 3 Look at all rollers in switchback you will observe that many are NOT directly driven gear
62. ansfer Corona 3 Replace HVT3 PT SE Power Supply 1 Faulty DUPLEX DRIVE MOTOR A mark was placed on the big green knob in the DUPLEX unit and the time to rotate was measured The bad unit took 3 seconds to revolve whereas a good unit takes 2 seconds NOTE by using the DC Controller PCA switches it is possible to feed paper to the holding tray With a watch time 5 rotations take appropriate actions a 10 secs for normal good Duplex Motor b 12 secs for Bad Duplex Motor 5 27 Duplex Area Misc Problems Con t MYSTERY PAPER JAM DUPLEX UNITS i e When paper jams occur there is paper in the Print Eng amp the Duplex unit but no sheet is buckled When the jam actually occurs there are 2 pings imstead of one On inspection of the holding tray in the DUPLEX unit a sheet is found to bein there about 1 above the holding tray light sensor 13 3 DUPLEX JAM NO LED ON but printer giving PAPER JAM even after CYCLING POWER 13 3 DUPLEX JAM on Power up Andy Suett Billercay Dec 94 LED G LHS flickers on Operators Front Panel causing false PJ s intermitt ently See Fig 7 14 in Service Manual or Stacker Power Supply can be heard to be Ticking or Duplex PJ s can occur RANDOM PAPER JAMS SIMPLEX or DUPLEX In Duplex mode paper creases in direction of paper movement This seems to occur between the EP Area and the Fuser assy Lee Williams Billericay New Info The weight is no
63. apart EP Drum Defect on page at regular intervals see 2 63mm 2 48inches apart Upper Fuser Roller table opposite 3 54mm 2 13inches apart Lower Fuser Roller 4 52mm 2 05inches apart Transfer Roller 6 51mm 2 0linches apart Developing Roller 7 49mm 1 93inches apart I P Feed Rollers 8 38mm 1 5inches apart Charging Roller THIN VERTICAL BLACK 1 Toner Drum scratched replaced LINES 2 Scratches Scores on Fusing Rollers Oct 94 Horizontal BLACK LINES 1 Check Fibre Optics cable may be assoicated with Error 41 or 51 2 Replaced DC Controller BLACK BANDS appear 1 Replace EP Cartridge across page approx 3 7 inches 2 Check for direct sunlight does it occur at one apart around 0 5 inches wide particular time of day May appear whilst printing the first few pages after standing idle for a while Updated WHITE BANDS down the The laser shutter had become adrift and was blocking page the laser beam Heilier Waite Glasgow Replace lower cover assy P N RG1 1773 000CN New Info BLANK PAGE Occurs with No image on EP Drum and Print Engine test was found both Self Test and customers to be working Replacing the Formatter PCA resolved print files New Info this problem lan Longstaff B ham LJHP a Scene Te Oooo BLANK PAGE 1 Seal tape left in Toner Cartridge Oct 94 2 Empty Toner Cartridge 3 Replace Toner Cartridge Interlock Tab 4 Repla
64. blise in a normal office environment for a minimum of 24hr Check the following in the printer operating environment Temperature best between 20 to 24C Humidity Best between 45 to 55 Sunlight Exposure Cleaniness Media Likely to give Paper Related problems HP cannot stop customers using any particular paper but certain paper will give more frequent paper jam or paper path problems Some of these are Paper too thin or too thick see caliper in paper spec s Extremely Shiney or Glossy media Recycled paper that has not be spec ed for LaserJet printers Multi part forms Media that is damaged curled wrinkled ot of an irregular shape Papers that do not conform to A4 Letter etc sizes and may be loose or too tight in paper trays Interleaving different types of media Paper with perforations Some coated papers Coloured papers l Papers too smooth or too rough See Sheffield in paper spec s Papers too dry or too moist Paper with embossed headers Two sided or Duplex printing on a Non Duplex printer Paper that has been refed into paper tray could be from a photo copier Preprinted Papers using low temperature inks or inks that produce hazardous emissions Labels transparencies or envelopes that do not meet paper spec s Labels MUST cover entire backing sheet with NO gaps which expose adhesives to LJ Envelopes with open flaps with adhesive exposed Env
65. by unsupported media shows up particularly well on envelopes Replace Transfer Corona Replace Transfer Corona I Empty Toner Cart 2 Adjust Print Density 3 Media out of Spec 4 Dirty Transfer Corona Clean or replace 5 Replace HVPS 3 20 LUTANATIDATID PRINT QUALITY PROBLEMS Con t FAINT PRINT amp LOSING Replace EP Cartridge HALF OF CHAR s on RHS Parts of print MISSING or The toner cartridge installation label which is attached White area s where text should to the Mirror Shutter Assy inside the hinged lid of LJ be typically at the edges ofthe had become detached and was interferring with the page New Info laser beam on its passsage to the EP Drum This LST TID HI HID problem could occur on any of this printer family Remove offending label RHS Text MISSING or may 1 Empty EP Cart be DISTORTED 2 Bean to Drum Mirror is bent or misaligned Oct 94 3 Bent Top Cover Assy Hinge Brackets WAVEY Print Replace Laser Scanner assy Oct 94 Intermittent POOR PRINT Replace Scanner Assy QUALITY when printer is cold Text appears fuzzy COMPRESSED Characters Faulty EP Cartridge Text appears SMEARED With BLACK BLOTCHES These blotches appear to be 3 7 inches apart running down the page 1 Replace HVPS J601 to DC Controller J211 cable RG1 0908 000CN 2 Replace DC Controller THIS FAULT CAN BE SEEN USING SERVIC
66. ccur when Pacific Page Postscript plug in cartridges are used with this printer Printer OK in PCL mode New Info I rin Replace fuser assembly U Shaped bracket on Pressure Fuser Roller on LHS of printer as viewed from the front fails and breaks This allows less fuser mip on Fuser Rollers on LHS See next item below for more detail Replace Fuser Assy or U shaped bracket Part Number RAI 7587 000CN 1 Bad Transparencies bond laid or linen paper 2 Paper is out of spec refer to 5002 1801 Paper Spec s Guide 3 Replace Transfer Roller 4 Replace Fusing Assy Bush in Fuser Assy breaks Item 7 Fig 8 8 this causes less friction between pressure and fuser rollers on that side of fuser causing creasing It may also cause smudging on the RHS of the page Replace Fuser Assy or U shaped bracket P N RAI 7587 000CN Replacing the Feeder Assy which includes PSI sensor resolved this problem As this sensor was at fault it is not clearly understood why no Paper Jams occured This feeder Assy is located by the Separation Pad housing The problem has been identified down to the NVRAM page count of the LJIIP caused by the Pacifc Page PS Cartridge This page counter does not increment using this PS cartridge It seems when the counter reaches 2047 for some reason the PS Cart believes it has a Legal paper size installed This is why print image moves dowa the page CE
67. ce Transfer Roller 5 Replace HVPS 6 Replace DC Controller BLACK PAGES 1 Replace with HP Toner Cartridges Oct 94 2 Replace HV Contact Assy 3 Replace Fibre Optics cable 4 Replace HVPS 5 Replace DC Controller PCA a 4 11 LJ11P LJ111P PRINT QUALITY PROBLEMS Con t Oct 94 FAINT PRINT Oct 94 BACKGROUND Oct 94 COMPRESSED PRINT maybe compressed on any past of the page It may look like text compressed into a thin line or gaps between lines IMAGE SKEW Oct 94 REGISTRATION Problems Oct 94 This will also give ERROR 51 BLACK Pages with some Thin Damaged or severed Fibre Optics cable Replace the Horizontal WHITE LINES Fibre Optics cable 1 Density Slide set to LHS move to middle position 2 EP Cartridge empty 3 Replace Transfer Roller 4 Replace HVPS 5 Replace DC Controller PCA 6 Media out of spec refer to 5002 1801 Paper Spec s Guide 1 Replace EP Cartridge HP Toner Cart s used 2 Media out of spec refer to 5002 1801 Paper Spec s Guide 3 Clean or replace Transfer Roller 4 Print Density may need adjusting 5 Inside of printer dirty clean Sometimes EP Toner Cartridge freezes which makes the gear extremely hard to turn The shaft on the Drum drive gear continues to tum for a short time even though the rest of the printer is functioning The result is that the drum shaft tums and the drum d
68. correctly from LC Tray ERROR NUMBERS MP PICK UP SOLENOID 1 Replace Density PCA 2 Replace Fan 3 Replace Scanner Motor this motor pulled down 12v line 4 Check PS4 amp PS5 Sensors 5 No Toner Cartridge Installed 6 External Fuser Access Door not closed This is normal for PCLS printer NOT PCLA Due to additional memory it requires The number of pages of Self test which are printed before this error may occur depends on the available RAM If printer is Install 3 Diode Fuser Assy this modified assy Service Note 33471A 02B Install diode kit as per service note cheaper rather than replacing fuser assy This can be caused by the Paper Feed system Have seen this occur mostly from LC Tray This occurs when 1 Does it fail from MP Tray 1 Replacing Fusing Assy 2 Replace DC Controller PCA Note A wavs keep printer powered off for at 10 minutes to allow Fuser Error to reset or Short C212 on DC Controller PCA to ground printer must be turned off LJ11P LJ111P FAULTS WITH ERROR NUMBERS Con t ERROR 51 Intermittent LJIP Normal troubleshoot ing procedure does not resolve this problem Mar 94 ERROR 51 LJIIP LJIIIP Jan 95 circumstances the customer should be billed ERROR 52 Condensation accumulating on Scanner Mirror New Info ERROR 53 ERROR 57 ERROR 79 Trevor Smith B ham ee ee If the normal troubles
69. curs as paper exits the fuser assy to go down into the switchback on route to the Duplexer for its duplex pass OK in simplex mode New Info Tony Savage Billercay Jun94 Aeae L Observation highlighted the fact that the sheet that was being pulled into the switchback far too slowly on its way to the duplexor for the sheets its duplex pass This caused the sheet which was on its way up the the stacker to catch up and jam Interestingly a Duplex Jam occured The resolution was to simply clean rollers in SwitchBack These are the set of 3 together including the deflector roller Page 8b 23 items 64 11 67 Duplex Ar Intermittent DUPLEX JAM 13 3 to 13 1 Double Ping One sheet of paper left in Vert Pass area at PJ Interrogation of PD DU switches shows 2nd PASS paper jam Bob Edwards PAPER JAM 13 1 normally in DUPLEX mode Two pings 13 3 to 13 1 paper in Vertical pass and under the EP Drum when PJ occurs 13 4 PAPER JAMS Intermittent 2nd PASS PJ s in Duplex mode Intermittent PJ in the DUPLEX area 2nd Pass Pick up jam INTERMITTENT DUPLEX JAM 13 3 FOLLOWED BY 13 1 Using Duplex trouble shooting procedure a 2nd pass pick up jam is decoded Typically a smgle sheet may be left in Vertical Pass area Printer has in excess of 2 million duplex images ass Paper Jams 1 Clean all roller in duplex area 2 Replace Separation Rollers use Torque gauge as described on pa
70. des One end of this guide is pivoted but had slipped off bar causing jams Simply gain access to this guide by removing pick up roller and transfer roller Remove screw which holds item 4 to item 7 Re pivot item 4 Bush in Fuser Assy breaks item 7 Fig 8 8 this causes less friction between pressure and fuser rollers on that side of fuser causing creasing It may also cause smudging on the LHS of the page Replace the Fuser Assy or U shaped bracket P N RAI 7578 000CN Front Door hinge loose on LHS therefore less friction on this side compared to RHS thus skewing at top of page approx 2mm Correct problem or replace front door assy 4 17 LJ11P LJ111P PATH PATH PROBLEMS Con t REGISTRATION CHECK See Page section 4 in Service Manual for Registration Adj Oct 94 IMAGE SKEW Oct 94 Customer printing BOTH SIDES of the Page or DUPLEX printing This may cause paper jams paper feeding or print quality problems LJMIPALP Feb 95 Customer REFEEDING paper not two sided printing LJTIP TOP Feb 95 PAPER JAMS MISFEEDS SKEWING caused by customers practice of INTERLEAVING different types of paper in paper trays ALJIHP LHIP Feb 95 UNABLE TO RECOGNISE Lower Optional Tray from either the MP Tray or the Optional Paper Cassette New Info Solid ERROR 13 when feeding Print off A Self test Page TOP Leading Edge to First Dot Row 44 Ltr
71. dge exits the Vertical Reg Guide and catches on Mylar strip on lower guide in the duple drive Roller Assy PJ s incease dramatically using LEGAL size paper LJIID PAPER JAMS in Duplex In Duplex mode the paper enters amp exits the Switch Mode only LJIID Back OK When appox half the sheet is still in the switchback and half in the duplex the paper appears to slow down and stops with a Paper Jam 2 inches from the Duplex Drive rollers Replacing the Upper Duplex Drive assy P N RG1I 1344 000CN resolved this problem There was insufficient nip between this roller and the Lower roller Paper appears SKEWED at 1 Replace Duplex Clutch SL2 and its assoicated the bottom of page only drive rollers Portrait There is a slight kink in the vertical border lt lt lt lt Self Test Border that begins approx 38mm from bottom of page Duplex Only LJIID LJHID See Example opposite Lucy Miles Winn 3 26 LIUIALIUDAID PAPER PATH PROBLEMS Paper DOG EAR s using A5 The leading edge comers are bent back to give the so size paper fed from manual tray j called Dog Ear effect This is caused by the M Brabyn LJ3 Jan 95 deflector in the Fuser Exit area A5 paper just happens to coincide with2 of these deflector pawls As A5 paper is not supported the unoffical actions to try are 1 Try 100grm paper straight through 2 Displace manual feed guide on cassette tray cover remove one screw amp al
72. e Error 21 The formatter cannot catch up with print the print engine Error 22 Buffer Overflow and Error 40 line error Usually caused by system configuration problems i e Baud rate parity 7 8 bits Xon Xoff DTR Normal settings Baud rate 9600 Parity None Bits 8 bits H shake Xon Xoff IN GENERAL REPLACING I F WILL NOT CORRECT ERROR s 20 21 22 amp 40 See Service Note 2686A 9 ERROR 50 Hard Fault Normally caused by the following in order of See note on below preference I The 47ohm resistor on Fuser Safety PCA blown obtain 1 4 watt locally or HP P N is FF 1 3872 000CN See S N 2686A 10 2 Fuser Safety PCA 3 AC Controller PCA new type has 040CN suffix 4 Vibration in transporting the 2686 causes Fuser Bulb to rotate glass protrusion on fuser bulb to point towards thermistor 5 Fuser Bulb should read 9 10 ohms known to blow at 11 ohms 6 Faulty or Dirty Thermistor 7 Bad connections on the Fuser Safety or AC Controller PCA s 8 Replace Triac in Power Module assy 9 Faulty DC Power Supply Main Motor PCA 10 If fault persists replace Fuser Safety AC Controller and Triac together 11 Check if 2686 is configured for 240volts Note Due to error messages being retained in memory for some time afte power down it can fool the Service CE into believing the assy just replaced did not resolve the problem Either do one of two things Continued next page 2686A D FAULTS WI
73. e Area PS1 paper sensor just left of the drum was TRUE due to the plastic guard on the TRANSFER SEPARATION CORONA become detached and wedging itself between drum and sensor NOTE PS1 and PS8 Duplex unit inlet sensor are the only sensors which do not automatically turn ON an LED on front panel when they are TRUE Removing plastic guard and either relocating or replacing resolved this problem l 13 1 PAPER JAM NO PAPER in the printer and NO LED ON but printer giving paper jams even after cycling power PAPER JAM 25 3 followed by a 13 1 PJ Only occurred from Lower Paper Tray no paper was found in printer paper path Bob Hislop Glasgow Paper out incandescent bulb in lower cassette tray was unlit The printer attempted to pick another sheet from this tray after paper ran out causing problem described Replace Lower cassette bulb PAPER JAM 13 1 paper begins to exit fuser but Stacker motor not moving due to low 24v at M2 motor appears not to be picked up 1 Replace Stacker Control PCA by the switchback correctly If this does not work replace Paper Crumples at this 2 Stacker Motor point Updated Steve Goldstone Man 3 Stacker Power Supply PAPER JAM 13 1 normally in DUPLEX mode Two pings 13 3 to 13 1 paper in Vertical pass and under the EP Drum when PJ occurs 1 Replace Transfer Separation Corona
74. e Deflector shaft in switchback Read service note on SWITCHBACK SERVICE SERVICE HINTS 2684 4 Briefly 1 Check the SL5 s back deflector solenoid adjustment p 6G 52 for 2 mm gap 2 Clean perspex rollers with alcohol rubber ones with a damp lint free cloth remember SM4 on Bonsai s 3 Ensure rollers 64 and 11 Fig 8B 10 2 of 2 are free to move in their frame holes Remove burrs and lightly grease If all else fails perform upgrade by replacing bearing hanger springs 2 and bushing return springs 2 and adding a washer to each end o deflector shaft p n RS1 2213 000CN FS1 2370 O00CN and 3050 0893 Service Note 2684 4 4 If all these fail and the printer has a friction drive switchback upgrade to a positive drive switchback as per Service Note 2684 10 It was noted after long observation that PS7 sensor flag was slightly slow in snapping back to its home position after paper has passed by Dismantling this assy and cleaning with alcohol resolved problem Also check flag has not been wom by the constant passage of paper See Page 5 38 for detailed differences between Friction and Positive drive Switchbacks 5 23 2684 FDS Switchback Area Con t 13 2 PAPER JAM IN Switch The signal from PS7 lower switchback feeder back OK in DUPLEX mode sensor was shorted giving no paper all the time Paper enters switchback When paper entered Sw back the roller reverse correctly but mstead of solenoid SL6 wou
75. e of INTERLEAVING different types of paper in paper trays Reference Service Note 2686AB AU 2 Acceptable Skew is 1 58mm over 260mm feed from Cassette tray 1 Replace Registration assy check that white nylon rollers turn freely 2 Is media within spec s for this printer 3 Replace Paper cassette tray 4 Laser scanner Unit misaligned See Service Note 2686AB AU 2 Sticky registration shutter solenoid Replace Registration assy Registration assy jammed replace this part The LJII has a different paper handling path when when compared to the 2686A HP specify that line difference can vary by 2 5mm per page Adjust spring tension on Fuser Pressure rollers this may help Note envelopes are problematic due to their construction This model of LaserJet is a SIMPLEX printer and is not designed for Duplex printing Although this printer can print on both sides this practice is not supported by HP For the general HP statement on Duplex printing v Simplex please reference HP Reference Guide Green Book section 3 As above refer to HP general statement on Duplex printing v Simplex in HP Reference Guide Green Book section 3 Interleaving where a variety of paper is placed in the paper tray is not recommended by HP This practice is likely to lead to Paper jams amp Misfeeds For the general HP statement on nterleaving Paper please reference HP Reference Guide Green Book section 3 2 17 26
76. eizing but please note this does NOT affect all printers The fix is to install PDX firmware REVISION 8 Two sheets of A3 paper feeding simultaneously from Duplex holding tray Adjust or Replace Separation rollers The SEPARATION CORONA was not operating due to a shorted PRETRANSFER CORONA Jammed sheet remember these have a common HVPS supply in separation area around the drum The fix in this case was to clean the pretransfer corona A case for doing proper PM s Also note other assy s that can cause this problem are 1 Transfer Separation Corona 2 PreTransfer Corona 3 Associated HVPS HVT3 PT SE Problem very intermittent occurs every 15 250 pages Paper under EP Drum amp half way out of fuser into switchback The resolution was to replace the HVT3 Separation Transfer HVPS Its a good idea to check the quality of paper being used Extremely intermittently a sheet of paper was trapped by the Duplex paper weight as it returned to its upright home position This problem was due to limited torquein the final exit roller which ejects sheet into the Holding Tray See Page 8 d10 item 77 This roller has a spring rubber washer clutch arrangement There was not enough tension to provide enough torque to push paper onto the holding tray quickly enough to avoid occasional entrapment by the paper weight as it returns to its upright position 5 30 Duplex Area Misc Problems Con t DUPLEX PAPER JAM s This oc
77. el is 3 meters 10ft IAD 16Mz AppleTalk Novell Networks 23 VO Not Ready Configuration Troubleshooting Procedure One of the most common problems the CE will encounter when HP LaserJets are connected to Novell networks is 23 I O NOT READY On most occassions this problem IS NOT A HARDWARE FAULT and the Network Administrator should be able to correct Normally thisisa configuration problem that isthe JetDirect card Installed in Optional VO slot is not recognised by the network Note it is the responsibility of the Network Administrator to configure JetDirect boards into network The following steps should be adopted to check ifthe Novell network recognises the JetDirect card Note The network Administator must have overall responsibility and must be present during this procedure Obtain copy of Note Press button on JetDirect card this is located on this Status Page cards face plate See Status page on oposite page Note Look for I O NOT READY xx on Status page Sub error xx should be cross referenced This will give reason for VO Not Ready Le 16 Not Conigured This information can be found in the HP JetDirect Network I F configuration guide See Statuspage opposite Note Off Status page take a note of the Mode Address Hard JetDirect Hard ware address which is similar to this 080009171812 ware address This Mode Address is unique to each JetDirect See Status page opposite Note With NetworkAdminist
78. elopes with clasps snaps tie strings windows or synthetic materials Envelopes with baggy construction or folds that are not sharp Pounds to Grams Equivalence Table 16Ibs 60grams square meter 20Ibs 75grams square meter 24 bs 90grams square meter 28lbs 105grams square meter 36lbs 135grams square meter Paper Skew amp Registration Specifications The skew and registration specifications for some of the models in the HP LaserJet Family are givenbelow Please note that the LJ2000 register A4 amp Letter paper fromthe long edge all other HP LaserJets are from the short edge These figures assume a sheet of paper with 4 right angle corners Skew y z The skew tolerance for all HP LaserJets is 1 5mm 0 06in along the left hand length Le over a distance of 260mm 10 25 Paper Registration Specifications Registration concerns the position of text onthe paper I 8 0mm 2 0mm x 1 2 2 I 5 0mm 2 5mm x 4 0mm 2mm y 4 7mm 2mm y IID 4 2mm 2 5mm x 42mm 2mm y 4 2mm 2mm y Ill 5 0mm 2 5mm x 6 0mm 2mm y 6 4mm 2mm y IID 4 2mm 2 5mm x 6 0mm 2mm y 6 4mm 2mm y TIPAIP AP 3 0mm 1 0mm x 5 0mm 2mm y 6 0mm 2mm y 2000 6 0mm 2 5mm x 4 25mm 2mm y 4 25mm 2mm y 1 This is measured using a Self Test page Note The LaserJet HP IIP IHP and the 2000have a service adjustment for the top margin leading edge of paper to first
79. emember HP TermTypes for HP systems will send an ESC E at the beginning of a print job to reset the printerto default values Robust Xon MUST be enabled on all HP LaserJet printers All HP LaserJets run with 8 data bits no parity MPE Classic amp XL Matrix os geek eas TIPCL22 TIPCL22 amp CL22 amp MPE V rev V delta 1 a B TTPCL26 4 TYPCL26 4 MPE XLv1 2 Wm 26013A TIPCL22 TIPCL22 amp TIPCL22 amp MPE V rev V delta 1 mp 2107 3 TIPCL26 4 TYPCL26 4 MPEXLv1 2 26843A TIPCL22 TIPCL22 amp TYPCL22 amp MPE VIE rev V delta 1 61 7 BI TIPCL26 4 TTPCL26 4 MPEXLVI1 2 1 Has status checking on board the Formatter PC 2 Plugsinto rear optional O slot sez 1 0 to OPTOMA on Front Panel PIN 26013 60001 3 TIPCL26is not supported on ADCC use cable 92219G or 13242N pin to pin 2 3 amp 7 Shield pin 1 connect atone end only 4 TTPCL26 is preferred as status checking is done at the beginning amp end of spoolfile TTPCL22 does this at the end of every line therefore is slower Use cable 40242X or 13242 3 pin usecable 40242P or 13242P 5 pin S LJIIP UP P are NOT supported on the HP3000 systems 6 The LJ2000 serial VO board has on board status checking P N 02684 60010 7 No longer available Data Transfer Rates SERIAL Transfer Rate Transfer rate Kbytes sec Baud Rate 8192 CENTRONICS Parallel Transfer Rate Note The maximum length of cable for Centronics parall
80. eplace this clutch this is known to be a common failure in this printer 5 22 13 2 PAPER JAM WHEN PAPER is DIRECTED TO ERROR TRAY ie during a MISPRINT 13 2 PJ s in SWITCHBACK can be intermittent Paper can be dumped into the bottom of the Duplex area 13 2 Paper Jams in SWITCH BACK can cause skewing of paper in the Deflector Roller areas Friction Drive Geoff Banks Preston 13 2 PJ s IN SW BACK Le OK in DUPLEX mode Paper skews as it enters the switch back as it reverses direction it jams in the top LH comer viewed from the side 13 2 Paper Jams intermittent two sheets of paper in Switch back a crumpled sheet exiting fuser a sheet under EP Drum lastly a sheet just leaving PDX Bob Haggett Basingstoke New Info Note Damaged female pin on J55 in fuser area Locate the 2 fixing screws which secure the fuser assembly you will see 2 molex connectors to the left of the LH screw screw viewed from the side see Fig 6C 89 p6C 79 J55 is the larger connector 3x5 Reverse SL6 Solenoid slow im operation if paper does not reverse it will drop into bottom of Duplexer 1 Replace Reverse Solenoid SL6 2 Check possiblity that PS7 sensor flag is sluggish as entry at bottom of this page 13 2 Paper Jams On inspection the Deflector Solenoid does not appear to release or engage quickly enough Rubber Sleeves on Deflector Rollers had migrated to LHS and was binding Replac
81. errors or Paper Jam reposted Difficulties obtaining LASER POWER after Laser Unit has been replaced In Duplex PAGE NUMBER ING NOT SEQUENTIAL ie page 1 on one side page 20 on the other IN Duplex PAGE NUMBER INGNOT SEQUENTIAL i e page 3 on one side page 6 on the other Factor of 3 page difference A Blank sheet is always be a be in Vert Pass after print job is completed NOERRORMESSAGE s Three Paper Jam LED s in the DUPLEXER stay on all the time atinstallation TICKING noise coming from Stacker Power Supply area Can cause Duplexjams Erratic movement of Stacker O P Tray LED G on LHS of Operators Front Panel can flicke POORFOCUS BLURRED PRINT ie character fill in on e ma b do q etc Bold fonts have blurred edges Self Test box 7 may appear light Heavy shadows around characters Printer was in CE MODE and hence did not report an Error 50 or else the CE did not see the message flash up as CE mode tried to override the error condition DO NOT LEAVE IN CE MODE 1 For Laser Power Adjustment p 6B 26 turn on DSW941 7 Ready killer BEFORE DSW941 2 Laser on to avoid Beam fail 2 Reconnect all plugs and switch on NOT in CE mode to see if there are any errors other than 51 Beam Detect Failure A scanner motor failure for instance will override the READY KILLER and prevent he laser turning on Faulty CENTRONICS INTERFACE PCA Faulty Double Feed Detect Assy either require
82. ers or adjust as procedure in new service manual page 6 139 amp 6 140 5 33 Duplex Area 2nd Pass Paper Jams Con t 13 3 to 13 1 Double Ping Observe the weight in the Duplexer are there any Paper Jams Very intermittent slight collisions that could retard to movement of the Replacing the Transmission paper This proved to be the problem in this case it Drive Assy RG1 0434 000CN slowed the paper sufficiently to make it late arriving appears to fix the problem for at Q1 LED sensor several weeks Remove Duplex assy manually operate the weight it should rise amp fall smoothly If it Shudders replace Bill Howitt Aberdeen Duplex Paper Feed Assy RG1 0441 210CN Its expensive individual linkage parts are numerous and very difficult to obtain if at all PAPER JAM in Duplex tion Solenoid Switchback was engaging but very mode only Can be slowly therefore NOT deflecting paper into the intermittent Interrogation Duplexer The RESTRICTED movement of the of the the Front Panel via was caused by Guide Plate item 7 page 8b 19 PD DU switches shows a binding on deflector shaft item 7 page 8b 22 The Duplex IP Jam top portion of this Guide Plate was binding on the LHS of Switchback The fix was to simply bend the Bob Edwards plate away from shaft PS8 Flashing then ERROR Faulty PS1 in the Duplex unit see Fig 61 7 p6I 11 13 3 DUPLEX JAM for sensor locations 5 34 2684 Print Engin
83. es Remove fuser and adjust the sensor plate so the paper flag moves into the sensor without paper in the sensor 2 Excess rubber on rollers of Delivery roller shaft see Fig 8A 27 item 30 The eccentric rollers intermittently activate the paper jam circuitry A flat file can be used to remove the excess rubber By adjusting gap between Transfer Separtion Corona and EP Drun resolves this problem This gap is too close and may differ from front to back of printer In this case the gap was too close at front of printer causing paper to slightly skew and therefore fed to fuser with this skew Fuser assy tried to straighten paper thus the crease developed down the page 5 36 2684 Print Engine Area Con t ERROR 13 1 error ping is heard but paper continues to move Leading sheet stops in delivery roller area of FDS Occurs with customer printmg of Self test There is a 2nd sheet and this stops with 50 to 75mm under EP Drum New Info ERROR 13 1 paper jam with front panel LED D on No paper was found in Vertical Pass assy Bob Haggett Basingstoke New Info 13 1 PAPER JAM s as sheet is about to enter the Fuser assy New Info Bob Hagget B stoke Nov 93 13 1 Paper Jams in DUPLEX Mode ONLY Peter Salsbury City Gate Oct 94 13 1 Paper Jams as paper leaves Fuser amp enters Switchback Geoff Pearce Leeds July 94 It was noted that PS3 fuser sensor never lit as paper passed through fuse
84. eveloper gets ridofproblem for alittlelonger Ed Rote USA In Scan Direction from LH side prints Approx 75mm then blank then prints the last 25mm Asprint changestono print the printed image does fade Seeexample opposite CHAR s BREAKING UP EVENLY ACROSS THE PAGE Eventually allthat it printedisa jumbled series of broken scan lines running edge to edge of the paper 55mm JITTER only with A3 or Ledger paper Seems to appear when Shaded areas are printed A smear appears 55mm fromthe trailing edge and is2 3mm wide Hubert Villiers Print Image MOVED DOWN page by approx 15mm This was in the direction of paper movement New Info Peter Salesbury City Gate The Character Font on Self Test look WAVEY normally they shouldbe diagonal Characters COMPRESSED amp ELONGATED morenoticable when textis printed in land scape mode in Paper Direction Chris Rivett The printer was in a very warm environment and enclosed ina smallarea withno air movement This caused toner to CLUMP on the developer Ensuring there is adequate airflow to dissapate the heat fixed this problem Adjust Foldback mirror or replace mirror mount MAAN anarapevanscnannnnen peabbtoabbonebhnco nmmn tre INV ecevcceceeceeecece Faulty ENGINE INTERFACE PCA Replace with new Feeder guide Assy RG1 1719 000CN Replace Main Motor This motor must have been running slightly fastto givethis sympton Customer hasa Pr
85. ge 6 140 in service manual to set correct tension to these rollers 3 Replace Duplex PSI sensor amp flag 4 Replace 2nd Pass Reg clutches 5 Holding Tray Roller Solenoid intermittent 6 Replace Transmission box 7 CE may have installed Waste Toner LED Visible in Duplex Q1 sensor position this may work initially but may give this error intermittently 1 Replace Transfer Separation Corona Due to the 2nd pass of the paper through the EP Drum area paper not separating from drum May occasionally PJ on 1st pass 2 Replace Pretransfer Corona 3 Replace HVT3 PT SE Power Supply Ensure to Install LED s in replacement of the incandescent lamp in Duplex Holding Tray see service note 2684DU 02 1 Ensure the correct LED is installed CE s have installed Toner Waste LED in Q1 location these NOT work The correct Duplex LED is infar red Invisible to the eye the Toner waste LED is a red visible light Ensure the Duplex LED adapter bracket is correctly is installed and is NOT loose 1 Check if Infra Red invisible light LED installed in in QI position service Note 2684DU 02 2 _Check if LED Adaptor is not loose 3 Check Separation Roller Not worn or Adjustment is required 1 Loose connection on SLI Second Pass Pick up roller Solenoid Fig 6 156 page 6 135 Worn Upper Lower Sep rollers To test insert sheet from holding tray should not be able to push paper through Sep rollers Replace roll
86. he READY state there is NO ping or 10 3 Duplex door open message PAPER JAM IN DUPLEX UNIT Paper enters the holding tray and then DUPLEX JAM occurs PAPER JAM 13 1 normally in DUPLEX mode Two pings 13 3 to 13 1 paper in Vertical pass and under the EP Drum when PJ occurs PAPER JAM IN DUPLEX UNIT Paper jams in the Duplex prior to the holdmg tray ie was not making it to the holding tray sensor Mise Problems Only verified as DUPLEX jam as opposed to a print engine jam using the DUPLEX troubleshooting procedure using switches 5 amp 6 on the PD DU PC in the PDX The LED s indicated a 2nd Pass Pick up jam pointing to area D 2nd Pass Feed Roller The fault was traced to a loose connection on SLI 2nd pass pick up roller clutch See 61 56 61 44 Faulty PD DU CONTROLLER PCA in the PDX The operation of the duplex door inter lock was verified by monitoring JC101 3 on the PD DU CONTROLLER PCA for 24v door closed and Ov door open 1 Faulty Separation Feed Roller clutch CL1 Fig 9 15 p 9 20 Confirm this by grounding J404 pin 1 on DU DRIVER PCA 2 Customer using 3 hole paper Front hole aligns with the tray paper sensor giving false paper jam See Mike Mclain s TWX on LJ2000 AND 3 amp 4 HOLE PAPER 1 Replace Transfer Separation Corona Due to the 2nd pass of the paper through the EP Drum area paper not separating from drum May occasionally PJ on 1st pass 2 Replace Pre tr
87. hen subjected to high temperatures these individual plastic particles become part of a larger plastic image on the page When the page is folded the plastic must give in some way If the print image is well set into the paper the resulting break in the plastic will NOT be very apparent However if the toner has NOT been able to penetrate the paper fibres the Crack in the plastic image will be amplified A white line will be seen through image To Minimise 1 Ensure paper meets ALL Paper Specs see guide 5002 1801 In particular pay attention to the smoothness 100 250 Sheffield and or Wax Pick gt 11 Dennison 2 A lighter Density setting will ensure less toner used thus minimising problem 3 A lighter character stroke may also help Note See HP LaserJet Reference Guide section 4 Cracking Up page 4 11 revision RCO 4 01 4 14 LJ11P LJ111P PRINT QUALITY PROBLEMS Con t THIN LINE Down page This pbm was resolved by replacing the Formatter approx 50mm from RH edge PCA At first sight this pbm does not look like a of page LFTTP Formatter fault To help you diagnose this remove Les O Reilly Dublin Feb 95 Formatter PCA completely and use Engine Test to ascertain if pbm is still apparent Even though there is no display the tramlines should print 4 15 imn ERROR 13 permanent at power on ERROR 13 Feeds paper in approx 2 5 leading edge stops level with Primary Corona
88. hooting paths fails and the no assys components have been replaced please contact RCE for further action plan cold environments are known to cause this problem on some LJIHIP s This can be caused by Non HP Cart s Refilled If non HP Cart is used try HP EP Cart to at least eliminate this posiibility If this is the cause in normal See Service Note 33471A 03 or 33481A 02 Replace scanner motor assy note it has the same P N as the old assy and or improve environment where printer is located P N RGI 1771 000CN Scanner Motor Assy 1 Error 53 Unit I Replace top memory card 2 Error 53 Unit 3 Replace bottom memory card I Error 57 Unit I Incompatible memory card top 2 Error 57 Unit 2 Incompatible memory card bot This LJIP had 512Kb of memory the customer was using WINDOWS The memory within windows NOTE In general for Error 79 this can be caused by Software Drivers Memory PCA s Font Macro Personality Cartridges Optional I O cards or Formatter PCA MOANING NOISE in the vicinity of the Paper Pick up assy we Sep Pad Sep Pad Housing a Vibration Metal Bottom Control Pad Plate Printer NOISY not Separation Pad Moan Geoff Banks Preston Not FUSING correctly and print SMEARED down LHS of page Typically a band of approx 25mm down LHS of page Print CRACKING when paper is folded White lines may be seen running through characters where p
89. horizontal dot row These can only be accessed by service personnel and should only need adjustment when the DC Controller PCA is replaced Toner Cartridge Troubleshooting Process When Troubleshooting problems such as Print Quality Paper Jams or Gear Noise complaints it is well worth considering the Toner Cartridge In particular if non HP Toner Cartridges are used these are known to give a greater frequency of problems and can easily lead to customer dissatisfaction Please note that HP does not recommend the use of non HP Toner Cartridges The reasons are cited in the HP policy statement which can be found in the HP LaserJet Reference Guide Green Book section 5 When Troubleshooting please use the flow diagram below to help decide if the Toner Cartridge is the cause of the problem This can be especially useful to Call Qualifiers Note In some circumstances customers may believe the Get brief description toner cartridges are HP Also in a very few cases there are ofproblem Deter non HP cartridge boxes designed to look like HP Toner mine if HP or non Cartridges and deceive ENSURE where possible customer HPTonerCartridges op CE use HP Toner cartridges to diagnose potentional are used toner cartridge problems Det Pw Problems that Toner Cartridges can potentionally cause are nature of problem Paper Jams Print Quality Repetitive marks across page Lines Bands down page Compression amp Elongation of characters
90. hould be resolved by now but may show up occasionally 4 20 ae restau CARRE l Classic Printers l LaserJet 2000 a IN H W 2684A P D How to use this Section The faults are sub divided into the following four categories 1 Faults with Error Numbers 2 Miscellaneous Faults i e front panel hangs pages out of sequenc etc 3 Print Quality Problems 4 Paperpath Problems i e paper jams surprise surprise this is the biggest section PLEASENOTE When looking for 13 X Paper Jams please refer to paper path section as all of these types of errors appear there JUMBOJET FAILURES REALO WITH SOLUTIONS The faults contained in this section are ALL real fault that have actually occured in the field This booklet will help prevent other CEs going through the same logical troubleshoot ing path thus saving time and increasing efficiency Note thisis NOT areplacement for the2684 TROUBLESHOOTING GUIDE Chapter 7 in the Service Manual but can be used in parallel to aid fault location Please note all pagereferences are for the NEW SER VICE MANUAL 02684 90903 LIST of SERVICE NOTES up to Jan 91 Here are the Service Notes which have been released on the Jumbo to date 2684 1 Centronics I O data loss 2 PDX Unit Improvements 3 Drum Damage Service Hints 4 Switchback Service Hints 5 Duplex Unit Improvements 6A Fuser Assembly Improvements 7 Switchback Unit Improvements
91. ibility from one printer to another There are 5 PCL levels that exist at the time of assembling this book Each higher level supercedes the previous level for instance a LJ were sent higher level PCL commands such as those used with a LJ4 these would be ingnored by the LJI See table below for PCL structure Increasing Functionality Simple print amp Space Plus a variety of forms paper sizes amp Margin control Plus proportional spacing bold italics amp merged text and graphics Plus additional point sizes amp typefaces down loadable soft fonts electronic forms amp shading Plus scalable typefaces enhanced page formatting HP GL 2 for fast vector graphics printing Phis support for 600dpi printers enhanced vector graphics improved data compression oo HP ThinkJet HP QuietJet HP2932 34 dot matrix HP 256x impact printers HP DeskJet family HP 2235A Ruggedwriter LaserJet I HP LaserJet I ID HP LaserJet IT HP LaserJet 2000 HP LaserJet I family HP DeskJet 1200C LaserJet 4 family LaserJets amp Paper Related Problems Paper related problems are probably the most common fault that HP customer engineers have to resolve Most customers never really consider how important paper is to ensure LaserJet printers perform well free of paper jams and print quality problems This section provides guide lines for the CE to follow if paper is suspected to be to be the customers problem
92. in line with the two ecentric cam rollers mounted on the VP Pick up Assy The problm can be intermittent Updated Info LJU UI UD TID No MANUAL FEED 1 Registration Solenoid sticking replace 2 Replace Paper Control PCA amp maybe DCCont Note First page may be affected only The LJI has a different paper path when compared to the LJH HP specify that line difference can vary by 2 5mm per page 1 Worn Feed Roller Assy 2 Replace Registration Assy 3 Check or Replace faulty Cassette Tray 4 Out of Spec media 1 Ensure paper amp Paper Tray are installed correctly 2 Replace worn Feed Roller Assy 3 Replace Registration Assy 4 Is the Fuser Insulator Pad Missing 1 Have you replaced the Scanner Unit previously If so check Service Note 33440A 2 2 If all else fails re shim Scanner Unit This should be factory set but in one case we found the setting incorrect L shaped bracket on LHS of the Paper Cassette Tray which is held in position by plastic peg had lost its circlip The L shaped bracket had worked lose reseated and returned circlip to resolve problem This problem can occur on LIU IM IID amp MD s 1 Changing media to a Laser Quality paper that adheres to the Paper Spec s Guide always resolves this problem 2 Replace both the Separation Pad amp I P feed Assy 3 If customer is NOT using extremely light or heavy paper 16lb or 361b remove one of 2 tension spr gs P N RAI
93. inter in this case a LJD the IP feed solenoid was heard to fire no paper movement then ERROR 51 Replacing DCPS Assy resolved problem No fault if memory deinstalled from printer CE re placed 1Mb 33443 69001 Rev B memory bd replaced Formatter PCA amp DC Power Supply To resolve this problem the Formatter and 1Mb memory PCa s were replaced as a pair 1 Replaced Cable RG1 0908 Q00CN from Laser Scanner Unit J451 to DC Controller J202 203 See Service Note 33440A 09 2 Replace Laser Scanner Unit 1 Scanner Motor cable NOT connected correctly J401 to Optics Assy Reseated this cable 2 Replace Laser Scanner cable RG1 0908 000CN 1 Replace Formatter PCA See S N 33440AB AU 09 if connected to a Vectra 2 Replace DC Controller PCA 3 Replace DCPS Assy 4 Replace Formatter amp DC Controller PCA s as a pair When some HP PostScript cartridges 33439P Q are installed in a LJUL the printer completes Self Test and then locks up im the start up page The maim motor starts but paper is never picked from the paper tray Error 55 may be displayed if the printer is powered on for more than 3 minutes This situation only occurs with LJIM s that have the newer DC Controllers P N RG1 2706 000CN The exchange PCA 33449 69004 is NOT affected by this problem The PS Cart s must be exchanged with another with a DC of 3150 and may have a blue dot on its shell See service Note 33439P 01 or 334390 01 for further detail
94. isappeared 2 Formatter Errors that do not allow printing to occur 3 Formatter memory SIMM s that pull down DC power supplies Note DC power supplies on later printers can crowbar and remain down for 10 to 15 minutes Location of Print Engine Test button LJIID LHS as viewed from the front very near rear of printer half way up LJQ ID WAHD RHS half way along in lower base pan look for plate with test print on it LITIP LJUP At rear of printer lower rear cover door look for access hole at top left LJ2000 On Operators Display Panel simply press button Please note there is also a Video Test Button on the DC Controller PCA top LHS Half Self Test Procedure In some cases it is very useful to look to see if the image appears on the EP Drum To do this simply 1 Initiate a self test 2 When the paper is approximately half past the EP Drum power the printer down 3 Remove Toner Cartridge 4 Is expected image self test image on EP Drum How can this help diagnose a problem Well it splits the print quality problem in two It tellsthe CE thatthe problemis either a Charge Corona roller Laser problemor a Transfer Corona roller problem Take the example of Blank Pages Ifthe halfseif test is implemented and the image appears on the EP Drum but not the paper this diagnoses as a transfer problem The Half Self Test can help in the following instances Blank pages Faint Print Bands down page Line
95. isplays PS BUSY Install diode in fuser assy Cheaper or replace fuser assy Expensive See service note 33471A 02B A 33439P most probably will be installed a LJIP requires the Postscript cartridge 334390 A LJIP can also use the C2089A Switchable PS Cartridge See Postscript compatibility matrix in section 1 of this book page count of the LJIIP caused by the Pacifc Page PS Cartridge This page counter does not increment using this PS cartridge It seems when the counter Teaches 2047 for some reason the PS Cart believes it has a Legal paper size installed This is why print image moves down the page CE s have in the past replaced both Formatter and DC Controller PCA s this will fix in the short term but will fail again when the page counter reaches 2047 This is NOT a HP problem the customer MUST contact Pacific Page A temporary workaround is 1 Reset page counter to zero via Service Mode remove Pacific Page PS cartridge to do this 2 Use HP PS cart 33439Q or C2089A LJHUP only This problem should be resolved by now but may show up occasionally Print off A Self test Page TOP Leading Edge to First Dot Row A4 Ltr 3mm 1mm Top Horz Border LEFT Left Edge to First Dot Row Left Vert Border 5mm 2mm 44 LEFT Left Edge to First Dot Row Left Vert Border 6mm 2mm Ltr 4 8 LJ11P LJ111P MISCELLANEOUS Con t IMAGE SKEW Max Image tolerance 1 5mm over 259mm 1
96. ith Print Test and only a small portion of Self Test See below Paper tray size microswitch problem Check operation of these switches alternatively paper size switch cables may be defective There are 3 micro switches to the left of the paper tray which sense type of paper tray A4 11x 8 5 etc installed e g of problem ELONGATION OF PRINT in the direction of paper movement 1 Replace DC PS Main Motor PCA 2 Check drive mechanism gear train amp motor 3 Replace main motor 4 Is the use of Non HP Toner Cart s causing this pbm BACKGROUND 1 Adjust Print Density dial 2 Ground Spring in centre of drum drive gear is it damaged or missing 3 Check Laser Power adjustment 4 Replace HVPS 5 Replace DC Controller PCA 6 Replace DC Power Supply Main Motor Dvr PCA Reference Service Note 2686A 7 1 Pay special attention to the quality of media used 2 Supply customer with 2686A Paper Spec s Guide 3 Replace Feed Guide Assy RG1 1039 000CN 4 Dirty Primary Corona 5 Try replacing Toner Cartridge 6 Clean interior of printer VERTICAL SMEAR problem Thin grey band in approx middle of paper Band in the direction of paper movement This band is Approx 6 to 12mm wide This problem is also known as VERTICAL FOGGED STRIPES 1 Replace Scanner unit 2 Replace DC Controller PCA 2 11 2686A D PRINT QUALITY PROBLEMS
97. ity seemed to inprove towards being acceptable The use of Non HP EP Toner Cart s were the cause of this pbm use HP EP Cart s if more reliable results are required Trade billing customer should be considered 3 23 R PATH PROBLEMS Replace pick up assy complete including clutch ERROR 13 after approx 20 30 pages paper jamming underneath pick up rollers When this fault occurs several lines are partly overprinted ERROR 13 Intermittent Printer had been worked on previously CE had routed fibre optic cable wrong way thus allowing it to restrict movement of paper out sensor bail Take care to Route Fibre Optics cable correctly Intermittent ERROR 13 can can be associated with Error 50 Replace RG1 0907 000CN Fusing Assy cable this is known to be intermittent ERROR 13 amp 51 LJID Very Intermittent motor does not and does not feed paper Error 13 appear first and then 51 Faulty Lid switches on DCPS Supply assy replace this module Teeth were missing off one of the Upper Feed Drive Assy gears P N RG1 0934 000CN See page 8 34 In LJDVOD Service Manual ERROR 13 Intermittently and Main Motor seems to Pulse as paper moves through the printer LJHD S Starway Bill cay an 94 ERROR 13 ON POWER UP New Info Kim Bateman Basingstoke Upper Cooling fan was found to be pulling down 24v Replace Upper Cooling Fan
98. laser bond paper to test 2 Paper Jams Smears caused by broken or missing separation belt or incorrectly instailed 3 Paper Jams caused by EP Toner Cartridge shutter not opening The plastic strut in the base RHS base RHS which opens this shutter was broken 4 Paper Jam caused by Paper Cassette clutch collet item 4 F ig 8 17 loose This also applies to 2686D s 5 Paper jams at rear access door due to a restriction in the guide from the rear access up to the registration assy Use slightly stiff card stock and push up from the rear access door area into this guide to clear obstruction 6 Paper Jam at Registration area Registration solenoid binding or shutter not moving correctly Replaced registration assy 7 Paper Jam at Registration Assy due to cover hinges incorrectly set causing a lack of friction between the registration rollers 8 Paper Jam at Fuser Assy caused by fuser exit sensor See page 8 49 in Service Manual item 9 Registration Shutter assy On this assy there is a rubber grommet which when the printer is unused for a period of time sticks This causes the Registration assy not to operate correctly thus Paper Jam Remove this grommet as a temporary measure replace registration assy at a later time if not immediately available Springs on Registration Shutter assy not positioned correctly fooling the LJ into believing paper has stuck in this assy i e sensor activated at all times Reposition the
99. ld activate and go off immediately reversing paper is driven when it sensed the ho paper condition The short in down onto the floor of the this case was in the cable traversing the FDS not Duplex unit numbered in the manual but between items 25 amp 26 in Fig 8B 06 p n RF1 1146 000CN 13 2 PAPER JAMS in The fix was due to a disintergrating washer refer to Switchback Positive Drive page 8b 22 item 67 Roller Shaft Roller it can be Seemingly insufficient friction seen it consists of 2 rubber washers amp 4 carbon as it passes through 3 driven keyed washers and 1 free rmning gear a compres Rollers sion rollers spring amp a retaining collar This assy acts Tim Webster Cen Lon as a clutch This disintergrating washer causes this clutch to slip thus 13 2 paper jams Replace rubber washers see below NOTE the diagram below does not appear in Service Manual FA1 1837 Lower Roller RAI 7046 Compression Spring RS1 2069 Front Supporting Plate RF1 2268 1 Washer RA1 7044 2 Washer RA1 1575 3 Rubber Washer RS1 6021 Note See Page 5 38 for detailed differences between Friction and Positive drive Switchbacks 5 24 2684 FDS Switchback Area Con t ERROR 13 1 paper intermit tently will not enter switch back from Fuser It is observ ed that when this condition exists none of the rollers in the switchback move Dave Malone Manchester 13 2 then 13 1 Paper Jam double ping in switchb
100. ld up of dust etc on the fuser separation pawls page 8 58 item 34 This problem is accentuated by the use of non sup ported media i e paper with a high cotton content or with tale clay content See 2686 Paper Spec Guides The use teflon coated damage resistant fuser rollers have been found to be more reliable Use High Quality Laser media as per paper spec s Reference Service Note 2686AB AU 2 Acceptable Skew is 1 58mm over 260mm feed from Cassette tray I Replace Registration assy check that white nylon rollers turn freely 2 Is media within spec s for this printer 3 Replace Paper cassette tray 4 Laser scanner Unit misaligned See Service Note 2686AB AU 2 I Clean interior of printer 2 Dirty Fuser Cleaning Pad 3 Replace Fusing assy Check the EP Cartridges are HP and are not refilled EP Cartridges BEWARE although the cartridges may be in a HP or look alike boxes it still could be of the refilled variety 2 13 ERROR 13 s Paper Jams Summary FIRST PRINTED PAGE JAM s but operates OK thereon afterwards until the printer has been turned off or unused for some time ERROR 13 FALSE PAPER JAMS no paper fed at all ERROR 13 FALSE PAPER JAMS i e paper feeds thru OK but with no printing then a false paper jam occurs ERROR 13 On power up before power up initialisation has completed main motor energises ERROR 13 occurs 1 Using UNSUPPORTED PAPER 79 grms max use high quality
101. low guides to move then replace this screw The disadvantage of this is the the printed image would have to be offset to compensate 3 27 ERROR 55 Only when Post When some HP PostScript cartridges 33439P Q are Script Cart s 33439P Q are installed in a LJUL the printer completes Self amp Test and installed LJ only then locks up in the start up page The main motor starts but paper is never picked from the paper tray Error 55 may be displayed if the printer is powered on for more than 3 minutes This situation only occurs with LJM s that have the newer DC Controllers P N RG1 2706 000CN The exchange PCA 33449 69004 is NOT affected by this problem The PS Cart s must be exchanged with another with a DC of 3150 and may a blue dot on its shell See service Note 33439P 01 or 334390 01 for further detail No MANUAL FEED Replace Paper Control PCA ERROR 13 when using As this paper is a non standard size for the paper FOOLSCAP media trays it can only be realistically fed via manual I P Leaves approx 1 inch of paper Ensure the escape sequence to select Legal Size in the fuser unit paper is implemented __LJUD LIIMID POWERED ENVELO On Power Up normal 05 then Replace Paper Control PCA PAPER JAM ERROR 13 when Envelope Feeder is Connected The combination of envelopes and paper used in the Upper Tray caused this problem Selection of After long periods of alternate printi
102. low this paper path diagram are the internal paper path sensors associated with the LED on the Operators Front Panel o Paper Jam o p eww EE Indicator LED Duplex Unit LED E LED S D 7 amp 7 LED A gt Stacker PS4 Main Tray Print Delivery Sensor 13 2 O P Jam PS5 Sub Tray Print Delivery Sensor PS6 Switchback Feeder Paper Sensor 1 PS7 Switchback Feeder Paper Sensor 2 LED B gt Print Engine PS3 Fuser Delivery Sensor 13 1 Paper Jam LED C gt Print Engine PS1 Separation Sensor 13 1 Paper Jam LED D gt Print Engine PS4 Paper Inlet Sensor PDX or Dup 13 1 Paper Jam LED E gt Duplex PS3 Second Pass Pick up Sensor 13 3 Dupiex Jam LED F gt Duplex Q1 Holding Tray Sensor 13 4 Clear Duplex Unit LED G gt Stacker PS8 Duplex Unit Input Sensor Duplex PS1 Holding Tray Delivery Sensor 13 3 Duplex Jam 5 38 PDX Duplex Unit Troubleshooting Hints If a Duplex Jam 13 3 occurs the following procedure will help isolate that fault much easier than previous methods ENSURE the printer in NOT in CE MODE as this may hide the cause of the problem Also listen for Double Ping 13 3 to 13 1 by finish ing at 13 1 this could misled CE into believing a Print Engine Jam had occured Use the following method to determine if a paper jam has occured in the duplex unit and if so which part of the duplex did the jam occur Setting switches 5 amp 6 SW1 on the PD
103. ng from Envelope Tray Upper Tray then Lower improved quality envelopes and paper reduced Tray DARK Background problem dramatically SMUDGES appears in the Upper middle part of page Note By leaving the faulty EP Cart s in box or dark Replacing with NEW EP cupboard they will recover and will be usable Cartridge appears to fix problem again for a short period of time and then retums 3 28 CASES chong Cui Classic Printers LaserJetIIP LaserJ etIIIP 33471 33481 Booklet Organisation Please Read This chapter has been divided mto 5 sections some parts may appear twice in these sections this is to enable easier location The sections are as follows 1 Faults with Error Numbers Error 13 s Paper jams in the Paper Path Section 2 Miscellaneous Problems 3 Print Quality Problems 4 Paper Path Problems All Error 13 s Paper Jams in this section 5 PostScript Problems Service Notes up to Oct 93 33471A 01B 33471A 02B 33471A 03 33471A 04 C2007A 01 C2007A 02 33481A 01A 33481 A 02 33481A 03 33481A 04 Triac in Power Supply Assy 115v Only Static Induced Error 41 3 Diode Upgrade Kit IC301 on Scanner Motor Assy may overheat and cause ERROR 52 LJIP P INP Printer New Fusing Assy Component Incompatibility LJHP Plus Update for LIMP amp LJIP Service Personnel LJIP
104. nger to appear No remedial actions is required to correct this problem LJ HID ERROR 41 Intermittent LJID I See Service Note 33440A 09 concerning Enror s 41 50 51 amp 52 Replace Laser Scanner cable RGI 0908 000CN 2 Check grounding bushing on LHS of Reg assy Especially when replacing Reg Assy ensure this brass bushing is orientated correctly This Cont 3 8 LJIVHVIIDAID FAULTS WITH ERROR NUMBERS Con t ERROR 41 very Intermit tent OK on long continuous print runs fails on 1 or 2 page prints short print files K Batchelor Hatfield Very Intermittent ERROR 41 Replaced all normal parts CE noted that an Error 12 occurred first then Error 41 THIN LINES across page intermittently can be associated with intermittent Error 41 51 amp 52 s ERROR 50 LJ Intermittent ERROR 50 can be associated with paper jams ERROR 51 LJ2 3 2D 3D When printing the FIRST PAGE was BLANK and then ERROR 51 occurred brass part helps eliminate static 3 Replace DC Controller PCA The printer only failed intermittently lst thing in morning on power on 4 Replace Optics Assy Could hear Scanner Motor audibly noisy replaced Scanner Motor also in this case the DC Controller PCA was replaced as well Replace DC Power Suppy Replace RG1 0908 000CN Laser Scanner cable 1 Replace cable J206 DC Cont to J331 on Fuser Exit PCA P N RG1 0907 000CN See Service No
105. nlet to the Print Engine Jam a Jam feeding paper from __Daplex unit PDX mnit 0 LED OFF 1 LED ON o clear Error Code display clear paper from the printer and open then close the front covers his will reset the display D R U ee escccccscccccce Mecesccsccccce e oeeo oio w c be eececccceseDececs Ld e Holding Tray 2nd Pass Rollers FIG2 Duplex Paper Path The only limitation is the configuration of the printer s PD DU Controller PROM and CPU PCA The printer must have at a minimum PD DU Controller RGI1 0532 020CN or gt e g O70CN or 080CN PROM REV 6 or gt e g REV 7 CPU PCA RG1 0403 020CN or gt e g 040CN or 070CN Note Since introduction of Rev 07 in just a few printers a problem has been noted as per page 7 29 Entry Paper Jam in Duplex and or in Fuser Area In these cases use Rev 8 5 41 2684 SCOPE ELIMINATION Jim LaMontagne NPR Submitted by John Yelmgren Midwest Region The foldback mirror adjustment procedure currently requires a scope This can be eliminated by usmg a 34301A RF Probe and a voltmeter This new procedure is identical except that the RF Probe and voltmeter are used to find the maximum laser beam level instead of a scope The difference in the procedure is as follows a Attach the RF Probe to the D C voltmeter input The meter that should be used is of the HP E237xA series The meter should be set for measuring DC volts and auto r
106. ntermittent problem Replacing DCPS assy resolved this problem Replace DC Power Supply Ail normal parts were replaced for this fault but prob lem still preveiled A Mains Monitor was installed and highlighted 900v peaks between neutral amp earth 1 Replace Operator s Front Panel PCA 2 Replace Formatter PCA See Service Note 33440A 1 Use HP 24542D Centronics cable Replace AC Power Module Replace UF PCA See Service Note 33440AU 02 A vibration proof pad at LH end of Fusing Assy becomes completely dry of lubricant thus making this noise Lubricate with CK 0544 000CN This will apply to ALL L s using this print engine The Upper Cooling fan brass bushing lubrication is drying up Sometimes this fan may seize See Service Note 33440A 11 with fan assy RH7 1047 000CN simply replace the bushing and the bushing holder ONLY Please note the LJTI TID use RH7 1074 000CN fans These models CANNOT use these replacement parts 3 13 LJIVIN IIDAIID MISCELLANEOUS Cont NOISY when Main Motor tums on LJIH HID Andy Suett New Info NOISY when Main Motor tums on LIVMIVIDAHD Hans Hjertquist Boise New Info Grinding NOISES LIII A Cowie Leeds Sept 94 EXCESS TONER depositing inside printer Print CRACKING when paper is folded White lines may be seen running through characters where page is folded LJ after Paper Source Error such as PC LOAD LETTER other users on
107. onnection from a Multiplexor on a 9000 host with RJ45 type connection to the serial input of the LaserJet should be wired pin to pin as follows Host R345 RD TD Printer Host Printer gt gt gt gt gt gt gt gt gt 25 pin RJ45 gt gt gt gt gt gt gt gt gt 9 pin I 2 RD l 2 3 3 TD 3 3 CTS 4 CTS 4 RTS 5 RTS 5 Grd 6 Grd 6 Configuring HP LaserJets on HP3000 When configuring the Laserjets on the 3000 use TermType 22 PCL22 or TermType 26 PCL26 The 2686 2684 and 33440 have Status feedback functionality and can be configured directly The LaserJets manufactured after these products require an Optional I O board to be installed More detail for specific Laserjets is listed below LaserJet I ID 2686A D This can be connected directly to the HP3000 as the serial I O has status feedback Configuration is acheived via a bank of switches which are accessed by removing the rear panel 4 screws Switch setting are OFF Serial X Baud rate selection X Baud rate selection X Baud rate selection ON LJI only enables ROBUST Xon 2400 OFF ON DTR polarity set Hi 4800 ON 9600 ON 19200 ON Note The standard 26864 First model produced has only a serial I O The 2686A and the 2686D was manufactured with both Serial and Parallel I Os Note See Cabling at the end of this 3000 configuration s ction LaserJet II 33440 This printer also has status feedback built into the the I O and can be directly connected to the H
108. ont which fixes the mounting plate and provides the path to ground the screw is the one holding in plastic item 11 Fig 8A 02 p 8A 8 If the black pages disap pear then remove potential sensor plate assy and check for shorting burrs fluff etc 2 DS106 on HVT1 HVPS dim or not lit also LED1 amp LED2 on Potentional Control PCA not lit This was caused by DCLPS2 Power Supply no 5v to Potentional Control PCA Resolved by replacing Potentional Sensing Assy Varistor on PRIMARY CORONA SCREEN was not grounded Pull Primary Corona No 1 out about 3 inches 7cm and note the metal pins either side of the handle Theright hand pin should engage ametal ground tab asthe Coronais plugged in In this case the metal tab had been bent and was not contacting the RH pin the fix was simply to bend the tab straight Replace Developer Assy Pins bent on J109 connector of the DC Controller PCA IBM PC had an old version of the PRINTER Driver Foreign body had stuck onto DEVELOPER ROLLER Drum damaged i e arcing Ensure all coronas HV and dev bias supplies are operating correctly and the EP area is free from excesstoner beforereplacing the drum NEVER run the printer with the developer empty Seeservicenote on DRUM DAMAGE SERVICE HINTS 2684 3 2684 PRINT QUALITY PROBLEMS Con t Recurring SMUDGE or mark every 10cm This pattem could be seen in developer brush Cleaning Developer would getrid of itfor awhile Replacmg d
109. opies of the same printed pages appears in the O P tray ONLY with A3 paper On Power on goes to Ready asnormal then jumps to 05 Self Test Print CRACKING when paper is folded White lines maybe seen running through characters where page is folded Self Test will NOT run from Lower Paper Tray LEADING EDGE of Paper has toner SMUDGE mostly on the rear side ofpage Also image is SKEWED New Info Ian Martin B ham Jun 94 Customer REFEEDING paper not two sided printing Two sheets of A3 paper feeding simultaneously from Duplex holding tray Adjust or replace Separation rollers CE noted 5v on Formatter Power Supply measured 4 7v readjusted to Sv fixed problem Toner comprises ofpigmented plastic material and iron oxide When subjected to high temperatures these individual plastic particles become part ofa larger plastic image on the page When the page is folded the plastic must give in some way Ifthe print image is well set into the paper the resulting break in the plastic will NOT be very apparent However ifthe tonerhas NOT been ableto penetrate the paper fibres the Crack in the plastic image will be amplified A white line will be seen through image ToMinmise J Ensure paper meets ALL Paper Specs see guide 5002 1801 In particular pay attention to the smoothness 100 250 Sheffield and or Wax Pick gt 11 Dennison 2 A lighter Density setting will ensure less toner thus minimising
110. oportional Plug in font similar to perhaps a 92286F font The printer always grabs the plug in font rather than the normal internal font It was noticed also that in the small squares on the S elf Test has narrow darker bands appox 4 5mm apart These bands were from front to back of printer Removable ofthe EP Drum showed these lines which could not be removed by cleaning Replacing EP Drum resolved problem Initially this problem looks like Print Eng Chain or Main Motor so BEWARE 5 17 2684 PRINT QUALITY PROBLEMS Con t LEADING EDGE of Paper has toner SMUDGE mostly on the rear side of page Also image is SKEWED New Info fan Martin B ham Jun 94 Ifthe leading edge was observed closely fromthe rear of printer towards the front the paper had picked up toner This toner smudge appeared mainly on the rear side of page and gradually get worse towards the rear of the printer Also the imageis Skewed compared to the leading edge of the paper This problem was resolved by adjusting BLOCKS on item 66 page 8a 14 Fig 8a 4 In this case the rear block was ajusted to resolve both the Toner Smudge and Skew problems BOLD line across middle of page New Info Dave Duerden Man May 94 Thisproblem occured from both paper cassttes The Print Engine Registration assy was replaced to resolve this problem OFFSET IMAGE appearson page after long printruns
111. ortrait amp the 2nd page in Landscape Duplex Mode LJIID Does not Feed from Lower Tray amp does not FUSE correctly LJITD THTD Not FUSING Correctly after replacing the DC Controller PCA LITT THD Printed image on front side of page is always longer than the rear side in Duplex LJIID LJIID Paper BUCKLES as it comes up from the Duplexer Also the prin image SLIPS DOWN page by 25mm to 30mm New Info Steve Marshall Washington LJIIID Paper DOG EAR s using A5 size paper fed from manual tray M Brabyn LJ3 Jan 95 This is not Supported and cannot be done Replacing the DC Controller resolved the feed problem Note The problem with not fusing was due to the fuser switch on DC Controller NOT installed correctly after the PCA replacement Fuser switch SW205 has been removed from LJHI amp LJO printer to reduce costs When replacing DC Controller note the presence or absence of this SW205 activating lever If absence cut trace on new DC Controller PCA between SW205 pin 1 amp R889 See Service Notes 33449A 04 or 33459A 02 The Duplex page is printed first with LJI MD s therefore side 2 passes through fuser first The paper shrinks then side 1 is printed next This side goes through the fuser again In Total side 2 gets shrunk 2 times This is why the front side is longer than the rear side The active signal to SL2 was LOW at all times There fore this feed mechanisum was O
112. r area LED B Fuser PS3 flag found to be misaligned by correct ing this resolved customers problem Take care when troubleshooting this problem as one can be easily misled The problem seems to be non movement of the FDS Delivery rollers Believe what you see and hear in this case a 13 1 PJ occured well before paper reached Delivery rollers Fault traced to the clearance hole for PS4 flag which was found to be blocked by Mylar This Mylar is part of a section of 3 fingers above the Vertical Pass path One of these fingers somehow become bent and was causing PS4 to be permanently operated This most likely was caused by customer pulling a sheet of paper back down after a paper jam Please note this was very difficult to observe Toner had built up on a black plastic guide plate on fuser assy page 8a 69 item 29 and was causing these paper jams Simply cleaning chipping away this toner resolved this problem Problem very intermittent occurs every 15 250 pages Paper under EP Drum amp half way out of fuser into switchback The resolution was to replace the HVT3 Separation Transfer HVPS its a good idea to check the quality of paper being used The Switchback was Disabled vis Stacker Control PCA DIP switches No Paper Jams occured directly up to Stacker Replacing Stacker Power Supply assy resolved this pbm 5 37 Paper Path LED Identification The paper path display below appears on the Operators Front Panel Listed be
113. r tray No EP Cart installed Beam Detect ignored Paper Jams are ignored All in all a very good diagnostic Tool LJIID LJIID Part Number 33447 67906 This tool does all the above functions but additionally provides visual indication the following solenoids enabled and Photo Sensors operating SL301 Upper Paper Feed Clutch PS2 Lower Motor Clock SLI Lower Paper Feed Clutch PS4 Switchback Paper sensor Paper Jam SL302 Registration Clutch PS5 Vert Reg Assy Home Position SL7 Switchback Deflector PS301 Upper Tray Paper Out SL5 Switchback Drive Control PS302 Upper Tray manual Feed SL6 Switchback Directional PSI Lower Tray Paper Out SL3 Vert Reg Guide Roller PS6 Lower Tray Manual Feed SL2 Duplex Drive Roller PS3 Dup Roller Sensor Jam Detection SL4 Vert Reg Guide Assy PS331 Exit Sensor Jam Detection LJILVI0N DC Power Supply Error 12 Troubleshooting With Error 12 No Display Dead amp Power Supply problems on the LJE LI LIDD amp LIMID printers use the flow diagram below to help isolate the problem Do NOT jump to cause use a logical troubleshooting for the more difficult types of this problem Error 12 means the Top Lid is open or the 24v is missing Use this process to ascertain why the 24v is not present Error 12 or no Display Measure DC Voltages Any Missing YES Disconnect VE PCA Display will be lost Do Missing A ees reappear N
114. raham Jones B ham Oct 94 Faulty POTENTIAL CONTROL PCA The ES LOOP wasrunning out ofcontrol causing the Primary Corona currentto increase untilit beganto arc TIP Set SW1 on the mode select switches P 6C 33 to OFF right This sets the Primary Corona control to NON AUTOMATIC mode which keeps the current fixed at the initial Vdark target value 1 Worn dirty cleaner blade reverse edge or replace 2 Replace Cleaner Station Assy Faulty SCANNER MOTOR assembly Direction Faulty DCPS1 in the print engine This symptom occurs when the 24v fails and hence sensors counters etc willbecomeinoperative and give false readings Check the 24v coming into the DC CTLR PCA at J101 pin 2 this comes direct from the power supply and if low then DCPS1 should be replaced Remember PS4 LED corresponds to the sensor above the PDX and behind lower cassette holder Replacing the PD DU PCA resolved this pbm The trickhere wasto disconnect the PDX amp Duplexunits from the print engine Now try again willit pick paper from paper cassette trays 2684 MISCELLANEOUS Problems Con t At power displays 05 as norma does not Display WARMING UP but jumpsto 00 READY After completing warmup with incorrect display prmter works fine Ifdoors are opened except front doors there is NO door OPEN message Also if PJ occurs no PJ messageis displayed though orange PJ light illuminates AlsoifMISPRINT occursno 25 x me
115. rator bring up HP Untility JetAdmin Go into configuration menu Bring up screen which shows all JetDirect cards connected on the network Note IfHardware address does appear get Network administrator to configure on to network using JetAdmin If not 1 Try LaserJet on another part ofnetwork 2 Check network cabling 3 Lastly replace JetDirect board SI I HEWLETT PACKARD NETWORK NOVELL EVHERMET 882 3 PRINTER FIRE REVISION moot ADDRESS 080009 FIRME TYPES 3 0 CARD WOT READY LAN CLAROR ERTERKAL Li WETWORK STATISTICS PACKELS RECE SYED GAD PACKETS ACO FRAMING ERRORS RCW PACKETS IRANERIT HED UNSEMDASLE PACKETS WALT COLLIE S30N5 AMT LATE COLLISIONS RETRAMSNISSI0NS WOVELL ETHERIET 202 3 REVISION FIRRAAE U 00 04 DIRECCION WOOO 08000P102700F MN DE RED BESCOMOCIOD TEPO DE IRAMA WOMBRE OE NWO Jou W000 SERVIDOR DE COLA HORORE SERVIDOR OF FICHEROS QUICEER VER TARJETA 0 3 NO PREPARADA o3 ERROR LAN YEST OUCLE EXTERN ESTADISTICAS DE RED PAQUETES RECIBIOOS PAQUETES EAR RECIB ERAS CE TRAWA ACSO PAQUETES TRASSHIY PARTS WO EUVIABLES COLISIOMES EN NIT COLISNES TARO OIT RETRANSMISIE ocooaoooboo INTERFACE NOVELL ETKERNET 602 3 REVISIONE FIRMARE 00 0 INDIRIZZO WODO 000009710250F NO OI RETE scowosciuid PROTOCOLLO WOME DEL WODO Jon NODO SEAVER DS CODE OF STAMPA WOME DEL FILE SERVER QUICKIERVER SCHEDA OF 1 0 WON PRONT
116. re asitisa bootable disk Itchecks communications between PCand the LaserJet or L2000 1 Itchecks the functionality of the LaserJet i e Duplex I P source selection etc It quickly helps CE determine if fault reported isa LaserJetproblem Itreduces Over Delivery of HP supportservices Itwillhelp to reduce the NFT rate of Formatter PCA s JetTest willnotrunifdisk is NOT Write Protected Virus protection Has CRC checking when disk is booting Virusprotection It is very easy to use Note 1 Jt is very important to ensure a high quality I F cable are used and they are correctly wired Use HP cable if possible What are the Standard Tests RippleTest Portrait amp Landscape GraphicsTest Downloadsa Soft Font Duplex Testing I P Bin Source Selection PCL PostScript Switching PostScript Graphics test Serial Parallel protocols use high quality HP I F cables if possible Please note future versions of JetTest will contain many more tests but the above will always be the core standard tests Which Printers can this Version of JetTest to run on LJI ID Note only ripple test has be tested LI ID W MD LJIP IIP LJ4 LYTISi 4Si LI4L 1J2000 How to RUN JetTest 1 Install the Bootable disk in A Drive of PCA 2 Power off the PC then on again or CTrl Shift amp DEL Keys together 3 Takeapprox 1 minuteto BOOT up 4 The JETTEST screen will appear then simply follow to menu driven sc
117. reens and choose test you wish to run number of copies etc Note The mouse wili only work ifthe PC has serial mouse ifnot use TAB and or arrow keys How to Obtain a Copy of JetTest JetTest was produced by Steve Oakes UK Manchester and Bob Edwards UKRC and has been widely distributed throughout the UK and also to many countries worldwide Ifyou need a copy please send a 3 1 2 inch HD floppy disk to Bob Edwards in the UK Birmingham office ext 59369 with return address and I will be glad to send you a copy What of the Future of JetTest At this time March 95 we are in the process of updating JetTest to include new LaserJet products We also intend to revamp JetTestto allowit to be easily updated and to inchidea wider choice of tests This will probably be available by the Autunm Fall of this year We will of course update the field of progress in this area 1 20 NE pl a EE Aer E iin Cae Classic Printers i LaserJetI LaserJetID 2686A 2686D Booklet Organisation Please Read This 2686A D section has been divided into 4 parts which are as follows 1 Faults with Error Numbers 2 Miscellaneous Problems 3 Print Quality Problems 4 Paper Path Problems Service Notes up to Sept 86 2686A 1 Print Skew 2686A 2 Replacement of Lasers DC Controller Compatibility 2686A 3 Difficulty Clearing Error 50 2686A 4 Service Manual changes since publication
118. res the Crack in the plastic image will be amplified A white line will be seen through image To Minimise 1 Ensure paper meets ALL Paper Specs see guide 5002 1801 In particular pay attention to the smoothness 100 250 Sheffield and or Wax Pick 11 Dennison 2 A lighter Density setting will ensure less toner used thus minimising problem 3 A lighter character stroke may also help Note See HP LaserJet Reference Guide section 4 Cracking Up page 4 11 zevision RCO 4 01 4 7 LJ11P L J111P MISCELLANEOUS Con t PS BUSY when using HP Postscript Cartridge HP 33439P A continuous PS BUSY condition can occur if AUTO CONTINUE is ON and the document is longer than 1 to 2 pages If the page is printed it may result m missing lines shifted text malformed letters Faulty page will be ejected and Error will be displayed 33481A LJDUP with Postscript installed recognises printer as a LJIP 512Kb Updated DOWN page by Approx 3 inches This problem can occur when Pacific Page Postscript plug in cartridges are used with this printer Printer OK in PCL mode New Info REGISTRATION CHECK See Page section 4 in Service Manual for Registration Adj Oct 94 LJIP IMAGE MOVES The problem has been identified down to the NVRAM eke This a similar problem to the Intermittent Error 41 caused by static discharge from fuser assy PS can not report Error 41 instead it d
119. rive gear does not The softer plastic of the drum drive gear gives even though it is keyed Repace drum drive gear P N RG1 1777 000CN 1 Is paper loaded correctly 2 Media out of spec refer to 5002 1801 Paper Spec s Guide 3 Worn LC or MP Pick up roller 4 Replace Separation Pad 5 Replace YP Roller 1 Check MP or LC Paper Trays are not overloaded 2 Paper Guides on MP Tray or Envelope Tray adjusted too tight 3 Media out of spec refer to 5002 1801 Paper Spec s Guide 4 If Ist dot row is NOT 3mm 1mm from leading edge of page then adjust VR201 Reg pot on DC Controller PCA 5 Check for worn or damaged Drive Gears 6 Replace YP Paper Sensor PS1 NOTE For Registration Check see Miscellaneous section or Service Manual section 4 4 12 LJ11P LJ111P PRINT QUALITY PROBLEMS Con t WRINKLED PAPER and or PRINT SMUDGED on lower part of printed page NOT FUSING correctly and PRINT SMEARED down RHS of page Typically a band of approx 25mm dowa RHS of page Character VOIDS Poor FUSING Oct 94 See Character Void statement in HP LaserJet Reference Guide Green Book for more detail 33471A Paper CREASING may occur on LJIP as well MISSING PRINT Approx 13 14mm of print was missing off the trailing edge of the page when veiwed in portrait mode Steve Obia Billericay New Info IMP LJIP IMAGE MOVES DOWN page by Approx 3 inches This problem can o
120. s Instead they friction driven from a directly driven roller 3 You will note here that ALL rollers are driven and none rely on friction at all view end of switchback rollers from front of printer with switchback covers off 4 As viewed from Front of Printer 4 As viewed from Front of Printer Tension Spring 227 Gear y RSI 2222 Feed Roller Ten Spring RS1 0163 RFI 0329 RS1 2213 i Front Arm Feed Roller RAI 7043 0329 TERY Front Support eflector Arm z Ten Spring es Plate RF1 2286 FS1 2370 _ Deflector Shaft D tor Sh Bushing Roller RF1 0328 Roier ie FS1 0056 Lower Roller Shaft RAI 1375 22T Gears Lower Roller FSI 0542 Shaft RAI 7046 Note The Deflector Shaft is easily identifiable by means of the 9 white Triangular Deflectors on its shaft see Fig 8b 10 in Service Manual Paper from the fuser first enters this area in the Switchback Main Parts Differences Feed Roller RF1 0329 040CN Feed Roller RF1 0329 040CN Deflector Roller RF1 0328 040CN Deflector Roller RF1 2288 000CN Lower Roller RAJ1 1375 000CN Lower Roller RA1 7046 000CN Tension Spring FS1 2370 000CN Black Compress Spring RS1 2069 000CN 1 Tension Spring RS1 2213 000CN Long Fibre Washer RA1 7044 000CN 1 Deflector Arm RAJI 1383 000CN Fibre Washer RA1 1575 000CN 1 Rubber Washer RS1 6021 000CN 1 Note 1 These items will be found on the end of the Lower Roller see page 7 20 in this book for detail See Ser
121. s adjustment or replacement This fault is caused by the DFD assy allowing 2 sheets of paper through EP Area ist Pass simultaneously This ends up in the Duplex Holding tray undetected thus giving this ppm Front sheet when compared to rear of same sheet will have a factor of 3 page numbers difference Dip switches on PD DU Controller PCA had been leftin factory position SW 1 amp 2 on page 6H 13 were ON instead of OF F Replace Stacker Power Supply Faulty Laser Assembly assume HV and Laser adjustments have been carried out Replace laser unit as per Service Note 2684 9 2684 MISCELLANEOUS Con t Intermittent DARK 2 inch Wide BAND OF Toner in Laser Scan direction Occurs every 20 50 pages edges of band are blurry and extends across the entire length of drum STREAKY BACKGROUND Faint lines across page approx 1 2mm apart These lines appear in scan direction but are not straight lines They are slighty uneven and looks very much like background HORIZONTAL Displacement LH PARTS OF ALL CHAR ACTERS LANDSCAPE MODE Charsare clearly formed i e NOT fuzzy but have distinctive LH tails in this case a row at the top and bottom and one inin the middle See Example opposite JAM INDICATOR AND PS4 LED on accompanied by either 13 1 PRINT JAM SIMP 13 3 DUPLEX JAM DUP 56 MAIN COUNTER MALFUNCTION Will not pick up from Paper Trays or PDX also Intermit ERROR 57 Duplex Counter G
122. s down page Bands across page Note timing of the power down is crucial to see image on drum Parts of image missing VO Cable Information PC Serial Cable Product Information 92284A C2912B 24542D 17255D 92219J 24542G 922158 92215N Note Parallel 25 pin M 36 pin M 7f 2 13m for most IBM amp Compatible PCs 1 Parallel 25 pin M 36 pin M 9 9ft 3 0m for most IBM amp Compatible PCs 1 Parallel 25 pin M 36 pin M 6 6ft 2 0m for most IBM amp Compatible PCs 1 Serial 25 pin F 25 pin M 3 9ft 1 2m 1 Serial 9 pin F 25 pin M 16 7f 5 0m 1 Serial 9 pin F 25 pin M 9 9f 3 0m for most IBM amp Compatible PCs 1 Serial DINS 6 6f 2 0m for Apple Mac 2 Phone NET or LocalTalk Mac network kit 2 1 Suitable for LIM OD M HID TP DP Pe 2 Suitable for LIUD M MD IP 0 WP Generally all cables connected to PCs pins are crossed i e pin 2 to pin 3 pin 3 to pin2 Serial Cables connected to PCs or 3000 9000 Hosts In general all serial cables connected toHP3000 systems have pin to pins connection i e pin2 to pin2 and pin3 to pin3 ADCC 25pin 25pin For 25pin connectors Male to Male cable is required to with 2 3 amp 7 wired pin to pin and shielded earth to pin 1 connect only one end Some ready made cables are available and they are 92219G or 13242N ATP 3pin 25pin Use cables 40242X or 13242X ATP Spin 25pin Use cables 40242P or 13242P 9000 MUX RJ45 Cables For c
123. se springs into its correct location or replace registration assy Ref page 8 37 item 4 25 the allen screw may come loose or it may slip on its shaft This results in the D cassette pick roller incorrectly positioned 1 Flat edge of D roller should face paper tray or 2 Too much paper in paper tray may cause the same problem Registration Sensor arm binding A misalignment of the Registration Shutter Spring page 8 49 item 15 Realign to correct problem 2 15 2686A 2686D PAPER PATH PROBLEMS Con t PAPER JAMMING at rear From rear of 2686A pull back Lower Cassette guide of printer in area between page 8 37 item 7 push some fairly rigid paper rear access door and Reg Assy up towards registration area to clear any blockage Alternatively the guide plates in this area are too close and will have to be stripped down to correct this problem ERROR 13 1st page leaves Replace Exit fuser Sensor 1 protruding from fuser assy ERROR 13 Occurs when Replace EP Cartridge either shutter not opening or it leading edge of paper is about is restricting paper movement to enter separation belt roller ERROR 13 Occurs after Replace back door springs RS1 2011 000CN paper is picked up all move ment stops then jam message ERROR 13 when warming up 1 Registration plate bent or misaligned also check Does not get to 00 READY springs on this assy condition before paper jam 2 Replace Registration assy
124. sed by customers practice of INTERLEAVING different types of paper in paper trays Nylon roller slipping on paper up shaft item 15 Fig 8 21 Try adjusting position of scanning assy be aware the amount of print skew on printed page may increase see S N 2686A 1 Note there is a difference between the 1st printed line on the 2686A when compared to the 2686D In this case a problem resolution may not possible which could be offered to the customer There are differences between the physical paper paths The paper tray clutches are NOT stopping after one revolution Try 1 Check if tension provided by the solenoid armature spring is sufficient 2 Replace clutch spring and lubricate with light oil e g 3 in One Oil This model of LaserJet is a SIMPLEX printer and is not designed for Duplex printing Although this printer can print on both sides this practice is not supported by HP For the general HP statement on Duplex printing v Simplex please reference HP Reference Guide Green Book section 3 As above refer to HP general statement on Duplex printing v Simplex in HP Reference Guide Green Book section 3 Interleaving where a variety of paper is placed in the paper tray is not recommended by HP This practice ig likely to lead to Paper jams amp Misfeeds For the general HP statement on Interleaving Paper please reference HP Reference Guide Green Book section 3 2 19 2686A D MANUAL FEED PROB
125. ssage appears though paper doesappearin Error Tray Paul Kroon Holland HANGS ON LINE in DUPLEX no paperin holding tray large green knob in Duplex continuouslytuming Last pages on stacker has page numbering out ofsequence ERRATIC movement of O P STACKER Tray LHjam LED stacker on indicator display flickering DUPLEX JAMS as paper enters duplex from fuser TICKING noise from STACKER POWER SUPPLY FUSER TOWELrunning out after 20 30K pages 220 240v On power on AC Mains Circuit Breaker TRIPS OUT not printer cb Replace Engine PCA Double Feed had occured in Duplex Drop holding tray amp force2 pagesthrough the upper and lower separation rollers Ifthis can be easily achieved these rollers are wo and should be adj ed or replaced Faulty Stacker Power Supply 24v Verify by monitoring the 24v railon the Stacker Control PCA TP103 Ifsupplyisfaulty then the voltage will dip to 15 2 1v when self test isinitiated although it can measure 24v when the printer isidle A 10K l0watt resister item 80 Fig 8a 03 page 8a 10 in parallel with fusing towel motor assy had gone O C causing the motor to run fast This resistor is shown onthe BASIC PRINT ENGINE diagram page 9 3 middle left of AC Driver PCA 10K ohm 10 watt resistor for Fuser Towel motor was shorting down to earth This resistor is in parallel with Towel Motor 2684 MISCELLANEOUS Problems Con t MISPRINTS amp multiple c
126. ssed the printed image was This allowed the cassette tray to be inserted too far smaller than it should be causing incorrect tray size info to be sent to the DC New Info LJUD Controller PCA These Blocks do NOT show up in Service Manual on Page 8 45 item 1 It shows main body assy only not these blocks These blocks have the following P N RA1 3917 000CN LHS RA1 3913 000CN RHS 1I Replace these blocks WAITING FOR 02 1 Disconnect I F cable is fault still apparent Badly Forever wired I F cables have caused problems and normally shows up on Centronics cables Typically pin 36 is grounded causing the problem 2 Replace I F 05 SELF TEST message This problem was caused by the cable running by appears intermittently either lower fan rubbing and wearing then shorting one of whilst printer is idle or when the DC Power supplies voltages to ground printing Simply insulating the bared cable and re routing LJUD Feb 95 resolved this problem Intermittent ERROR 12 1 Replace AC Power assy ERROR 12 55 64 amp 67 1 Replace HVPS LIIV MVMDAND FAULTS WITH ERROR NUMBERS Con t ERROR 12 or 55 s I Check Jumper J209 is connected on DC Cont PCA 2 See Service Note 33440AB AU 09 when connected to a Vectra ERROR 12 110v printer used with step down transformer Printer would power up as LJIII began to take load a Clicking noise was heard and printer exhibited Error 12
127. ssy PS can not report Error 41 instead it displays PS BUSY Install diode in fuser assy Cheaper or replace fuser assy Expensive See service note 33471A 02B DC Controller PCA s this will fix in the short term but will fail again when the page counter reaches 2047 This is NOT a HP problem the customer MUST contact Pacific Page A temporary workaround is I Reset page counter to zero via Service Mode remove Pacific Page PS cartridge to do this 2 Use HP PS cart 33439Q or C2089A LJIIP only This problem should be resolved by now but may show up occasionally The problem has been identified down to the NVRAM page count of the LJHIP caused by the Pacifc Page PS Cartridge This page counter does not increment using this PS cartridge It seems when the counter reaches 2047 for some reason the PS Cart believes it has a Legal paper size installed This is why print image moves down the page CE s have in the past replaced both Formatter and DC Controller PCA s this will fix in the short term 4 19 LJ11P L J111P POSTSCRIPT PROBLEMS Con t Con t Se ge Be ee a a Te ee ee but will fail again when the page counter reaches 2047 This is NOT a HP problem the customer MUST contact Pacific Page or Dealer A temporary workaround is I Reset page counter to zero via Service Mode remove Pacific Page PS cartridge to do this 2 Use HP PS cart 33439Q or C2089A LJIIIP only This problem s
128. t operating correctly in the Duplex unit Remove the SEPARATION UNIT with drive assembly P 61 46 turn the weight raismg pulley CW and the weight should rise CCW and the weight should lower Ifthe weight tends to stick up then inspect clean lubricate the torsion spring clutch Fig 8D 05 items 8 17 23 which is probably slipping or else replace the entire drive assembly P N RG1 0434 000CN Paper under PS8 Duplex unit inlet paper sensor Fig 61 27 p6I 29 Replacing the Duplex Driver PCA RG1 0547 000CN resolved this pbm The trick here is to disconnect the Duplex assy at PU DU controller PCA or to disable Paper Jams using switches on the PD DU PCA Replace Stacker Power Supply 24v supply has failed or is failing The engine drive chain had stretched to the point where the bottom section of the chain was interfermg with the top section See Service Note2684 8 The gap between the transfer Separation corona s and EP Drum is too close This may be enough with certain types of paper to Skew the paper slightly The result of this is the paper enters the fuser skewed and this is when the creasing occurs The paper attempts to straighten itself up but does not succeed thus creasing Adjust gap between Trans Sep Corona amp EP Drum see page 7 14 of service manual Note If the gap is set too wide the leading edge of Duplex page can have light areas 5 28 Duplex Area Misc Problems Con t In DUPLEX light area s of
129. te 33440A 09 or 33440AU 01 2 Replaced Fuser Assy 3 Replace DC Controller PCA 4 Replace AC Power Module 5 Replace RG1 0912 000CN AC Power Module Cable 1 Replace RG1 0907 000CN Fusing Assy cable these are known to be intermittent See Service Note 33440A 09 2 Replace AC Power Module Cabie RGI 0912 000CN Replaced EP Cartridge customer was using refilled 1 Check cable from DC Controller PCA is fully inserted into connector at Optics assy J401 2 Replace DC Controller PCA 3 Replaced Optics to DC Controller Cable RG1 0908 000CN LJH AT AID DID FAULTS WITH ERROR NUMBERS Con t ERROR 51 intermittently Mike Duthie Aberdeen New Info LJTID Intermittent ERROR 51 Frank Dasilva London New Info LJIID ERROR 53 LJD Memory Incompatibility problem Dave Wassell B stoke May 94 Intermittent ERROR 51 52 s ERROR 52 a blank page moves through printer ERROR 55 ERROR 55 Only when Post Script Cart s 33439P Q are installed LJII only Trying normal parts did not fix this problem It was noticed that the customer was extremely gentle when closing down the lid Whereas the CE was not so dainty when shutting the lid Adjustment of the hinges and locking mechanism resolved problem It was believed that the Laser Shutter was not opening fully This fault occured on a LJHD On power up ERROR 16 Toner Low occurred Main motor tumed When print command was received by pr
130. the Top cover when the Release Button is Inoperative DC Controller PCA Interchangeability Notice 33449A 05 Fuser Assy Potentional Safety Concem 33459A 01A LaserJet IID Update for the HP33447A Service Personnel 33459A 02 DC Controller PCA Interchangeability Notice 33459A 03 Fuser Assy Potentional Safety Concem 33459A 04 Light Brown Oil Like Stain on the Front Side of a Duplexed Page 33443A 1 1 Mb Memory Card Accessory 33444A 1 2 Mb Memory Card Accessory 33445A 1 3 Mb Memory Card Accessory 26013A 1 HP26013A Status readback YO 88141A 1 JetScript Warranty Processing amp Quality Tracking 33439P 01 HP 33439P Q PostScript Cartridges 33439Q 01 HP 33439P Q PostScript Cartridges LJ2 2D 3 3D SX Engine Refurbishment Kit Both the 240v amp the 115v SX engines now have a Service Maintenence Kit available This kit is made available for long term wear and the printer still has NO PM schedule provi sion The P N for these kits are 33449 69008 240v kit 33449 69007 115v kit This kit includes the following parts for the LJE and LIM 240v or 115v Rebuilt Fuser Assy Paper Pick up Roller Separation Pad Transfer Corona Assy New Axial exhaust fan It does not include the Ozone Filter 922950 which should be replaced at SOK pages Printers not equipped with replaceable Ozone Housing should be updated by the CE using P N RG1 1753 000CN If the printers are LUD or LJIID s the additional parts should be ordered
131. the the mirror mount item 52 Fig 8A 04 P 8A 18 one is under the adjustment screw the other lower one acts as a Con t 5 5 2684 FAULTS WITH ERROR NUMBERS Con t backstop for the mirror mount The fix in this case was to re glue the lower disc in the correct position Use RF PROBE 34301A with DVM to adj see instructions for its use in Appendix B 1 at the end of this section Jt has found by experience replacing the Foldback Mir ror mount assy provides the long term fix as glueing rubber dics s have not proved to be to successful ERRORS3 OVERTEMP The problem was caused by a Defective FM5 fan After printer is switched offthen This fan blows air theough the Primary Corona in order on again Several pages will be to keep wires free from contamination Also if this fan is printed before this error occurs inoperative hot air will NOT be pulled from foldback mirror via the laser tunnel and laser unit This causes New Info the laser to overheat This fan is accessed from the front of the printer behind thelarge black plastic guard below mirror ERROR 54 DRUM MOTOR Faulty MOTOR DRIVER PCA MALFUNCTION ERROR 56 Image Counter Faulty DCCONTROLLER PCA Malfunction Will not pick up from Paper Replacing the PD DU PCA resolved this pbm The Trays or PDX also Intermit trick here was to disconnect the PDX amp Duplex units ERROR 57 Duplex Counter from the print engine Now try again will it pick paper Graham Jones
132. themselves the media operated ell in the LI CE sActions if Paper Problems are Suspected 1 Ensure a High Quality Laser paper is taken on site Xerox 80 grm Premier do NOT leave im car overnight 2 Take a copy of the paper spec guide 5002 1801 to give to customer Ensure your local office has a quantity to use for this purpose Does Paper meet Paper Spec s Guide Does media come under the heading of Papers likely to cause problems or papers to avoid 3 Ifpaper is suspected use Flow Diagram to help isolate problem 4 Keep customer involved at all times explain how important paper is for correct operation of their printer 5 Use HP LaserJet Reference Guide Known as Green Book paper section for further media information There is a paper suppliers list in this section that customer may wish to try 6 Show Paper Video to customer if appropriate this will help them better appreciate the importance of paper when used in HP LaserJet printers 5961 0712 PAL format or 5961 0711 NTSC format Factors that Contribute to Paper Path amp Print Quality Problems Does the media meet the Paper Spec s outlined in Paper Spec Guide 5002 1801 Is the customers media in good condition damaged bent skew wrinkled or Dog Eared Are media handling practices being observed loading paper removing Paper Jams Has the media customer is having problemswith ever worked Is media being conditioned before use Media MUST sta
133. ths These figures are condotional on the following Store away from direct sunlight or other strong lights Store as specified on the shipping box or horizontally flat if out of box Store in normal office environment i e a location with regulated temperature and humidity Use the cartridge before the expiry date stamped on toner cartridge box The LaserJet 2000 EP Drum has a storage life of typically 2 year provided the drum is stored at an environmental specification of 0 35 deg C 35 85 RH 460 760 mmHg Decoding Date Code or Lot Code of Toner Cartridges Example lot code 3D12S2 3 year 1993 in this case D month of manufacture A Jan B Feb C Mar D April etc 12 day of month S1 or S2 different production lines 1 11 Engine Test with Formatter De installed Itsnot commonly known that is possible to run the print engine test with the Formatter PCA removed Simply gain accessto the Formatter board disconnect it and remove Locate the print engine test button power on printer and press this button The only case where Divisions advise this will not work is the C3100A Colour printer Of course there will be no display but the Tramlines print of the engine test should be printed This can be useful in the following circumstances 1 Thin vertical black line down page appears in same place The Formatter PCA is known to cause this problem Note position of line remove Formatter run engine test has line d
134. tioning property Re seating this solenoid solved problem Upper paper tension springs items 35 p 8B 10 were not strong enough causing paper to be insufficiently gripped by upper stacker drive rollers items 23 amp 36 on page 8B 12 Lift stacker top and pull jammed sheet through there should be some drag caused by the rollers After leaving the fuser assy it was found that the paper was slowing down considerably in the FDS Roller shaft Item 67 on page 8b 22 is driven by a Spring loaded Clutch via a drive belt This clutch has rubber washers which had perishes After cleaning bearings and replacing rubber washer operated correctly Refer to page 7 20 for more detail I Replaced rubber washers RS1 6021 000CN item 35 page 8b 22 and Clean clutch and bearing Switchback feeder motor M2 not moving due to low 24v at this motor Faulty Switchback Control PCA Replace FDS Stacker Power Supply Deflection shaft seized due to grease in bearing congealing cleaned then OK Faulty FDS CONTROL PCA Although 5v was coming from the power supply there was no 5v on the Stacker Control PCA Replace this PCA 5 21 FDS Stacker Area Con t 13 2 Paper Jam as paper begins to exit delivery rollers at the top of the stacker assy New Info Delivery clutch had seized Item 16 page 8b 12 P N RH7 5007 000CN This is CL1 Delivery Roller Chutch This clutch can also be noisy and may be the cause of stacker power supply failure R
135. ttention to the smoothness 100 250 Sheffield and or Wax Pick gt 11 Dennison 2 A lighter Density setting will ensure less toner used thus minimising problem 3 A lighter character stroke may also help Customers who have many LJII s on local networks amp then purchase LJUT s notice when one of the users selects an incorrect paper size all other users of this LJMI are unable to print on it until the printer is manually reset This is NOT true for the LJI 3 14 LJIDAIPMD THD MISCELLANEOUS Cont NO STATUS Request Info Returned by printer Con nected to 3000 LIED II HD VO Protocol changes from CENTRONIC s to Factory Default SERIAL New Info Optional VO which was select ed via the Front Panel returns to default Serial LJIIVIIID Anja Rabold PGE New Info CANNOT Configure PAGE PROTECT to Letter Legal etc size paper together with the OPTIONAL VO LIT IID New Info Hans Hjertquist Boise Not FUSING correctly IM MD Cannot OPEN TOP COVER when the release button is depressed LIID The LJOQD and later were unable to respond to status requests Esc DCI The Optional Status Read board 26013A plugs into the Optional I O slot provides the status readback This allows the LJID LIM amp LIIMID to be connected to a 3000 Term type 26 is recommended Install 26013A into Optional I O slot to resolve this problem Power Fails may cause this problem LJIII HI
136. vice Note 2684A 10 for Geater Detail 5 43 Running Standard Self Test Take printer OFF LINE and press SELF TEST key The self test page will then be printed Running CE Mode Paper Path Test 1 Power off printer 2 Open access door on RH end of the Formatter and Y O area 3 On Formatter PCA set switch 12 2 to CLOSED see page 6 25 in service manual 4 Power ON the printer 5 After warm up take printer OFF LINE 6 Press MENU key until SELF TEST STANDARD appears 7 Press the UP arrow key press SHIFT key to display s at right 8 Press ENTER key to change the display to an asterisk 9 Press MENU key to retum to 00 PRINTER READY 10 Press SELF TEST key 12 pages will printer 4 from each source 6 duplex Note DO NOT leave in CE MODE Running Factory RUN IN Mode Paper Path Test Adopt same process as above but this time set both 12 2 and 12 3 to CLOSED This will print 180 page 60 from each I P source in a combination of Simplex Duplex pages Some pages will be emitted from the ERROR tray and the remainder from the O P tray This is quite a comprehensive test to use Note DO NOT leave in CE MODE RUN IN MODE 5 44
137. y Error s 60 63 and 67 may be caused by loose cabling If the cable are not securely fixed down the printer may exhibit these problems Check all earthing assoicated with Transfer Corona ensure all earth connection and all wires associated with Varistor PCA have good continuity check 16Meg ohm R9 by Transfer Corona is OK No FRONT PANEL 1 Probably the I F power supply that lies at the bottom DISPLAY of the 2686A Check the 5 volts coming from this PCA 2 Faulty YF PCA 3 Check wires under I F Power Supply have not been punctured especially after reassembly If care has not been taken to route lower cables carefully this cause unit to Smoke and damage VF PCA VERY LONG WAITING See PERMANENT 02 in 2686A D Faults with FOR DATA 02 on Display Error Numbers at the beginning on this section of Front Panel manual Will not recognise NEW Reference Service Note 2686A 5 CHARACTER FONTS 92286 92286G amp 92286H Laserjet 2686 plus outputs at Reference Service Note 2686A 6 50 of expected rate with some applications when using Note Throughput OK when using internal default font operational fast font cartridge TONER CARTRIDGE 1 Customer not shaking cartridge problem s 2 End stops fallen out see Video Problem only seen in the early introduction phase of this printer 3 Drum Shutter damage L to R fade 4 TONER Cartridge in red zone 5 DFS Cartridge 6 See LASER PRINTER PRINT QUALITY

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