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HP LaserJet M1120 MFP Series - Service Manual. www.s

1. 6 Serial number and model number location cecceccceceeeeceeeeeeeeeeeeececcscnnceecaeeaeeeeeeeeeess 6 Software description seine 7 Supported operating systems rtns nne 7 Supported printer drivers ses 7 Software included with the product ss 7 Easy installation for Windows seseeen mes 7 Advanced installation ss 8 Macintosh SOMWANE oet Mente Men lite td exte e RARI A qn HA Rude din 8 Software for Windows see 9 Embedded Web server network models only 9 Status Alerts software sse nnns aA nnne rentrer nnne nnn 9 Other Windows components and utilities sssssssseme 9 Software for Macintosh sise 10 Embedded Web server network models only 10 AP Director e In 10 Uriinstall SoftWate 3 irr eene desert eere Fe de ede a e re E ETE e a dE ees aide Ye REEE 11 Li dafeo e 11 Mese EE 11 M dia Specifications 12 Supported paper and print media sizes sssssssssssseemem nennen nrnna 12 Supported paper types and tray capacity ssssssssssssssssee nnnm nn nn 13 2 Installation Site preparations EEEE 16 ire rezept 16 Minimum system requirements 44444 cce tete denen nete ceden
2. 46 BID 46 Phillips and pozidrive screwdriver comparison sssssssssssssseseeen eee 49 Pars romoval OF OOM D 52 Remove the link assemblies and scanner support frame spring 1 of 4 53 Remove the link assemblies and scanner support frame spring 2 of 4 54 Remove the link assemblies and scanner support frame spring 3 of 4 54 Remove the link assemblies and scanner support frame spring 4 of 4 55 Remove the scanner lid 1 of 2 idis eet A EENE E 56 Remove the scanner lid 2 of 2 iii 56 Remove the control panel overlay sienne 57 Remove the control panel assembly 1 of 3 58 Remove the control panel assembly 2 of 3 58 Remove the control panel assembly 3 of 3 59 Remove the scanner assembly 1 of 10 60 Remove the scanner assembly 2 of 10 60 Remove the scanner assembly 3 of 10 61 Remove the scanner assembly 4 of 10 easet ainsi 61 Remove the scanner assembly 5 of 10 62 Remove the scanner assembly 6 of 10 62 Remove the scanner assembly 7 Of 10 63 Remove the scanner assembly 8 of 10 63 Remove the scanner assembly 9 of 10 64 Remove the scanner assembly 10 of 10 64 Remove the print cartridge 1 of 2 emm enne nnn nennen 65 Remove the print cartridge 2 08 2 2 2e cette ctt estet nette NEAN dua coa robado 65 xi Figure 5 25 Figure 5 26 Figure 5 27 Figure 5 28 Figure 5 29 Figure 5
3. Light LED green Light guide emitter I y LED blue i X 3 I I LI uM Light receiver Scanner operation At startup and periodically at other times the scanner assembly moves systematically to locate its home position It then calibrates to a white strip located under the glass at the right end of the scan tub ENWW Scanner functions and operation 37 Internal components base unit Figure 4 4 Cross section of printer Q 9 1 Fuser unit 2 Pressure roller 3 Fuser sleeve 4 Delivery roller 5 Laser scanner unit 6 Single sheet feed slot 7 Multi purpose tray 8 Photosensitive drum 9 Pickup roller 10 Separation pad 11 Feed roller 12 Transfer roller 38 Chapter 4 Operational theory ENWW Engine control system The engine control system coordinates all of the product functions according to commands sent from the formatter It drives the laser scanner system the image formation system and the pickup feed delivery system The engine control system contains the following components e DC controller e Low voltage power supply e High voltage power supply e Fusing control Figure 4 5 Engine control system Em um em dmm m ms un d 1 ENGINE CONTROL SYSTEM DC control
4. a Paper path 4 Rotational direction of the drum pence RER PE 222 R52 Sno Nessses ss Step 1 Primary charging DC and AC biases are applied to the primary charging roller which transfers a uniform negative potential to the photosensitive drum Figure 4 10 Primary charging Primary charging roller A Dc bias ENWW Image formation system 43 Step 2 Laser beam exposure The laser beam scans the photosensitive drum to neutralize negative charges on parts of the drum An electrostatic latent image is formed on the drum where negative charges were neutralized Step 3 Developing The developing cylinder comes in contact with the photosensitive drum to deposit toner onto the electrostatic latent image Gf NOTE The charges on the exposed area of the drum are shown as positive in Figure 4 11 Developing on page 44 The charges are actually negative but they are more positive than the charges on the developing cylinder Figure 4 11 Developing Blade Cylinder Magnet Developing cylinder z Dc bias 777 Toner acquires a negative charge through friction from the developing cylinder and the blade When the negatively charged toner comes in contact with the drum the toner adheres to the electrostatic latent image The image on the drum becomes visible because of the toner Step 4 Transfer The transfer charging roller to which a DC positive bias is applied imparts a positive charge on th
5. Double postcard 148 x 200 mm 5 83 x 7 87 in NININI amp IS NININI amp IS Supported paper types and tray capacity ENWW This product has the following tray priority for feeding print media 1 Priority input tray 2 Tray1 Minimum media dimensions are 76 x 127 mm 3 x 5 in Maximum media dimensions are 216 x 356 mm 8 5 x 14 in To obtain the best print results change the paper size and paper type settings in the printer driver before printing Table 1 4 Supported paper types and tray capacity Type is Media specifications Priority input tray Tray 1 capacity Plain 75 g m 201b to 104 g m 27 Ib Up to 10 sheets Up to 250 sheets Color Preprinted Prepunched Recycled Light 60 g m 16 Ib to 75 g m 20 Ib Up to 10 sheets Up to 260 sheets Envelopes Less than 90 g m 24 Ib 1 envelope Up to 10 envelopes Labels Standard 1 sheet Not supported Bond 75 g m 201b to 104 g m 271b 1 sheet Up to 250 sheets Rough 75 g m 201b to 104 g m 27 Ib 1 sheet Up to 200 sheets Transparencies 4 mm 0 1 in Monochrome 1 sheet Up to 200 sheets Overhead Heavy 110 g m 29 Ib to 125 g m Up to 10 sheets Not supported 33 Ib Letterhead 75 g m 20 Ib to 104 g m 271b Up to 10 sheets Up to 250 sheets 1 The maximum stack height for tray 1 is 25 mm 1 inch Media specifications 13 14 Chapter 1 Product information ENWW ENWW Installation e Site preparations e Whatwasin
6. In your software program rotate the whole page 180 to print the lighter image first The order of images printed might affect printing Change the order in which the images are printed For example have the lighter image at the top ofthe page and the darker image farther down the page A power surge might have affected the product If the defect occurs later in a print job turn the product off for 10 minutes and then turn on the product to restart the print job Print problems 123 Scan problems Solve scanned image problems Problem Cause Solution The scanned image is of poor quality The original might be a second generation photo or picture e Toeliminate the patterns try reducing the size of the image after scanning e Printthe scanned image to see if the quality is better e Verify that the resolution settings are correct for the type of scan job that you are performing The image that appears on the screen might not be an accurate representation of the quality of the scan e Tryadjusting your computer monitor settings to use more colors or levels of gray Typically you make this adjustment by opening Display in Windows Control Panel e Try adjusting the resolution settings in the scanner software The original might have been loaded incorrectly Verify that the original is loaded correctly on the flatbed scanner See Install input devices on page
7. Make sure that the priority input tray is in place The print density setting is too high Decrease the print density setting through the print driver This decreases the amount of background shading Very dry low humidity conditions can increase the amount of background shading The print cartridge might be defective If you are using a non HP print cartridge no messages appear on the product control panel Check the product environment Replace the print cartridge See Print cartridge on page 25 Toner smears appear on the media AaBbCc AaBhCc AaBkhCc AQBRCC AaBbCc The media might not meet HP specifications Use media that meets HP specifications If toner smears appear on the leading edge of the paper the media guides are dirty or debris has accumulated in the print path Clean the media guides and the paper path See Clean the paper ath on page 29 The fuser temperature might be too low In the printer driver make sure the appropriate media type is selected The toner smears easily when touched AQBe amp c The product is not set to print on the type of media on which you want to print In the printer driver select the Paper Quality tab and set Paper Type to match the type of media on which you are printing Print speed might be slower if you are using heavy paper The media might not meet HP specifications The paper path
8. Supplementry documentation and support Table 7 5 Documentation print on demand Description Service manual this manual Languages English only Part number CB537 90945 Getting Started guides English Spanish Portuguese French CB537 90901 English Spanish Portuguese Catalan Dutch French German Italian CB537 90902 English Danish Finnish French Norwegian Swedish Arabic CB537 90903 English Bulgarian Czech Hungarian Polish Romanian Russian Slovak CB537 90904 English Kazakh Turkish Ukrainian Estonian Latvian Lithuanian CB537 90905 English Croation Greek Serbian Slovenian Hebrew CB537 90906 English Korean Indonesian Chinese simplified Chinese traditional Thai Vietnamese CB537 90907 User guides English CB537 90908 Arabic CB537 90943 Bulgarian CB537 90914 Chinese simplified CB537 90915 Chinese traditional CB537 90939 Croatian CB537 90916 Czech CB537 90917 160 Chapter 7 Parts ENWW ENWW Table 7 5 Documentation print on demand continued Description User guides continued Languages Part number Danish CB537 90918 Dutch CB537 90919 Estonian CB537 90920 Finnish CB537 90921 French CB537 90909 German CB537 90910 Greek CB537 90922 Hebrew CB537 90944 Hungarian CB537 90923 Indonesian CB537 90924 Italian CB537 9091
9. Turn the paper over The paper is too moist too rough too heavy or too smooth has the wrong grain direction or is of short grain construction or it is embossed or from a faulty paper lot Try another kind of paper between 100 and 250 Sheffield 4 to 6 moisture content Use long grain paper Print is skewed crooked The media guides might be incorrectly adjusted Remove all media from the input tray straighten the stack and then load the media in the input tray again Adjust the media guides to the width and length of the media that you are using and try printing again More than one sheet feeds at one time The media tray might be overloaded Remove some of the media from the tray See Install input devices on page 19 The media might be wrinkled folded or damaged Verify that the media is not wrinkled folded or damaged Try printing on media from a new or different package The product does not pull media from the media input tray The product might be in manual feed mode e If Manual appears on the product control panel display press OK to print the job e Verify that the product is not in manual feed mode and print your job again The pickup roller might be dirty or damaged Contact HP See www hp com support LJM1120 or the support flyer that came in the product box The paper length adjustment control in tray 1 is set at a length that is greater th
10. Dutch NL CB537 00008 Control panel overlay Italian IT CB537 00009 Control panel overlay Swedish SV CB537 00010 Control panel overlay Norwegian NO CB537 00011 Control panel overlay Finnish Fl CB537 00012 Control panel overlay Danish DA CB537 00013 Control panel overlay Russian RU CB537 00014 Control panel overlay Czech CS CB537 00015 Control panel overlay Hungarian HU CB537 00016 Control panel overlay Control panel overlay Polish PL Slovak SK CB537 00017 CB537 00018 Control panel overlay Turkish TR CB537 00019 Control panel overlay Greek EL CB537 00020 Control panel overlay Hebrew HE CB537 00021 Control panel overlay Arabic AR CB537 00022 Control panel overlay Traditional Chinese ZHTW CB537 00023 Control panel overlay Korean KO CB537 00024 Control panel overlay Simplified Chinese ZHCN CB537 00025 Control panel overlay Thai TH CB537 00026 Control panel overlay Vietnamese VI CB537 00027 Control panel overlay Catalan CA CB537 00029 Control panel overlay Romanian RO CB537 00030 Control panel overlay Croation HR CB537 00031 Control panel overlay Slovenian SL CB537 00032 Control panel overlay Indonesian ID CB537 00033 Control panel overlay
11. dy i ll Nu Mb 7 Unclip two clips callout 9 and remove one plastic bracket callout 10 A CAUTION The wire harness callout 11 attached to the bracket is not captive Do not lose this wire harness when the bracket is removed Figure 5 56 Remove the power supply 7 of 7 7 84 Chapter 5 Removal and replacement ENWW 8 Remove three screws callout 12 Remove the power supply ENWW Product base 85 Scanner support frame 1 Remove the following assemblies Scanner assembly See Scanner assembly on page 60 Right and left cover See Side covers on page 74 Print cartridge door See Print cartridge door on page 76 Rear cover and fuser cover See Rear cover and fuser cover on page 77 Front cover See Front cover on page 79 2 Remove six screws callout 1 A CAUTION Be careful not to drop any screws into the product Gj NOTE If you turn over the scanner support frame after you remove it the two scanner cushions callout 2 might fall out and be misplaced Figure 5 58 Remove the scanner support frame 1 of 5 86 Chapter 5 Removal and replacement ENWW 3 Rotate the gear drive bracket until the retainer on the gear drive arm aligns with the opening in the bracket and remove the bracket Figure 5 59 Remove the scanner support frame 2 of 5 4 Remove one screw callout 3 and the ferrite and bracket callout 4 A CAUTION The ferrite is not captive
12. http www hp com hpinfo globalcitizenship environment productdesign ecolabels html Toner consumption EconoMode uses less toner which might extend the life of the print cartridge Paper use This product s duplex feature two sided printing and N up printing multiple pages printed on one page capability can reduce paper usage and the resulting demands on natural resources 190 Appendix C Regulatory information ENWW Plastics Plastic parts over 25 grams are marked according to international standards that enhance the ability to identify plastics for recycling purposes at the end of the product s life HP LaserJet print supplies It s easy to return and recycle your empty HP LaserJet print cartridges free of charge with HP Planet Partners Multilingual program information and instructions are included in every new HP LaserJet print cartridge and supplies package You help reduce the toll on the environment further when you return multiple cartridges together rather than separately HP is committed to providing inventive high quality products and services that are environmentally sound from product design and manufacturing to distribution customer use and recycling When you participate in the HP Planet Partners program we ensure your HP LaserJet print cartridges are recycled properly processing them to recover plastics and metals for new products and diverting millions of tons of waste from landfills Since this cartridge
13. August 2007 For regulatory topics only European Contact Your Local Hewlett Packard Sales and Service Office or Hewlett Packard GmbH Department HQ TRE Standards Europe Herrenberger Strasse 140 D 71034 B blingen FAX 49 7031 14 3143 http www hp com go certificates USA Contact Product Regulations Manager Hewlett Packard Company PO Box 15 Mail Stop 160 Boise ID 83707 0015 Phone 208 396 6000 194 Appendix C Regulatory information ENWW Safety statements Laser safety The Center for Devices and Radiological Health CDRH of the U S Food and Drug Administration has implemented regulations for laser products manufactured since August 1 1976 Compliance is mandatory for products marketed in the United States The device is certified as a Class 1 laser product under the U S Department of Health and Human Services DHHS Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968 Since radiation emitted inside the device is completely confined within protective housings and external covers the laser beam cannot escape during any phase of normal user operation A WARNING Using controls making adjustments or performing procedures other than those specified in this guide may result in exposure to hazardous radiation Canadian DOC regulations Complies with Canadian EMC Class B requirements Conforme la classe B des normes canadiennes de compatibilit l
14. CC459 67901 AB1 Korea Korean localization CC459 67902 AB2 China Simplified Chinese CC459 67903 AB3 Thailand Thai CC459 67904 AB4 Singapore English CC459 67905 BFV Hong Kong SAR English Traditional Chinese CC459 67906 ABG Australia English CC459 67907 A2K Philippines English CC459 67908 ACJ India English CC459 67909 AK3 Indonesia Indonesia localizaton CC459 67910 UUD Vietnam Vietnamese localization CC459 67911 ARR Asia Pacific Euro Cord English CC459 67912 ARS Asia Pacific UK Cord English CC459 67913 Whole unit replacement 155 Table 7 2 Whole unit replacement product bundle CC459A continued Country region Europe Middle East and Africa Localized configuration ABD Germany German ABF France French Replacement part number CC459 67914 CC459 67915 ABH Netherlands Dutch CC459 67916 ABZ Italy Italian CC459 67917 ABE Spain Spanish localization CC459 67918 BFY Spain Catalan localization CC459 67919 ABU United Kingdom English CC459 67920 B14 Belgium Dutch French CC459 67921 AR8 Switzerland French German CC459 67922 BB1 Norway Finland Sweden NO FI SV localization CC459 67923 ABY Denmark Danish CC459 67924 ACB Russia Cyrillic CC459 67925 BCM Czech Rep Slovakia Czech Slovak localization CC459 67
15. Do not bend or fold the flat flexible cables FFCs during removal or installation Also do not straighten pre folds in the FFCs You must make sure that all FFCs are fully seated in their connectors Failure to fully seat an FFC into a connector can cause a short circuit in a PCA amp NOTE Your product might not appear exactly as the one shown in the photos in this chapter For example the color of the external panels and covers might be different than your product However this does not affect the validity of the procedures in this chapter X TIP To install a self tapping screw first turn it counterclockwise to align it with the existing thread pattern and then carefully turn it clockwise to tighten Do not overtighten 48 Chapter 5 Removal and replacement ENWW Electrostatic discharge A a CAUTION ESD The product contains components that are sensitive to electrostatic discharge ESD Always perform service work at ESD protected workstation If an ESD protected workstation is not available discharge body static by grasping the print engine chassis before touching an ESD sensitive component Ground the print engine chassis before servicing the product Required tools e 2 Phillips screwdriver with magnetic tip e Small flat blade screwdriver e Long flat blade screwdriver e Needle nose pliers e ESD mat if one is available e Penlight optional CAUTION Always use a Phillips screwdriver callout 1 Do
16. If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase separation between equipment and receiver e Connect equipment to an outlet on a circuit different from that to which the receiver is located e Consult your dealer or an experienced radio TV technician NOTE Any changes or modifications to the printer that are not expressly approved by Hewlett Packard could void the user s authority to operate this equipment Use of a shielded interface cable is required to comply with the Class B limits of Part 15 of FCC rules Environmental product stewardship program Protecting the environment Hewlett Packard Company is committed to providing quality products in an environmentally sound manner This producthas been designed with several attributes to minimize impacts on our environment Ozone production This product generates no appreciable ozone gas O3 Power consumption Power usage drops significantly while in Ready Sleep mode which saves natural resources and saves money without affecting the high performance of this product To determine the ENERGY STARG qualification status for this product see the Product Data Sheet or Specifications Sheet Qualified products are also listed at
17. clearing 115 preventing 117 print cartridge area clearing 116 trays clearing 112 K Korean EMI statement 195 L laser safety statements laser scanner assembly diagrams 147 protective cover 48 remove 89 laser scanner system operations 41 laser scanner unit locating 38 left side cover remove 74 lid cleaning 28 life expectancies supplies 24 light copying 128 light print troubleshooting 120 lightness faded print troubleshooting 120 195 196 ENWW lines troubleshooting copies 128 printed pages 120 link assemblies remove 53 loading media priority input tray 19 locating internal components 38 loose toner troubleshooting 121 M Macintosh drivers supported 7 Intel Core Processor 7 PPC 7 support 184 supported operating systems 7 system requirements 17 uninstall software 11 main input tray remove 71 main motor remove 93 maintenance agreements 184 manuals 2 material restrictions 192 Material Safety Data Sheet MSDS 192 media curled troubleshooting 122 138 feeding operations 42 jams 111 pickup feed delivery system 42 supported sizes 12 wrinkled 123 memory NVRAM initialization 135 specifications 4 menu map printing 30 menus secondary service 135 Service 138 mercury free product 192 messages control panel 108 critical 109 model number locating 6 motor location 144 motors remove 93 multi purpose tray locating 38 N network port locating 6 141 noise specifications 1
18. esssssssssssssssseseeeennenne 34 Scanner functions and operation sise 36 Scanner TUNCtIONS HE 36 Scanner Operation MEE 37 Internal components base Uni annsin Aaaa E ce tana cc e eaa Da ERR RR ca e ER Ra 2a 38 Engine control SYSt nis uui oai aetate aei nn a etant Dn Reda DX o a 39 Laser Scanner SySter ste attire nni aa EN nado aad tue a d vo dee uad aan aL un 41 Pickup feed delivery system sise 42 Irmage formatiorn System rated i e de RA Eee e Eua vei Rue ee ERE e HARE PAR ERR einn 43 5 Removal and replacement Removal and replacement strategy iii 48 IMFO DUCUON ec M 48 Removal and replacement warnings cautions notes and tips 48 Electrostatic discharge 4 usines 49 Required ioo S E 49 Before performing service sisi 49 After performing Service siii ttt cerea era lente tantu EEE 50 Postservic TESTS deca aea tre manne lanta cce E RARE SDN eat sat e a SEDED ER ERR EL 2 51 Test 1 print quality test 1 aie e retia diene dele dinar et 51 Test 2 copy quality test sssssssssee mem 51 Parts removal Order 52 Scanner assembly preter rto rea egy sede tea Ud d Fe cargas donateur 53 Link assemblies and scanner support frame spring ecccccceececeeeeeeeeeeeeeeeeeeeeeeeeteeeees 53 ferar EUER 56 Control panel overlay 3 oie ettet rete i ane tomates emilie 57 iv ENWW Control panel aSSembly sister
19. 000CN 1 RC1 2498 000CN 1 RC1 2499 000CN 1 Internal components 2 of 3 173 Internal components 3 of 3 Figure 7 6 Internal components 3 of 3 174 Chapter 7 Parts ENWW ENWW Table 7 11 Internal components 3 of 3 Description Laser scanner assembly Motor controller PCA Tray guide left Tray guide right Motor 24V DC Part number Qty RM1 4724 005CN 1 RM1 4935 000CN 1 RC2 2979 000CN 1 RC2 2980 000CN 1 RM1 4196 000CN 1 Internal components 3 of 3 175 Alphabetical parts list Table 7 12 Alphabetical parts list Description Part number Table and page Control panel assembly LJm1120 Asian CB537 60110 Scanner assemblies on page 165 Control panel assembly LJm1120 Western CB537 60109 Scanner assemblies on page 165 Control panel overlay See Control panel Assemblies on page 167 overlays on page 157 Cover cartridge RC2 2960 000CN External covers and panels on page 169 Cover front RL1 1734 000CN External covers and panels on page 169 Cover left RL1 1735 000CN External covers and panels on page 169 Cover rear Cover right RC2 2971 000CN RL1 1736 000CN External covers and panels on page 169 External covers and panels on page 169 Cover top RL1 1732 000CN External covers and panels on page 169 Cushion scanner RC1 2476 000CN External cove
20. 1 Kazakh CB537 90925 Korean CB537 90926 Latvian CB537 90927 Lithuanian CB537 90928 Norwegian CB537 90929 Polish CB537 90930 Portuguese CB537 90931 Romanian CB537 90932 Russian CB537 90933 Serbian CB537 90934 Slovak CB537 90935 Slovenian CB537 90936 Spanish Catalan Spanish mid Atlantic CB537 90913 CB537 90912 Swedish CB537 90937 Thai CB537 90938 Turkish CB537 90940 Ukrainian CB537 90941 Vietnamese CB537 90942 Supplementry documentation and support 161 Parts lists and diagrams How to use the parts lists and diagrams The figures in this chapter show the major subassemblies in the product and their component parts A parts list table follows each exploded view assembly diagram Each table lists the item number the associated part number and the description of each part If a part is not listed in the table then it is not a field replaceable unit FRU A CAUTION Be sure to order the correct part When looking for part numbers for electrical components pay careful attention to the voltage that is listed in the description column to ensure that the part number selected is for the correct product model NOTE Inthis manual the abbreviation PCA stands for printed circuit board assembly Components described as a PCA might consist of a single circuit board or a circuit board plus other parts such as cables and sensors 162 Chapter 7 Parts ENWW Types of screws Illu
21. 126 staple cassette life expectancy 24 static precautions 49 status supplies checking 24 storing environmental specifications 187 print cartridges 24 streaks troubleshooting 120 supplies HP fraud hotline 27 life expectancies 24 manage 24 non HP supplies HP Policy 26 print cartridges replacing 25 recycling 191 replacing 25 status checking 24 storing 24 support online 184 repacking device 184 support frame scanner remove 86 supported media 12 SupportPack HP 184 system requirements 17 T technical support online 184 repacking device 184 telephone numbers HP fraud hotline 27 temperature specifications environment 187 tests copy quality 51 engine test page 131 half self functional check 132 heating element 133 high voltage power supply 133 post service 51 print quality 51 text troubleshooting 122 toner cleaning page printing 138 loose troubleshooting 121 scatter troubleshooting 123 smeared troubleshooting 121 specks troubleshooting 120 tools required 49 troubleshooting 137 transfer roller remove 73 transfer rollers locating 38 transfer unit warranty 183 tray 1 install 20 jams clearing 112 locating 5 trays capacities 4 capacity 13 feeding operations 42 jams clearing 112 multi purpose locating 38 pickup feed delivery system 42 remove 71 troubleshooting blank scans 126 checklist 106 cleaning page 138 configuration page 137 control panel messages 108 copy quali
22. 143 Solenoid and motor sereine 144 ROIIBFS 8 sdtane eine snemuns esse E a a e vance ceeeabdeceaceet enter ie acene matinale 145 SENSO er 146 Major compone ms 15sesiresstgsentehettresunerntgerane in entente sprl states let later dal nie sta E 147 PCAS base Unit C 148 Whole unit replacement product bundle CC537A 00 cceccccccccecceeceeeeeeeeeeeeceececenseccaesaeeaeeeeeeeeeees 153 Whole unit replacement product bundle CC459A 00 ceecccccecceeceeceeeeeeetecteeeeeeaeeaaaeaaesaeeaeeeeeeeeeees 155 Control panel overlays HP LaserJet M1120 sssssssssseseen eene 157 Control panel overlays HP LaserJet M1120n ss 158 Documentation print on demand sis 160 Scanner assemblies 1steMeresaehannitennaeilannat Nes een nent tien dens 165 LCC njesnrgeec 167 External covers and panels peser cha teet ce nnd na no sanciuecees HERE RT CE FE n Ene FIR AER ERR Resale Ya 169 Internal components 1 of 3 sisi 171 Internal components 2 Of Shine deer dnt ri dee ee RR e HR eve ERR 173 Internal components 3 of 3 175 Pelszlor nTo Bercipdljeem Em 176 Numerical parts llt icti reed vetet ennt Da aede e RR it anna AVE AN Ke ua tendon Ende dud xau 178 Physical specications serci netas pans 186 Electrical Specifications eie three tee Min messes ententes M estate 186 Power consumption average in watts
23. 19 The scanner might be dirty Clean the scanner See Clean the flatbed scanner glass on page 28 The graphics settings might not be suitable for the type of scan job that you are performing Try changing the graphics settings Part of the image did not scan The original might have been loaded incorrectly Verify that the original is loaded correctly on the flatbed scanner A colored background might be causing images in the foreground to blend into the background Try adjusting the settings before you scan the original or enhancing the image after you scan the original The original is too small The minimum size that the flatbed scanner supports is 25 x 25 mm 1 x 1 inch The media size is incorrect In Scan settings make sure that the input media size is large enough for the document that you are scanning 124 Chapter6 Problem solve ENWW ENWW Problem Cause Solution The scan takes too long The resolution or color level is set too high Change the resolution and color settings to the correct settings for your job The software is set to scan in color The system default is color which takes longer to scan even when scanning a monochrome original If you acquire an image through TWAIN or WIA you can change the settings so that the original scans in grayscale or black and white See the product software Help for details A print job or copy job was sen
24. 4 seed ien eee ERR eed ae ERE ER aA dae FEE E Rae de AARE EEEE 74 Remove the side covers 3 of 4 eite drehte n rA dn Bel tante Ir RA Eni 75 Remove the side covers 4 Of 4 sus tb E E He POES TUAE bana SE Rak tu cd 75 Remove the print cartridge door 1 of 2 76 Remove the print cartridge door 2 of 2 76 Remove the rear cover and fuser cover 1 of 3 77 Remove the rear cover and fuser cover 2 of 3 77 Remove the rear cover and fuser cover 3 Of 3 78 Remove the front cover 1 of 4 iii 79 Remove the front cover 2 of 4 22e Eee Dep e daa esse e einen 79 Remove the front cover 3 of 4 iii 80 Remove the front cover A of 4 sorrerari ie teet tenant Hodie Pts 80 Remove th formatter eR ERR DPI DUM EC I Mrd 81 Remove the power supply 1 of 7 ie 82 Remove the power supply 2 of 7 iii 82 Remove the power supply 3 of 7 iii 83 Remove the power supply 4 of 7 iii 83 Remove the power supply 5 of 7 iii 84 Remove the power supply 7 of 7 iii 84 Remove the power supply 7 of 7 iii 85 Remove the scanner support frame 1 of 5 86 Remove the scanner support frame 2 of 5 87 Remove the scanner support frame 3 of 5 87 Remove the scanner support frame 4 of 5 88 Remove the scanner support frame 5 of 5 88 Remove the laser scanner 1 of 7 uses 89 Remove the laser scanner 2 of 7 iii 90 Remove the laser scanner 3 of 7 sien 90 Remove the laser scanner 4 of 7 iii
25. 91 Remove the laser scanner assembly 5 of 7 91 Remove the laser scanner assembly 6 of 7 92 Remove the laser scanner assembly 7 of 7 92 Remove the main motor 1 of 4 eene nnnm emen nennen nennen 93 Remove the main motor 2 Of 4 stunt CA ELE CREARE ERR M ad AES RUEA 94 Remove the main motor 3 of 4 iii 94 Remove the main motor 4 of 4 eene 95 Remove the Taser TOLO tie Pe REESE FREI Be dE Re nd tiae 96 ENWW Figure 5 75 Figure 5 76 Figure 5 77 Figure 5 78 Figure 5 79 Figure 5 80 Figure 5 81 Figure 5 82 Figure 5 83 Figure 5 84 Figure 5 85 Figure 5 86 Figure 5 87 Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 6 5 Figure 6 6 Figure 6 7 Figure 6 8 Figure 6 9 Figure 6 10 Figure 7 1 Figure 7 2 Figure 7 3 Figure 7 4 Figure 7 5 Figure 7 6 ENWW Remiove the fuser 2 0f 6 Mais ie eere dd ee i d e sente 97 Remove the fuser 3 of 6 tiet itp dieit panne ion cana sale Pana hola ee lade tement nine ede 97 Remove the fuser 4 of 6 aee et etr eter tee E La eerte tp laduoveetialeddgtestesadacecd 98 Remove the fuser assembly 5 of 6 98 Remove the fuser assembly 6 of 6 99 Remove the paper pickup assembly 1 of 4 100 Remove the paper pickup assembly 2 of 4 101 Remove the paper pickup assembly 3 of 4 101 Remove the paper pickup assembly 4 of 4 102 Remove the drive gear assembly and drive belt 1 of 4 103 Remove the drive gear assembly and drive belt 2 of 4 103 Remov
26. 96 2 Release one tab callout 1 Rotate the paper pickup drive shaft locking clip until the clip retainers align Figure 5 80 Remove the paper pick with the holes in the chassis and then remove the clip 3 up assembly 1 of 4 gt 9 fe s Vege MIU T AH 100 Chapter 5 Removal and replacement ENWW 3 Disconnect two wire harnesses callout 2 J551 and J556 Figure 5 81 Remove the paper pickup assembly 2 of 4 eamm s Pj a E DIT 4 Remove six screws callout 3 Figure 5 82 Remove the paper pickup assembly 3 of 4 ENWW Product base 101 5 Separate the assembly from the chassis and then remove it Figure 5 83 Remove the paper pickup assembly 4 of 4 102 Chapter 5 Removal and replacement ENWW Drive gear assembly and drive belt 1 ENWW Release one tab callout 1 Rotate the paper pickup drive shaft locking clip until the clip retainers align with the holes in the chassis and then remove the clip Figure 5 84 Remove the drive gear as Aj ra sembly and drive belt 1 of 4 Carefully slip the drive belt off of the motor shaft callout 2 and then remove four screws callout 3 Figure 5 85 Remove the drive gear assembly and drive belt 2 of 4 Product base 103 3 Remove the drive gear assembly A CAUTION Not all of the gears and springs are captive when you remove the drive gear assembly Make sure tha
27. 96 internal components 38 laser scanner assembly replace 89 main motor replace 93 operation sequence 34 paper pickup assembly replace 100 power supply replace 82 print cartridge door remove 76 rear cover remove 77 scanner cushions installing 70 scanner support frame remove 86 sequence of operations 34 serial number locating 6 side covers remove 74 supplies life expectancies 24 transfer roller replace 73 tray remove 71 product base front cover remove 79 fuser cover remove 77 fuser replace 96 laser scanner assembly replace 89 main motor replace 93 118 119 ENWW paper pickup assembly replace 100 power supply replace 82 print cartridge door remove 76 rear cover remove 77 scanner cushions installing 70 scanner support frame remove 86 side covers remove 74 transfer roller replace 73 tray remove 71 Q quality archive print setting 138 cleaning page printing 138 copy troubleshooting 127 print settings 118 print troubleshooting 119 repetitive image defects 140 scans troubleshooting 124 126 118 R rear cover remove 77 recycling HP printing supplies returns and environmental program 191 regulatory information 190 remove control panel 58 control panel overlay 57 formatter 81 front cover 79 fuser 96 fuser cover 77 laser scanner assembly 89 link assemblies 53 main motor 93 media inputtray 71 order of 52 paper pickup assembly 100 parts 48 52 power supply 82 prin
28. Doe RR E A ERR MEE enter ae 108 Alert and warning messages ssssssssseeeenm eee nennen nenne nennen 108 Alert and warning message tables ne 108 Critical error messages ssssssssseseeeneeeeeen eene nennen inen nre n ener enne 109 Critical error message tables ssssssssssseeeeeenenn 109 ipM Q 111 CAUSES OF JAMS e 111 Where to look for Jams i critt deett ctc ode dioe dence dd cepta dde 112 Clear jams from the input tray areas ssssssssssennnneeeeeennenennnn nnns 112 Clear jams from the output bin 115 Clear jams from the print cartridge area sssss em 116 Avoid repeated Jams 2 eric Leti de deae recae bruce sauer deg age EENEN AEA Aa 117 Print problems D 118 Print quality problems irr rer eterne Ere eH e Hen rax ee re FR nier 118 Improve print quality ss 118 Print quality settinigs urere denn enne ERU 118 Identify and correct print defects sssssee na 119 Print quality checklist sssssseenn e 119 General print quality issues 120 Scan Problems stresse VERRE ER NE RN e AX Ea a aaia a shied CER a ed edu dansant ET tente rennes 124 Solve scanned image problems 4444444 124 Scan quality problems ss 126 Prevent problems dee m 126 Solve scan quality problems cccccceeeeeeee
29. ENWW Product walkaround Front view 1 Scanner lid 2 Control panel 3 Print cartridge door latch 4 Output bin 5 Priority input tray 6 Tray 1 Back view T Interface ports 8 Power switch 9 Power connector ENWW Product walkaround 5 Interface ports All models have a Hi Speed USB 2 0 port and network models also have a 10 100 Base T Ethernet port 1 Hi Speed USB 2 0 port 2 Ethernet port network models only Serial number and model number location The serial number and product model number label is on the rear of the product 6 Chapter 1 Product information ENWW Software description Supported operating systems The product supports the following operating systems Full software installation Print and scan drivers only e Windows XP 32 bit e Windows XP 64 bit e Windows Vista 32 bit e Windows Vista 64 bit e Windows 2000 e Windows 2003 Server 64 bit e Windows 2003 Server 32 bit e Mac OS X v10 3 v10 4 and later amp NOTE For Mac OS X v10 4 and later PPC and Intel Core Processor Macs are supported Supported printer drivers The product comes with software for Windows and Macintosh that allows the computer to communicate with the product This software is called a printer driver Printer drivers provide access to product features such as printing on custom sized paper resizing documents and inse
30. HP products will be uninterrupted or error free If HP is unable within a reasonable time to repair or replace any product to a condition as warranted you will be entitled to a refund of the purchase price upon prompt return of the product HP products may contain remanufactured parts equivalent to new in performance or may have been subject to incidental use Warranty does not apply to defects resulting from a improper or inadequate maintenance or calibration b software interfacing parts or supplies not supplied by HP c unauthorized modification or misuse d operation outside of the published environmental specifications for the product or e improper site preparation or maintenance TO THE EXTENT ALLOWED BY LOCAL LAW THE ABOVE WARRANTIES ARE EXCLUSIVE AND NO OTHER WARRANTY OR CONDITION WHETHER WRITTEN OR ORAL IS EXPRESSED OR IMPLIED AND HP SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE Some countries regions states or provinces do not allow limitations on the duration of an implied warranty so the above limitation or exclusion might not apply to you This warranty gives you specific legal rights and you might also have other rights that vary from country region to country region state to state or province to province HP s limited warranty is valid in any country region or locality where HP has a support presence for this product and w
31. Kazakh KK CB537 00034 Control panel overlay Bulgarian BG CB537 00035 Control panel overlays 157 Table 7 3 Control panel overlays HP LaserJet M1120 continued Item Language Part number Control panel overlay Ukranian UK CB537 00036 Control panel overlay Serbian SR CB537 00037 Control panel overlay Lithuanian LT CB537 00038 Control panel overlay Estonian ET CB537 00039 Control panel overlay Latvian LV CB537 00040 Table 7 4 Control panel overlays HP LaserJet M1120n Item Language Part number Control panel overlay English EN CC459 00003 Control panel overlay Spanish ES CC459 00004 Control panel overlay Portuguese PT CC459 00005 Control panel overlay German DE CC459 00006 Control panel overlay French FR CC459 00007 Control panel overlay Dutch NL CC459 00008 Control panel overlay Italian IT CC459 00009 Control panel overlay Swedish SV CC459 00010 Control panel overlay Norwegian NO CC459 00011 Control panel overlay Finnish FI CC459 00012 Control panel overlay Danish DA CC459 00013 Control panel overlay Russian RU CC459 00014 Control panel overlay Czech CS CC459 00015 Control panel overlay Hungarian HU CC459 00016 Control panel overlay Polish PL CC459 0001
32. There are two categories of CSR parts 1 Parts for which customer self repair is mandatory If you request HP to replace these parts you will be charged for the travel and labor costs of this service 2 Parts for which customer self repair is optional These parts are also designed for Customer Self Repair If however you require that HP replace them for you this may be done at no additional charge under the type of warranty service designated for your product Based on availability and where geography permits CSR parts will be shipped for next business day delivery Same day or four hour delivery may be offered at an additional charge where geography permits If assistance is required you can call the HP Technical Support Center and a technician will help you over the phone HP specifies in the materials shipped with a replacement CSR part whether a defective part must be returned to HP In cases where it is required to return the defective part to HP you must ship the defective part back to HP within a defined period of time normally five 5 business days The defective part must be returned with the associated documentation in the provided shipping material Failure to return the defective part may result in HP billing you for the replacement With a customer self repair HP will pay all shipping and part return costs and determine the courier carrier to be used 182 Appendix A Service and support ENWW Print cartridge limited warranty stat
33. Turn the product power on and wait for the message Ready to appear on the control panel display 2 Rapidly open and then close the print cartridge door five times A CAUTION Do not forcibly close the door to prevent damaging the door latches XX TIP Depress and hold down the print cartridge door button to prevent the door latches from engaging Open the door far enough to activate the door open sensor and then fully close the door rapidly five times 3 An engine test page prints Drum rotation test The photosensitive drum located in the print cartridge must rotate in order for the print process to work The photosensitive drum receives its drive from the main drive assembly amp NOTE This test is especially important if refilled print cartridges have been used 1 Open the print cartridge door 2 Remove the print cartridge 3 Mark the drive gear on the cartridge with a felt tipped marker Note the position of the mark 4 Install the print cartridge and close the print cartridge door The startup sequence should rotate the drum enough to move the mark 5 Open the print cartridge door and inspect the gear that was marked in step 3 Verify that the mark moved If the mark did not move inspect the main drive assembly to make sure that it is meshing with the print cartridge gears If the drive gears appear functional and the drum does not move replace the print cartridge ENWW Functional checks 131 H
34. and print media sizes Size Dimensions Priority input tray Tray 1 Letter 216 x 279 mm 8 5 x 11 in Legal 216 x 356 mm 8 5 x 14 in A4 210 x 297 mm 8 27 x 11 69 in Executive 184 x 267 mm 7 24 x 10 51 in A3 297 x 420 mm 11 69 x 16 54 in AS 148 x 210 mm 5 83 x 8 27 in A6 105 x 148 mm 4 13 x 5 83 in B5 JIS 182 x 257 mm 7 17 x 10 12 in 16k 197 x 273 mm 7 75 x 10 75 in 16k 195 x 270 mm 7 7 x 10 6 in 16k 184 x 260 mm 7 25 x 10 25 in 8 5 x 13 216 x 330 mm 8 5 x 13 in 4x6 5 x 8 10x 15 cm Custom 107 x 152 mm 4 x 6 in 127 x 203 mm 5 x 8 in 100 x 150 mm 3 9 x 5 9 in Priority input tray Minimum 76 x 127 mm 3 x 5 in Maximum 216 x 356 mm 8 5 x 14 in NN NS NI NI NN NN NN NN NI NN 1 These sizes are supported as custom sizes Table 1 3 Supported envelopes and postcards Size Dimensions Priority input tray Tray 1 Envelope 10 105 x 241 mm 4 13 x 9 49 in v Envelope DL 110 x 220 mm 4 33 x 8 66 in v v v 12 Chapter 1 Product information Table 1 3 Supported envelopes and postcards continued Size Dimensions Priority input tray j 5 lt Envelope C5 162 x 229 mm 6 93 x 9 84 in Envelope B5 176 x 250 mm 6 7 x 9 8 in Envelope Monarch 98 x 191 mm 3 9 x 7 5 in Postcard 100 x 148 mm 3 94 x 5 83 in
35. control panel menus and available settings 1 On the product control panel press Setup 2 Use the arrow buttons to select Reports and then press OK 3 Use the arrow buttons to select Menu structure and then press OK ENWW Problem solving tools 137 Service menu Use the control panel Service menu to solve product problems In the table below an asterisk denotes the default setting Service menu item Submenu option Description Restore defaults None Press OK to restore the product factory settings Cleaning mode None Press OK to start the cleaning process See Clean the paper path on page 29 for more information Archive print Off The archive print feature produces output that is less susceptible to toner On smearing and dusting Use archive print to create documents that you want to preserve or archive Less paper curl Off Lowers the fuser temperature Restore the factory set defaults Restoring the factory set defaults returns all of the settings to the factory defaults 1 2 3 On the product control panel press Setup Use the arrow buttons to select Service and then press OK Use the arrow buttons to select Restore defaults and then press OK The product automatically restarts Clean the paper path The product features a special cleaning mode to clean the paper path 1 2 On the product control panel press Setup Use the arrow buttons to select Service an
36. documents the removal and replacement of field replaceable units FRUs only Replacing FRUs is generally the reverse of removal Occasionally notes and tips are included to provide directions for difficult or critical replacement procedures HP does not support the repairing of individual subassemblies or troubleshooting at the component level Note the length diameter color type and location of each screw Be sure to return each screw to its original location during reassembly Incorrectly routed or loose wire harnesses can interfere with other internal components and can become damaged or broken Frayed or pinched harness wires can be difficult to locate When replacing wire harnesses always use the provided wire loops lance points or wire harness guides Removal and replacement warnings cautions notes and tips A WARNING Turn the product off wait 5 seconds and then remove the power cord before attempting to service the product If this warning is not followed severe injury can result as well as damage to the product The power must be on for certain functional checks during problem solving However the power supply should be disconnected during parts removal Never operate or service the product with the protective cover removed from the laser scanner assembly The invisible reflected beam can damage your eyes Sheet metal and plastic edges in the product can be sharp Use caution when servicing this product A CAUTION
37. harnesses to remove the required harness from the retainer the fuser 2 of 6 4 Release the wire harness from the retainer near the top of the fuser callout 5 and disconnect the ground wire callout 6 from the back of the product Figure 5 76 Remove the fuser 3 of 6 P MUI c ENWW Product base 97 5 Release one tab callout 7 and then remove the wire harness retainer callout 8 Figure 5 77 Remove the fuser 4 of 6 7 f el 6 Remove three screws callout 9 Figure 5 78 Remove the fuser assembly 5 of 6 P 98 Chapter5 Removal and replacement ENWW 7 Lift up the right side of the fuser assembly to release it from the chassis and then remove the fuser assembly Figure 5 79 Remove the fuser assembly 6 of 6 oot NOTE When replacing the fuser assembly be sure to transfer the delivery sensor PCA from the old fuser to the new one ENWW Product base 99 Paper pickup assembly 1 Remove the following assemblies Separation pad See Separation pad on page 66 Scanner assembly See Scanner assembly on page 60 Transfer roller See Transfer roller on page 73 Right and left cover See Side covers on page 74 Print cartridge door See Print cartridge door on page 76 Rear cover and fuser cover See Rear cover and fuser cover on page 77 Front cover See Front cover on page 79 Formatter See Formatter on page 81 Fuser See Fuser on page
38. included Item Description 1 HP LaserJet M1120 MFP 2 Print cartridge 3 Control panel faceplate if not already installed 4 Output bin extension 5 Start guide and support flyer 6 CD ROMs software and online user guide 7 Power cord 8 Tray 1 18 Chapter2 Installation ENWW Install input devices Priority input tray The priority input tray is accessed from the front of the product The product prints from the priority input tray before attempting to print from tray 1 Media guides ensure that the media is correctly fed into the product and that the print is not skewed crooked on the media When loading media adjust the media guides to match the width of the media that you are using ENWW Install input devices 19 Tray 1 1 Push tray 1 into the product 2 Open the tray cover and then adjust the media guides out 3 Load the paper in the tray snug the media guides against the stack and then close the tray cover 20 Chapter2 Installation ENWW Install supplies Install the print cartridge 1 Open the print cartridge door 3 Remove the orange cover from the print cartridge and then pull the orange tab straight out to remove the sealing tape ENWW Install supplies 21 4 Insert the cartridge into the product until it is firmly in place 5 Close the print cartridge door 22 Chapter2 Installation ENWW 3 Maintenance e Manage suppl
39. inner fiers eee 58 6 Problem solve ENWW SCanner asSemMbIV estes detect ee ne Me aa ne le aie x naine 60 Product base M aa aaia 65 Print cartridg 58888 UE 65 Is T erzielen 66 Pickup Toller er de ta eaa RR OR TREE TRIS 67 Scanner CUSIMIONS ciego rec knee re e ER aE ire menant te ERR XXE RE Ee ex Ld eque SA E REOR an ER EAR RR diet GAAR 70 Media input tray iii 71 Transfer roller e etre rd erre ra Fer urn d ae e EU HH nan LER ERAN ER RE KEEEE FLA e tent e 73 SITBCOVETS 28m 74 Print Cartridge COOP ER 76 Rear cover and fuser COV6F te edet ue ex eed RR Ra LAN ERE E edu NN RENE a a ea adaa 77 FROME COVER ec angandenancaneteceaaadede danaaedandenhvaaqususnaubacdeddaetandcdesaaaiuaaydesdgendueeses canst 79 EODD TM HE aa aa aeaa 81 POWer SUDPIV ce 82 Scanner support frame eere n iei oa nnd Lace x e RR Rau ute due Ren d Rud este a 86 Laser scanner assembly et ertt icd nectit a du e Rage vere RE oe Puta alode 89 Main MOTOT EEUU 93 US OM ae 96 Paper pickup assembly entrer can pine a a EU ere eU eR exor ager eter elec trente ete 100 Drive gear assembly and drive belt ssssssssssseenneemeenennns 103 Problem Solving checklist 122 tar e te e ER Aa rae le nent be eR deo ore bones 106 Control panel messages 1 nni deret ee i e RR
40. is selected Select the proper driver There is a port driver problem in Microsoft Windows Uninstall and then reinstall the product software Verify that you are using the correct installation procedure and the correct port setting 106 Chapter 6 Problem solve ENWW Step Verification step Possible problems Solutions number 6 Does the product scantothe The cable is not connected correctly Reconnect the cable computer Software is not installed correctly or an error Uninstall and then reinstall the product Initiate a scan from the basic occurred during software installation software Verify that you are using the desktop software at your correct installation procedure and the computer correct port setting If the error persists turn off the product and then turn on the product qg u MH W UE P HM H HH Rp ENWW Problem solving checklist 107 Control panel messages The majority of the control panel messages are intended to guide the user through typical operation The control panel messages indicate the status of the current operation and include a page count on the second line of the display if appropriate When the product is receiving print data or scanning commands
41. like it usually does for example the pull tab or the box is different In the United States call toll free 1 877 219 3183 Outside the United States you can call collect Dial the operator and ask to place a collect call to this telephone number 1 770 263 4745 If you do not speak English a representative at the HP fraud hotline who speaks your language will assist you Or if someone who speaks your language is not available a language line interpreter will connect approximately one minute after the beginning of the call The language line interpreter is a service that will translate between you and the representative for the HP fraud hotline Manage supplies 27 Clean the product Clean the exterior Use a soft damp lint free cloth to wipe dust smudges and stains off of the exterior of the product Clean the flatbed scanner glass Dirty glass from fingerprints smudges hair and so on slows down performance and affects the accuracy of special features such as fit to page and copy 1 Turn off the product unplug the power cord from the electrical outlet and raise the scanner cover 2 Clean the glass by using a soft cloth or sponge that has been moistened with nonabrasive glass cleaner A CAUTION Do not use abrasives acetone benzene ammonia ethyl alcohol or carbon tetrachloride on any part of the product these can damage the product Do not place liquids directly on the glass They might seep under it and damag
42. ppnas d apparaten r i funktion uts ttas anv ndaren f r osynlig laserstr lning Betrakta ej str len Tiedot laitteessa k ytett v n laserdiodin s teilyominaisuuksista Aallonpituus 775 795 nm Teho 5 m W Luokan 3B laser Substances table China RHE E HERS mi REE SR BA SK HH Table C 1 d EE X BEA MR HERB EUR SUUS 4 Pb sk Hg Cd Tires Cr V SARA PBB SRE PBDE TENS X O X X O O amp EMALA E X O O o O O IE O O O O O O BAAR 0 O O O O O itat X O O 0 O O WE X o o O e o 196 Appendix C Regulatory information ENWW O RTREL ARAM AR AMA T L SRE Em ET SJ T11363 2006 AREZ o XXn ESAE TRI A IOS TP BD HH EAA ARE EME SJT11363 2006 HBR FER Ef NOTE SIAR A ARTERIHRBUR ERRE EA SERIE IE A UE ER E FH 77 RTS TE ENWW Safety statements 197 198 Appendix C Regulatory information ENWW Index Symbols Numerics 600 dpi print quality setting 118 A accessibility features 4 accessories part numbers 152 acoustic emissions 187 advanced software installation 8 after service checklist 50 alert messages 108 archive print setting 138 assemblies high voltage connector cleaning 134 partnumbers 166 B background shading troubleshooting 121 bands and streaks troubleshooting 120 batteries included 192 before service checklist 49 bin output capacity 4 jams clearing 115 locating 5 blank copies troubleshooting 130 blank scans troubleshooting 126 box unpa
43. see Drum rotation test on page 131 Perform a high voltage power supply check See Heating element check on page 133 132 Chapter 6 Problem solve ENWW Heating element check Media passes between the heating element and a soft pressure roller to fuse toner to the media 1 2 3 ET 5 Unplug the product for at least ten minutes Verify that the thermistor connector is seated into both the product chassis and the ECU Remove the heating element connector from the ECU To measure the continuity of the heating element measure the resistance between the two pins at the end of the cable NOTE Normal resistance is 25 ohms 10 ohms for the 110 V product and 80 ohms 20 ohms for the 220 V product If no resistance is measured replace the fuser Remove the thermistor connector and then measure the resistance between J206 pins one and two and between J206 pins three and four NOTE Normal resistance between both pairs of pins is 370K ohms 50K ohms at 20 C 68 F If no resistance is measured replace the fuser High voltage contacts check The high voltage contacts in the product must have a good connection with the contacts on the print cartridge to provide the necessary voltages for the electrophotographic processes Check the print cartridge contacts Remove the print cartridge and visually inspect the three connection points on the ends of the print cartridge drum ground callout 1 charg
44. ss 186 Environmental Specification terne denda dex ene uade ru da de Rd deu di 187 ACOUSTIC MISSIONS e EET 187 BERE honneur med E Cini ga ented nid 196 ix ENWW List of figures Figure 4 1 Figure 4 2 Figure 4 3 Figure 4 4 Figure 4 5 Figure 4 6 Figure 4 7 Figure 4 8 Figure 4 9 Figure 4 10 Figure 4 11 Figure 4 12 Figure 4 13 Figure 4 14 Figure 4 15 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 5 6 Figure 5 7 Figure 5 8 Figure 5 9 Figure 5 10 Figure 5 11 Figure 5 12 Figure 5 13 Figure 5 14 Figure 5 15 Figure 5 16 Figure 5 17 Figure 5 18 Figure 5 19 Figure 5 20 Figure 5 21 Figure 5 22 Figure 5 23 Figure 5 24 ENWW SYSTEM block diagrami issus sienne cisel antenne Ex dee ub dde 34 Optical System 1 0 2 Jine tenth aen ee eee ee E Aad Pe cd aee 36 Op cal system PAPA 37 Cross section of printer sise 38 Engine control System 222 aia e odi ace Mise tette dudes e dude antenne entierement dba ded 39 Engine control system circuit diagram ss 40 Laser scanner SyStelri liec etd anti hante dc dee D deze e ren para ee M de 41 Pickup feed delivery System cotone e E ARTETA ree FR te danses 42 Image forimation system Lee ceca etx ta ee eue Ea Ee e eua ER E Ve ea EAR e e eaa RR HR eR eB a elec een diet c nnd 43 Primary charging IEEE 43 DGVGlIOPING PERRET TTE 44 TONS E enen a de E E E T ET 45 sfr HUM EE 45 Hip
45. that is intended for laser printers 122 Chapter6 Problem solve ENWW ENWW Problem Example Cause Solution The printed page contains wrinkles or creases AaBoCc AaBbCc AaBbCc AaBoCc AaBbCc The media might be loaded incorrectly or the input tray might be too full Turn over the stack of paper in the input tray or try rotating the paper 180 in the input tray Verify that the media is loaded correctly and that the media guides are not too tight or too loose against the stack See Install input devices on page 19 The media might not meet HP specifications Use a different paper such as high quality paper that is intended for laser printers Air pockets inside envelopes can cause them to wrinkle Remove the envelope flatten it and try printing again Toner appears around the printed characters The media might be loaded incorrectly Turn over the stack of paper in the tray If large amounts of toner have scattered around the characters the paper might have high resistivity Use a different paper such as high quality paper that is intended for laser printers An image that appears at the top of the page in solid black repeats farther down the page in a gray field Software settings might affect image printing In your software program change the tone darkness of the field in which the repeated image appears
46. the error persists contact HP See www hp com support LJM1120 or the support flyer that came in the product box 50 3 Fuser Error The product has experienced an internal Turn off the power by using the power switch hardware error wait at least 30 seconds and then turn on the Turn off then on power and wait for the product to initialize If a surge protector is being used remove it Plug the product directly into the wall socket Use the power switch to turn the product on If the error persists contact HP See www hp com support LJM1120 or the support flyer that came in the product box 50 8 Fuser Error The product has experienced an internal Turn off the power by using the power switch hardware error wait at least 30 seconds and then turn on the Turn off then on power and wait for the product to initialize If a surge protector is being used remove it Plug the product directly into the wall socket Use the power switch to turn the product on If the error persists contact HP See www hp com support LJM1120 or the support flyer that came in the product box 50 9 Fuser Error The product has experienced an internal Turn off the power by using the power switch hardware error wait at least 30 seconds and then turn on the Turn off then on power and wait for the product to initialize ENWW Control panel messages 109 Control panel message Description Recommended action 52 Scanner Error
47. the wire harness is located toward the top of the motor so that the harness can be correctly positioned in the retainers on the motor PCA mounting bracket When you reinstall the main motor drive belt make sure that it is correctly positioned on top of the spring loaded tension idler and that it is not twisted the grooves in the belt should face inwards when the belt is correctly positioned Make sure that the FFC that is attached to the motor PCA is correctly positioned under the lower motor mounting bracket so that it will not interfere with the fan blade on the rear of the motor shaft Product base 95 Fuser 1 Remove the following assemblies e Scanner assembly See Scanner assembly on page 60 e Right and left covers See Side covers on page 74 e Print cartridge door See Print cartridge door on page 76 e Rearcover and fuser cover See Rear cover and fuser cover on page 77 e Front cover See Front cover on page 79 e Formatter See Formatter on page 81 e Scanner support frame and chassis reinforcement plate See Scanner support frame on page 86 2 Remove six screws callout 1 and the power supply sheet metal plate callout 2 Figure 5 74 Remove the fuser 1 of 6 96 Chapter 5 Removal and replacement ENWW 3 Disconnect two wire harness connectors callout 3 J102 and J552 and remove the harnesses from the retainer callout 4 NOTE You might need to disconnect and remove the other wire
48. to remove jams Damage caused by sharp objects will not be covered by the warranty When removing jammed media pull the jammed media straight away from the product Pulling jammed media out of the product at an angle can damage the product Open the print cartridge door and remove the print cartridge 1 u NS RER PV NE in ms el 7 G A CAUTION To prevent damage to the print cartridge minimize its exposure to direct light 2 With both hands grasp the side of the jammed media that is most visible this includes the middle and carefully pull it free from the product 3 116 Chapter 6 Problem solve ENWW Avoid repeated jams ENWW Verify that the input tray is not overfilled The input tray capacity varies depending on the type of print media that you are using Verify that the media guides are properly adjusted Check that the input tray is securely in place Do not add print media into the input tray while the product is printing Use only HP recommended media types and sizes Do not fan media prior to loading it in a tray To loosen the ream hold it firmly in both hands and twist the media by rotating your hands in the opposite direction Do not let print media stack up in the output bin The print media type and the amount of toner used affect the output bin capacity Check the power connection Make sure that the power cord is firmly connected to both the p
49. tray contains clean unmarked paper Attach the power cord and interface cable and then turn on the product Verify that the expected start up sounds occur Print a configuration page and then verify that the expected printing sounds occur Print a demo page and then verify that the print quality is as expected Send a print job from the host computer and then verify that the output meets expectations If necessary restore any customer product settings Clean the outside of the product with a damp cloth Test 2 copy quality test ENWW 1 o NN 9 aS ww p Verify that you have completed the necessary reassembly steps Ensure that the input tray contains clean unmarked paper Attach the power cord and interface cable and then turn on the product Verify that the expected start up sounds occur Print a configuration page and then verify that the expected printing sounds occur Place the configuration page on the scanner glass Print a copy job and then verify the results Clean the outside of the product with a damp cloth Removal and replacement strategy 51 Parts removal order Use the following diagrams to determine which parts of the product must be removed before servicing Gf NOTE The scanner assembly might be contaminated if it is opened outside of a cleanroom environment For this reason the entire scanner assembly is replaceable only as a unit Replacing the scanner assembly as an entire assembly repl
50. 0 Western Scanner assemblies on page 165 CB537 60110 Control panel assembly LJm1120 Asian Scanner assemblies on page 165 CB537 67901 SSA PKG FGI ASSY LJm1120 scanner flatbed assembly Scanner assemblies on page 165 CC390 60001 Formatter standard HP LaserJet M1120 Assemblies on page 167 CC427 60001 Formatter standard HP LaserJet M1120n Assemblies on page 167 CC539 60001 Formatter Asian HP LaserJet M1120 Assemblies on page 167 CC540 60001 Formatter Asian HP LaserJet M1120n Assemblies on page 167 RC1 2476 000CN Cushion scanner External covers and panels on page 169 RC1 2498 000CN Latch left Internal components 2 of 3 on page 173 RC1 2499 000CN Latch right Internal components 2 of 3 on page 173 RC2 2960 000CN Cover cartridge External covers and panels on page 169 RC2 2965 000CN Link coupling Internal components 1 of 3 on page 171 RC2 2971 000CN Cover rear External covers and panels on page 169 RC2 2979 000CN Tray guide left Internal components 3 of 3 on page 175 RC2 2980 000CN Tray guide right Internal components 3 of 3 on page 175 RL1 1497 000CN Roller pickup Internal components 2 of 3 on page 173 RL1 1732 000CN Cover top External covers and panels on page 169 RL1 1734 000CN Cover front External covers an
51. 17050 1 Manufacturer s Name Hewlett Packard Company DoC BOISB 0604 03 rel 1 0 Manufacturer s Address 11311 Chinden Boulevard Boise Idaho 83714 1021 USA declares that the product Product Name HP LaserJet M1120 Series Regulatory Model Number BOISB 0604 03 Product Options ALL Print Cartridges CB436A conforms to the following Product Specifications SAFETY IEC 60950 1 2001 EN60950 1 2001 A11 IEC 60825 1 1993 A1 A2 EN 60825 1 1994 A1 A2 Class 1 Laser LED Product GB4943 2001 EMC CISPR22 2005 EN55022 2006 Class B EN 61000 3 2 2000 A2 EN 61000 3 3 1995 A1 EN 55024 1998 A1 A2 FCC Title 47 CFR Part 15 Class B ICES 003 Issue 4 GB9254 1998 GB17625 1 2003 Supplementary Information The product herewith complies with the requirements of the EMC Directive 2004 108 EC and the Low Voltage Directive 2006 95 EC and carries the CE Marking C accordingly This Device complies with Part 15 of the FCC Rules Operation is subject to the following two Conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation 1 The product was tested in a typical configuration with Hewlett Packard Personal Computer Systems 2 For regulatory purposes this product is assigned a Regulatory model number This number should not be confused with the product name or the product number s Boise Idaho USA
52. 2 66 Chapter 5 Removal and replacement ENWW Pickup roller 1 Remove the print cartridge and locate the pickup roller See Print cartridge on page 65 Figure 5 27 Remove the pickup roller 1 of 5 2 Gently release the small white tabs on each side of the pickup roller by pushing them away from the roller and then rotate the roller away from the mounting frame A CAUTION Donottouch the black sponge transfer roller inside the product Touching the transfer roller can damage the product Use gentle pressure to release the small white tabs to avoid breaking them ENWW Product base 67 3 Gently pull the roller up and out of the product Figure 5 29 Remove the pickup roller 3 of 5 oe 4 Circular and rectangular pegs on each side of the pickup roller fit into corresponding slots on the pickup roller mounting frame and prevent the roller from being incorrectly installed Position the replacement pickup roller in the slots on the pickup roller frame Figure 5 30 Remove the pickup roller 4 of 5 a ti np 5 68 Chapter5 Removal and replacement ENWW 5 Rotate the top of the pickup roller into position until the white tabs on each side of the roller snap into place Figure 5 31 Remove the pickup roller 5 of 5 ENWW Product base 69 Scanner cushions 1 Open the print cartridge door 2 Place a scanner cushion in each well on the scanner support frame callout 1 Use the eraser end of a penc
53. 30 Figure 5 31 Figure 5 32 Figure 5 33 Figure 5 34 Figure 5 35 Figure 5 36 Figure 5 37 Figure 5 38 Figure 5 39 Figure 5 40 Figure 5 41 Figure 5 42 Figure 5 43 Figure 5 44 Figure 5 45 Figure 5 46 Figure 5 47 Figure 5 48 Figure 5 49 Figure 5 50 Figure 5 51 Figure 5 52 Figure 5 53 Figure 5 54 Figure 5 55 Figure 5 56 Figure 5 57 Figure 5 58 Figure 5 59 Figure 5 60 Figure 5 61 Figure 5 62 Figure 5 63 Figure 5 64 Figure 5 65 Figure 5 66 Figure 5 67 Figure 5 68 Figure 5 69 Figure 5 70 Figure 5 71 Figure 5 72 Figure 5 73 Figure 5 74 xii Remove the separation pad 1 of 2 iii 66 Remove the separation pad 2 Of 2 sise 66 Remove the pickup roller TO Si ieina e ertt o ERE TEE EE ER ai t cA 67 Remove the pickup roller 2 of 5 eee eene 67 Remove the pickup roller 3 of 5 eene nennen nennen nnns 68 Remove the pickup roller 4 of 5 nee dette eden Fu ER Re cia 68 Remove the pickup roller 5 of 5 eene nennen nennen nnns 69 Installing the scanner cushioris e onere trente cct ee smt nada dernier ane sna dues 70 Remove the media input tray 1 of 3 71 Remove the media input tray 2 of 3 71 Remove the media input tray 3 of 3 72 Remove the transter roll t 2 uiti tette ter trc nee e ur E ehe E e Ho to odeur 73 Remove the side covers 1 of 4 cc ce sceeedesseecteesngnsessaneensarssnenetesaeseeedetnassieaedeuassdecedanueaeenteneneste 74 Remove the side covers 2 of
54. 41002 eui amp u3 ler O1NO m 12 LINO lor 11 ZLNO 10 Wand Loan Gy viele cw o Loan Wand o zoan Josues zoaw ag wano uiag avo VOd e ug 10O ezit Arx 106Sd 4osues junoo 24P2 MTRPWM coer al jeuonejo JO OW urejA 24P2 10 AGC 2 coer 1a evsr zQ 11 Dan DEC 8 GND 4 ed WMA LW 10 rO osa sa o oov 9G us 2G zavz 8 Zdvz 6 Zape oQ ans A ans u Q Loer EIN 40 JOUI UIEW n linoeva zQ ano LzSr N 2 inoovi a avi 1G 1 NIOVL Lesr v9d Josuas eBed jo doy 8 2 uee fa pe SNSid lv De al pid SPEE Br 10sues eBed jo doy issr Heer tdver x o 8 ras piouajo
55. 5 F 4 to 104 F Relative humidity 1096 to 8096 1096 to 8096 95 or less 1 Values are subject to change Acoustic emissions ENWW Table B 5 Acoustic emissions Sound Power Level Declared per ISO 9296 Printing 19 ppm Livaa 6 6 Bels A 66 dB A Ready Inaudible Sound Pressure Level Bystander Position Declared per ISO 9296 Printing 19 ppm Loam 93 dB A Ready Inaudible 1 Values are based on preliminary data See www hp com support LJM 1120 for current information Configuration tested HP LaserJet M1120 printing simplex using A4 paper at 19 ppm Environmental specifications 187 188 Appendix B Specifications ENWW C Regulatory information This section contains the following regulatory information e FCC compliance e X Environmental product stewardship program e Declaration of conformity e Safety statements ENWW 189 FCC compliance This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy If it is not installed and used in accordance with the instructions it may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation
56. 7 Control panel overlay Slovak SK CC459 00018 Control panel overlay Turkish TR CC459 00019 Control panel overlay Greek EL CC459 00020 Control panel overlay Hebrew HE CC459 00021 Control panel overlay Arabic AR CC459 00022 Control panel overlay Traditional Chinese ZHTW CC459 00023 Control panel overlay Korean KO CC459 00024 Control panel overlay Simplified Chinese ZHCN CC459 00025 Control panel overlay Thai TH CC459 00026 Control panel overlay Vietnamese VI CC459 00027 Control panel overlay Catalan CA CC459 00028 158 Chapter 7 Parts ENWW Table 7 4 Control panel overlays HP LaserJet M1120n continued Item Control panel overlay Language Romanian RO Part number CC459 00029 Control panel overlay Croation HR CC459 00030 Control panel overlay Slovenian SL CC459 00031 Control panel overlay Indonesian ID CC459 00032 Control panel overlay Kazakh KK CC459 00033 Control panel overlay Bulgarian BG CC459 00034 Control panel overlay Ukranian UK CC459 00035 Control panel overlay Serbian SR CC459 00036 Control panel overlay Lithuanian LT CC459 00037 Control panel overlay Estonian ET CC459 00038 Control panel overlay Latvian LV CC459 00030 Control panel overlays 159
57. 87 non HP supplies HP policy 26 NVRAM initialization troubleshooting 135 Oo on off switch locating 5 online support 184 operating environment specifications 16 187 operating systems supported 7 operation sequence 34 operations engine control system 39 image formation system 43 laser scanner system 41 pickup feed delivery system 42 scanner 36 order of remove and replace parts 52 ordering supplies and accessories 152 output bin capacity 4 locating 5 output quality archive print setting 138 cleaning page printing 138 copy troubleshooting 127 print troubleshooting 118 119 repetitive image defects 140 scans troubleshooting 124 126 overlay control panel remove 57 Index 201 overlays control panel part numbers 157 P packaging device 184 pages skewed 122 pages per minute 4 paper curled troubleshooting 122 138 feeding operations 42 jams 111 pickup feed delivery system 42 supported sizes 12 supported types 13 wrinkled 123 paper jams detection operations pickup feed delivery system 42 paper path cleaning 138 paper pickup assembly remove 100 part numbers cables 152 control panel overlays 157 covers 168 documentation 160 internal components 170 scanner assemblies 164 screws 163 supplies 152 parts about remove and replace 48 order of removal 52 remove 52 PCAs diagrams 148 phone numbers HP fraud hotline 27 photos scanning troubleshooting 124 photosensitive drum rotation te
58. 926 AKC Hungary Hungarian localization CC459 67927 AKD Poland Polish localization CC459 67928 AB9 Portugal Portuguese localization CC459 67929 ACQ South Africa English CC459 67930 BCP Greece Israel Greek Hebrew localization CC459 67931 BFQ Mid East 220V AR FR EN localization CC459 67932 BFR Estonia Lithuania Latvia ET LT LV BFS Slovenia Croatia Serbia SL HR SR CC459 67933 CC459 67934 BFZ Kazakhstan Ukraine Kazakh Ukrainian localization CC459 67935 AB8 Turkey Turkish localization CC459 67936 BG1 Romania Bulgaria Romanian Bulgarian localization CC459 67937 Latin America AC8 Argentina Spanish CC459 67938 ABM Latin Amer 120v Spanish localization CC459 67939 696 Brazil Portuguese CC459 67940 North America 156 Chapter 7 Parts 697 Latin America Spanish localization AKV South America Spanish ABA U S English CC459 67941 CC459 67942 CC459 67943 ENWW Control panel overlays ENWW Table 7 3 Control panel overlays HP LaserJet M1120 Item Control panel overlay Language English EN Part number CB537 00003 Control panel overlay Spanish ES CB537 00004 Control panel overlay Control panel overlay Portuguese PT German DE CB537 00005 CB537 00006 Control panel overlay French FR CB537 00007 Control panel overlay
59. C ComMmpliANC sr 190 Environmental product stewardship program ss 190 Protecting the environment sise 190 OZONE production EET 190 Power consumption ii iiiiiisiesseeseeeeeeeeeeeeeeeeenienene 190 Toner consumprtlOh eee teure ner eere L6 rs eaa Rau teneur TR adel sive Arial a dettes 190 Papet US EM 190 rq aaa iOS Ea a DAEA 191 AP LaserJet print suppll8S cit ntn alaaa aa 191 Return and recycling instructions sssesrsiresssoerriii e ii rei ea R AAEE EATARRA 191 United States and Puerto Rico ss 191 Multiple returns two to eight cartridges ssseessssss 191 Single Feturris uoiicece tried etoeceu e a cauti be tet vd ze bo DE doce ev ele 191 Elect mI 191 Non US returns nere tee nr et D reu EE e ed nn arent 192 Paber MH 192 Material reStrictlOns 5 n rettet Rene Ene Re ea pete e Peau oe ee ea eoe ee RETE pH niet 192 Disposal of waste equipment by users in private households in the European Union 192 Material Safety Data Sheet MSDS issu 192 For more information seins 192 Declaratiori of COMPOMMILY eiui odere neat sped dance de cha Denke ne nine te sabe it anes eere ele nie 194 Safety statements xcci ece rte ine Ee p Due e rv dae uw dv e uade sa dde ev da Dco de euge dudes 195 Laser safely eat Die be doi e ee coit as ace a 195 Canadian DOC regulations sis 195 EMI statemen
60. E bk Ee ena eR E eee o BR EE RR ga BRA Eee 137 Demo page ED 137 DUCUNT 137 Service MENU 138 Restore the factory set defaults ssssss 138 Clean the paper pali ht ee ret ete tue aaa a 138 Archive Print tm Em 138 Problem solving dlagrams 2 ecc AA eee iuda Re et eu Ra be Doct EAEN 140 Repetitive image defects eoe correre dansante ner dre Rex run ees 140 Interface POMS roe eorr tenore Ea eee reet a Rye AEN UU ESTEE UN D UR RURRETET VE FEE QR teen nat 141 Formatter connectors see 142 ECU Eveniet EM 143 Solenoid and motor see 144 pell cime rp 145 Sensors xe ORE ERRARE EUR ERN RR ERE de Re E 146 Major COImpoRetts cerit eere a de er nae e ia ae nde 147 PCAS Dase Unlt sera aan nine nitrate ele 148 ei reo Me EE To FANN eee Em 149 Firmware update pe aaea aada 150 7 Parts Ordering information sise 152 S pplies and hinge TOO i ss cantees EE 152 Cable and interface accessories ccc cee cece cece eeeee cee eeeaeeaece eee eeeeeeeeeenecaecaaaeaaaaeaaeeaeeeeseeeeeeeeeeeeteees 152 Whole unit replacement iii 153 Control panel overlays trit tnde cerebro acte dre cde fec Exe ctt x e need dugilans 157 Supplementry documentation and support ss 160 Pants liStSand Cia QramMS aeneae aa Aa EAEE ARRA 162 TYDES Of SCIOWS E 163 Scanner aSS8mbIIeS 5 is545eessnucenerertenct
61. French German CC537 67924 BB1 Norway Finland Sweden NO FI SV localization CC537 67925 ABY Denmark Danish CC537 67926 ACB Russia Cyrillic CC537 67927 BCM Czech Rep Slovakia Czech Slovak localization CC537 67928 AKC Hungary Hungarian localization CC537 67929 AKD Poland Polish localization CC537 67930 AB9 Portugal Portuguese localization CC537 67931 ACQ South Africa English CC537 67932 BCP Greece Israel Greek Hebrew localization CC537 67933 BFQ Mid East 220V AR FR EN localization CC537 67934 BFR Estonia Lithuania Latvia ET LT LV BFS Slovenia Croatia Serbia SL HR SR CC537 67935 CC537 67936 BFZ Kazakhstan Ukraine Kazakh Ukrainian locization CC537 67937 AB8 Turkey Turkish localization CC537 67938 BG1 Romania Bulgaria Romanian Bulgarian locization CC537 67939 Latin America AC8 Argentina Spanish CC537 67940 ABM Latin Amer 120v Spanish localization CC537 67941 696 Brazil Portuguese CC537 67942 North America 154 Chapter7 Parts 697 Latin America Spanish localization AKV South America Spanish ABA U S English CC537 67943 CC537 67944 CC537 67945 ENWW ENWW Country region Asia Pacific Table 7 2 Whole unit replacement product bundle CC459A Localized configuration ABO Taiwan Traditional Chinese Replacement part number
62. HP LaserJet M1120 MFP Series Service Manual aN LE NI NN 7 ER ES ST HP LaserJet M1120 MFP Series Service Manual Copyright and License 2008 Copyright Hewlett Packard Development Company L P Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws The information contained herein is subject to change without notice The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein Edition 1 1 2008 Part number CB537 90945 Trademark Credits Adobe Acrobat and PostScript are trademarks of Adobe Systems Incorporated Microsoft Windows and Windows NT are U S registered trademarks of Microsoft Corporation UNIX is a registered trademark of The Open Group Table of contents 1 Product information Quick access to product information scssi riai a a i e a EEEE AEE 2 Product COMPANISON sr ertet eigen paene dude pee aa aaa RR ka NOR deca ERR Ea 3 Product features ge M 4 Product walkaround 51 ete tenete c Pen beg eue eun co IR tudo xe d du axe ACER Ra ax dua 5 FROME VOW TE 5 Back VICW qm 5 Interface ports
63. Remove the rear cover and fuser cover 2 of 3 D a gt S ENWW Product base 77 4 Rotate the bottom of the fuser cover away from the product and then remove the fuser cover Figure 5 45 Remove the rear cover and fuser cover 3 of 3 78 Chapter 5 Removal and replacement ENWW Front cover 1 Remove the right side and left side covers See Side covers on page 74 2 Release the lower left side front cover locking tab and slightly pry the lower left corner of the front cover away from the product Figure 5 46 Remove the front cover 1 of 4 3 Release the lower right side front cover locking tab located near the corner of the power supply and slightly pry the lower right corner of the front cover away from the product Figure 5 47 Remove the front cover 2 of 4 e ENWW Product base 79 4 Rotate the bottom of the front cover away from the product to release it Figure 5 48 Remove the front cover 3 of 4 5 Remove the front cover Figure 5 49 Remove the front cover 4 of 4 80 Chapter 5 Removal and replacement ENWW Formatter A CAUTION The formatter is an ESD sensitive device 1 Remove the left cover See Side covers on page 74 2 Disconnect all FFCs and wire harnesses from the formatter A CAUTION Do not bend or fold the FFCs during the removal or reinstallation process NOTE The scanner assembly is shown removed in this procedure If the scanner assembly is instal
64. Turn off then on The product has experienced a scanner error If a surge protector is being used remove it Plug the product directly into the wall socket Use the power switch to turn the product on If the error persists contact HP See www hp com support LJM1 120 or the support flyer that came in the product box Turn off the power by using the power switch wait at least 30 seconds and then turn on the power and wait for the product to initialize If a surge protector is being used remove it Plug the product directly into the wall socket Use the power switch to turn the product on If the error persists contact HP See www hp com support LJM1 120 or the support flyer that came in the product box 54 1C Error Turn off then on The product has experienced an internal hardware error Turn off the power by using the power switch wait at least 30 seconds and then turn on the power and wait for the product to initialize If a surge protector is being used remove it Plug the product directly into the wall socket Use the power switch to turn the product on If the error persists contact HP See www hp com support LJM1 120 or the support flyer that came in the product box Engine comm Error The product has experienced an internal hardware error 1 Turn off the power by using the power switch and then wait at least 30 seconds 2 fa surge protector is being used remove it Plug the
65. aces the scan module the scan motor and the cable Figure 5 2 Parts removal order Flatbed lid Flatbed lid white plate Link assemblies and scanner support frame springs Control panel overlay Cd assembly Print cartridge Transfer roller Media input tray Printer side covers Rear cover and fuser cover pwer supply Scanner assembly picai door Front cover Scanner support frame Engine controller unit EE assembly Main motor Fuser assembly Pickup assembly Front cover Formatter 52 Chapter 5 Removal and replacement ENWW Scanner assembly NOTE Your product might not appear exactly as the one shown in the photos in this chapter For example the color of the external panels and covers might be different than your product However this does not affect the validity of the procedures in this chapter Link assemblies and scanner support frame spring 1 Push the print cartridge access button and raise the scanner assembly until it is locked open 2 Usea small flat blade screwdriver to release the link tabs on each link assembly A WARNING When the link assemblies are disengaged the scanner assembly can easily fall off of the product base if it is rotated too far towards the back of the product A CAUTION Do not push too hard on the link tabs or the tabs might break Figure 5 3 Remove the link assemblies and scanner support frame spring 1 of 4 ENWW Scanner assembly 53 3 Rotate a link as
66. alf self test functional check The print process can be subdivided into the following stages Image formation stage charges the drum and writes a latent image to the drum with the laser Development stage forms a toner image on the drum Transfer stage transfers the image to the media Cleaning stage removes excess toner from the drum Fusing stage applies heat and pressure to the media to make the image permanent Perform a half self test check The purpose of the half self test check is to determine which process is malfunctioning 1 2 Print a configuration page Open the print cartridge access door after the paper advances halfway through the product approximately five seconds after the motor begins rotating The leading edge of the paper should have advanced past the print cartridge Remove the print cartridge Open the print cartridge drum shield to view the drum surface If a dark and distinct toner image is present on the drum surface assume that the first two functions of the electrophotographic process are functioning image formation and development Problem solve the failure as a transfer or fusing problem Perform other checks If no image appears on the photosensitive drum perform these checks 1 Make sure that you removed the entire length of the sealing tape from the print cartridge before you installed the cartridge Perform a drum rotation functional check to ensure that the drum is rotating
67. an the media size Adjust the paper length adjustment control to the correct length Copy problems 129 Performance problems Problem Cause Solution No copy came out The input tray might be empty Load media in the product See Install input devices on page 19 for more information The original might have been loaded incorrectly On the flatbed scanner place the original document face down with the upper left corner of the document at the corner of the glass indicated by the icon on the scanner Copies are blank The sealing tape might not have been removed from the print cartridge Remove the print cartridge from the product pull out the sealing tape and reinstall the print cartridge The original might have been loaded incorrectly On the flatbed scanner make sure that the original document is placed face down with the upper left corner of the document at the corner of the glass indicated by the icon on the scanner The media might not meet HP specifications Use media that meets HP specifications The print cartridge might be defective Replace the print cartridge See Print cartridge on page 25 Copies are reduced in size The product settings might be set to reduce the scanned image On the control panel press Reduce Enlarge and verify that it is set to Original 100 130 Chapter6 Problem solve ENWW Functional checks Engine test page 1
68. anner e a Product comparison 3 Product features 4 Print Prints letter size pages at speeds up to 20 ppm and A4 size pages at speeds up to 19 ppm Prints at 600 dots per inch dpi and FastRes 1200 dpi Includes adjustable settings to optimize print quality Copy Copies at 300 dots per inch dpi Memory Includes 32 MB RAM Paper handling Priority input tray holds up to 10 pages Tray 1 holds up to 250 sheets of print media or 10 envelopes Output bin holds up to 100 sheets of print media Scan Provides 1200 pixels per inch ppi full color scanning Printer driver features Interface connections FastRes 1200 produces 1200 dots per inch dpi print quality for fast high quality printing of business text and graphics All models include a Hi Speed USB 2 0 port Network models include a 10 100 Base T Ethernet network port Economical printing Provides N up printing printing more than one page on a sheet Provides an EconoMode setting which uses less toner Supplies Uses a print cartridge that has a no shake design The product ships with a 1 000 page average yield starter cartridge The average yield for replacement cartridges is 2 000 pages Accessibility Online user guide is compatible with text screen readers Print cartridges can be installed and removed by using one hand All doors and covers can be opened by using one hand Chapter 1 Product information
69. ar jams from the input tray areas A CAUTION Do not use sharp objects such as tweezers or needle nose pliers to remove jams Damage caused by sharp objects will not be covered by the warranty When removing jammed media pull the jammed media straight away from the product Pulling jammed media out of the product at an angle can damage the product Gf NOTE Depending on where the jam is located some of the following steps might not be necessary 1 Open the print cartridge door 2 112 Chapter 6 Problem solve ENWW 3 With both hands grasp the side of the media that is most visible this includes the middle and carefully pull it free from the product 5 With both hands grasp the side of the jammed media that is most visible this includes the middle and carefully pull it free from the product ENWW Clear jams 113 6 Replace the print cartridge and close the print cartridge door 114 Chapter6 Problem solve ENWW Clear jams from the output bin A CAUTION Do not use sharp objects such as tweezers or needle nose pliers to remove jams Damage caused by sharp objects will not be covered by the warranty With both hands grasp the side of the jammed media that is most visible this includes the middle and carefully pull it free from the product ENWW Clear jams 115 Clear jams from the print cartridge area A CAUTION Do not use sharp objects such as tweezers or needle nose pliers
70. ard Development Company L P www hp com CB537 90945 WWW S manuals com
71. art number for a specific product bundle and localized configuration Table 7 1 Whole unit replacement product bundle CC537A Country region Localized configuration Replacement part number ENWW Asia Pacific ABO Taiwan Traditional Chinese CC537 67902 AB1 Korea Korean localization CC537 67903 AB2 China Simplified Chinese CC537 67904 AB3 Thailand Thai CC537 67905 ABA Singapore English CC537 67906 BFV Hong Kong SAR English Traditional Chinese CC537 67907 ABG Australia English CC537 67909 A2K Philippines English CC537 67910 ACJ India English AK3 Indonesia Indonesia localizaton UUD Vietnam Vietnamese localization CC537 67911 CC537 67912 CC537 67913 ARR Asia Pacific Euro Cord English CC537 67914 ARS Asia Pacific UK Cord English CC537 67915 Whole unit replacement 153 Table 7 1 Whole unit replacement product bundle CC537A continued Country region Europe Middle East and Africa Localized configuration ABD Germany German ABF France French Replacement part number CC537 67916 CC537 67917 ABH Netherlands Dutch CC537 67918 ABZ Italy Italian CC537 67919 ABE Spain Spanish localization CC537 67920 BFY Spain Catalan localization CC537 67921 ABU United Kingdom English CC537 67922 B14 Belgium Dutch French CC537 67923 AR8 Switzerland
72. assembly A CAUTION The control panel is an ESD sensitive component 1 Remove the control panel overlay See Control panel overlay on page 57 2 Remove one screw callout 1 Figure 5 10 Remove the control panel assembly 1 of 3 3 Slide the control panel forward and slightly lift up the control panel Figure 5 11 Remove the control panel assembly 2 of 3 58 Chapter 5 Removal and replacement ENWW 4 Disconnect one FFC callout 2 Remove the control panel assembly A CAUTION Do not bend or fold the FFCs during the removal or reinstallation process Figure 5 12 Remove the control panel assembly 3 of 3 ENWW Scanner assembly 59 Scanner assembly A CAUTION Avoid touching the flatbed glass Skin oils and fingerprints can contaminate the glass or pad and cause print quality or paper pickup problems 1 Remove one screw callout 1 Figure 5 13 Remove the scanner assembly 1 of 10 SE lt 3 2 Release one tab on the back side of the cover Figure 5 14 Remove the scanner assembly 2 of 10 60 Chapter 5 Removal and replacement ENWW 3 Release the bottom tab callout 2 Figure 5 15 Remove the scanner assembly 3 of 10 4 Rotate the back side of the cover away from the product and then slide the cover toward the front of the product to remove it Figure 5 16 Remove the scanner assembly 4 of 10 iae 2 gt ENWW Scanner assembly 61 5 Push t
73. ck contents 18 C cables flat flexible remove parts 48 part numbers 152 USB and network not included 18 Canadian DOC regulations 195 ENWW capacity output bin 4 cartridge part number 152 cartridge door remove 76 cartridge door release locating 5 cartridges drum rotation test 131 high voltage contacts cleaning 133 HP fraud hotline 27 recycling 191 remove 65 replacing 25 status checking 24 storing 24 warranty 183 caution toner on clothing 26 characters troubleshooting 122 checklists after service 50 before service 49 print quality 119 checks engine test page 131 half self test 132 heating element 133 high voltage power supply 133 circuit diagram 149 cleaning exterior 28 flatbed scanner glass 28 glass 28 high voltage connection points 134 lid backing 28 paper path 29 scanner glass 28 cleaning page printing 138 component diagram 147 components internal locating 38 configuration page printing 30 connectors ECU 143 Formatter 142 contact image sensor CIS 36 control panel cleaning page printing 29 messages troubleshooting 108 overlay remove 57 overlays partnumbers 157 remove 58 secondary service menu 135 Service menu 138 copy quality troubleshooting 127 copy quality test 51 copying media troubleshooting 128 quality troubleshooting 127 size troubleshooting 130 troubleshooting 130 covers partnumbers 168 covers remove front 79 fuser 77 print cartridge 76 rear 77 side 74 creases t
74. control panel messages indicate this status In addition alert messages warning messages and critical error messages indicate situations that might require some action Alert and warning messages Alert and warning messages appear temporarily and might require the user to acknowledge the message by pressing OK to resume or by pressing Cancel to cancel the job With certain warnings the job might not complete or the print quality might be affected If the alert or warning message is related to printing and the auto continue feature is on the product will attempt to resume the printing job after the warning has appeared for 10 seconds without acknowledgement Alert and warning message tables Control panel message Description Recommended action Device error Press OK The product experienced an internal communication error This is a warning message only Job output might be affected Jam in print paper path alternates with Open door and clear jam The product has detected a jam in the paper path Clear the jam from the area indicated on the product control panel and then follow the control panel instructions See Clear jams on page 111 Page too complex The product could not print the current page because of its complexity Press OK to clear the message Press OK Allow the product to finish the job or press Cancel to cancel the job Printer jam The product has detected a jam in the inpu
75. d panels on page 169 RL1 1735 000CN Cover left External covers and panels on page 169 RL1 1736 000CN Cover right External covers and panels on page 169 178 Chapter7 Parts Table 7 13 Numerical parts list continued Part number RM1 3953 000CN Description Scanner link assembly left Table and page Assemblies on page 167 RM1 3954 000CN Scanner link assembly right Assemblies on page 167 RM1 4196 000CN RM1 4207 000CN Motor 24V DC Separation pad assembly Internal components 3 of 3 on page 175 Internal components 2 of 3 on page 173 RM1 4234 000CN Roller transfer Internal components 2 of 3 on page 173 RM1 4721 000CN Fuser assembly 110v 220v Internal components 1 of 3 on page 171 RM1 4722 000CN Paper pickup tray assembly Assemblies on page 167 RM1 4724 005CN Laser scanner assembly Internal components 3 of 3 on page 175 RM1 4725 000CN Paper delivery tray assembly Assemblies on page 167 RM1 4726 000CN Fuser assembly 220v 240v Internal components 1 of 3 on page 171 RM1 4727 000CN Paper pickup assembly Internal components 2 of 3 on page 173 RM1 4932 000CN Engine controller PCA ECU 110v 220v Internal components 1 of 3 on page 171 RM1 4935 000CN Motor controller PCA Internal components 3 of 3 on page 175 RM1 4936 000CN En
76. d then press OK Use the arrow buttons to select Cleaning Mode and then press OK A page feeds through the product slowly Discard the page when the process is completed Load plain letter or A4 paper when you are prompted Press OK again to confirm and begin the cleaning process A page feeds through the product slowly Discard the page when the process is completed Archive print Archive print produces output that is less susceptible to toner smearing and dusting Use archive print to create documents that you want to preserve or archive 138 Chapter 6 Problem solve ENWW Turn on archive print 1 On the product control panel press Setup 2 Use the arrow buttons to select Service and then press OK 3 Use the arrow buttons to select Archive print On or Off and then press OK ENWW Problem solving tools 139 Problem solving diagrams e Repetitive image defects e Interface ports e Formatter connectors e ECU connectors e Solenoid and motor e Rollers e Sensors e Major components e PCAs base unit e Circuit diagram Repetitive image defects If the product output has a consistent repetitive defect then use Table 6 1 Repetitive image defects on page 140 to determine which part needs to be replaced based on the measured distance between the repetitions of the defect amp NOTE The following table replaces the graphical repetitive defect ruler You can make your own ruler by using these meas
77. d warranty statement 183 Customer support Get telephone support free during your warranty period for Country region phone numbers are on the flyer that was in the your country region box with your product or at www hp com support Have the product name serial number date of purchase and problem description ready Get 24 hour Internet support www hp com support LJM1120 Get support for products used with a Macintosh computer www hp com go macosx Download software utilities drivers and electronic information www hp com go LJM1120 software Order supplies and paper www hp com go suresupply Order genuine HP parts or accessories www hp com buy parts Order additional HP service or maintenance agreements www hp com go carepack HP maintenance agreements HP has several types of maintenance agreements that meet a wide range of support needs Maintenance agreements are not part of the standard warranty Support services may vary by area Check with your local HP dealer to determine the services available to you Repacking the device If HP Customer Care determines that your device needs to be returned to HP for repair follow the steps below to repack the device before shipping it A CAUTION Shipping damage as a result of inadequate packing is the customer s responsibility 1 Remove and retain the print cartridge A CAUTION Itis extremely important to remove the print cartridg
78. detection sensors detect media as it passes through the printer If media does not reach or pass each sensor within a specified time period the DC controller determines that a jam has occurred and alerts the formatter The following components are identified in Figure 4 8 Pickup feed delivery system on page 42 e M1 main motor e SL1 pickup solenoid e PS701 fuser delivery sensor e PS702 media width sensor e PS751 top of page sensor Figure 4 8 Pickup feed delivery system Pressure roller Feed roller BC 2 LI a i 3 PS701 LI B B Fuser sleeve Photosensitive drum Transfer roller WV PS751 Re ingle sheet feed tra AU Pickup roller i y A Multi purpose tray Separation pad 42 Chapter 4 Operational theory ENWW Image formation system Laser printing requires the interaction of several technologies including electronics optics and electrophotographics to produce a printed page Each process functions independently and must be coordinated with the other product processes Image formation consists of the following five processes e Electrostatic latent image formation e Developing e Transfer e Fusing e Drum cleaning These five processes contain seven steps which are shown in Figure 4 9 Image formation system on page 43 and described in the following sections Figure 4 9 Image formation system Electrostatic latent image formation block
79. e 157 RU6 2637 000CN RM1 3954 000CN RM1 3953 000CN RM1 4725 000CN RM1 4722 000CN CC390 60001 CC539 60001 CC427 60001 CC540 60001 Assemblies 167 External covers and panels Figure 7 3 External covers and panels ENWW 168 Chapter 7 Parts ENWW Table 7 8 External covers and panels Description Cover rear Cover cartridge Cushion scanner Cover right Cover front Cover left Cover top Part number Qty RC2 2971 000CN 1 RC2 2960 000CN 1 RC1 2476 000CN 2 RL1 1736 000CN 1 RL1 1734 000CN 1 RL1 1735 000CN 1 RL1 1732 000CN 1 External covers and panels 169 Internal components 1 of 3 Figure 7 4 Internal components 1 of 3 170 Chapter 7 Parts ENWW ENWW Table 7 9 Internal components 1 of 3 Description Fuser assembly 110v 220v Fuser assembly 220v 240v Engine controller PCA ECU 110v 220v Engine controller PCA ECU 220v 240v Link coupling Part number Qty RM1 4721 000CN 1 RM1 4726 000CN 1 RM1 4932 000CN 1 RM1 4936 000CN 1 RC2 2965 000CN 1 Internal components 1 of 3 171 Internal components 2 of 3 Figure 7 5 Internal components 2 of 3 ENWW 172 Chapter 7 Parts ENWW Table 7 10 Internal components 2 of 3 Description Paper pickup assembly Roller transfer Roller pickup Separation pad assembly Latch left Latch right Part number Qty RM1 4727 000CN 1 RM1 4234 000CN 1 RL1 1497 000CN 1 RM1 4207
80. e before shipping the device A print cartridge that remains in the device during shipping will leak and entirely cover the device engine and other parts with toner To prevent damage to the print cartridge avoid touching the roller on it and store the print cartridge in its original packing material or so that it is not exposed to light 2 Remove and retain the power cable interface cable and optional accessories 3 If possible include print samples and 50 to 100 sheets of paper or other print media that did not print correctly 4 Inthe U S call HP Customer Care to request new packing material In other areas use the original packing material if possible Hewlett Packard recommends insuring the equipment for shipment Extended warranty HP Support provides coverage for the HP hardware product and all HP supplied internal components The hardware maintenance covers a 1 to 3 year period from date of the HP product purchase The customer must purchase HP Support within the stated factory warranty For more information contact the HP Customer Care Service and Support group 184 Appendix A Service and support ENWW B Specifications ENWW This section contains the following information about the product Physical specifications Electrical specifications Power consumption Environmental specifications Acoustic emissions 185 Physical specifications Table B 1 Physical specifications Produc
81. e print media When the print media comes in contact with the photosensitive drum the toner is transferred to the print media 44 Chapter 4 Operational theory ENWW Figure 4 12 Transfer Transfer roller Ji TT Step 5 Separation The elasticity of the print media causes its separation from the photosensitive drum A static charge eliminator aids separation by weakening any electrostatic adhesion Figure 4 13 Separation Photo sensitive drum 4 Media Static charge eliminator Transfer roller Step 6 Fusing The DC negative bias applied to the fusing film strengthens the holding force of the toner on the print media and prevents the toner from scattering ENWW Image formation system 45 Figure 4 14 Fusing Fuser film Fuser film Fuser heater Media Pressure roller Step 7 Drum cleaning The cleaning blade scrapes the residual toner off of the photosensitive drum and deposits it into the waste toner case Figure 4 15 Drum cleaning Cleaner container Cleaning blade SJ Photosensitive drum Sweeper strip 46 Chapter 4 Operational theory ENWW 5 Removal and replacement e Removal and replacement strategy e Scanner assembly e Product base ENWW 47 Removal and replacement strategy o Introduction e Before performing service e After performing service e Post service tests e Parts removal order Introduction This chapter
82. e the drive gear assembly and drive belt 3 of 4 104 Remove the Drive gear assembly and drive belt 4 Of 4 104 Print cartridge high voltage connection points right side 133 Print cartridge high voltage connection points left side 134 Forimatter Connectors x ai entire e uetus Post testo il en He din let nt nt AU 142 ECU connectors 5 ti edente cine ten RE 143 Solenoid and MOTOT 44 it edes de tpe cire Lea eec e quta Lua gud ci bara a a Mu da add 144 Rollers eet d mend Usiseteset cn ie RS 145 Sic 146 Major componehts eee hereto teer ree de de sh iene c e ree tete repe te eee AE Wea ds 147 PCAS base unit tiat eene ed eet eene eee e ege e os ned eh eens ed due etd 148 Circuit diagratm 2 Ren PR en onde n net en M 149 ocanrierassemnblies a ter nen pte ien nitidi tere iind eni bititeriadt abiere nay 164 ASSOMDIIGS EU 166 External covers and panels ss 168 Internal components 1 Of 3 iie e haee re Gna pe EE REEL ees 170 Internal components 2 Of 3 iib ttt ER ta ER DERR ain Rea pl ea RR RR x Ra ped 172 Internal components 3 of 3 sie 174 xiii xiv ENWW 1 Product information e Quick access to product information e Product comparison e Product features e Product walkaround e Software description e Software for Windows e Software for Macintosh e Uninstall software e Media specifications ENWW Quick access to product in
83. e the product Clean the lid backing Minor debris can accumulate on the white document lid backing that is located underneath the product lid 1 Turn off the product unplug the power cord and raise the lid 2 Clean the white document lid backing by using a soft cloth or sponge that has been moistened with a mild soap and warm water Wash the backing gently to loosen debris do not scrub the backing 28 Chapter 3 Maintenance ENWW 3 Dry the backing by using a chamois or soft cloth A CAUTION Do not use paper based wipes because they might scratch the backing 4 fthis does not clean the backing well enough repeat the previous steps and use isopropyl alcohol to dampen the cloth or sponge and then wipe the backing thoroughly with a damp cloth to remove any residual alcohol Clean the paper path During the printing process paper toner and dust particles can accumulate inside the product Over time this buildup can cause print quality problems such as toner specks or smearing This product has a cleaning mode that can correct and prevent these types of problems Specks Smearing AaBboGc AaBbCc AaBbCGc AaBhCc AaBbCc AaB Cc AaBbCc AaBb Cc AaBbCc AaBbCc 1 Press Setup Use the arrow buttons to find the Service menu and then press OK Use the arrow buttons to find Cleaning mode and then press OK Load plain letter or A4 paper when you are prompted m m ww m Pr
84. ectromagn tiques CEM EMI statement Korea ENWW Safety statements 195 Laser statement for Finland Luokan 1 laserlaite Klass 1 Laser Apparat HP LaserJet M1120 M1120n laserkirjoitin on kayttajan kannalta turvallinen luokan 1 laserlaite Normaalissa k yt ss kirjoittimen suojakotelointi est lasers teen p syn laitteen ulkopuolelle Laitteen turvallisuusluokka on m ritetty standardin EN 60825 1 1994 mukaisesti VAROITUS Laitteen k ytt minen muulla kuin kaytt6ohjeessa mainitulla tavalla saattaa altistaa k ytt j n turvallisuusluokan 1 ylitt v lle n kym tt m lle lasers teilylle VARNING Om apparaten anv nds p annat s tt n i bruksanvisning specificerats kan anv ndaren uts ttas f r osynlig laserstr lning som verskrider gr nsen f r laserklass 1 HUOLTO HP LaserJet M1120 M1120n kirjoittimen sis ll ei ole k ytt j n huollettavissa olevia kohteita Laitteen saa avata ja huoltaa ainoastaan sen huoltamiseen koulutettu henkil T llaiseksi huoltotoimenpiteeksi ei katsota v riainekasetin vaihtamista paperiradan puhdistusta tai muita k ytt j n k sikirjassa lueteltuja k ytt j n teht v ksi tarkoitettuja yll pitotoimia jotka voidaan suorittaa ilman erikoisty kaluja VARO Mik li kirjoittimen suojakotelo avataan olet alttiina n kym tt m llelasers teilylle laitteen ollessa toiminnassa l katso s teeseen VARNING Om laserprinterns skyddsh lje
85. eeeeeeeeeceeeeeaeaaaeaaecaeeeaecaeeeeeeeeeees 126 Copy problems sien aac ganic cecuednegiedvadneastacersaduaausagvseddnagacdieg team daniel ete tenetes ta ter 127 Prevent problems sise 127 V Image problems e ete eed ie bad rea deu AM cua Doc deb ku DOOR Dea Ge Mie 127 Media handling problems inet iter tete tert axe e E FERE SERRE Yd Ev cceree pacneeees 128 Performance problemis eden e ett nha itd ae e AER Run aba Leg Ra Ee deae g i en nada ek 130 FUNCHONAL Checks THE 131 Engine test Page asian aden MERO nde er decane ces 131 Drum rotation test ss 131 Half self test functional check sse enne 132 Perform a half self test check ssssssssssssssseeeeernnnnne 132 Perform other checks 1 nter etti e tiep eH He ree ene euis 132 Heating element check iii 133 High voltage contacts check issues 133 Check the print cartridge contacts ssssssse 133 Check the high voltage connector assembly ssssseeeeee 134 SEFVICS MOAETUMCHONMS EP 135 NVRAM initialization cnt rore n Re tra Sdn NA RNSHB a i S CKMEAKRNN ANY RARE ate 135 Super NVRAMI initlallZatiOn cate oin ne nennt dne nean d ER RR RR RR TERR ERREUR AN MARE RATES UR ERR tu s 135 Secondary service meni d E t ade e abd ba ERR aha aa do ERR 135 Problem SOlViIng tOOIS EDS 137 Product information pages and reports ssssssssssssssssssese ntt tnnn rennene 137 Configuration Dage ER E
86. emblies e Assemblies e External covers and panels e Internal components 1 of 3 e Internal components 2 of 3 e Internal components 3 of 3 e X Alphabetical parts list e Numerical parts list ENWW 151 Ordering information Order replacement parts supplies and paper from the following Web sites e To order genuine HP parts and accessories go to www hp com buy parts com e Toorder supplies and paper go to www hp com buy suresupply com Supplies and hinge tool Product name Description Part number Replacement print cartridge Average yield for the print cartridge is approximately 2 000 pages Actual yield depends on use CB436A new CB436 67901 exchange Scanner hinge tool Use this tool to secure the scanner in the 5185 7441 open position when the link assemblies are disengaged Cable and interface accessories Product name Description Part number USB cable 2 meter standard USB compatible C6518A device connector 3 meter standard USB compatible C6520A device connector Power cord U S Canada 1 8 M 6 ft 8120 8382 Europe 1 8 M 6 ft 8121 0516 Switzerland 1 8 M 6 ft 8121 0519 United Kingdom 1 8 M 6 ft 8121 0517 Denmark 1 8 M 6 ft 8121 0518 South America 1 8 M 6 ft 8121 0520 Israel 1 8 M 6 ft 8121 1004 152 Chapter 7 Parts Whole unit replacement Use the tables in this section to find the whole unit replacement p
87. ement ENWW This HP product is warranted to be free from defects in materials and workmanship This warranty does not apply to products that a have been refilled refurbished remanufactured or tampered with in any way b experience problems resulting from misuse improper storage or operation outside of the published environmental specifications for the device product or c exhibit wear from ordinary use To obtain warranty service please return the product to place of purchase with a written description of the problem and print samples or contact HP customer support At HP s option HP will either replace products that prove to be defective or refund your purchase price TO THE EXTENT ALLOWED BY LOCAL LAW THE ABOVE WARRANTY IS EXCLUSIVE AND NO OTHER WARRANTY OR CONDITION WHETHER WRITTEN OR ORAL IS EXPRESSED OR IMPLIED AND HP SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT ALLOWED BY LOCAL LAW IN NO EVENT WILL HP OR ITS SUPPLIERS BE LIABLE FOR DIRECT SPECIAL INCIDENTAL CONSEQUENTIAL INCLUDING LOST PROFIT OR DATA OR OTHER DAMAGE WHETHER BASED IN CONTRACT TORT OR OTHERWISE THE WARRANTY TERMS CONTAINED IN THIS STATEMENT EXCEPT TO THE EXTENT LAWFULLY PERMITTED DO NOT EXCLUDE RESTRICT OR MODIFY AND ARE IN ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU Print cartridge limite
88. er connectors 142 formatter remove 81 fraud hotline 27 front cover remove 79 fuser cover remove 77 remove 96 warranty 183 fuser assembly diagrams 147 fuser sleeve locating 38 fuser unit locating 38 G Getting Started Guide 2 getting started guides part numbers 160 glass cleaning 28 gray background troubleshooting 121 guidelines supplies storing 24 guides documentation 2 H half self test functional check 132 heating element check 133 high voltage connector assembly cleaning 134 high voltage contacts cleaning 133 high voltage PCA 39 high voltage power supply checking 133 hinge tool partnumber 152 HP Customer Care 184 HP Director Macintosh 10 HP fraud hotline 27 HP SupportPack 184 HP Web Jetadmin using 30 humidity specifications environment 187 l image quality archive print setting 138 cleaning page printing 138 copy troubleshooting 127 print troubleshooting 118 119 repetitive image defects 140 scans troubleshooting 124 126 image formation system operations 43 testing 132 information pages configuration 137 demo page 137 menu map 137 ENWW input tray loading media 19 install tray 1 20 installation software advanced 8 easy 7 installing Windows software 7 installing hardware scanner cushions 70 interface ports cables ordering 152 locating 6 141 types included 4 internal components 38 internal components part numbers 170 J jams causes of 111 locating 112 output bin
89. ersostet qentee METER ORE e URTEIL e XAR NEA ARMAR tege NR ERUR ET RERN TUN EUS 164 ASSemiblies x cte cte d ae ee tete tite en a tei eh PUERTA FEN SE OR Fano don de 166 vi ENWW External covers and panels sens 168 Internal components 1 of 9 Far Er din nee deniers dad 170 Internal components 2 0f 9 e rdc t etae trade dea ENAN pe e de Og b de det ndo a dd dua 172 Internal components 9 Of 3 io iie p E e ia ne EE eri HEBR dg oaa Rape des 174 Alphabetical parts lists ae e RR aa IRR IR RAS a elite saines 176 Numerical parts list sise 178 Appendix A Service and support Hewlett Packard limited warranty statement ss 181 Customer self repair warranty service use 182 Print cartridge limited warranty statement ss 183 Customer SUPPOR dE 184 HP maintenance agreements iii 184 Repacking th device 2 eee ice tak eurer RE Cdp e F EHE ee HEBR Lee XR BRE Eo YE RR HS 184 Extended Warranty eiecerunt AEE RR De E EERR A XR e ERRRE ni 184 Appendix B Specifications Physical specifications eie b Ee be eu iyd desee esta dede ex Mao oen mi Pea pea ance e Ep depen 186 Electrical specifications eR Tem 186 Power Consumption DE 186 Environmental specifications tio reati rie te iege dere ee Rena eee CERE NE YR ERE lande SR Gtuc ture ded tien en aan 187 ACOUSTIC EMISSIONS RR tisini L 187 Appendix C Regulatory information FC
90. es part numbers 164 scanner hinge tool part number 152 scanning blank pages troubleshooting 126 quality troubleshooting 124 126 speed troubleshooting 125 scatter troubleshooting 123 screwdrivers required 49 screws self tapping 48 types of 163 screws replacing 48 secondary service menu 135 self tapping screws 48 sensors locating 146 Index 203 media detection 42 scanner operations 36 separation pad replacing 66 separation pad locating 38 separation pads diagrams 147 sequence of operations 34 serial number locating 6 service critical error messages 109 part numbers 152 repacking device 184 secondary menu 135 service agreements 184 Service menu 138 servicing 49 servicing product 48 settings configuration page 137 factory set defaults restoring 138 NVRAM initialization 135 shipping device 184 side covers remove product 74 size 186 size copy troubleshooting 130 skewed pages 122 slow speed troubleshooting scanning 125 smeared toner troubleshooting 121 software advanced installation 8 components 7 easy installation 7 embedded Web server 30 HP Web Jetadmin 30 supported operating systems 7 system requirements 17 uninstall 11 Windows 9 solenoid 144 specifications acoustic emissions 187 electrical 186 9 10 204 Index environmental 187 physical 186 product features 4 specks troubleshooting 120 speed print specifications 4 scanning troubleshooting 125 spots troubleshooting scans
91. ess OK again to confirm and begin the cleaning process A page feeds through the product slowly Discard the page when the process is completed ENWW Clean the product 29 Management tools Information pages Information pages reside within the product memory These pages help diagnose and solve problems with the product amp NOTE Ifthe product language was not correctly set during installation you can set the language manually so the information pages print in one of the supported languages Change the language by using the System setup menu on the control panel or the embedded Web server network models only Page description How to print the page Demo page 1 On the product control panel press Setup Contains examples of text and graphics 2 Use the arrow buttons to select Reports and then press OK 3 Use the arrow buttons to select Demo page and then press OK Menu map 1 On the product control panel press Setup Shows the control panel menus and available settings 2 Use the arrow buttons to select Reports and then press OK 3 Use the arrow buttons to select Menu structure and then press OK Configuration page 1 On the product control panel press Setup Shows the current settings and product properties 2 Use the arrow buttons to select Reports and then press OK 3 Use the arrow buttons to select Config report and then press OK Embedded Web server This product is equipped wi
92. formation 2 Use the following Web site to find information about the product e www hp com support LJM1 120 Table 1 1 Product guides Guide Description HP LaserJet M1120 MFP Getting Provides step by step instructions for installing and setting up the product Started Guide HP LaserJet M1120 MFP Series Provides detailed information for using the product and problem solving Available on the User Guide product CD or in Program Group if the software is installed on a computer Online Help Provides information about options that are available in the printer drivers To view a Help file open the online Help through the printer driver Eat Chapter 1 Product information ENWW Product comparison The product is available in the following configurations ENWW Base models Network models e Print letter size pages at speeds up to 20 pages per Base model plus minute ppm and A4 size pages at speeds up to 19 ppm e 10 100 Base T Ethernet network port e Priority input tray holds up to 10 sheets of print media e Pv4 network protocol e Tray 1 holds up to 250 sheets of print media or 10 envelopes e Pv6 network protocol e Manual two sided duplex printing and copying e Hi Speed USB 2 0 port e 32 megabyte MB random access memory RAM e Flatbed sc
93. ght not meet Use media that meets OA HP specifications HP specifications AaBbCc A d The paper path might need Clean the paper path See Clean AaBboc cleaning the paper path on page 29 AaBbCc AaBbCc AQBbCc Dropouts appear A single sheet of print media might Try reprinting the job a be defective AabBbCc JI The moisture content of the paper Try different paper such as high AO BbCc is uneven or the paper has moist quality paper that is intended for AC ECC spots on its surface laser printers Ac BbCc The paper lot is flawed The e manufacturing processes can AQ BbCc cause some areas to reject toner The print cartridge might be Replace the print cartridge See defective Print cartridge on page 25 If the error persists contact HP See www hp com support LJM1120 or the support flyer that came in the product box Vertical streaks or bands The print cartridge might be Replace the print cartridge See appear on the page defective If you are using a non Print cartridge on page 25 Bb HP print cartridge no messages Bb appear on the product control panel 120 Chapter 6 Problem solve ENWW Problem Example Cause Solution The amount of background toner shading becomes unacceptable AaBbCc AaBbCc AaBbCc AaBbcc AaBbcc The media might not meet HP specifications Use a different paper with a lighter basis weight The priority input tray might be installed incorrectly
94. gine controller PCA ECU 220v 240v Internal components 1 of 3 on page 171 RU6 2637 000CN Scanner spring tension Assemblies on page 167 See Control panel Control panel overlay Assemblies on page 167 overlays on page 157 M BM M M MR ae ENWW Numerical parts list 179 180 Chapter 7 Parts ENWW A Service and support Hewlett Packard limited warranty statement HP PRODUCT DURATION OF LIMITED WARRANTY HP LaserJet M1120 and M1120n One year limited warranty HP warrants to you the end user customer that HP hardware and accessories will be free from defects in materials and workmanship after the date of purchase for the period specified above If HP receives notice of such defects during the warranty period HP will at its option either repair or replace products which prove to be defective Replacement products may be either new or equivalent in performance to new HP warrants to you that HP software will not fail to execute its programming instructions after the date of purchase for the period specified above due to defects in material and workmanship when properly installed and used If HP receives notice of such defects during the warranty period HP will replace software which does not execute its programming instructions due to such defects HP does not warrant that the operation of
95. hassis hinge pins Lift the scanner assembly off of the product base A CAUTION Make sure that the scanner lid is supported so that it does not swing open when you remove the scanner assembly NOTE Do notlose the two scanner cushions in the scanner support frame corners when moving the product base See Scanner cushions on page 70 Figure 5 22 Remove the scanner assembly 10 of 10 64 Chapter 5 Removal and replacement ENWW Product base Gf NOTE Your product might not appear exactly as the one shown in the photos in this chapter For example the color of the external panels and covers might be different than your product However this does not affect the validity of the procedures in this chapter Print cartridge A CAUTION To prevent damage do not expose the print cartridge to direct or bright light Cover it with a piece of paper 1 Push the print cartridge door release button and raise the scanner assembly until it locks open Figure 5 23 Remove the print cartridge 1 of 2 CU 2 Pull the print cartridge up and out of the product Figure 5 24 Remove the print cartridge 2 of 2 ENWW Product base 65 Separation pad 1 Position the product with the rear side facing you 2 Support the product and tip it forward Remove two screws callout 1 Figure 5 25 Remove the separation pad 1 of 2 3 Remove the separation pad and frame Figure 5 26 Remove the separation pad 2 of
96. he print cartridge door button to release the scanner assembly and then raise the assembly until it locks open Figure 5 17 Remove the scanner assembly 5 of 10 6 Disconnect two FFCs callout 3 J10 and J12 on the formatter Remove one FFC from the ferrite callout 4 XX TIP It might be easier to thread the FFC through the ferrite by removing one screw and the ferrite callout 4 The ferrite is not captive in the bracket and can be dislodged when you remove the bracket Figure 5 18 Remove the scanner assembly 6 of 10 R 62 Chapter5 Removal and replacement ENWW Grasp the tab on the gear drive arm bracket and carefully flex it away from the scanner assembly to release the bracket Figure 5 19 Remove the scanner assembly 7 of 10 Push the bracket toward the right side of the product until its mounting tabs clear the holes in the scanner assembly Figure 5 20 Remove the scanner assembly 8 of 10 t L ENWW Scanner assembly 63 9 Use a small flat blade screwdriver to release the tabs on each link assembly A WARNING When the links are disengaged the scanner assembly can easily fall off of the product base if it is rotated too far toward the back of the product A CAUTION Do not push too hard on the link tabs or the tabs might break Figure 5 21 Remove the scanner assembly 9 of 10 10 Rotate the scanner assembly toward the rear of the product until the rear hinges clear the c
97. here HP has marketed this product The level of warranty service you receive may vary according to local standards HP will not alter form fit or function of the product to make it operate in a country region for which it was never intended to function for legal or regulatory reasons TO THE EXTENT ALLOWED BY LOCAL LAW THE REMEDIES IN THIS WARRANTY STATEMENT ARE YOUR SOLE AND EXCLUSIVE REMEDIES EXCEPT AS INDICATED ABOVE IN NO EVENT WILL HP OR ITS SUPPLIERS BE LIABLE FOR LOSS OF DATA OR FOR DIRECT SPECIAL INCIDENTAL CONSEQUENTIAL ENWW Hewlett Packard limited warranty statement 181 INCLUDING LOST PROFIT OR DATA OR OTHER DAMAGE WHETHER BASED IN CONTRACT TORT OR OTHERWISE Some countries regions states or provinces do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you THE WARRANTY TERMS CONTAINED IN THIS STATEMENT EXCEPT TO THE EXTENT LAWFULLY PERMITTED DO NOT EXCLUDE RESTRICT OR MODIFY AND ARE IN ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU Customer self repair warranty service HP products are designed with many Customer Self Repair CSR parts to minimize repair time and allow for greater flexibility in performing defective parts replacement If during the diagnosis period HP identifies that the repair can be accomplished by the use of a CSR part HP will ship that part directly to you for replacement
98. ies e Clean the product e Management tools ENWW 23 Manage supplies Inspect any parts that wear when servicing the product Replace them as needed based on failure or wear rather than usage The following table lists approximate schedules for replacing consumables Life expectancies of supplies Item Capacity HP LaserJet M1120 MFP Series Recommended maximum of 3 000 pages per month Print cartridge 2 000 pages standard Ere 1 For information about the yield for the cartridges see www hp com go pageyield Actual yield depends on specific use Check and order supplies Hewlett Packard recommends that you place an order for a replacement print cartridge when the Low message for a print cartridge first appears Use a new authentic HP print cartridge to obtain the following types of supplies information Amount of cartridge life remaining Estimated number of pages remaining Number of pages printed Other supplies information Store supplies Follow these guidelines for storing print cartridges e Do not remove the print cartridge from its package until you are ready to use it A CAUTION To prevent damage do not expose the print cartridge to light for more than a few minutes e See Environmental specifications on page 187 for operating and storage temperature ranges e Store the supply in a horizontal position e Storethe supply in a dark dry location away from heat and magnetic source
99. il or use an ink pen with the cap on to seat each cushion in its well Figure 5 32 Installing the scanner cushions a 70 Chapter 5 Removal and replacement ENWW Media input tray 1 Open the media input tray lid Figure 5 33 Remove the media input tray 1 of 3 E Nw 2 Slide the adjustable media guides to the center of the tray Figure 5 34 Remove the media input tray 2 of 3 ENWW Product base 71 3 Depress the pickup tray locking tabs to release the media input tray and then pull it out and away from the product Figure 5 35 Remove the media input tray 3 of 3 72 Chapter 5 Removal and replacement ENWW Transfer roller A CAUTION Do not touch the black sponge portion of the transfer roller Skin oils deposited on the transfer roller might cause print quality problems ENWW 1 2 Open the print cartridge door and remove the print cartridge Release the two small tabs on the transfer roller and then slide the roller to the right to release the left end of the roller shaft Remove the transfer roller Figure 5 36 Remove the transfer roller EE ACHTUNG HEISS MA wem Product base 73 Side covers Ef NOTE The procedure for removing the right side and left side covers is identical The right side cover is shown in the following procedure 1 Remove one screw callout 1 Callout 2 is the left side cover screw Figure 5 37 Remove the side covers 1 of 4 2 Relea
100. in the bracket and can be dislodged when you remove the bracket Figure 5 60 Remove the scanner support frame 3 of 5 ENWW Product base 87 5 Lift the scanner support frame up and off of the product Figure 5 61 Remove the scanner support frame 4 of 5 6 If you are removing the scanner support frame to gain access to the fuser remove two screws callout 5 and the chassis reinforcement bracket callout 6 Figure 5 62 Remove the scanner support frame 5 of 5 88 Chapter 5 Removal and replacement ENWW Laser scanner assembly 1 Remove the following assemblies e Scanner assembly See Scanner assembly on page 60 e Right and left cover See Side covers on page 74 e Print cartridge door See Print cartridge door on page 76 e Rear cover and fuser cover See Rear cover and fuser cover on page 77 e Front cover See Front cover on page 79 e Scanner support frame See Scanner support frame on page 86 2 Remove three screws callout 1 and one sheet metal bracket callout 2 Figure 5 63 Remove the laser scanner 1 of 7 ENWW Product base 89 3 Release one tab and one spring callout 3 and then remove right side scanner assembly locking lever Figure 5 64 Remove the laser scanner 2 of 7 4 Push the shaft to the left to disengage it you might need to release the left side locking lever spring and then rotate the shaft towards the front of the product until the left side scanner a
101. ing callout 2 and developing roller callout 3 If they are dirty or corroded clean the connection If they are damaged replace the print cartridge Gf NOTE Use only isopropyl alcohol to clean the connections ENWW Functional checks 133 Figure 6 2 Print cartridge high voltage connection points left side Ye Check the high voltage connector assembly Visually inspect the cartridge connection points inside the product to make sure that they are not dirty or corroded If the pins are dirty clean them by using isopropyl alcohol only 134 Chapter 6 Problem solve ENWW Service mode functions NVRAM initialization An NVRAM initialization returns the device settings to the factory set defaults 1 Turn off the product 2 Press and hold both the Start Copy button and the Cancel button and then turn on the product 3 Wait until the message Permanent storage init appears and then release the buttons When the NVRAM initialization process finishes the product control panel shows the Ready message Super NVRAM initialization The super NVRAM initialization clears all settings affected by a regular NVRAM initialization and also clears the product language and country region settings Both settings must be reset after a super NVRAM initialization 1 Turn off the product 2 Press and hold both the right arrow button and the Cancel button and then turn on the product 3 Wait until the message Permanent storage i
102. irefox The embedded Web server resides on the device It is not loaded on a network server The embedded Web server provides an interface to the device that anyone who has a network connected computer and a standard Web browser can use No special software is installed or configured but you must have a supported Web browser on your computer To gain access to the embedded Web server type the IP address for the device in the address line of the browser To find the IP address print a configuration page HP Director HP Director is a software program for working with documents HP Director appears on the computer screen to initiate scanning or to change settings on the product through Macintosh Configure Device Also included is the HP product Setup Assistant which sets up the print queue 10 Chapter 1 Product information ENWW Uninstall software Windows 1 Click Start and then click All Programs 2 Click HP and then click HP LaserJet M1120 3 Click Uninstall and then follow the onscreen instructions to remove the software Macintosh To remove the software drag the PPD files to the trash can ENWW Uninstall software 11 Media specifications Supported paper and print media sizes This product supports a number of paper sizes and it adapts to various media amp NOTE To obtain best print results select the appropriate paper size and type in the print driver before printing Table 1 2 Supported paper
103. is being recycled and used in new materials it will not be returned to you Thank you for being environmentally responsible NOTE Use the return label to return original HP LaserJet print cartridges only Please do not use this label for HP inkjet cartridges non HP cartridges refilled or remanufactured cartridges or warranty returns For information about recycling your HP inkjet cartridges please go to http www hp com recycle Return and recycling instructions United States and Puerto Rico The enclosed label in the HP LaserJet toner cartridge box is for the return and recycling of one or more HP LaserJet print cartridges after use Please follow the applicable instructions below Multiple returns two to eight cartridges 1 Package each HP LaserJet print cartridge in its original box and bag 2 Tape up to eight single boxes together using strapping or packaging tape up to 70 Ibs 3 Use a single pre paid shipping label OR 1 Use your own suitable box or request a free bulk collection box from the http www hp com recycle or 1 800 340 2445 holds up to eight HP LaserJet print cartridges 2 Use a single pre paid shipping label Single returns 1 Package the HP LaserJet print cartridge in its original bag and box 2 Place the shipping label on the front of the box Shipping For all HP LaserJet print cartridge recycling returns give the package to UPS during your next delivery or pickup or take it to an auth
104. ith the printer driver Try printing from another printer driver Try printing from a different program If the page prints correctly the problem is with the program from which you were printing Restart the computer and the product and then try printing again If the problem is not resolved see General print quality issues on page 120 Print problems 119 General print quality issues The following examples depict letter size paper that has passed through the product short edge first These examples illustrate problems that would affect all of the pages that you print The topics that follow list the typical cause and solution for each of these examples Problem Example Cause Solution Print is light or faded The media might not meet Use media that meets HP specifications HP specifications Aa Cc A C The print cartridge might be Replace the print cartridge See a C defective If you use a non Print cartridge on page 25 Aa Cc HP print cartridge no messages appear on the product control If the print cartridge is not low or panel empty inspect the toner roller to Aa Cc see ifthe roller is damaged If it is Aa Cc replace the print cartridge If the whole page is light the print Adjust the print density and density adjustment is too light or disable EconoMode in the EconoMode might be turned on product Properties Toner specks appear 7 The media mi
105. lean the flatbed scanner surface See Clean the flatbed scanner glass on page 28 Black dots Unclear text Ink glue correction fluid or an unwanted substance might be on the glass Clean the flatbed scanner surface See Clean the flatbed scanner glass on page 28 The power to the product might have fluctuated The resolution levels might be set incorrectly Reprint the job Verify that the correct resolution settings are correct 126 Chapter6 Problem solve ENWW Copy problems Prevent problems The following are a few simple steps you can take to improve copy quality e Use quality originals e Place the media on the flatbed glass correctly face down with the upper left corner of the document at the corner of the glass indicated by the icon e Use or make a carrier sheet to protect your originals RE E NOTE Verify that the media meets HP specifications If the media meets HP specifications recurring feed problems indicate the pickup roller or separation pad is worn Image problems Problem Cause Solution Images are missing or faded The print cartridge might be defective Replace the print cartridge See Print cartridge on page 25 The original might be of poor quality If your original is too light or damaged the copy might not be able to compensate even if you adjust the contrast If possible find an original document in better condition The contrast
106. led there will be additional FFCs connected to the formatter You do not need to remove the scanner assembly to remove the formatter 3 Remove four screws from the formatter PCA callout 1 Remove the formatter Figure 5 50 Remove the formatter ENWW Product base 81 Power supply 1 Remove the following assemblies e Right and left covers See Side covers on page 74 e Rearcover and fuser cover See Rear cover and fuser cover on page 77 e Front cover See Front cover on page 79 e Formatter See Formatter on page 81 2 Disconnect one spade connector callout 1 and remove three screws callout 2 Figure 5 51 Remove the power supply 1 of 7 3 Remove six screws callout 3 and the sheet metal plate callout 4 82 Chapter 5 Removal and replacement ENWW 4 Disconnect three FFCs callout 5 and six wire harness connectors callout 6 A CAUTION Do not bend or fold the FFCs during the removal or reinstallation process Figure 5 53 Remove the power supply 3 of 7 5 Release the ground wire from the retainer callout 7 on the product chassis amp NOTE You might need to slightly pry up on the scanner support frame to release the wire from the retainer Figure 5 54 Remove the power supply 4 of 7 ENWW Product base 83 6 Release the wire harness from the retainer callout 8 on the power supply Figure 5 55 Remove the power supply 5 of 7 1 8 lu n
107. ler LASER SCANNER SYSTEM Low voltage power supply Formatter IMAGE FORMATION SYSTEM High voltage power supply PICKUP AND FEED SYSTEM Fixing control ENWW Engine control system 39 Figure 4 6 Engine control system circuit diagram Engine controller L Ls ug we Fixing control 54 l E Solenoid Low voltage A t C impu power supply DC controller l Weir Sensor High voltage l power supply Laser scanner unit 40 Chapter 4 Operational theory ENWW Laser scanner system The laser scanner system receives video signals from the DC controller and the formatter and then converts the signals into latent images on the photosensitive drum Figure 4 7 Laser scanner system C O Y j ECU Eee 0 0 0 ep JEDE CND ONTLONT e FORMATTER vb vpo __ DOI NVDO E E EA CENE EA joo D VDO1 VDO2 Cylindrical lens BD sensor Mirror ULES ol rai ZE Laser driver PCA RS S Four sided mirror scanner motor e Photosensitive drum ENWW Laser scanner system 41 Pickup feed delivery system The pickup feed delivery system consists of several types of feed rollers and sensors The DC controller uses two motors and two solenoids to drive the rollers Three media
108. might need cleaning Use media that meets HP specifications Clean the paper path See Clean the paper path on page 29 The power source might be defective Plug the product directly into an AC outlet instead of into a power strip The fuser temperature might be too low Use the archive print feature to improve toner fusing ENWW Print problems 121 Problem Example Cause Solution Marks repeatedly appear at even intervals on the page AaBbC AaBbC AaBbCc _ AaBbC AaBbCc The product is not set to print on the type of media on which you want to print In the printer driver make sure that the appropriate media type is selected Print speed might be slower if you are using heavy paper Internal parts might have toner on them The problem typically corrects itself after a few more pages The paper path might need cleaning Clean the paper path See Clean the paper path on page 29 The print cartridge might be damaged If a repetitive mark occurs at the same spot on the page install a new HP print cartridge See Print cartridge on page 25 The printed page contains misformed characters The media might not meet HP specifications Use a different paper such as high quality paper that is intended AGBP i for laser printers AGBP AaBLCS If characters are incorrectly Verify that the problem also fo
109. ncorrect Verify that the quality settings are correct See the product software Help for more information about changing the settings Text is unclear The printer driver or product software settings may be incorrect Verify that the quality settings are correct Verify that the EconoMode setting is off See the product software Help for more information about changing the settings Media handling problems Problem Cause Solution Poor print quality or toner adhesion The paper is too moist too rough too heavy or too smooth or it is embossed or from a faulty paper lot Try another kind of paper between 100 and 250 Sheffield 4 to 6 moisture content Dropouts jamming or curl The paper has been stored incorrectly Store paper flat in its moisture proof wrapping The paper has variability from one side to the other Turn the paper over Excessive curl The paper is too moist has the wrong grain direction or is of short grain construction Use long grain paper The paper varies from side to side Turn the paper over Jamming damage to paper The paper has cutouts or perforations Use paper that is free of cutouts or perforations 128 Chapter 6 Problem solve ENWW Problem Problems with feeding Cause The paper has ragged edges Solution Use high quality paper that is made for laser printers The paper varies from side to side
110. nit appears and then release the buttons When the process finishes the product control panel shows the Ready message Secondary service menu Use this menu to perform various tests and print out special reports Open the secondary service menu 1 Press the Setup button 2 Simultaneously press and then release both the left arrow button and the OK button 3 Press the OK button 4 Use the arrow buttons to select the desired secondary service option and then press the OK button 5 Use the arrow buttons to select the desired submenu option and then press OK 6 After making the necessary menu item choices wait for the product to enter the Ready state and then press Cancel to close the secondary service menu Menu item Submenu Description Service Reports Cont Self Test The continuous self test prints the configuration page repeatedly until you press Cancel Cont Copy Run a continuous copy test to test the copy function Extended Keymap Print the extended keypad map to see all the characters associated with the alphanumeric keys Error Report Print the error report to see firmware errors ENWW Service mode functions 135 SS Menu item Submenu Description Display test Use the Display test sub menu to run a test of the control panel display lights and LCD screen Button test Use the Button test sub menu to run a test of the control panel buttons Show FW Version Use the Show FW Version sub menu t
111. not use a pozidrive screwdriver callout 2 or any motorized screwdriver These can damage screws or screw threads Do not pull directly on the wires to disconnect them A ways pull on the plastic body of a connector to avoid damaging the connector wires Figure 5 1 Phillips and pozidrive screwdriver comparison Before performing service ENWW e f possible print a configuration page to record customer settings and menu map report See Information pages on page 30 e Remove all media from the product and remove the input tray e Turn off the power by using the power switch e Unplug the power and interface cables Removal and replacement strategy 49 e Place the product on an ESD mat if one is available If an ESD protected workstation is not available discharge body static and ground the print engine chassis before touching an ESD sensitive part e Remove the print cartridge See Print cartridge on page 25 After performing service e X Replace the print cartridge and input tray e X Reload the input tray with media e Perform the post service tests See Post service tests on page 51 50 Chapter 5 Removal and replacement ENWW Post service tests After service has been completed the following tests can be used to verify that the repair or replacement was successful Test 1 print quality test 1 Se o 9 m o p P Verify that you have completed the necessary reassembly steps Ensure that the input
112. o display the firmware version number High Speed USB On default Use the High Speed USB to enable or disable the high speed function of the USB port Off TIP Ifthe product has difficulty communicating with a network when using the USB port change this setting to Off Scan Calibration Mono Use the Scan Calibration sub menu to calibrate the product scanner Red Green Blue 136 Chapter 6 Problem solve ENWW Problem solving tools Product information pages and reports Information pages and reports reside within the product memory These pages and reports help diagnose and solve problems with the product Ef NOTE Ifthe product language was not correctly set during installation you can set the language manually so the information pages print in one of the supported languages Change the language by using the System setup menu on the control panel or by using the embedded Web server Configuration page The configuration page shows the current settings and product properties 1 On the product control panel press Setup 2 Use the arrow buttons to select Reports and then press OK 3 Use the arrow buttons to select Config report and then press OK Demo page The demo page contains examples of text and graphics 1 On the product control panel press Setup 2 Use the arrow buttons to select Reports and then press OK 3 Use the arrow buttons to select Demo page and then press OK Menu map The menu map shows the
113. orized UPS drop off center For the location of your local UPS drop off center call 1 800 PICKUPS or visit http www ups com If you are returning via USPS label give the ENWW Environmental product stewardship program 191 package to a U S Postal Service carrier or drop off at a U S Postal Service Office For more information or to order additional labels or boxes for bulk returns visit http www hp com recycle or call 1 800 340 2445 Requested UPS pickup will be charged normal pickup rates Information subject to change without notice Non US returns To participate in HP Planet Partners return and recycling program just follow the simple directions in the recycling guide found inside the packaging of your new printer supply item or visit http www hp com recycle Select your country region for information on how to return your HP LaserJet printing supplies Paper This product is capable of using recycled papers when the paper meets the guidelines outlined in the HP LaserJet Printer Family Print Media Guide This product is suitable for the use of recycled paper according to EN12281 2002 Material restrictions This HP product does not contain added mercury This HP product does not contain a battery Disposal of waste equipment by users in private households in the European Union This symbol on the product or on its packaging indicates that this product must not be disposed of with your other household waste Instead it is
114. p of media sensor PS751 J552 Media sensor PCA fuser delivery sensor PS701 and media width sensor PS702 J562 Pickup solenoid J571 Motor drive PCA J581 TAGIN TAGOUT PCA ENWW Problem solving diagrams 143 Solenoid and motor Figure 6 5 Solenoid and motor SZ Table 6 4 Solenoid and motor Description Pickup solenoid 2 Main motor 144 Chapter 6 Problem solve ENWW Rollers Figure 6 6 Rollers Lo Table 6 5 Rollers Item Description 1 Transfer roller fastened to the rear door 2 Pickup roller ENWW Problem solving diagrams 145 Sensors Figure 6 7 Sensors QS A Table 6 6 Sensors Item Description PS701 Fuser delivery sensor PS702 Media width sensor PS751 Top of page sensor 146 Chapter 6 Problem solve ENWW Major components Figure 6 8 Major components Table 6 7 Major components Item Description 1 Fuser assembly 2 Laser scanner assembly Paper pickup assembly Separation pad assembly ENWW Problem solving diagrams 147 PCAs base unit Figure 6 9 PCAs base unit 1 Formatter PCA 2 Engine controller PCA ECU 148 Chapter 6 Problem solve ENWW ircuit diagram C it diagram IrcuI Figure 6 10 C Jojouu jeuueog Ir trez yun Jeuueog 1ese VOd 9 ug 18587 EL V2d Jej0
115. page 175 Motor controller PCA RM1 4935 000CN Internal components 3 of 3 on page 175 Paper delivery tray assembly RM1 4725 000CN Assemblies on page 167 Paper pickup assembly RM1 4727 000CN Internal components 2 of 3 on page 173 Paper pickup tray assembly RM1 4722 000CN Assemblies on page 167 Roller pickup RL1 1497 000CN Internal components 2 of 3 on page 173 Roller transfer RM1 4234 000CN Internal components 2 of 3 on page 173 Scanner spring tension RU6 2637 000CN Assemblies on page 167 Scanner link assembly left RM1 3953 000CN Assemblies on page 167 Scanner link assembly right RM1 3954 000CN Assemblies on page 167 Separation pad assembly RM1 4207 000CN Internal components 2 of 3 on page 173 SSA PKG FGI ASSY LJm1120 scanner flatbed assembly CB537 67901 Scanner assemblies on page 165 Tray guide left RC2 2979 000CN Internal components 3 of 3 on page 175 Tray guide right RC2 2980 000CN Internal components 3 of 3 on page 175 Alphabetical parts list 177 Numerical parts list Table 7 13 Numerical parts list Part number Description Table and page 7121 8285 LJm1005 HP Jewel Scanner assemblies on page 165 CB537 60102 Flatbed lid Scanner assemblies on page 165 CB537 60109 Control panel assembly LJm112
116. panel messages on page 108 product control panel for a list of common messages that will help you correct the error The control panel should function without error messages 3 Do information pages print An error message appears on the control See Control panel messages on page 108 panel display for a list of common messages that will help Print a configuration page you correct the error Paper jams when printing Make sure that media that meets HP specifications Clean the paper path See Clean the paper path on page 29 4 Does the product copy Paper jams when printing Make sure that media that meets HP specifications Place the configuration page onto the flatbed scanner and Clean the paper path See Clean the paper make a copy The copies path on page 29 should print without print quality problems Poor copy quality from the flatbed 1 Clean the flatbed glass See Clean the flatbed scanner glass on page 28 2 f after performing the maintenance the problem persists see Copy problems on page 127 5 Does the product print from Software is not installed correctly or an error Uninstall and then reinstall the product the computer Use a word processing program to send a print job to the product occurred during software installation software Verify that you are using the correct installation procedure and the correct port setting The cable is not connected correctly Reconnect the cable An incorrect driver
117. product directly into the wall socket 3 Turn on the power and wait for the product to initialize If the error persists contact HP See www hp com support LJM1 120 or the support flyer that came in the product box 110 Chapter 6 Problem solve ENWW Clear jams Causes of jams ENWW Occasionally paper or other print media can become jammed during a print job Some causes include the following events The input trays are loaded improperly or overfilled or the media guides are not set properly Media is added to or removed from an input tray during a print job or an input tray is removed from the product during a print job The cartridge door is opened during a print job Too many sheets have accumulated in an output area or sheets are blocking an output area The print media that is being used does not meet HP specifications The media is damaged or has foreign objects attached to it such as staples or paper clips The environment in which the print media was stored is too humid or too dry Clear jams 111 Where to look for jams Jams can occur in these locations e __Ininput areas e In output areas e Inthe print cartridge area Find and remove the jam by using the instructions on the following pages If the location of the jam is not obvious first look inside the product Loose toner might remain in the product after a jam This problem typically resolves itself after a few sheets have been printed Cle
118. rmality check detect laser scanner failure fuser failure and open covers 10 Communication with the memory tag Basic operation 35 Scanner functions and operation The following sections describe how the document scanner functions Scanner functions The contact image sensor CIS is the major component of the optical scanning system The CIS consists of three LEDs red green and blue a light guide the scanning glass the rod lens array and a sensor array When the CIS scans a document the CIS moves and the paper is stationary Figure 4 2 Optical system 1 of 2 Irradiated light Scanning glass LED light emitter Rod lens array Sensor array light receiver Contact image sensor The formatter controls the CIS To begin scanning the formatter sends a signal to the CIS The LEDs illuminate and the light passes through the light guide and scanning glass and strikes the document Light that the document reflects passes back through the scanning glass and rod lens array into the sensor array The sensor array consists of 5 148 photosensors 468 photosensors on each of 11 sensor driver circuits The sensor array collects and amplifies the reflected light and converts it into serial data in the driver circuits The CIS sends the data to the formatter for image formation 36 Chapter4 Operational theory ENWW Figure 4 3 Optical system 2 of 2 ee OS EE RN RN C QU Contact image sensor
119. rmed so that they produce a occurs on the configuration page ZNaBlcc wavy effect the laser scanner If so contact HP See AGBP might need service www hp com support LJM1120 or the support flyer that came in AaBbCC the product box The printed page is curled ____ The productis not set to print on In the printer driver make sure or wavy AaBbCC AaBbCC AaBbCC AaBbCC AaBbCC ee the type of media on which you want to print the appropriate media type is selected If the problem persists select a media type that uses a lower fuser temperature such as transparencies or light media The media might have been in the input tray too long Turn over the stack of media in the tray Also try rotating the media 180 in the input tray The media might not meet HP specifications Use a different paper such as high quality paper that is intended for laser printers Both high temperature and humidity can cause paper curl Check the product environment Text or graphics are skewed on the printed page AQBbCc AadBbcc AadBbcc AaBbCc The media might be loaded incorrectly or the input tray might be too full Verify that the media is loaded correctly and that the media guides are not too tight or too loose against the stack See Install input devices on page 19 AaBbcc The media might not meet HP specifications Use a different paper such as high quality paper
120. roduct and the power supply box Plug the power cord into a grounded power outlet Clear jams 117 Print problems Print quality problems The information in the following sections helps you identify and resolve print quality issues amp NOTE If you are having copy problems see Copy problems on page 127 Improve print quality Use the print quality settings to prevent print quality problems Print quality settings Print quality settings affect how light or dark the print is on the page and the style in which the graphics are printed You can also use the print quality settings to optimize the print quality for a specific media type You can change the settings in the product properties to accommodate the types of jobs that you are printing The following settings are available depending on the printer driver that you are using e 600 dpi e FastRes 1200 NOTE Changing the resolution can change the formatting of your text Temporarily change print quality settings To change the print quality settings only for the current software program open the properties through the Print Setup menu in the program that you are using to print Change print quality settings for all future jobs amp NOTE For Macintosh instructions see the user guide For Windows 2000 1 In the Windows system tray click Start select Settings and then click Printers 2 Right click the product icon 3 Click Propertie
121. roubleshooting 123 Index 199 crooked pages 122 curled media 122 138 cushions scanner installing 70 customer support online 184 repacking device 184 D dark copying 128 defaults restoring 138 defects repetitive 140 delivery roller locating 38 Demo page printing 137 demo page printing 30 diagrams troubleshooting 140 dimensions media 12 disposal end of life 192 documentation 2 documentation part numbers 160 door cartridge remove 76 dots per inch dpi print settings 118 specifications 4 dots troubleshooting copies 128 dpi dots per inch print settings 118 specifications 4 drivers operating systems supported 7 drum photosensitive 38 drum rotation test 131 E easy software installation 7 ECU connectors 143 electrical specifications 186 electrostatic discharge ESD 49 embedded Web server 9 10 embedded Web server EWS features 30 200 Index end of life disposal 192 engine control system 39 engine test page 131 environmental specifications 16 187 environmental stewardship program 190 error messages control panel 108 critical 109 ESD electrostatic discharge 49 European Union waste disposal 192 extended warranty 184 F factory set defaults restoring 138 faded print 120 FastRes 4 FCC compliance 190 features product 4 feed roller locating 38 Finnish laser safety statement 196 firmware updates 150 flat flexible cables remove parts 48 flatbed scanner glass cleaning 28 Formatt
122. rs and panels on page 169 Engine controller PCA ECU 110v 220v Engine controller PCA ECU 220v 240v RM1 4932 000CN RM1 4936 000CN Internal components 1 of 3 on page 171 Internal components 1 of 3 on page 171 Flatbed lid CB537 60102 Scanner assemblies on page 165 Formatter Asian HP LaserJet M1120 CC539 60001 Assemblies on page 167 Formatter Asian HP LaserJet M1120n CC540 60001 Assemblies on page 167 Formatter standard HP LaserJet M1120 CC390 60001 Assemblies on page 167 Formatter standard HP LaserJet M1120n CC427 60001 Assemblies on page 167 Fuser assembly 110v 220v RM1 4721 000CN Internal components 1 of 3 on page 171 Fuser assembly 220v 240v RM1 4726 000CN Internal components 1 of 3 on page 171 Laser scanner assembly Latch left RM1 4724 005CN RC1 2498 000CN Internal components 3 of 3 on page 175 Internal components 2 of 3 on page 173 Latch right RC1 2499 000CN Internal components 2 of 3 on page 173 176 Chapter 7 Parts ENWW Table 7 12 Alphabetical parts list continued Description Link coupling Part number RC2 2965 000CN Table and page Internal components 1 of 3 on page 171 LJm1005 HP Jewel 7121 8285 Scanner assemblies on page 165 Motor 24V DC RM1 4196 000CN Internal components 3 of 3 on
123. rting watermarks amp NOTE The most recent drivers are available at www hp com support LJM1120 Depending on the configuration of Windows based computers the installation program for the product software automatically checks the computer for Internet access in order to obtain the latest drivers Software included with the product There are several options for completing a recommended install Easy installation will complete the installation with default settings Advanced installation allows you to review the license agreements and the default settings Easy installation for Windows e HP drivers o Printer driver o Scan driver e HP MFP software o HP LaserJet Scan program o Uninstall program e HP Update program e HP Customer Participation program ENWW Software description 7 e Shop for HP Supplies program e Other programs o Readiris OCR not installed with other software separate installation is required Advanced installation Advanced installation includes all of the features that are available with the easy installation The HP Customer Participation program is optional Macintosh software e HP Product Setup Assistant e HP Uninstaller e HP LaserJet software HP Scan o HP Director o Scan to e mail program o HP Photosmart 8 Chapter 1 Product information ENWW Software for Windows Embedded Web server network models only Network models are equipped with an embedded Web server which provide
124. rtridge clears drive potential from the drum surface and cleans the transfer roller STBY standby From the end of the WAIT or LSTR period until either Prepares the product to receive print commands a print command is sent from the formatter or the power is turned off INTR initial From the time of the print command until the pickup Prepares the photosensitive drum for printing rotation solenoid is turned on 34 Chapter4 Operational theory ENWW ENWW Table 4 1 Sequence of operation continued Name Purpose PRINT From the end of the INTR period until the primary Forms the image on the photosensitive drum and high voltage is turned off transfers the toner image to the media LSTR last From the end of the PRINT period when high voltage Delivers the last page of a print job rotation is turned off until the main motor stops rotating After LSTR the product either returns to STBY or if another print command was sent from the formatter enters INTR Table 4 2 Power on sequence Step Action 1 Power on 2 CPU initialization 3 Start video interface communication 4 Check sensors for residual media 5 Main motor initial drive 6 Fuser heater initial drive The fuser heater reaches a surface temperature of 100 C 7 Laser scanner motor initial drive 8 High voltage control Detect presence of a print cartridge Clean the transfer roller after the primary charging AC bias is turned on 9 Failure abno
125. s 24 Chapter 3 Maintenance ENWW Replace supplies Print cartridge 1 Open the print cartridge door 2 Grasp the handle on the print cartridge and then pull the cartridge straight out to remove it See the recycling information inside the print cartridge box LA Qu ENWW Manage supplies 25 Remove the orange cover from the print cartridge and then pull the orange tab straight out to remove the sealing tape 4 D hee I ST lj 3j 5 6 A CAUTION Iftoner gets on any clothing wipe it off with a dry cloth and wash the clothing in cold water Hot water sets toner into the fabric HP policy on non HP supplies Hewlett Packard Company cannot recommend the use of non HP supplies either new or remanufactured Because they are not HP products HP cannot influence their design or control their quality Service or repairs required as a result of using a non HP supply will not be covered under the warranty 26 Chapter 3 Maintenance ENWW HP fraud hotline ENWW Call the HP fraud hotline if the product indicates that the print cartridge is not an HP print cartridge and you think that it is genuine HP will help determine if the product is genuine and take steps to resolve the problem The print cartridge might not be a genuine HP one if you notice the following issues e You are experiencing a large number of problems with the print cartridge e The print cartridge does not look
126. s in Windows 2000 you can also click Printing Preferences 4 Change the settings and then click OK For Windows XP 1 In the Windows system tray click Start click Control Panel and then click Printers and Faxes Right click the product icon Click Properties or click Printing Preferences o om Change the settings and then click OK 118 Chapter 6 Problem solve ENWW For Windows Vista 1 2 3 4 In the Windows system tray click Start click Control Panel and then click Printer Right click the product icon Click Properties or click Printing Preferences Change the settings and then click OK Identify and correct print defects Use the checklist and print quality issues charts in this section to solve print quality problems Print quality checklist ENWW General print quality problems can be solved by using the following checklist 1 Make sure that the paper or print media that you are using meets specifications Generally smoother paper provides better results If you are using a special print media such as labels transparencies glossy or letterhead ensure that you have printed by type Print a configuration page at the product control panel If the page does not print correctly the problem is with the hardware Contact HP See www hp com support LJM 1120 or the support flyer that came in the product box Print a demo page at the control panel If the page prints the problem is w
127. s access to information about device and network activities This information appears in a Web browser such as Microsoft Internet Explorer Netscape Navigator Apple Safari or Firefox The embedded Web server resides on the device It is not loaded on a network server The embedded Web server provides an interface to the device that anyone who has a network connected computer and a standard Web browser can use No special software is installed or configured but you must have a supported Web browser on your computer To gain access to the embedded Web server type the IP address for the device in the address line of the browser To find the IP address print a configuration page Status Alerts software The Status Alerts software provides information about the current status of the product The software also provides pop up alerts when certain events occur such as an empty tray or a problem with the product The alert includes information about solving the problem Other Windows components and utilities e Software installer automates the printing system installation e Online Web registration ENWW Software for Windows 9 Software for Macintosh Embedded Web server network models only Network models are equipped with an embedded Web server which provides access to information about device and network activities This information appears in a Web browser such as Microsoft Internet Explorer Netscape Navigator Apple Safari or F
128. s dnyoid 1s s eosr Fe Ex p ni T V T u E E yun 1esn i VOd JOSUaS EIP N ue e FE Di BEES BES sNsoq p Dz AL ary SNSMd lo De zOZSd LOZSd E awe Dr Josues Josuas G Z Husa f fo Ds upm eIpen Manap 18814 Lo zozr zssr tozr zs esn jeuuieu L Nov kdl torr LOLMS L etoole U91IMS JOMOd Hov 1 E z e e LH E Loir F Joisiuueu L Ezk LOSMS YoUMs yoou u HLWApZ auo cesr yest weet weet ans avo auo HOAS 1os os olsy oag auo Loaw Loan ans zogA zoaw avo rest yun 9A99 S JOSNA jayeay sasny 18 ZE 17 16 SE 15 14 EL 18 12 m 11 10 JeneuuoJ Problem solving diagrams 149 ENWW Firmware updates Firmware updates and installation instructions for this product are available at www hp com support LJM1120 Click Downloads and drivers click the operating system and then select the firmware download for the product 150 Chapter 6 Problem solve ENWW 7 Parts e Ordering information e Supplies and hinge tool e Cable and interface accessories e Whole unit replacement e Control panel overlays e Supplementry documentation and support e Parts lists and diagrams e Scanner ass
129. se the locking tab on the back of the cover Figure 5 38 Remove the side covers 2 of 4 T a 74 Chapter 5 Removal and replacement ENWW ENWW 3 Release the bottom tab callout 3 Figure 5 39 Remove the side covers 3 of 4 4 Slightly rotate the back side of the right cover away from the product and then slide it toward the front of the product to release it Figure 5 40 Remove the side covers 4 of 4 Product base 75 Print cartridge door 1 Remove the scanner assembly See Scanner assembly on page 60 2 Fully open the print cartridge door and gently pull downward on both print cartridge swing arms to release them In Figure 5 41 Remove the print cartridge door 1 of 2 on page 76 the left arm is disengaged A CAUTION Be careful when releasing the swing arms They can easily break Figure 5 41 Remove the print cartridge door 1 of 2 3 Rotate the door toward the back of the product and then lift it up and off of the product Figure 5 42 Remove the print cartridge door 2 of 2 76 Chapter 5 Removal and replacement ENWW Rear cover and fuser cover 1 Remove the right side and left side covers See Side covers on page 74 2 Remove one screw callout 1 Figure 5 43 Remove the rear cover and fuser cover 1 of 3 3 Release the two rear cover locking tabs callout 2 Rotate the bottom of the rear cover up and away from the product and then remove it Figure 5 44
130. sembly toward the front of the product until the link disengages from the scanner support frame can Figure 5 4 Remove the link assemblies and scanner support frame spring 2 of 4 C E Remove the link assembly Repeat these steps to remove the remaining link Figure 5 5 Remove the link assemblies and scanner support frame spring 3 of 4 54 Chapter 5 Removal and replacement ENWW 5 Use needle nose pliers to remove the scanner support frame spring Figure 5 6 Remove the link assemblies and scanner support frame spring 4 of 4 ENWW Scanner assembly 55 Scanner lid 1 Open the scanner lid Figure 5 7 Remove the scanner lid 1 of 2 2 Lift the scanner lid straight up to remove it from the scanner assembly A CAUTION Avoid touching the flatbed glass Skin oils and fingerprints can contaminate the glass and cause print quality problems Figure 5 8 Remove the scanner lid 2 of 2 56 Chapter5 Removal and replacement ENWW Control panel overlay Carefully pry the outside edge of the control panel overlay away from the product to remove it A CAUTION Be careful to not damage the overlay if it will be reinstalled after servicing the device XX TIP When installing a replacement control panel overlay you can dispose of the barcode part number portion of the replacement overlay Figure 5 9 Remove the control panel overlay ENWW Scanner assembly 57 Control panel
131. settings might be set Use the control panel Lighter Darker button incorrectly to change the contrast setting The original might have a colored Colored backgrounds might cause images in background the foreground to blend into the background or the background might appear in a different shade If possible use an original document without a colored background Vertical white or faded stripes The media might not meet Use media that meets HP specifications appear on the copy HP specifications The print cartridge might be defective Replace the print cartridge See Print Aa Cc cartridge on page 25 Aa Cc Aa Cc Aa Cc Aa Cc ENWW Copy problems 127 Problem Cause Solution Unwanted lines or dots appear on The flatbed scanner might be dirty the copy Bb Bb Bb Bb Bb Clean the flatbed scanner See Clean the flatbed scanner glass on page 28 The photosensitive drum inside the print cartridge might have been scratched Install a new HP print cartridge See Print cartridge on page 25 Black dots or streaks appear on the copy Ink glue correction fluid or an unwanted substance might be on the flatbed scanner Clean the flatbed scanner See Clean the flatbed scanner glass on page 28 The power to the product might have fluctuated Reprint the job Copies are too light or dark The printer driver or product software settings may be i
132. ssembly locking lever is in the down position NOTE When the shaft is reinstalled make sure that the locking levers and the cartridge door button mounted to the shaft near the right side locking lever are correctly positioned Verify that the locking lever tension springs are engaged in the slots in the chassis Figure 5 65 Remove the laser scanner 3 of 7 90 Chapter5 Removal and replacement ENWW 5 Lift the laser scanner cover up and out of the product to remove it amp NOTE When this cover is reinstalled make sure that the slots in the lower portion of the cover callout 4 one shown fit over the edge of the laser scanner mounting shelf so that the cover is secure and correctly fits inside the product Figure 5 66 Remove the laser scanner 4 of 7 6 Disconnect one FFC callout 5 A CAUTION Do not bend or fold the FFCs during the removal or reinstallation process Figure 5 67 Remove the laser scanner assembly 5 of 7 ENWW Product base 91 7 Remove four screws callout 6 NOTE These four screws are longer than most of the screws used in the product Do not get them mixed up with screws from previously removed components Figure 5 68 Remove the laser scanner assembly 6 of 7 AOO GREC T EXPOSURE TO LAM DANGER menti une rotate unas sgen 8 Carefully slide the laser scanner assembly away from the main motor PCA bracket and then disconnect one wire harness connec
133. st 131 photosensitive drum locating 38 physical specifications 186 pickup solenoid 144 pickup assembly diagrams 147 202 Index pickup roller replacing product 67 pickup roller locating 38 pickup feed delivery system main motor locating 42 operations 42 pickup solenoid locating 42 sensors locating 42 ports cables ordering 152 locating 6 141 types included 4 post service tests 51 power high voltage PCA 39 high voltage testing 133 requirements 186 sequence of operations 35 power consumption 186 power supplies remove 82 unplugging 48 power supply high voltage contacts check 133 power switch locating 5 pressure roller locating 38 print cartridge part number 152 toner removing from clothing 26 print cartridge area jams clearing 116 print cartridges door release locating 5 drum rotation test 131 high voltage contacts 133 HP fraud hotline 27 recycling 191 remove 65 replacing 25 status checking 24 storing 24 warranty 183 print defects troubleshooting 119 print media supported 12 print quality archive print setting 138 cleaning page printing 138 repetitive image defects 140 settings 118 troubleshooting print cartridge door remove 76 print quality test 51 printing configuration page 30 demo page 30 menu map 30 priority input tray jams clearing 112 loading 19 locating 5 product basic operation 34 cleaning 28 formatter replace 81 front cover remove 79 fuser cover remove 77 fuser replace
134. stration Description Size Part number Use Screw RS M3X6 XB2 8300 609CN Used to secure plastic to metal M3X8 XA9 1504 000CN M3X10 XA9 1501 000CN Screw D M3X6 XA9 1670 000CN Used to secure plastic to metal Screw w washer M3X6 XB2 7300 605CN Used to secure metal components to metal M3X8 XA9 1420 000CN components Screw tapping M4X10 XB4 5401 009CN Used to secure anything to plastic M3X9 0515 4671 Control panel to scanner 6mm 8mm 10mm 12mm M3 M4 ep Jp I 9 9 30 ENWW Parts lists and diagrams 163 Scanner assemblies Figure 7 1 Scanner assemblies 164 Chapter 7 Parts ENWW ENWW Table 7 6 Scanner assemblies Description Flatbed lid Control panel assembly LJm1120 Western Control panel assembly LJm1120 Asian SSA PKG FGI ASSY LJm1120 scanner flatbed assembly LJm1005 HP Jewel Part number CB537 60102 CB537 60109 CB537 60110 CB537 67901 7121 8285 Scanner assemblies 165 Assemblies Figure 7 2 Assemblies 166 Chapter 7 Parts ENWW ENWW Table 7 7 Assemblies Description Control panel overlay Scanner spring tension Scanner link assembly right Scanner link assembly left Paper delivery tray assembly Paper pickup tray assembly Formatter standard HP LaserJet M1120 Formatter Asian HP LaserJet M1120 Formatter standard HP LaserJet M1120n Formatter Asian HP LaserJet M1120n Part number See Control panel overlays 1 on pag
135. t Korea rot ede te terrebat eene soo od et noa enu ste aea sands 195 ENWW vii Laser statement for Finland iii aaa aa aa encens 196 substances table China ie ane T EE role spelen 196 viii ENWW List of tables Table 1 1 Table 1 2 Table 1 3 Table 1 4 Table 4 1 Table 4 2 Table 6 1 Table 6 2 Table 6 3 Table 6 4 Table 6 5 Table 6 6 Table 6 7 Table 6 8 Table 7 1 Table 7 2 Table 7 3 Table 7 4 Table 7 5 Table 7 6 Table 7 7 Table 7 8 Table 7 9 Table 7 10 Table 7 11 Table 7 12 Table 7 13 Table B 1 Table B 2 Table B 3 Table B 4 Table B 5 Table C 1 ENWW Product guides osiin ee OO A 2 Supported paper and print media sizes ecceeeeceeceeeeceeeceeecaeeeeeceeeeeeeeeeeeeeeeeeeeteeeeeeteeeeeeseeneaaeeas 12 Supported envelopes and postcards ceseecsecccecceecceeeeeeeeeeeeeeeeeeeeeeeeeeeteeeseesecseceseeeseesaeneaaeaees 12 Supported paper types and tray capacity ssssssssssssssseeeeeeeee rennes 13 Sequence Of Op ration ssl teu un DAI E nee AR RR RN Mad avesuaaanddaemnaaancane 34 Power on sequence 00 ccc cece cece cece eeeeee aaa aa aaa a nnn enn en ninh aia re rrt sels en sn nennen nennen nenne nente tennis 35 Repetitive Image defecls iioii enfant edet e dete ede dde ee DIL DR Reg du pad 140 Formatter connectors 142 ECU CONMCCIONS rrr eret tre sine etre RE master HER EH RE eee data aaa EE se Late lee REI a RENTRER een
136. t Clear the jam from the area indicated on the clear paper path trays product control panel and then follow the control panel instructions See Clear jams on page 111 Settings cleared The product has cleared job settings Re enter any appropriate job settings 108 Chapter6 Problem solve ENWW Critical error messages Critical error messages can indicate some kind of failure Turning off and then turning on the power might fix the problem If a critical error persists the product might require service Critical error message tables Control panel message Description Recommended action 50 1 Fuser Error The product has experienced an internal 1 Turn off the power by using the power hardware error switch and then wait at least 30 Turn off then on seconds 2 Ifa surge protector is being used remove it Plug the product directly into the wall socket 3 Turn on the power and wait for the product to initialize If the error persists contact HP See www hp com support LJM1120 or the support flyer that came in the product box 50 2 Fuser Error The product has experienced an internal Turn off the power by using the power switch hardware error wait at least 30 seconds and then turn on the Turn off then on power and wait for the product to initialize If a surge protector is being used remove it Plug the product directly into the wall socket Use the power switch to turn the product on If
137. t Height Depth Width Weight HP LaserJet M1120 308 mm 12 1 in 363 mm 14 3 in 437 mm 17 2 in 8 2 kg 18 7 Ib HP LaserJet M1120n 308 mm 12 1 in 363 mm 14 3 in 437 mm 17 2 in 8 2 kg 18 7 Ib Electrical specifications A CAUTION Power requirements are based on the country region where the product is sold Do not convert operating voltages This will damage the product and void the product warranty Table B 2 Electrical specifications Item 110 volt models 230 volt models Power requirements 110 to 127 V 1096 220 to 240 V 1096 50 60 Hz 2 Hz 50 60 Hz 2 Hz Rated current 4 9 A 2 9 Power consumption Table B 3 Power consumption average in watts Product model Printing Copying Ready Sleep Off HP LaserJet M1120 420W 420W 5W lt 0 1 W HP LaserJet M1120n 420 W 420 W 8W 0 1 W Values are based on preliminary data See www hp com support LJM 17120 for current information Power reported is highest values measured using all standard voltages Instant on fuser technology Recovery time from Ready Sleep to start of printing 6 seconds Maximum heat dissipation for all models in Ready mode 30 BTU hour N w 4 a 186 Appendix B Specifications ENWW Environmental specifications Table B 4 Environmental specifications Recommended Operating Storage Temperature 15 to 32 5 C 15 to 32 5 C 20 to 40 C 59 to 90 5 F 59 to 90
138. t before you tried to scan If someone sent a print job or copy job before you tried to scan the scan will start if the scanner is not busy However because the product and scanner share memory the scan might be slower Scan problems 125 Scan quality problems Prevent problems The following are a few simple steps you can take to improve copy and scan quality e Use high quality originals e Place the media on the flatbed glass correctly face down with the upper left corner of the document at the corner of the glass indicated by the icon Adjust the software settings according to how you plan to use the scanned page If your product frequently feeds more than one page at a time the separation pad might need to be replaced Contact HP See www hp com support LJM1120 or the support flyer that came in the product box Solve scan quality problems Use or make a carrier sheet to protect your originals Problem Cause Solution Blank pages The original might have been loaded upside On the flatbed scanner place the original down document face down with the upper left corner of the document at the corner of the glass indicated by the icon on the scanner Too light or dark The resolution and color levels may be set incorrectly Verify that you have the correct resolution and color settings Unwanted spots Ink glue correction fluid or an unwanted substance might be on the glass C
139. t cartridge 65 print cartridge door 76 ENWW rear cover 77 scanner assembly 60 scanner lid 56 scanner support frame 86 scanner support frame spring 53 side covers 74 transfer roller 73 repacking device 184 repetitive defects troubleshooting replace control panel 58 formatter 81 front cover 79 fuser 96 fuser cover 77 laser scanner assembly 89 link assemblies 53 main motor 93 media input tray 71 order of 52 paper pickup assembly 100 parts 48 52 power supply 82 print cartridges 65 print cartridge door 76 rear cover 77 scanner assembly 52 60 scanner lid 56 scanner support frame 86 scanner support frame spring 53 side covers 74 supplies life expectancies 24 transfer roller 73 replacing scanner cushions 70 supplies 25 reports configuration page 30 demo page 30 menu map 30 reports product configuration page 137 Demo page 137 resolution features 4 print settings 118 specifications 4 123 140 restoring factory set defaults 138 right side cover remove 74 roller delivery roller 38 pickup locating 38 rollers feed locating 38 locating 38 145 pickup replacing 67 pressure roller 38 repetitive image defects 140 transfer locating 38 transfer remove 73 S safety statements 195 196 scan image quality troubleshooting 124 scanner cushions installing 70 glass cleaning 28 lid remove 56 operations 36 remove 60 replace 52 support frame remove 86 support frame spring remove 53 scanner assembli
140. t you do not lose any of the springs or gears when the assembly is removed Figure 5 86 Remove the drive gear assembly and drive belt 3 of 4 4 Remove one gear callout 4 and then carefully slip the drive belt callout 5 off of the drive gear 4 TIP When you reinstall the main motor drive belt make sure that it is correctly positioned on top of the spring loaded tension idler and that it is not twisted the grooves in the belt should face inwards when the belt is correctly positioned Figure 5 87 Remove the Drive gear assembly and drive belt 4 of 4 104 Chapter 5 Removal and replacement ENWW 6 Problem solve ENWW Problem solving checklist Control panel messages Clear jams Print problems Scan problems Copy problems Functional checks Service mode functions Problem solving tools Problem solving diagrams Firmware updates 105 Problem solving checklist Follow these steps when trying to solve a problem with the product Step Verification step Possible problems Solutions number 1 Is the power on No power due to failed power source cable 1 Verify that the product is plugged in switch or fuse 2 Verify that the power cable is functional and that the power switch is on 3 Check the power source by plugging the product directly into the wall or into a different outlet 2 Does Ready appear in the Control panel shows an error See Control
141. te denied eae arae ean secas 17 What was in the BOX Ed toner Sete x tin i RR EE Rede ba ARER eon RAS RR ORE ERAN RR QN anna in REA AE d 18 Installinput devices EE 19 PrIOrItY INPUT TAY 42 20 Ra ee ed D dns net ec M tien te seed nee ne 19 TRAY sement E Mine ten Me Huet 20 oc 21 ENWW iii Install th print cartridge ico tpa inate dein addi Dc nancial danse 21 3 Maintenance Manage supplies C 24 Life expectancies of supplies ccccce cece eee eeeeececeeeaeee eee tenet eee eed tga eaeaaeaeeeeeeeeeeeeeeteeeenenenes 24 Check and order supplies sssssssssssssssssee ener emen nenne nennen nnns 24 erEedJ tce E 24 Replace SUppleS e a a aa A ENa 25 Prot CANINA e C 25 HP policy on non HP supplies ctt etude e Rn tiene aai aaa ia 26 HP fraud hotline HEERMMMIERMESMUT 27 Clean the proguet EUER 28 Clean the exterior see 28 Clean the flatbed scanner glass etiem nut rena ee ease BEER ene asa AR YER une 28 Clean the lid backing sise 28 Clean the paper path oerte tee the tne nhe nen ro eH Ee de ug Ld dun tact cence teens 29 Management tools usines 30 Information pages e ire 30 Embedded We b server tette etica td e RR AR RNV R RA aaa a naa a 30 Features Em 31 4 Operational theory sitiorem 34 Sequence of operation for the base unit
142. th an embedded Web server EWS which provides access to information about product and network activities A Web server provides an environment in which web programs may run much in the same way that an operating system such as Windows provides an environment for programs to run on a computer The output from these programs can then be displayed by a Web browser such as Microsoft Internet Explorer Safari or Netscape Navigator An embedded Web server resides on a hardware device such as an HP LaserJet product or in firmware rather than as software that is loaded on a network server The advantage of an EWS is that it provides an interface to the product that anyone with a network connected product and computer can use There is no special software to install or configure but you must have a supported Web browser on the computer To gain access to the EWS type the IP address for the product in the address line of the browser To find the IP address print a configuration page amp NOTE ForMacintosh operating systems you can use the EWS over a USB connection after installing the Macintosh software included with the product 30 Chapter 3 Maintenance ENWW Features ENWW The EWS allows you to view product and network status and manage printing functions from a computer With the EWS you can complete the following tasks View product status information Determine the remaining life on all supplies and order new ones Vie
143. the box e Install input devices e Install supplies 15 Site preparations Operating environment Place the product on a sturdy level surface in a well ventilated area Make sure that the air vents are not blocked and that the product is installed away from direct sunlight open flames and ammonia fumes ce o o h m 3 N N T S UL MW t 50 cm 20 inches 48 cm 19 inches Store or install the product in an area that meets the following requirements e Temperature printer operating 15 to 32 5 C 59 to 90 5 F e Temperature printer storage 20 to 60 C 4 to 140 F e X Humidity printer operating 10 to 80 relative humidity no condensation e Humidity printer storage 10 to 90 relative humidity no condensation e Temperature toner cartridge storage 20 to 40 C 4 to 104 F e X Humidity toner cartridge storage 10 to 90 relative humidity no condensation 16 Chapter2 Installation ENWW Minimum system requirements ENWW Windows 2000 Windows XP Windows Server 2003 Windows Vista Mac OS X v10 3 and later 128 MB RAM for Windows operating systems 32 MB RAM for Macintosh operating systems 250 MB hard disk space full installation CD ROM drive USB port Site preparations 17 What was in the box The following components are included in the box amp NOTE The USB and network cables are not
144. tor callout 7 Remove the laser scanner assembly Figure 5 69 Remove the laser scanner assembly 7 of 7 92 Chapter 5 Removal and replacement ENWW Main motor 1 Remove the following assemblies Scanner assembly See Scanner assembly on page 60 Formatter See Formatter on page 81 Right and left cover See Side covers on page 74 Print cartridge door See Print cartridge door on page 76 Rear cover and fuser cover See Rear cover and fuser cover on page 77 Front cover See Front cover on page 79 Scanner support frame See Scanner support frame on page 86 Laser scanner assembly See Laser scanner assembly on page 89 2 Remove one screw callout 1 and then carefully disconnect one wire harness connector callout 2 Figure 5 70 Remove the main motor 1 of 4 ENWW Product base 93 3 Carefully release two tabs callout 3 and separate the main motor PCA from the mounting bracket Figure 5 71 Remove the main motor 2 of 4 4 Remove the main motor wire harness from the retainers on the mounting bracket callout 4 Remove the bracket callout 5 Figure 5 72 Remove the main motor 3 of 4 94 Chapter 5 Removal and replacement ENWW ENWW Remove two screws callout 6 Carefully slip the main motor drive belt off of the motor shaft callout 7 and then remove the main motor Figure 5 73 Remove the main motor 4 of 4 xx TIP When the main motor is reinstalled make sure that
145. ty 127 copy size 130 copying 130 critical error messages 109 curled media 122 138 demo page 137 diagrams 140 dots copies 128 engine test page 131 faded print 120 half self test 132 ENWW heating element 133 image formation 132 information pages 137 jams 111 lines copies 128 lines printed pages 120 loose toner 121 menu map 137 NVRAM initialization 135 pages too dark 128 pages too light 128 print defects 119 print quality 118 repetitive defects 123 reports 137 scan quality 124 126 scan image quality 124 scanning 124 skewed pages 122 spots scans 126 text 122 toner scatter 123 tonersmear 121 toner specks 120 tools 137 wrinkles 123 U uninstall software 11 unplugging power cord 48 USB port locating 6 141 type included 4 User guide 2 user guides partnumbers 160 V vertical lines troubleshooting 120 vertical white or faded stripes 127 voltage requirements 186 W warning messages 108 warranty Customer self repair 182 extended 184 print cartridge 183 product 181 transfer unit and fuser 183 ENWW wavy paper troubleshooting 122 Web sites customer support 184 documentation 2 Macintosh customer support 184 Material Safety Data Sheet MSDS 192 weight 186 white or faded stripes troubleshooting 127 Windows drivers supported 7 software components 9 supported operating systems 7 system requirements 17 uninstall software 11 wrinkles troubleshooting 123 2008 Hewlett Pack
146. urements Table 6 1 Repetitive image defects Distance between identical Dirty or damaged roller Solution defects 26 7 mm 1 05 in Primary charging roller Replace the print cartridge 29 1 mm 1 14 in Developing cylinder Replace the print cartridge 39 3 mm 1 55 in Transfer roller Replace the transfer roller 56 2 mm 2 21 in Pressure roller Replace the fuser 56 5 mm 2 22 in Fuser film fuser sleeve Replace the fuser 140 Chapter 6 Problem solve ENWW Interface ports All models have a Hi Speed USB 2 0 port The HP LaserJet M1120n also has a 10 100 Base T RJ 45 network port 1 Hi Speed USB 2 0 port 2 Network port HP LaserJet M1120n only ENWW Problem solving diagrams 141 Formatter connectors Figure 6 3 Formatter connectors Table 6 2 Formatter connectors Item Description J8 High speed USB 2 0 port J10 Control panel J12 Scanner J14 24V from engine J17 ECU PCA J18 Network port 142 Chapter 6 Problem solve ENWW ECU connectors Figure 6 4 ECU connectors Table 6 3 ECU connectors Item Description J101 Fuser not shown J102 Power switch J501 Interlock J531 Formatter PCA communication 5v 3 3v GND J532 Formatter PCA communication 24v GND J542 Laser scanner J551 To
147. w and change part of the product configuration View and print some internal pages Select the language in which to display the EWS pages View and change network configuration Set change or clear the product security password NOTE Changing network settings in the EWS might disable some of product software or features Management tools 31 32 Chapter 3 Maintenance ENWW 4 Operational theory e Basic operation e Scanner functions and operation e Internal components base unit e Engine control system e Laser scanner system e Pickup feed delivery system e Image formation system ENWW Basic operation This chapter presents an overview of the relationships between major components in the product and includes a detailed discussion of the image formation system The following systems are discussed e Engine control system e Laser scanner system e Pickup feed delivery system e Image formation system Figure 4 1 System block diagram co LASER SCANNER SYSTEM ENGINE CONTROL SYSTEM qua IMAGE FORMATION SYSTEM gs PICKUP FEED DELIVERY SYSTEM ZN To external device computer through formatter Sequence of operation for the base unit Operational sequences are controlled by the microprocessor on the DC controller Table 4 1 Sequence of operation Name Timing Purpose WAIT From power on until the end of the main motor initial Detects the presence of a print ca
148. your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment For more information about where you can drop off your waste equipment for recycling please contact your local city office your household waste disposal service or the shop where you purchased the product Material Safety Data Sheet MSDS Material Safety Data Sheets MSDS for supplies containing chemical substances for example toner can be obtained by contacting the HP Web site at www hp com go msds or www hp com hpinfo globalcitizenship environment For more information To obtain information about these environmental topics e Product environmental profile sheet for this and many related HP products e HP s commitment to the environment e HP s environmental management system 192 Appendix C Regulatory information ENWW e HP s end of life product return and recycling program e Material Safety Data Sheets Visit www hp com go environment or www hp com hpinfo globalcitizenship environment index html ENWW Environmental product stewardship program 193 Declaration of conformity Declaration of Conformity according to ISO IEC 17050 1 and EN

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