Manuale d’uso / di manutenzione del prodotto LaserJet 2420n del fabbricante HP
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HP LaserJet 2400 Series printer Service Manual.
Copyright information © 2004 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.
Table of contents 1 Product Information Chapter contents............................................................................................................... ......... 1 Printer configurations.................... ............................
Control-panel layout................ ................ ........................ ............ ................ ............ ..........3 1 Control-panel buttons.......... ........................... . ................... ......................... .......
Internal components.............. .............. ................ .............................. ................. .............. ... .....63 Timing........................... .......................... ........................ .......................
Troubleshooting tree.................... ................. ... ................ ....... ............................. ............... ...143 Troubleshooting flowchart ....................................................................................
Wrinkles or creases ..................................... ........................... .. .............. ........................209 Vertical white lines ..................................................................................................
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List of tables Table 1-1. Feature designations for HP LaserJet 2400 Series printers.......... .......... ..........2 Table 1-2. Speed ............................................................................................................... .4 Table 1-3.
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List of figures Figure 1-1. HP LaserJet 2400 Series printer base model, front/right-side view.. ... ... .... ... ...2 Figure 1-2. HP LaserJet 2400 Series printer base model, right-side/rear view ................... 3 Figure 3-1. Location of the control panel.
Figure 6-28. Removing the right-side handle (2 of 2)......................................................... 107 Figure 6-29. Removing the ECU (1 of 6)............................................................................ 108 Figure 6-30. Removing the ECU (2 of 6).
1 Product Information Chapter contents Chapter contents............................................................................................................... ......... 1 Printer configurations.................... .............................
Printer configurations The HP LaserJet 2400 Series printer is available in several configurations. The letters that follow the printer name indicate the differences between the configurations. Each letter refers to a specific feature. Use the information in this section to determine which features your model has.
8 9 10 Figure 1-2. HP LaserJet 2400 Series printer base model, right-side/rear view 8 On/off switch 9 Interface ports 10 Rear output bin ENWW Printer configurations 3.
Features The following tables describe the features of HP LaserJet 2400 Series printers. Table 1-2. Speed HP LaserJet 2410 printer HP LaserJet 2420 Series printer HP LaserJet 2430 Series printer Prints on letter-size paper at 25 pages per minute (ppm).
Table 1-5. Memory and processor HP LaserJet 2410 printer HP LaserJet 2420 Series printer HP LaserJet 2430 Series printer Includes 32 MB of RAM. Expandable up to 288 MB maximum memory. 400-MHz processor speed. The HP LaserJet 2420 printer includes 32 MB of RAM, expandable to 288 MB maximum memory.
Table 1-8. Print cartridge HP LaserJet 2410 printer HP LaserJet 2420 Series printer HP LaserJet 2430 Series printer The standard print cartridge prints up to 6,000 pages. "Extended life" print cartridges print up to 12,000 pages. The HP smart-printing-supplies program automatically alerts when toner is low.
Table 1-11. Accessibility HP LaserJet 2410 printer HP LaserJet 2420 Series printer HP LaserJet 2430 Series printer The online user guide is compatible with text screen- readers. The print cartridge can be inserted and removed by using one hand. All doors and covers can be opened by using one hand.
Specifications Physical specifications Table 1-12. Product dimensions Product Height Depth Width Weight 1 HP LaserJet 2410, 2420, 2420d, 2420n, and 2420dn 260 mm (10.2 inches) 400 mm (15.7 inches) 425 mm (16.7 inches) 15.2 kg (33.5 lb) HP LaserJet 2430t, 2430tn, and 2430dtn 400 mm (15.
Electrical specifications WARNING! Power requirements are based on the country/region where the printer is sold. Do not convert operating voltages. This can damage the printer and void the product warranty.
Acoustic emissions Table 1-16. Sound power and pressure level 1 (HP LaserJet 2400 series) Sound power level Declared per ISO 9296 Printing 2 (HP LaserJet 2410) L WA d = 6.6 Bels (A) [66 dB(A)] Printing 2 (HP LaserJet 2420) L WA d = 6.7 Bels (A) [67 dB(A)] Printing 2 (HP LaserJet 2430) L WA d = 6.
Media specifications The printer accepts a variety of media, such as cut-sheet paper, including up to 100% recycled fiber content paper; envelopes; labels; transparencies; and custom-size paper. Properties such as weight, composition, grain, and moisture content are important factors that affect printer performance and output quality.
Tray 2 (250-sheet tray) and tray 3 (500-sheet tray) Dimensions 1 Weight Capacity 2 Letter 216 x 279 mm (8.5 x 11 inches) 60 to 120 g/m 2 (16 to 32 lb) 250 sheets of 75 g/m 2 (20 lb) media A4 210 x 297 mm (8.3 x 11.7 inches) Executive 191 x 267 mm (7.3 x 10.
Category Specifications Acid content 5.5 pH to 8.0 pH Caliper 0.094 to 0.18 mm (3.0 to 7.0 mils) Curl in ream Flat within 5 mm (0.02 inch) Cut edge conditions Cut with sharp blades with no visible fray Fusing compatibility Must not scorch, melt, offset, or release hazardous emissions when heated to 200°C (392°F) for 0.
Envelopes Envelope construction is critical. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer.
Envelope margins The following gives typical address margins for a commercial #10 or DL envelope. Type of address Top margin Left margin Return address 15 mm (0.6 inch) 15 mm (0.6 inch) Delivery address 51 mm (2 inches) 89 mm (3.5 inches) NOTE For the best print quality, position margins no closer than 15 mm (0.
Hewlett-Packard limited warranty statement HP PRODUCT HP LaserJet 2410, 2420, and 2430 series DURATION OF LIMITED WARRANTY 1 year, Return to Authorized Service Center HP warrants to you, the end-user .
Print Cartridge Limited Warranty Statement This HP Print Cartridge is warranted to be free from defects in materials and workmanship. This warranty does not apply to print cartridges that (a) have bee.
HP LaserJet printing supplies In many countries/regions, this product's printing supplies (for example, print cartridge and fuser) can be returned to HP through the HP Printing Supplies Environmental Program. An easy-to-use and free take back program is available in more than 30 countries/regions.
Declaration of conformity Declaration of Conformity according to ISO/IEC Guide 22 and EN 45014 Manufacturer's Name: Hewlett-Packard Company Manufacturer's Address: 11311 Chinden Boulevard Bo.
Country-/region-specific safety statements Laser safety statement 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.
Finnish laser statement LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT HP LaserJet 2410, 2420, and 2430 series -laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle.
22 Chapter 1 Product Information ENWW.
2 Installation Chapter contents Chapter contents............................................................................................................... ....... 23 Operating environment ................... .................. ...................
Operating environment Place the printer on a sturdy, level surface in a well-ventilated area that meets the following environmental requirements: ● Temperature: 15° to 32.
Software The printer comes with helpful software, including printer drivers and optional software. For easy printer setup and access to the full range of printer features, HP recommends that you install the software that is provided. Check the installation notes and Readme files on the printer CD-ROM for additional software and languages.
Printer drivers Printer drivers provide access to the printer features and allow the computer to communicate with the printer (by using a printer language). Check the install notes, Readme, and late- breaking Readme files on the printer CD-ROM for additional software and languages.
Software for Macintosh computers The HP installer provides PostScript Printer Description (PPD) files, Printer Dialog Extensions (PDEs), and the HP LaserJet Utility for use with Macintosh computers. The embedded Web server can be used with Macintosh computers if the printer is connected to a network.
28 Chapter 2 Installation ENWW.
3 Operation Chapter contents Chapter contents............................................................................................................... ....... 29 Control panel......................................................................
Print-cartridge authentication ...... ............. ................ ................. .................. ..................... .53 Print-cartridge storage ...............................................................................................
Control panel This section provides information about the control panel and its features. The control panel is located on the top of the printer. ? Menu Stop Attention Data Ready Figure 3-1. Location of the control panel Control-panel layout ? Menu Stop Attention Data Ready 1 2 3 4 5 6 7 8 9 10 11 Figure 3-2.
Control-panel buttons Button Function ( H ELP ) ● Provides information about the message on the graphical display. ( B ACK ) ● Backs up one level in the menu tree or backs up one numeric entry. ● Exits menus if held down for more than 1 second. M ENU ● Opens and closes the menus.
Control-panel lights Light State Indication Ready On The printer is online and ready to accept data to print. Off The printer cannot accept data because it is offline (paused) or has experienced an error. Blinking The printer is going offline. The printer stops processing the current print job and expels all of the active pages from the paper path.
Control-panel language If LANGUAGE appears in English on the control panel, use the following procedure. Otherwise, turn the printer off, and then turn the printer on again.
Selecting which tray is used for printing You can select how the printer pulls media from the trays. The following sections provide information about configuring the printer to pull media from specific trays.
Customizing tray 1 operation The printer can be set to print from tray 1 if it is loaded, or to print only from tray 1 if the type of media that is loaded is specifically requested. See the user guide. Setting Explanation TRAY 1 SIZE=ANY TRAY 1 TYPE=ANY The printer usually pulls media from tray 1 first unless tray 1 is empty or closed.
Printing by type and size of media (locking trays) Printing by type and size is a way to be sure that print jobs always print on the media that you want. You can configure the trays for the type, such as plain or letterhead, and size, such as letter or A4, that is loaded in them.
Feeding media from tray 1 manually The manual feed feature is another way of printing on special media from tray 1. Setting MANUAL FEED to ON either in the printer driver or at the printer control panel stops the printer after each job is sent, allowing you time to load special paper or other print media in tray 1.
Selecting the correct fuser mode The printer automatically adjusts the fuser mode based on the media type to which the tray is set. For example, heavy paper, such as card stock, might need a higher fu.
Using the embedded Web server Use the embedded Web server (EWS) to view printer and network status and to manage printing functions from your computer instead of from the printer control panel. The following are examples of what you can do using the embedded Web server: ● View printer-control status information.
Information tab The Information pages group consists of the following pages. ● Device Status . This page shows the printer status and shows the life remaining of HP supplies, with 0% representing that a supply is empty. The page also shows the type and size of print media set for each tray.
Networking tab The network administrator can use this tab to control network-related settings for the printer when it is connected to an IP-based network. This tab will not appear if the printer is directly connected to a computer, or if the printer is connected to a network with anything other than an HP Jetdirect print server.
Using HP Web Jetadmin software HP Web Jetadmin is a Web-based software solution for remotely installing, monitoring, and troubleshooting network-connected peripherals. The intuitive browser interface simplifies cross-platform management of a wide range of devices, including HP and non-HP printers.
Using the HP Toolbox HP Toolbox is a Web application that you can use for the following tasks: ● Check the printer status. ● Configure the printer settings.
To view the HP Toolbox 1. Open the HP Toolbox in one of these ways: ● On the Windows desktop, double-click the HP Toolbox icon. ● From the Windows Start menu, click Programs , and then click HP Toolbox . ● For Macintosh OS X, on the hard drive, click Applications , and then click the Utilitites folder.
Troubleshooting tab The Troubleshooting tab has links to the following main pages: ● Print Quality Tools . View general troubleshooting information, view information about troubleshooting print-quality problems, and calibrate the printer to maintain color print quality.
Documentation tab The Documentation tab contains links to these information sources: ● Install Notes . Provides specific installation instructions and information regarding your product before you install and use the printing system. ● User Guide .
Uninstalling the HP Toolbox This section explains how to uninstall the HP Toolbox. To uninstall the HP Toolbox by using the Windows desktop shortcut 1. From the Start menu point to Programs , point to HP LaserJet 2400 series, and then click Uninstall hp LaserJet toolbox .
Configuration page Use the configuration page to view current printer settings, to help troubleshoot printer problems, or to verify installation of optional accessories, such as memory (DIMMs), trays, and printer languages. NOTE If an HP Jetdirect print server is installed, an HP Jetdirect configuration page prints as well.
2 Installed Personalities and Options Lists all printer languages that are installed (such as PS and PCL) and lists options that are installed in each DIMM slot and EIO slot. 3 Memory Lists printer memory, PCL Driver Work Space (DWS), and resource saving information.
Supplies status page Use the supplies status page to obtain information about the print cartridge that is installed in the printer, the remaining print-cartridge life, and the number of pages and jobs that have been processed. NOTE You can also obtain configuration information in the embedded Web server or the HP Toolbox.
PS or PCL font list Use the font lists to see which fonts are currently installed in the printer. The font lists also show which fonts are resident on an optional hard disk accessory or flash DIMM. To print a PS or PCL font list 1. Press ( S ELECT button) to open the menus.
Managing the print cartridge This section provides information about HP print cartridges, their life expectancies, how to store them, and how to identify genuine HP supplies.
Print-cartridge life expectancy The life of the print cartridge depends on the amount of toner that print jobs require and the length of life for the components inside the cartridge. When printing text at 5% coverage (typical for a business letter), the HP print cartridge lasts an average of 6,000 (Q6511A) or 12,000 (Q6511X) pages.
Cartridge-low and cartridge-out conditions The printer alerts you if the print cartridge is low on toner or out of toner. When the cartridge is low on toner or drum life When the cartridge is low, the printer control panel shows the ORDER CARTRIDGE message.
56 Chapter 3 Operation ENWW.
4 Maintenance Chapter contents Chapter contents............................................................................................................... ....... 57 Cleaning the printer ............................................................
Cleaning the printer Over time, particles of toner and paper accumulate inside the printer. This can cause print- quality problems during printing. Cleaning the printer eliminates or reduces these problems. Clean the paper path and print-cartridge areas every time that you change the print cartridge or whenever print-quality problems occur.
4. With a dry, lint-free cloth, wipe any residue from the paper path area and the print cartridge cavity. 5. Reinstall the print cartridge and close the top cover.
Cleaning the fuser Run the printer cleaning page to keep the fuser free of toner and paper particles that can sometimes accumulate. Accumulation of toner and particles can cause specks to appear on the front or back side of your print jobs.
5 Theory of operation Chapter contents Chapter contents............................................................................................................... ....... 61 Introduction............. .................... .............. ...........
Introduction This chapter presents an overview of the relationships among major components in the printer, and includes a detailed discussion of the image-formation system. The following systems are discussed: ● Engine control system ● Laser/scanner system ● Pickup/feed/delivery system ● Image-formation system Figure 5-1.
Internal components Figure 5-2. Cross-section of printer highlights the major internal components. Figure 5-2. Cross-section of printer 1 Top output-bin delivery roller 2 Fuser film 3 Laser/scanner 4 .
Timing Sequence of operation The microprocessor on the dc controller controls the printer operation sequences. Table 5-1. Operation sequences describes engine operations for each period of a print operation. Table 5-2. Power-on sequence describes each step of the power-on sequence.
Step Action 9 High-voltage control Detection of the presence of a print cartridge Cleaning of the transfer roller after the primary charging ac bias is turned on 10 Failure/abnormality check: detection of laser/scanner failure, fuser failure, and open covers 11 Communication with the memory tag Table 5-2.
Engine control system The engine control system coordinates all printer functions, according to commands that the formatter sends. It drives the laser/scanner system, the image formation system, and the pickup/feed/delivery system. The engine control system contains the following components: ● Dc controller ● High-voltage PCA Figure 5-3.
Figure 5-4. Engine control system circuit diagram ENWW Engine control system 67.
Laser/scanner system The laser/scanner system receives video signals from the dc controller and the formatter and converts the signals into latent images on the photosensitive drum.
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-detection sensors detect media as it passes through the printer.
● SR1, top output-bin delivery flag ● SR2, fuser-delivery flag Figure 5-6. Pickup/feed/delivery system 70 Chapter 5 Theory of operation ENWW.
Image-formation system Laser printing requires the interaction of several different technologies, including electronics, optics, and electrophotographics, to provide a printed page. Figure 5-7. Print cartridge diagram Each process functions independently and must be coordinated with the other printer processes.
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 5-9. Primary charging Step 2: Laser beam exposure The laser beam scans the photosensitive drum to neutralize negative charges on parts of the drum.
Step 3: Developing The developing cylinder comes in contact with the photosensitive drum to deposit toner onto the electrostatic latent image. NOTE The charges on the exposed area of the drum are shown as positive in Figure 5-10. Developing . The charges are actually negative, but they are more positive than the charges on the developing cylinder.
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.
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 5-14.
Print cartridge memory system The memory tag is a nonvolatile memory built into the print cartridge. The cartridge usage condition is detected as the engine controller reads or writes the data stored on the memory tag. The engine controller renews the information in the prescribed timing and reads or writes it from or to the memory tag.
6 Removal and replacement Chapter contents Chapter contents............................................................................................................... ....... 77 Introduction ............ ..................... .....................
Introduction This chapter documents removal and replacement of field replaceable units (FRUs) only. Removal and replacement strategy Replace parts in the reverse order of their removal. Directions for difficult or critical replacement procedures are included.
Before performing service Follow the pre-service procedures before you perform service. Pre-service procedures 1. Remove all media from the product. 2. Place the product on an ESD mat. If an ESD mat or an ESD-protected workstation is not available, discharge body static and ground the product chassis before servicing the product.
Parts removal order Use the following diagram to determine which parts must be removed before removing other parts. T ransfer roller Print car tridge Tr a y 2 T ray 2 pickup roller Separation pad Righ.
Covers Not all covers have to be removed to get to various FRUs. See Parts removal order if you are unsure about which covers must be removed. Right-side cover 1. Slide the right-side cover toward the back of the printer to disengage it from the front, right cover and the right-side handle.
Back cover 1. Open the face-up delivery door all the way, and then press the door down to disengage two door-stops (callout 1). 2. Remove two screws (callout 2). 2 1 Figure 6-3. Removing the back cover (1 of 3) 3. Close the face-up delivery door, and then tip the printer so that it rests on its front.
4. Open the "legal-size" cover (callout 3), and then disengage one tab (callout 4). 3 4 Figure 6-4. Removing the back cover (2 of 3) ENWW Covers 83.
5. Lift the bottom of the cover first, and then lift the cover away from the printer. Figure 6-5. Removing the back cover (3 of 3) 6. Tip the printer back so that it rests on its feet.
I/O cover 1. Rotate the I/O cover to clear tabs at the right side of the cover. Figure 6-6. Removing the I/O cover 2. Lift the cover off of the printer.
Left-side cover 1. Remove two screws (callout 1). Figure 6-7. Removing the left-side cover (1 of 2) 2. Open the cartridge door. 86 Chapter 6 Removal and replacement ENWW.
3. Release one tab (callout 2) at the back of the printer by pressing the tab through a hole in the chassis, and then rotate the cover away from the printer at the back of the printer.
Top, right cover 1. Remove one screw (callout 1) at the back of the printer. Figure 6-9. Removing the top, right cover 2. Lift the cover off of the printer.
Top cover 1. Remove four screws (callout 1). 2. Lift the cover at the back of the printer, and then slide the cover toward the front of the printer to clear the tabs (callout 2) at the front of the cover. 1 2 Figure 6-10. Removing the top cover 3. Lift the cover off of the printer.
Front, right cover 1. Remove two screws (callout 1). Figure 6-11. Removing the front, right cover (1 of 2) 90 Chapter 6 Removal and replacement ENWW.
2. Release one tab (callout 2) at the back of the cover, and then rotate the cover to clear two tabs (callout 3) at the front of the printer. 3 2 Figure 6-12.
Control panel 1. Remove all of the covers (see Covers ). 2. Disconnect one cable (callout 1). 3. Remove two screws (callout 2). Figure 6-13. Removing the control panel 4.
Reinstallation tip To make sure that the control panel is reinstalled correctly, use the locator pin (callout 1) and place the sheet metal front of the control panel assembly (callout 2) in front of the printer chassis.
Formatter 1. Remove the right-side cover (see Right-side cover ). 2. Open the formatter cover, and then lift the cover off of the hinges (callout 1) at the back of the cover. Figure 6-15. Removing the formatter (1 of 4) 3. Disconnect three cables (callout 2).
4. Remove two screws (callout 3). Figure 6-16. Removing the formatter (2 of 4) ENWW Formatter 95.
5. Rotate the formatter slightly at the back of the printer, and then slide the formatter toward the back of the printer to clear two tabs (callout 4) at the front of the formatter.
6. Remove five screws (callout 5), and then lift the formatter off of the formatter plate. Figure 6-18. Removing the formatter (4 of 4) ENWW Formatter 97.
Fuser 1. Remove the back cover (see Back cover ) and the I/O cover (see I/O cover ). 2. Remove the fuser-cable cover by releasing one tab (callout 1) on the cover, and then rotating the back of the cover toward the center of the printer.
3. Remove the duplexer inlet guide by releasing two tabs (callout 2) on the guide, and then sliding the guide toward the back of the printer. Figure 6-20. Removing the fuser (2 of 5) Reinstallation tip Make sure that both tabs snap back into place when reinstalling the duplexer inlet guide.
5. Disconnect the fuser cable at the right side of the printer (callout 4). Figure 6-21. Removing the fuser (3 of 5) 100 Chapter 6 Removal and replacement ENWW.
6. Remove four screws (callout 5). Figure 6-22. Removing the fuser (4 of 5) ENWW Fuser 101.
7. Tilt the fuser slightly toward the back of the printer, and then slide the fuser out of the back of the printer. Figure 6-23. Removing the fuser (5 of 5) 102 Chapter 6 Removal and replacement ENWW.
Laser/scanner 1. Remove the back cover (see Back cover ), the I/O cover (see I/O cover ), the left-side cover (see Left-side cover ), the top, right cover (see Top, right cover ), and the top cover (see Top cover ). 2. Release one tab (callout 1) on the air duct, and then lift the air duct out of the printer.
4. Remove four screws (callout 3). Figure 6-25. Removing the laser/scanner (2 of 3) 5. Lift the laser/scanner out of the printer. 104 Chapter 6 Removal and replacement ENWW.
6. To remove the laser/scanner PCA, remove two screws (callout 4), and then lift the PCA off of the laser/scanner. Figure 6-26. Removing the laser/scanner (3 of 3) ENWW Laser/scanner 105.
Right-side handle 1. Remove the right-side cover (see Right-side cover ). 2. Remove the formatter (see Formatter ). 3. Remove two screws (callout 1). Figure 6-27.
4. Slide the handle toward the back of the printer until the power-switch (callout 2) is adjacent to the hole in the printer chassis. Figure 6-28. Removing the right-side handle (2 of 2) 5. Rotate the handle so that the power-switch clears the hole, and then lift the handle away from the printer.
ECU 1. Remove all of the covers (see Covers ). 2. Remove the control panel (see Control panel ). 3. Remove the formatter (see Formatter ). 4. Remove the right-side handle (see Right-side handle ). 5. Disconnect the fuser cable (see callout 4 in Figure 6-21.
8. Lift the cartridge-door switch (callout 3) from its mounting. Figure 6-30. Removing the ECU (2 of 6) 9. Disconnect the laser/scanner cable (callout 4).
10. Remove four screws (callout 5): two screws on the top and two screws on the side, at the bottom, of the ECU pan. Figure 6-31. Removing the ECU (3 of 6) 110 Chapter 6 Removal and replacement ENWW.
11. Remove three screws (callout 6) from the back of the ECU pan. Figure 6-32. Removing the ECU (4 of 6) ENWW ECU 111.
12. Rotate the top of the ECU pan away from the printer, and then disconnect one flat, flexible cable (callout 7). Figure 6-33. Removing the ECU (5 of 6) 112 Chapter 6 Removal and replacement ENWW.
13. Lay the ECU pan down on the work surface, and then disconnect three cables (callout 8). Figure 6-34. Removing the ECU (6 of 6) NOTE The ECU and the ECU pan together are a single field-replaceable unit (FRU). You do not have to separate the ECU and the ECU pan.
Access plate 1. Remove the back cover (see Back cover ), the I/O cover (see I/O cover ), and the duplexer inlet guide (see Figure 6-20. Removing the fuser (2 of 5) ). 2. Press the green lever in the tray 2 cavity to release the access plate at the front of the printer.
Power supply 1. Remove all of the covers (see Covers ). 2. Remove the control panel (see Control panel ). 3. Remove the formatter (see Formatter ). 4. Remove the right handle (see Right-side handle ). 5. Remove the ECU (see ECU ). 6. Remove the duplexer pan (see Access plate ).
9. Remove the two screws (callout 2) that secure the spacer to the printer, and then lift the spacer out of the printer. Figure 6-37. Removing the power supply (2 of 5) 10.
11. Remove five screws (callout 3) from the power-supply pan. Figure 6-38. Removing the power supply (3 of 5) 12. At the left side of the printer, disconnect one cable (callout 4), and then thread the cable through the hole in the printer chassis.
13. Remove two screws (callout 5). Figure 6-39. Removing the power supply (4 of 5) 118 Chapter 6 Removal and replacement ENWW.
14. Lift the power-supply pan, and then disconnect one cable (callout 6). Figure 6-40. Removing the power supply (5 of 5) NOTE The power supply and the power-supply pan together are a single FRU. You do not have to separate the power supply and the power-supply pan.
Gear assembly 1. Remove all of the covers (see Covers ). 2. Remove the control panel (see Control panel ). 3. Remove the formatter (see Formatter ). 4.
8. Remove the two screws (callout 2) that secure the air duct to the printer chassis. Figure 6-42. Removing the gear assembly (2 of 6) 9. Unwind the cables from the cable-stays on the air duct, and then lift the air duct away from the printer. Reinstallation tip Open the cartridge door before reinstalling the air duct.
10. Remove four screws (callout 3) from the gear-assembly plate. 3 4 Figure 6-43. Removing the gear assembly (3 of 6) 11. Pull the gear assembly straight away from the printer. NOTE The spring (callout 1 in Figure 6-44. Reinstalling the gear assembly ) is not attached to the gear-assembly plate or to the large gear.
Reinstallation tip Use the rod (callout 2 in Figure 6-44. Reinstalling the gear assembly ) on the gear-assembly plate as a locator to find the correct positioning of the gear assembly. Insert the rod into the hole in the lower gear on the printer chassis.
Tray 1 solenoid 1. Remove all of the covers (see Covers ). 2. Remove the control panel (see Control panel ). 3. Remove the formatter (see Formatter ). 4. Remove the right-side handle (see Right-side handle ). 5. Remove the ECU (see ECU ). 6. Remove the right-side fan (see Figure 6-41.
Tray 2 solenoid 1. Remove all of the covers (see Covers ). 2. Remove the control panel (see Control panel ). 3. Remove the formatter (see Formatter ). 4. Remove the right-side handle (see Right-side handle ). 5. Remove the ECU (see ECU ). 6. Remove the gear assembly (see Gear assembly ).
E-label reader (memory tag) 1. Remove the right-side cover (see Right-side cover ), the back cover (see Back cover ), the I/O cover (see I/O cover ), the left-side cover (see Left-side cover ), the top, right cover (see Top, right cover ), and the top cover (see Top cover ).
3. Remove one screw (callout 2). Figure 6-48. Removing the e-label reader (2 of 2) 4. Lift the e-label reader out of the printer. ENWW E-label reader (memory tag) 127.
Face-down-roller shaft 1. Remove the right-side cover (see Right-side cover ), the back cover (see Back cover ), the I/O cover (see I/O cover ), the left-side cover (see Left-side cover ), the top, right cover (see Top, right cover ), and the top cover (see Top cover ).
3. Lift the end at the right side of the printer, and then slide the shaft toward the right side to clear the hole on the left side of the printer chassis.
Cartridge door 1. Remove the back cover (see Back cover ), the I/O cover and the left-side cover (see Left- side cover ). 2. With the cartridge door closed, unhook the spring (callout 1) at the printer chassis. 3. Remove one screw (callout 2) Figure 6-51.
4. Open the cartridge door, and then use a flatblade screwdriver to release the cartridge- door arm (callout 2) at the right side of the cartridge door.
5. Slide the cartridge door to the left, off of the hinges (callout 3). Figure 6-53. Removing the cartridge door (3 of 3) 132 Chapter 6 Removal and replacement ENWW.
Transfer roller 1. Release the left end of the transfer roller by using needle-nose pliers to pinch two tabs at the left end of the transfer roller. Figure 6-54. Removing the transfer roller 2. Use the needle-nose pliers in the same manner to release the other end.
Registration assembly 1. Remove the back cover (see Back cover ), the I/O cover and the left-side cover (see Left- side cover ). 2. Pinch the tab on the registration assembly gear (callout 1), and then slide the gear off of the shaft.
3. Remove two screws (callout 2) from the registration-assembly cover, and then lift the cover out of the printer. Figure 6-56. Removing the registration assembly (2 of 3) ENWW Registration assembly 1.
4. Remove four screws (callout 3). Figure 6-57. Removing the registration assembly (3 of 3) 5. Lift the registration assembly out of the printer. 136 Chapter 6 Removal and replacement ENWW.
Tray 1 pickup roller 1. Spread the pickup-roller locks (callout 1) on each side of the tray 1 pickup roller to release the roller. Figure 6-58. Removing the tray 1 pickup roller 2. Rotate the top of the roller off of the shaft, and then lift the roller out of the printer.
Tray 2 pickup roller NOTE Also follow these instructions to remove any optional-tray pickup rollers. 1. Rotate the bushings (callout 1) on each side of the roller. Figure 6-59. Removing the tray 2 pickup roller (1 of 2) 2. Remove the left-side bushing by sliding the bushing to the left.
4. Slide the roller and shaft toward the right and lift the roller and shaft together out of the printer. Figure 6-60. Removing the tray 2 pickup roller (2 of 2) ENWW Tray 2 pickup roller 139.
Separation pad NOTE To replace a separation pad, replace the entire separation-pad assembly. 1. Pull the tray out of the printer. 2. Remove two screws (callout 1) from the separation-pad assembly. Figure 6-61. Removing the separation pad 3. Lift the assembly out of the tray.
7 Troubleshooting Chapter contents Chapter contents............................................................................................................... ..... 141 Troubleshooting tree.................... ................. ... ...............
Correcting print-quality problems .......................................................................................... 201 Print-quality checklist ..................................................................................................
Troubleshooting tree Figure 7-1. Basic troubleshooting is a graphical representation of the troubleshooting process. Figure 7-1. Basic troubleshooting ENWW Troubleshooting tree 143.
Troubleshooting flowchart If the printer is not responding correctly, use the flowchart to determine the problem. If the printer does not pass a step, follow the corresponding troubleshooting suggestions. NOTE Macintosh users : For more troubleshooting information, see Troubleshooting common Macintosh problems .
2. Can you print a configuration page? (See Configuration page .) YES Go to step 3. NO A configuration page does not print. ● Verify that all trays are correctly loaded, adjusted, and installed in the printer. ● By using the computer, check the print queue or print spooler to see if the printer has been paused.
3. Can you print from a program? YES Go to step 4. NO The job will not print. ● If the job will not print, and a message appears on the control-panel display, see Table 7-8. Interpreting control-panel messages . ● By using the computer, check to see if the printer has been paused.
4. Does the job print as expected? YES Go to step 5. NO Print is garbled, or only a portion of the page prints. ● Make sure that you are using the correct printer driver. (See the user guide.) ● The data file that was sent to the printer might be corrupt.
5. Does the printer select the correct trays? YES For other problems, check the Contents, the Index, or the printer-driver online Help. NO The printer pulls media from the wrong tray. ● Make sure that you have selected the correct tray. (See the user guide.
Troubleshooting tools Press the S ELECT ( ) button to open the menus. Use the U P A RROW ( ) button or the D OWN A RROW ( ) button to scroll through the menus that appear. The high-level menus appear in the following order: ● RETRIEVE JOB ● INFORMATION ● PAPER HANDLING ● CONFIGURE DEVICE ● DIAGNOSTICS ● SERVICE Information pages 1.
5. Press the S ELECT ( ) button to select and print the selected information page. The informational pages for the printer are also available in the embedded Web server. Not all information pages are discussed in detail in this manual. For more information, see the electronic user guide on the device installation CD.
Menu map Use the menu map to help navigate through the printer submenus and select configuration settings. Printing a menu map is very helpful when you are changing numerous printer settings.
Configuration page Use the configuration page to view current printer settings, to help troubleshoot printer problems, or to verify the installation of optional accessories, such as memory (DIMMs), trays, and printer languages. The content of the configuration page varies, depending on the options that are currently installed in the printer.
Supplies status page Use the supplies status page to obtain information about the print cartridge that is installed in the printer, the amount of life left in the print cartridge, and the number of pages and jobs that have been processed. The page also lets you know when you should perform the next preventive maintenance.
Embedded Web server When the printer is directly connected to a computer, the embedded Web server is supported for Windows 95 and later. In order to use the embedded Web server with a direct connection, you must select the Custom installation option when you install the printer driver.
● Supplies Status . Shows the life that remains in HP supplies (0% represents that a supply is empty). This page also provides supplies part numbers. To order new supplies, click Order Supplies in the Other Links area on the left side of the window.
Other links This section of the embedded Web server contains links that connect you to the Internet. You must have Internet access in order to use any of these links. If you use a dial-up connection and did not connect when you first opened the embedded Web server, you must connect before you can visit these Web sites.
To select status messages 1. Open Printer Status and Alerts in one of these ways: ● Double-click the Printer Status and Alerts tray icon, which is near the clock in the Tray Manager. ● On the Start menu, click Programs , click Printer Status and Alerts , and then click Printer Status and Alerts .
Control-panel menus Use the control-panel menus to control various printer functions. For example, you can use the RESETS submenu to reset and restore most of the factory default printer settings quickly. Not all of the available menus are described in this manual.
Resets submenu To find the RESETS submenu, use the control panel to open the CONFIGURE DEVICE menu. Items on the Resets submenu are used to return settings to the defaults and to change settings such as Sleep . The following section lists the settings and their possible values in the RESETS submenu.
Table 7-2. Diagnostics menu Item Values Explanation PRINT EVENT LOG No values available Press the S ELECT ( ) button to generate a list of the 50 most recent entries in the event log. The printed event log shows the error number, page count, error code, and description or personality that was in use when the event occurred.
Service menu (service PIN codes) Authorized HP service technicians can use this menu to gain access to printer settings that are reserved for service personnel. The service menu is protected by use of a personal identification number (PIN). When you select SERVICE from the list of menus, you are prompted to type an eight-digit PIN code.
Restoring the Service ID If you replace the formatter, the date is lost. Use this menu item to reset the value to the date that the printer was first used. The date format is YYDDD. Use the following procedure to calculate the date. 1. To calculate YY, subtract 1990 from the calendar year.
Printer resets and power-on modes The following sections describe the types of printer resets and power-on modes. Cold reset A cold reset unlocks menus that have been previously locked and sets all control panel menu items (including EIO settings) back to the factory defaults.
NVRAM initialization CAUTION Initializing the NVRAM resets the serial number, the event log, the page counts, and the EIO card (initializing the NVRAM resets service menu values to factory defaults). Use the service menu to restore the serial number and page counts.
Power-on bypass When the power is turned on the printer begins the power-on sequence. By performing a power-on bypass, you can cause the printer to resume the power-on sequence but not to recognize any installed EIO hard disk (skip disk-load procedure).
Test pages Printing test pages helps you determine whether or not the printer engine and the formatter are functioning. Engine-test page To verify that the printer engine is functioning, print an engine-test page. To print an engine- test page, press the engine-test-page switch on the formatter (see callout 5 in Figure 7-8.
Interface troubleshooting The following sections provide instructions for interface troubleshooting. Communications checks NOTE Communication problems are normally the customer's responsibility. Time spent attempting to resolve these problems might not be covered by the Hewlett-Packard product warranty.
Jetdirect page 5 1 2 3 4 Figure 7-5. Jetdirect page 1 HP Jetdirect Configuration If the EIO Jetdirect card is installed correctly and the printer completes its internal diagnostics, the I/O CARD READY status message prints. If communication is lost, an I/O NOT READY status message prints, followed by a two-digit error code.
Solving general printing problems In addition to the issues and solutions that are listed in this section, see Troubleshooting common Macintosh problems if you are using a Macintosh computer, and see Troubleshooting common PostScript problems if you are using the PS driver.
Print job is extremely slow. Cause Solution The job might be very complex. The maximum speed of the printer cannot be exceeded even when more memory is added.
The printer prints, but the text is wrong, garbled, or incomplete. Cause Solution The printer cable is loose or defective. Disconnect the printer cable and reconnect it. Try a print job that you know works. If possible, attach the cable and printer to another computer and try a print job that you know works.
The printer does not respond when you select Print in the software. Cause Solution The printer is malfunctioning. Check the control-panel display for messages and lights to determine if the printer is indicating an error. Note any message and see Table 7-8.
Clearing jams Occasionally, media can become jammed during a print job. The following are some of the causes: ● Trays are loaded incorrectly or overfilled. ● Tray 2 or tray 3 is removed during a print job. ● The top cover is opened during a print job.
Cause Solution The print media is not picked up by the internal rollers from tray 2, tray 3, or tray 4. Remove the top sheet of media. If the media is heavier than 120 g/m 2 (32 lb), it might not be picked up correctly from the tray. The print media has rough or jagged edges.
Clearing jams in the print-cartridge area Jams in this area might result in loose toner on the page. If you get any toner on your clothes or hands, wash them in cold water. (Hot water will set the toner into the fabric.) 1. Open the top cover. 2. Remove the print cartridge.
NOTE If the print cartridge is difficult to reinstall, make sure that the registration plate has been flipped back down into position and that you have pushed the print cartridge firmly into place. If the Attention light does not go out, jammed media remains inside the printer.
4. For tray 2, push the stack down to lock the metal paper-lift plate into place. For both trays, slide the tray into the printer. 5. To reset the printer and continue printing, press ( S ELECT button). NOTE If the Attention light does not go out, jammed media remains inside the printer.
3. If the media is almost completely visible from the top output bin, pull the remaining media carefully out of the printer. If the leading edge is not visible or is barely visible in the print-cartridge area, open the rear output bin all the way. To do this, push the bin door slightly forward and use your finger to disengage the grill at the base.
Clearing jams in the duplexer area This procedure applies only to printers that include a duplexer. 1. Remove tray 2 from the printer. 2. Push the green button on the right side of the front of the tray 2 opening to open the paper-access plate. 3. Reach in and pull out the jammed paper.
5. Reinstall tray 2. NOTE If the Attention light does not go out, jammed media remains inside the printer. Check the paper-feed and rear-output areas for jams.
Media handling problems If media is feeding incorrectly, use the information in this section to identify and resolve the problem. Multiple pages feed Table 7-4. Causes for multiple pages feeding Cause Solution The tray 1 separation pad is worn. Replace the separation-pad assembly.
Pages are wrinkled or folded Table 7-5. Causes for wrinkled or folded paper at the paper-path entrance Cause Solution The feed rollers or registration rollers are dirty or defective. Replace the affected rollers. The paper path contains foreign substances or dirt.
Understanding printer messages Printer messages that appear on the control-panel display relay the normal status of the printer (such as Processing... ) or an error condition (such as CLOSE TOP COVER ) that needs attention.
Control panel message Event log error message Description Recommended action 10.XX.YY SUPPLY MEMORY ERROR alternates with For help press An error has occurred in one or more of the printer supplies. XX description 00 = memory is defective 01 = memory is missing YY description 00 = print cartridge is missing or defective 1.
Control panel message Event log error message Description Recommended action 50.X FUSER ERROR For help press A fuser error has occurred. X Description 1 low fuser temperature 2 fuser warmup service 3 fuser over-temperature 4 faulty fuser 5 incorrect fuser is installed 6 open fuser circuit 1.
Control panel message Event log error message Description Recommended action 22 EIO X BUFFER OVERFLOW alternates with To continue press Too much data was sent to the EIO card in the specified slot [X]. An improper communications protocol might be in use.
Control panel message Event log error message Description Recommended action 49.XXXXX ERROR alternates with To continue turn off then on A critical firmware error has occurred. 1. Press C ANCEL J OB to clear the print job from the printer memory. 2. Turn the printer off, and then turn the printer on again.
Control panel message Event log error message Description Recommended action 49.XXXXX ERROR alternates with To continue turn off then on A critical firmware error has occurred.
Control panel message Event log error message Description Recommended action 52.XY ERROR For help press alternates with To continue turn off then on A temporary printing error occurred. 1. Press the S ELECT ( ) button to continue. 2. Turn the printer off, and then turn the printer on again.
Control panel message Event log error message Description Recommended action 56.XX ERROR For help press alternates with To continue turn off then on A temporary printing error occurred as a result of an incorrect input or output request. 1. Turn the printer off, and then turn the printer on again.
Control panel message Event log error message Description Recommended action 59.XY ERROR For help press alternates with To continue turn off then on A printer-motor error has occurred. X Description 0 main-motor error 1 motor startup error 2 motor rotation error 4 EP-motor error Y Description Y = 0 59.
Control panel message Event log error message Description Recommended action 68.X PERMANENT STORAGE FULL alternates with To continue press The printer permanent storage is full. Some settings might have been reset to the factory defaults. 1. Press the S ELECT ( ) button to continue.
Control panel message Event log error message Description Recommended action 68.X STORAGE ERROR SETTINGS CHANGED alternates with To continue press An error occurred in the printer permanent storage and one or more printer settings has been reset to its factory default.
Control panel message Event log error message Description Recommended action 79.XXXX ERROR alternates with To continue turn off then on The printer detected a critical hardware error.
Control panel message Event log error message Description Recommended action CARD SLOT X FILE SYSTEM IS FULL alternates with <Current status message> The CompactFlash card in slot X is full. Delete files from the CompactFlash card and then try again.
Control panel message Event log error message Description Recommended action INSTALL CARTRIDGE For help press The print cartridge is missing and must be reinstalled for printing to continue. Replace or correctly reinstall the print cartridge. INSUFFICIENT MEMORY TO LOAD FONTS/ DA TA .
Control panel message Event log error message Description Recommended action MANUALLY FEED [TYPE][SIZE] To continue press alternates with MANUALLY FEED [TYPE][SIZE] For help press The printer is waiting for media to be loaded in tray 1 for manual feed.
Control panel message Event log error message Description Recommended action Paused alternates with To return to ready press STOP The printer is paused but continues to receive data until the memory is full. The printer is not experiencing an error. 1.
Control panel message Event log error message Description Recommended action RAM DISK NOT INITIALIZED alternates with <Current status message> The file system has not been initialized.
Control panel message Event log error message Description Recommended action UNSUPPORTED D ATA ON [FS] DIMM IN SLOT X alternates with To clear press The data on the DIMM is not supported. The DIMM might need to be replaced. Turn the printer off before removing it.
Correcting print-quality problems This section helps you define print-quality problems and what to do to correct them. Often print- quality problems can be handled easily by making sure that the printer is correctly maintained, using print media that meets HP specifications, or running a cleaning page.
See Light print (partial page) See Light print (entire page) See Specks See Specks See Dropouts See Dropouts See Dropouts A A A A A B B B B B C C C C C a a a a a c c c c c b b b b b See Lines See Gray background See Toner smear See Loose toner See Repeating defects Dear Mr.
Light print (partial page) 1. Make sure that the print cartridge is fully installed. 2. The toner level in the print cartridge might be low. Replace the print cartridge. 3. The media might not meet HP specifications (for example, the paper is too moist or too rough).
Specks Specks might appear on a page after a jam has been cleared. 1. Print a few more pages to see if the problem corrects itself. 2. Clean the inside of the printer and run a cleaning page to clean the fuser. (See Cleaning the printer .) 3. Try using a different type of media.
Lines A A A A A B B B B B C C C C C a a a a a c c c c c b b b b b 1. Print a few more pages to see if the problem corrects itself. 2. Clean the inside of the printer and run a cleaning page to clean the fuser. (See Cleaning the printer .) 3. Replace the print cartridge.
Toner smear 1. Print a few more pages to see if the problem corrects itself. 2. Try using a different type of media. 3. Make sure that the environmental specifications for the printer are being met. (See Operating environment .) 4. Clean the inside of the printer and run a cleaning page to clean the fuser.
Repeating defects 1. Print a few more pages to see if the problem corrects itself. 2. Clean the inside of the printer and run a cleaning page to clean the fuser. (See Cleaning the printer .) 3. Measure the distance between two identical defects and see Repeating defects .
Misformed characters AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc 1. Print a few more pages to see if the problem corrects itself. 2. Make sure that the environmental specifications for the printer are being met. (See Operating environment .) 3. Reseat cables that are connected to the laser/scanner.
Curl or wave 1. Turn over the stack of media in the tray. Also, try rotating the stack 180°. 2. Make sure that the type and quality of the media that you are using meet HP specifications. (See Media specifications .) 3. Make sure that the environmental specifications for the printer are being met.
Vertical white lines 1. Print a few more pages to see if the problem corrects itself. 2. Make sure that the type and quality of the media that you are using meet HP specifications. (See Media specifications .) 3. Replace the print cartridge. 4. Remove the laser/scanner and check for dirt or other obstructions in the beam path.
White spots on black 1. Print a few more pages to see if the problem corrects itself. 2. Make sure that the type and quality of the media that you are using meet HP specifications. (See Media specifications .) 3. Make sure that the environmental specifications for the printer are being met.
Blurred print 1. Make sure that the type and quality of the media that you are using meet HP specifications. (See Media specifications .) 2. Make sure that the environmental specifications for the printer are being met. (See Operating environment .) 3.
Troubleshooting common Windows problems Error message: "Error Writing to LPTx" in Windows 9x. Cause Solution Media is not loaded. Make sure that paper or other print media is loaded in the trays. The cable is defective or loose. Make sure that the cables are connected correctly, the printer is on, and the Ready light is on.
Troubleshooting common Macintosh problems In addition to the problems that are listed in Solving general printing problems , this section lists problems that can occur when using Mac OS 9. x , or Mac OS X. NOTE Setup for USB and IP printing is performed through the Desktop Printer Utility .
A print job was not sent to the printer that you wanted. Cause Solution The wrong printer name or IP address is being used. Another printer that has the same or a similar name or IP address might have received your print job. Check the printer name or IP address by printing a configuration page.
When connected with a USB cable, the printer does not appear in the Desktop Printer Utility or the Apple System Profiler after the driver is selected. Cause Solution This problem is caused by either a software or hardware component. Software troubleshooting ● Check that your Macintosh supports USB.
The printer name, IP address, or Rendezvous host name does not appear in the printer list box in the print center. Cause Solution The printer might not be ready. Make sure that the cables are connected correctly, the printer is on, and the ready light is on.
A print job was not sent to the printer that you wanted. Cause Solution The wrong printer name or IP address is being used. Another printer with the same or similar name, IP address, or Rendezvous host name might have received your print job.
When connected with a USB cable, the printer does not appear in the Macintosh Print Center after the driver is selected. Cause Solution This problem is caused by either a software or a hardware component. Software troubleshooting ● Check that your Macintosh supports USB.
Troubleshooting common PostScript problems The following situations are specific to the PostScript (PS) language and might occur when several printer languages are being used. Check the control-panel display for messages that might help resolve problems.
VM Error Cause Solution A font error occurred. Select unlimited dow nloadable fonts from the printer driver. Range Check Cause Solution A font error occurred.
Printer component locations Diagrams are provided below detailing the locations of various printer components. Main assemblies Figure 7-6. Main assemblies, HP LaserJet 2400 series 1 Fuser 2 Laser/scan.
Main parts Figure 7-7. Main parts, HP LaserJet 2400 series 1 Fixing film 2 Pressure roller 3 Transfer charging roller 4 Tray 1 pick-up roller 5 Tray 1 separation pad 6 Tray 2 pick-up roller 7 Tray 2 M.
Sensors and switches Figure 7-8. Sensors and sw itches, HP LaserJet 2400 series 1 Delivery sensor 2 Face-up cover sensor 3 Power switch 4 Door switch 5 Test print switch 6 Tray 1 paper detection senso.
Motors, fans, and solenoids Figure 7-9. Motors, fans, and solenoids, HP LaserJet 2400 series 1 Fuser motor 2 Main motor 3 Tray 1 pickup solenoid 4 Main fan 5 Tray 2 pickup solenoid 6 Sub fan ENWW Prin.
PCAs Figure 7-10. PCAs, HP LaserJet 2400 series 1 Engine controller PCB 2 High-voltage power supply PCB 226 Chapter 7 Troubleshooting ENWW.
500-Sheet paper feeder Figure 7-11. 500-Sheet paper feeder, HP LaserJet 2400 series 1 Left cover 2 Rear cover 3 Upper right cover 4 Lower right cover 5 Front cover ENWW Printer component locations 227.
Wiring diagrams The following figures show HP LaserJet 2400 Series printer wiring and circuitry layout. Figure 7-12. Circuit diagram (1 of 2) 228 Chapter 7 Troubleshooting ENWW.
Figure 7-13. Circuit diagram (2 of 2) ENWW Wiring diagrams 229.
3 8 4 5 6 2 9 1 7 10 Figure 7-14. ECU wiring 1 FM1, main fan motor (J509) 2 Tray 1 pickup solenoid (J508) 3 Tray 1 sensor (J503) 4 Laser/scanner motor (J402) 5 Memory tag reader (J510) 6 Fuser motor (.
General timing diagrams 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 STBY WAI T STBY INTR PRINT LSTR Print Command Main Motor (M1) Fuser Heater (H1) Fuser Motor (M2) Scanner Motor(M3) Cassette P.
232 Chapter 7 Troubleshooting ENWW.
8 Parts and diagrams Chapter contents Chapter contents............................................................................................................... ..... 233 Ordering parts and supplies ...............................................
Ordering parts and supplies Parts Order replacement parts from the following Web sites: h30074.www3.hp.com/csn-aux/srvcdlvry/epdo/def ault/ePDOLogin.asp (technicians) h20141.
Accessories The following accessories and supplies are available for the HP LaserJet 2400 series. Product name Description Product number Part number Paper-handling accessories Optional 500-sheet tray and feeder unit Optional tray to increase paper capacity.
Product name Description Product number Part number Cables and interfaces Enhanced I/O (EIO) cards. HP Jetdirect print server multiprotocol EIO network cards. HP Jetdirect 620n Fast Ethernet (10/100Base- TX) print server J7934A J7934A Enhanced I/O (EIO) cards.
ENWW Accessories 237.
Covers Figure 8-1. Covers 238 Chapter 8 Parts and diagrams ENWW.
Table 8-2. Covers Ref Description Part number Qty 1 Screw, tapping, M3x6 XA9-1503-000CN 10 2 Cover, right upper RC1-4159-000CN 1 3 Screw, tapping, truss head, M4x10 XB4-7401-005CN 3 4 Screw, S, M3x8 X.
Internal components Figure 8-2. Internal components (1 of 4) 240 Chapter 8 Parts and diagrams ENWW.
Table 8-3. Internal components (1 of 4) Ref Description Part number Qty 1 Screw, S, M3x8 XA9-1500-000CN 30 2 Cable assembly RM1-1421-000CN 1 3 Laser/scanner assembly RM1-1521-000CN 1 4 Duct, scanner R.
Ref Description Part number Qty 33 Fan, sub RK2-0573-000CN 1 34 Holder, sub fan RC1-4134-000CN 1 35 Clip clamp, wire WT2-5694-000CN 1 36 Holder RC1-4009-000CN 1 37 Guide, cst., left rear RC1-3950-000CN 1 38 Guide, cst., right front RC1-3951-000CN 1 39 Guide, cst.
ENWW Internal components 243.
Figure 8-3. Internal components (2 of 4) 244 Chapter 8 Parts and diagrams ENWW.
Table 8-4. Internal components (2 of 4) Ref Description Part number Qty 1 Cable assembly RM1-1425-000CN 1 2 Link, switch RC1-4170-000CN 1 3 Holder, switch link RC1-4169-000CN 1 4 Screw, RS, M3x8 XA9-1.
Ref Description Part number Qty 32 Fuser, 220-240 V RM1-1531-000CN 1 33 Gear assembly RM1-1412-000CN 1 34 Tray 2 pickup assembly RM1-1481-000CN 1 Table 8-4.
ENWW Internal components 247.
Figure 8-4. Internal components (3 of 4) 248 Chapter 8 Parts and diagrams ENWW.
Table 8-5. Internal components (3 of 4) Ref Description Part number Qty 1 Fixing drive side plate assembly RM1-1500-000CN 1 2 Screw, S, M3x8 XA9-1500-000CN 7 3 Screw, w/washer, M3x6 XB2-7300-605CN 5 4.
Figure 8-5. Internal components (4 of 4) 250 Chapter 8 Parts and diagrams ENWW.
Table 8-6. Internal components (4 of 4) Ref Description Part number Qty 1 Cover, registration RC1-3936-000CN 1 2 Sheet, static charge RC1-4070-000CN 1 3 Guide, feed RC1-3935-000CN 1 4 Screw, tapping, .
Ref Description Part number Qty 32 Registration assembly RM1-1502-000CN 1 Table 8-6. Internal components (4 of 4) (continued) 252 Chapter 8 Parts and diagrams ENWW.
ENWW Internal components 253.
Tray 2 pickup assembly Figure 8-6. Tray 2 pickup assembly 254 Chapter 8 Parts and diagrams ENWW.
Table 8-7. Tray 2 pickup assembly Ref Description Part number Qty Tray 2 pickup assembly RM1-1481-000CN 1 7 Tray 2 pickup roller RL1-0542-000CN 1 ENWW Tray 2 pickup assembly 255.
Alphabetical parts list Table 8-8. Alphabetical parts list Description Part number Table and page Arm, door RC1-4055-000CN Table 8-3 on page 241 Arm, pad RC1-3937-000CN Table 8-6 on page 251 Base plat.
Description Part number Table and page Cover, right rear RC1-4156-000CN Table 8-2 on page 239 Cover, right upper RC1-4159-000CN Table 8-2 on page 239 Drive release assembly RM1-1522-000CN Table 8-5 on.
Description Part number Table and page Guide, cartridge, right lower RC1-4107-000CN Table 8-6 on page 251 Guide, cartridge, right upper RC1-4106-000CN Table 8-5 on page 249 Guide, cartridge., left lower RC1-4122-000CN Table 8-3 on page 241 Guide, cst.
Description Part number Table and page Link, switch RC1-4170-000CN Table 8-4 on page 245 Microswitch RK2-0534-000CN Table 8-4 on page 245 Motor, dc, 26.
Description Part number Table and page Screw, w/w asher, M3x6 XB2-7300-605CN Table 8-3 on page 241 Screw, w/w asher, M3x6 XB2-7300-605CN Table 8-4 on page 245 Screw, w/w asher, M3x6 XB2-7300-605CN Tab.
Description Part number Table and page Tray 1 pick-up shaft assembly RM1-1484-000CN Table 8-6 on page 251 Tray 2 pickup assembly RM1-1481-000CN Table 8-4 on page 246 Tray 2 pickup assembly RM1-1481-000CN Table 8-7 on page 255 Tray 2 pickup roller RL1-0542-000CN Table 8-7 on page 255 Table 8-8.
Numerical parts list Table 8-9. Numerical parts list Part number Description Table and page Q3953-60001 Formatter, non-network versions Table 8-3 on page 242 Q3955-60003 Formatter, network versions Ta.
Part number Description Table and page RC1-4055-000CN Arm, door Table 8-3 on page 241 RC1-4056-000CN Guide, door arm Table 8-3 on page 241 RC1-4057-000CN Hinge, left Table 8-2 on page 239 RC1-4058-000.
Part number Description Table and page RC1-4132-000CN Lever, test switch Table 8-4 on page 245 RC1-4133-000CN Holder, main fan Table 8-4 on page 245 RC1-4134-000CN Holder, sub fan Table 8-3 on page 24.
Part number Description Table and page RM1-1416-000CN Registration sensor pcb assembly Table 8-6 on page 251 RM1-1421-000CN Cable assembly Table 8-3 on page 241 RM1-1422-000CN Cable, memory tag Table .
Part number Description Table and page RU5-0379-000CN Gear, 19t Table 8-5 on page 249 RU5-0389-000CN Gear, 201t Table 8-5 on page 249 RU5-0400-000CN Gear, 12t Table 8-6 on page 251 RU5-0409-000CN Gear.
Part number Description Table and page XB4-7401-005CN Screw, tapping, truss head, M4x10 Table 8-2 on page 239 XB4-7401-005CN Screw,tapping,truss head,m4x10 Table 8-4 on page 245 XB4-7401-005CN Screw, tapping, truss head, M4x10 Table 8-5 on page 249 XB4-7401-005CN Screw, tapping, truss head, M4x10 Table 8-6 on page 251 Table 8-9.
268 Chapter 8 Parts and diagrams ENWW.
Index Symbols/Numerics 1,500-sheet tray troubleshooting 148 250-sheet tray. See tray 2 500-sheet tray diagrams 227 locking 37 paper specifications 11 printing from 35 troubleshooting 148 See also tray.
error messages 183 information pages 149 language, selecting 34, 144 lights 33 menu map, printing 34, 48, 151 menus 149, 158 online Help 183 print cartridge supply level, checking 54 removing 92 Reset.
Explorer, versions supported embedded Web server 40 HP Toolbox 44 HP Web Jetadmin 43 F face-down-roller shaft, removing 128 fans, diagrams 225 FastRes 4 features 2, 4 feed roller 63 Finnish laser stat.
jobs formatted incorrectly 147 not printing, troubleshooting 146 stopped, troubleshooting 147 K keys, control panel 32 Korean EMI statement 20 L labels, specifications 15 language, control panel 34, 1.
networks formatter, replacing 165 HP Jetdirect configuration page 152 HP Jetdirect page 168 HP Jetdirect print servers, models including 5 troubleshooting 167 noise specifications 10 non-HP print cart.
primary charging stage 72 print cartridge door, removing 130 print cartridges cleaning near 58 error messages 197, 199 features 6 life expectancy 54 low toner message 55 memory tag 76 non-HP 53 operat.
specifications accessibility 7 acoustic emissions 10 electrical 9 energy use 6 envelopes 14 environmental 24 labels 15 media 11 memory 5 operating environment 10 paper 12 physical 8 speed 4 transparen.
sensors 69, 224 solenoid, diagrams 225 solenoid, removing 124 troubleshooting 148 See also trays tray 2 locating 2 locking 37 paper specifications 11 part numbers 254 parts diagrams 223 pickup roller,.
V VM error 221 voltage specifications 9 W warranty print cartridge 17 product 16 service ID 161 washing off toner 175 wavy paper, troubleshooting 169, 209 Web browser requirements embedded Web server .
278 Index ENWW.
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© 20 0 4 H e w le t t - P a c k a r d D ev e lopme n t C o m pa n y , L . P . www .hp .com/suppor t/lj2 410 www .hp .com/suppor t/lj2 4 20 www .hp .com/suppor t/lj2 4 30 Q5 9 56-909 3 2 *Q5956-90932*.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il HP LaserJet 2420n è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del HP LaserJet 2420n - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso HP LaserJet 2420n imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul HP LaserJet 2420n ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il HP LaserJet 2420n, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del HP LaserJet 2420n.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il HP LaserJet 2420n. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo HP LaserJet 2420n insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
