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HP LaserJet 9000 Service Manual

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HP LaserJet 9000/9040/9050
Service Manual

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   Summary of Contents for HP LaserJet 9000

  • Page 1

    HP LaserJet 9000/9040/9050 Service Manual...

  • Page 3

    HP LaserJet 9000, 9040, and 9050 Series printers Service_____________________...

  • Page 4

    Copyright and License Trademark Credits ® ® © 2005 Copyright Hewlett-Packard Adobe and PostScript are trademarks of Development Company, LP Adobe Systems Incorporated. ® Reproduction, adaptation or translation MS-DOS is a U.S. registered trademark of without prior written permission is prohibited, Microsoft Corporation.

  • Page 5: Table Of Contents

    1 Product information Product features of the HP LaserJet 9000 Series printers ....2 Product features of the HP LaserJet 9040/9050 Series printers ....4 Product specifications .

  • Page 6: Table Of Contents

    Retrieve job menu ..........38 Information menu .

  • Page 7: Table Of Contents

    Tray 4 ............95 Tray 4 driver PCA .

  • Page 8: Table Of Contents

    Diagnostics flowchart ......... 216 Other diagnostics for the HP LaserJet 9000, 9000mfp, and 9000Lmfp ..217 Cold reset.

  • Page 9: Table Of Contents

    Sensor test ..........222 Light-pattern interpretation .

  • Page 10

    Index viii Table of contents...

  • Page 11

    ........7 Table 5. Electrical specifications (HP LaserJet 9000) ..... 7 Table 6.

  • Page 12

    Table 50. Tray 4 main body (2 of 2) ....... . 287 Table 51.

  • Page 13

    Figure 3. Interface connections (HP LaserJet 9040/9050 Series printer) ..11 Figure 4. Interface connections (HP LaserJet 9000 Series printer) ..11 Figure 5. Optional accessories ........12 Figure 6.

  • Page 14

    Figure 78. Fuser assembly (2 of 2) ....... . . 134 Figure 79. Formatter (HP LaserJet 9000 shown) ..... . 135 Figure 80.

  • Page 15

    Figure 130. Repeating defect ruler ........243 Figure 131. Printer wiring diagram (HP LaserJet 9000 series printer) ..251 Figure 132.

  • Page 16

    List of figures...

  • Page 17

    Product features of the HP LaserJet 9000 Series printers .......

  • Page 18: Product Features Of The Hp Laserjet 9000 Series Printers

    The printer automatically determines and switches to the appropriate switching language for the print job. Enhanced memory The HP LaserJet 9000 Series printers come with 64 MB of memory and and memory expansion can be expanded to 384 MB. 2 Chapter 1 Product information...

  • Page 19

    Table 1. Features of the HP LaserJet 9000 Series printers (continued) Expandability All models accept the following accessories: Optional tray 1, a 100-sheet or 10-envelope multipurpose tray for automatic and manual feeding of envelopes, labels, transparencies, custom-sized media from 98 x 191 mm (3.8 x 7.5 inches) to 312 x 470 mm (12.3 x 18.5 in), and heavy paper.

  • Page 20: Product Features Of The Hp Laserjet 9040/9050 Series Printers

    Product features of the HP LaserJet 9040/9050 Series printers HP LaserJet 9040/9050 printer The HP LaserJet 9040/9050 printer (product number Q7697A/Q3721A) comes standard with 64 MB RAM, wide-format printing, and two 500-sheet trays (tray 2 and tray 3). HP LaserJet 9040n/9050n printer The HP LaserJet 9040n/9050n printer (product number Q7698A/Q3722A) comes standard with 128 MB RAM, wide-format printing, two 500-sheet trays (tray 2 and tray 3), a 100-sheet multipurpose tray (tray 1), and an embedded HP Jetdirect print...

  • Page 21

    Table 2. Features of the HP LaserJet 9040/9050 Series printers (continued) Expandability All models accept the following accessories: Optional tray 1, a 100-sheet or 10-envelope multipurpose tray for automatic and manual feeding of envelopes, labels, transparencies, custom-sized media from 98 x 191 mm (3.8 x 7.5 inches) to 312 x 470 mm (12.3 x 18.5 inches), and 64 to 216 g/m²...

  • Page 22: Product Specifications

    Product specifications Identification The model number and printer serial number are listed on an identification label located in two places: on the rear cover on the chassis behind the right door The model number is alphanumeric, such as C4270A. The serial number contains information about the country/region of origin and the revision level, the production code, and production number of the printer.

  • Page 23

    63.5 kg (140 lb) 9000n/9040n/9050n: 76.2 kg (168 lb) (without print cartridge) 69.4 kg (153 lb) 9000dn/9040dn/9050dn: 76.2 kg (168 lb) Table 5. Electrical specifications (HP LaserJet 9000) Volts Frequency Amperes (A) Watts (W) (typical) Thermal units per hour (BTu/hr) 100-127 Vac...

  • Page 24

    Table 6. Electrical specifications (HP LaserJet 9040) Volts Frequency Ampres Watts (W) (typical) Thermal units per hour (BTu/hr) 100-127 Vac ± 50/60 Hz Minimum printing = 900 W printing = 3,550.36 BTu/hr ± 2 Hz recommended current standby = 200W standby = 904.71 BTu/hr capacity = PowerSave 1 = 158 W...

  • Page 25

    Table 9. Acoustical specifications Declared per ISO 9296 Sound power level Printing (50 ppm) = 7.2 Bels (A) [72 dB(A)] HP LaserJet 9050 Ready = 5.6 Bels (A) [56 dB(A)] Sound power level Printing (40 ppm) = 7.0 Bels (A) [dB(A)] HP LaserJet 9040 Ready = 5.6 Bels (A) [dB(A)]...

  • Page 26: Product Overview, External View Of The Printer And Accessories

    Product overview External view of the printer and accessories Standard output bin Face-up bin (face-down bin) Optional 3,000-sheet stapler/stacker, 3,000- Optional sheet stacker, 8-bin tray 1 mailbox, or multifunction finisher Front door Right door Duplexer (inside the printer) Left door Ver tical (behind the transfer door...

  • Page 27: Interface Connections

    Interface connections (HP LaserJet 9040/9050 Series printer) Parallel connector HP Jetdirect print server (optional) Foreign interface connector (not used) HP Fast InfraRed Connect slots (optional IR pod) HP Jet-Link connector (optional accessories connection) Figure 4. Interface connections (HP LaserJet 9000 Series printer) Product overview 11...

  • Page 28: Optional Accessories

    Optional accessories Multifunction finisher 3,000-sheet stacker 3,000-sheet stapler/stacker Tray 1 Duplex printing accessory (duplexer) Tray 4 8-bin mailbox (HP LaserJet HP Fast InfraRed Connect (HP LaserJet 9040/9050 Series printer only) 9000 Series printer only Figure 5. Optional accessories 12 Chapter 1 Product information...

  • Page 29: Regulatory Information, Regulatory Requirements, Fcc Regulations, Declaration Of Conformity, Environmental Product Stewardship Program

    For regulatory information and requirements, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide. FCC regulations For FCC regulations, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide. Declaration of conformity For declaration of conformity information, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide.

  • Page 30: Service Approach, Parts And Supplies, Warranty, Limited Warranty For Print-cartridge Life

    "Illustrations and parts lists" in chapter 8, and can be ordered through HPS. Warranty For warranty information and requirements, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide. Limited warranty for print-cartridge life For print-cartridge warranty information, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide.

  • Page 31: 2 Product Requirements

    Product requirements Chapter contents Site requirements ............. 16 Operating environment .

  • Page 32: Site Requirements, Operating Environment

    Site requirements Operating environment The electrical and environmental specifications must be maintained to ensure the proper operation of this printer. See "Product specifications" in chapter 1. Consider the following points before installing the printer: Install in a well-ventilated, dust-free area. Install on a level, flat surface that can support the printer size and weight.

  • Page 33: Space Requirements

    Space requirements 353 mm 638 mm (25.1 inches) (13.9 inches) 353 mm 638 mm (25.1 inches) (13.9 inches) Figure 6. Space requirements for the base model Site requirements 17...

  • Page 34

    2,591 mm (102 inches) 2,591 mm (102 inches) Figure 7. Space requirements with a finishing device (3,000-sheet stapler/stacker shown) and tray 4 installed 18 Chapter 2 Product requirements...

  • Page 35: Media Specifications, Guidelines For Selecting Print Media, Special Media Specifications

    25. Always test print media before buying large quantities. Note Hewlett-Packard neither warrants nor recommends the use of a particular brand of paper or print media. Media properties are subject to manufacturing changes, and HP has no control over such changes.

  • Page 36

    Figure 8. Sample seams Note Print envelopes from tray 1 only. Send envelopes straight through the printer, entering at tray 1 and exiting from the face-up bin. Note For the best print quality, position margins no closer than 15 mm (0.6 inch) from the edges of the envelope.

  • Page 37

    Figure 9. Adhesive labels Transparency specifications To avoid damaging the printer, use only transparencies that are recommended for use in laser printers. Construction—Prior to printing, transparencies should lie flat with less than 10 mm (0.39 inch) curl. Condition—Transparencies should not be wrinkled, nicked, or otherwise damaged. Temperature—Transparencies should be stable at 190°C (374°F), which is the printer fusing temperature.

  • Page 38: Storing Print Media

    Odd sizes: check minimum and maximum supported sizes in chapter 2. Carbonless media: carbonless media (NCR) is not supported by HP LaserJet printers. Recycled media: choose recycled media that meets Hewlett-Packard specifications. Note that recycled media might not be as bright as indicated in the specifications. HP recommends that recycled media contain no more than 5% groundwood.

  • Page 39

    streaks and smudging. Humid weather or water coolers can cause the humidity in a room to increase. As a package of paper is opened and used, it absorbs any excess moisture, causing light print and dropouts. Also, as paper loses and gains moisture, it can distort. This can cause jams. Therefore, print-media storage and handling are as important as the paper-making process itself.

  • Page 40

    Table 10. Paper weight equivalence U.S. post- U.S. bond U.S. text/ U.S. cover U.S. bristol U.S. index U.S. tag Europe Japan card weight (lb) book weight (lb) weight (lb) weight (lb) weight (lb) metric metric thickness weight (lb) weight weight (mm) (g/m (g/m...

  • Page 41: Media Input/output Options, Trays, Bins, And Paper Handling

    Such repair is not covered by the Hewlett-Packard warranty or service agreements. The HP LaserJet 9000 Series printers and HP LaserJet 9040/9050 Series printers accept a variety of media, such as cut-sheet paper (including up to 100% recycled fiber-content paper), envelopes, labels, transparencies, and custom-size paper.

  • Page 42: Supported Sizes Of Paper For Input And Output

    Supported sizes of paper for input and output Note For more information on an optional HP output device, see the user guide that came with the product. Tray or Bin Capacity Paper Weight Optional tray 1 Up to Standard detectable sizes: 64 to 216 g/m 100 sheets (17- to 58-lb bond)

  • Page 43

    Tray or Bin Capacity Paper Weight Left output bin Up to 100 Standard sizes: 64 to 216 g/m (17- to sheets Letter, Legal, Executive, ISO A3, ISO 58-lb bond) A4, ISO A5, 11 x 17, JIS B5, JIS B4, Up to 10 JPostD, Monarch, 8K, 16K transparencies Custom sizes...

  • Page 44

    Tray or Bin Capacity Paper Weight Optional Up to 1,000 Standard sizes: 64 to 199 g/m (17- to multifunction sheets of Letter, Legal, Executive, ISO A3, ISO 53-lb bond) in lower finisher stacked 20 lb A4, ISO A5, JIS B4, JIS B5, 11 x 17 booklet bin bond for Letter Custom sizes:...

  • Page 45: 3 Product Configuration

    Product configuration Chapter contents Using the control panel ............30 Control-panel buttons .

  • Page 46: Using The Control Panel

    Using the control panel The control panel includes three LED indicator lights, four navigation buttons, a help button, a message-clear button, a pause/resume button (9000 Series) or a menu button (9040/9050 Series), a cancel-job button (9000 Series) or a stop button (9040/9050 Series), a numeric keypad, and a graphical display that can show up to four lines of text.

  • Page 47: Control-panel Buttons

    Opens or exits the menus. UMERIC KEYPAD Specifies numeric values. Note The HP LaserJet 9000 and the HP LaserJet 9040/9050 Series printers are similar products. The behavior or feature is common in both printers unless noted otherwise. Using the control panel 31...

  • Page 48: Numeric Keypad Commands

    Numeric keypad commands The numeric keypad is used to specify numeric values. The numeric keypad provides a shortcut key to items in the menus if the device is in an idle state. Pressing the numbers that correspond with the position of the menu item opens that menu. For example, to print a configuration page, the customer can press 22.

  • Page 49: Settings And Defaults, Setting The Display Language, Setting The Tray Registration

    Settings and defaults The printer bases most printing decisions on temporary settings or on factory (permanent) defaults. Note Settings that you send from software programs override default settings. Temporary settings are the values that are set through a software program for the current print job. Temporary settings remain in effect until the current print job is finished.

  • Page 50

    Figure 12. Registration page (1 of 2) 34 Chapter 3 Product configuration...

  • Page 51

    Figure 13. Registration page (2 of 2) Settings and defaults 35...

  • Page 52: Printer Driver Information

    Printer driver information When you change a setting from the printer control panel, the new setting becomes the default value. You can override any control-panel setting from the printer driver and through most software programs. 36 Chapter 3 Product configuration...

  • Page 53: Control-panel Menus, Using A Menu Map

    Control-panel menus Press to cycle through the control-panel menus. Each menu is described in a separate table in this section. Menu items appear only if their associated option is installed, or their functions are activated. All menus and their associated items are available when the printer is online. In menu mode, if no buttons are pressed for approximately 30 seconds, the system automatically returns to the top level and displays either an existing error or one of the following messages: READY, if the printer is online...

  • Page 54: Retrieve Job Menu, Information Menu

    Retrieve job menu Note If no private, stored, quick copy, or proof and hold jobs are stored on the printer hard disk or in RAM, the message NO STORED JOB appears when the menu is selected. A list of user names appears. Select a user name, and a list of jobs that are stored for that user appears.

  • Page 55: Paper-handling Menu

    FIRST: The user can specify if media in the tray should TRAY 1=FIRST FIRST be used. (HP LaserJet 9000 only) CASSETTE CASSETTE: If set to CASSETTE, the tray must be configured with a size and type, but it then functions like all of the other trays.

  • Page 56

    Configure the fuser mode that is associated with each FUSER MODES types media type. The default value for each paper type is (HP LaserJet 9000 AUTO. only) The fuser mode can only be changed from this menu option on the control panel.

  • Page 57: Configure Device Menu, Printing Submenu

    Configure device menu This menu contains all of the administrative functions. Printing submenu Some items in this menu are available from a software program, or from the printer driver (if the appropriate driver is installed). Printer-driver and software-program settings override control-panel settings.

  • Page 58: Pcl Submenu

    Item Values Explanation This item appears only when an optional duplex printing DUPLEX=OFF accessory is installed. Set the value to ON to print on both sides (duplex) or OFF to print on one side (simplex) of a sheet of paper. For more information, see the HP support flyer or go to www.hp.com/support/lj9050_lj9040 www.hp.com/support/lj9000.

  • Page 59

    Item Values Explanation 5 to 128 Sets vertical spacing from 5 to 128 lines for the default FORM LENGTH=60 paper size. Specify the value by using the numeric keypad. Allows the user to select the default page orientation. ORIENTATION= PORTRAIT PORTRAIT LANDSCAPE Note...

  • Page 60: Print-quality Submenu

    Print-quality submenu Some items in this menu can be set with a software program, or from the driver (if the appropriate driver is installed). Driver and software settings override control-panel settings. Item Values Explanation Shift the margin alignment to center the image on the page from PRINT TEST top to bottom, and from left to right.

  • Page 61

    Item Values Explanation Use the printer Resolution Enhancement technology (REt) setting RET=MEDIUM to produce print that contains smooth angles, curves, and edges. LIGHT All print resolutions, including FastRes 1200, benefit from REt. MEDIUM DARK Note It is best to change the REt setting from the driver or software program.

  • Page 62: System Setup Submenu

    90 MINUTES HOUR When you send a print job, press a control-panel button, 2 HOURS (HP LaserJet 9000 open a paper tray, or open the top cover, the printer 4 HOURS only) automatically exits Sleep mode. Note Sleep turns off the backlight on the display, but the display is still readable.

  • Page 63

    Item Values Explanation Select the default printer language (personality). Possible PERSONALITY=AUTO AUTO values are determined by which valid languages are installed in the printer. Normally, you should not change the printer language (the default is AUTO). If you change it to a specific printer XHTML language, the printer does not automatically switch from one MIME...

  • Page 64: I/o Submenu

    This item determines how the RAM disk is configured. This RAM DISK=AUTO AUTO item appears only if no optional hard disk is installed and the (HP LaserJet 9000 printer has at least 8 MB of memory. only) OFF: The RAM disk is disabled.

  • Page 65

    EIO X Jetdirect submenu The EIO (enhanced input/output) submenu appears only when an EIO device is installed in an EIO slot on the printer (such as an HP Jetdirect print server). The items in the menu depend on the particular accessory product that is installed. If the printer contains an HP Jetdirect print server EIO card, you can configure basic networking parameters by using the EIO menu.

  • Page 66

    Embedded Jetdirect submenu (HP LaserJet 9040n/9050n and 9040dn/9050dn only) Item Options Values Explanation Enable the TCP/IP protocol. TCP/IP ENABLE Disable the TCP/IP protocol. HOST NAME An alphanumeric string, up to 32 characters, that identifies the device. This name is listed on the Jetdirect configuration page.

  • Page 67

    Item Options Values Explanation TCP/IP A link-local IP address of 169.254.x.x is set. DEFAULT IP AUTO IP The address 192.0.0.192 is set, consistent with LEGACY older Jetdirect products. Specify the IP address (n.n.n.n) of the Primary PRIMARY Domain Name System (DNS) Server. Specify the IP address (n.n.n.n) of the Secondary SECONDARY Domain Name System (DNS) Server.

  • Page 68

    Item Options Values Explanation CAUTION DIAGNOSTICS LOOPBACK This test will erase your TCP/IP configuration. TEST YES the loopback test will be initiated. NO the loopback test will not be initiated. Specify the IP address of the remote host. A valid PING TEST DEST IP IP address must be specified.

  • Page 69: Resets Submenu

    Item Options Values Explanation Specifies wether the current security settings on RESET SECURITY the print server will be saved or reset to factory defaults. NO (default): The current security settings are maintained. YES: The security settings are reset to factory defaults.

  • Page 70: Diagnostics Menu, Service Menu

    Diagnostics menu Administrators can use this menu to troubleshoot jam and print-quality issues. Item Values Explanation Generates a localized LIFO (last in, first out) list of the 50 most PRINT EVENT recent entries in the error log. The printed event log shows error number, page count, error code, and description or personality.

  • Page 71: Remote Firmware Upgrade (rfu), Upgrading Firmware To A Single Printer, Remote Firmware Upgrade (rfu)

    Remote firmware upgrade (RFU) The process for upgrading printer firmware remotely involves three steps: Determine the current level of firmware installed on the printer. Go to the www.hp.com/go/lj9000_firmware, www.hp.com/go/lj9040_firmware, or www.hp.com/go/lj9050_firmware Web site and download the latest firmware. Download the new firmware to the printer. Note In some instances, an upgrade might require about 10 minutes to complete.

  • Page 72

    Press OK. Press EXIT. The following command can be set on the computer to address a timeout message that appears on the computer screen during an upgrade. From a command prompt or MS-DOS window, type the command and press the enter key: Mode lpt1:,,p If the printer is attached to a parallel port other than LPT1, substitute the correct LPT port number in the mode command.

  • Page 73: Hp Web Jetadmin 6.1 For A Single Printer

    Verify that the information that appears in All Available Images. Click Return to Device Firmware Update. 10 Select the printer(s) to be upgraded. 11 Click Update Firmware Now to start the upgrade immediately, or enter an appropriate date and time, and then click Schedule Update for Later to perform the upgrade at another time. Note Do not turn the printer off during the upgrade.

  • Page 74

    When prompted for the type of update to perform, click Update Printers, and then click Continue. From the list of HP Devices, select the printers to be upgraded, or click Select All. Click Update to install the new printer firmware. 58 Chapter 3 Product configuration...

  • Page 75: 4 Product Maintenance

    Product maintenance Chapter contents Preventative maintenance ............60 Preventive maintenance kit contents .

  • Page 76: Preventative Maintenance, Preventive Maintenance Kit Contents

    Preventative maintenance To ensure optimum print quality, the printer prompts customers to perform printer maintenance every 350,000 pages. When the PERFORM PRINTER MAINTENANCE message appears on the control panel, the customer needs to purchase and install a preventive maintenance kit. After a new maintenance kit is installed, press and hold until all three LEDs are solid.

  • Page 77: Cleaning The Printer And Accessories, General Cleaning

    Cleaning the printer and accessories To maintain superior print quality and performance, use the following procedures to clean the printer and the paper-handling accessories thoroughly every time you change the print cartridge or whenever print-quality problems occur. General cleaning WARNING! In order to avoid shock hazard, turn the printer and the paper-handling accessories off and unplug all of the power cords before you begin these steps.

  • Page 78: Internal Cleaning

    Internal cleaning During the printing process, paper, toner, and dust particles can accumulate inside the printer and the paper-handling accessories. Over time, this buildup can cause print-quality problems such as toner specks or smearing. Internal cleaning can assist in correcting and preventing these types of problems.

  • Page 79

    Using a dry, lint-free cloth, wipe any residue from the paper-path area, the registration roller, and the print cartridge cavity. Figure 16. Wipe any residue Replace the print cartridge. Figure 17. Replace the print cartridge Press the button on the green lever, and then turn the lever clockwise to the locked position. Figure 18.

  • Page 80

    Close the front cover. Plug in all of the power cords, and then turn on the printer. Figure 19. Close the front cover 64 Chapter 4 Product maintenance...

  • Page 81: Fuser Cleaning

    Fuser cleaning To complete internal cleaning, create and process a cleaning page. Create a cleaning page Generating a cleaning page cleans the excess toner off the pressure roller in the fuser. The page contains instructions that walk the customer through the process of inserting the page in a tray. If tray 1 is installed, the instructions indicate that the page should be placed face-down in tray 1.

  • Page 82

    Process a cleaning page Follow the instructions on the cleaning page to complete the cleaning process. PROCESS CLEANING PAGE is only visible to the customer after a cleaning page is generated by using the CREATE CLEANING PAGE menu. When the customer generates the page and places it face-down in tray 1, or face-up in tray 2, the customer is instructed to select this menu item to complete the cleaning process.

  • Page 83: Print Cartridge Information, Storage, Handling Instructions

    Print cartridge information Print cartridges contain components that are sensitive to light, temperature, and humidity. Make sure that the customer follows the recommendations in this section to ensure the highest quality and longest life of the print cartridge. Storage The print cartridge (C8543X) should not be removed from its package until installation. If cartridges are stored, the storage environment should meet the conditions listed in the following table.

  • Page 84: Refilled Print Cartridges, Print-cartridge Weights, Print-cartridge Life Expectancy, Saving Toner By Using Economode

    Hewlett-Packard has no ability to ensure that a refilled print cartridge functions at the high level or reliability of a new HP print cartridge. Hewlett-Packard also cannot predict the long-term effect of the various toner formulations found in refilled cartridges.

  • Page 85: 5 Theory Of Operation

    Theory of operation Chapter contents Basic operation ............. . . 70 Sequence of operation .

  • Page 86: Basic Operation

    Basic operation This chapter provides information about the following systems: Engine control Formatter Laser/scanner Image formation Pickup and feed Relationships among the five systems are represented in figure 21. Figure 21. Printer systems 70 Chapter 5 Theory of operation...

  • Page 87: Sequence Of Operation

    Sequence of operation The engine control system controls operational sequences. Table 14 describes the sequences. Figure 22. Sequence-of-operation block diagram Basic operation 71...

  • Page 88

    Table 14. Normal sequence of operation (continued) State Period Operation INTR From the input of a print- scanner-motor rotation (initial reservation command from the fuser/delivery-motor rotation rotation) formatter until the laser/scanner drum-motor rotation enters a ready state high-voltage control (negative bias to transfer roller) receives print command fan-motors 1 through 6 full-speed rotation pickup operation starts...

  • Page 89: Power-on Sequence

    Table 15. Failure sequence of operation (continued) State Period Operation SLEEP From the time the power is drive stop (scanner motor, high-voltage control, fuser control, switched on until the end of the fuser/delivery motor, 24 V stop, 3.3 V sets PowerSave mode, LSTR period fan motor stop) status setting...

  • Page 90: Timing Chart

    Timing chart Figure 23. Timing chart block diagram 74 Chapter 5 Theory of operation...

  • Page 91: Engine Control System

    Engine control system The engine control system coordinates the laser/scanner, image formation, and pickup and feed systems according to the instructions it receives from the formatter. The engine control system consists of the DC controller PCA, the high-voltage power supply circuit, and the low-voltage power supply unit.

  • Page 92: Dc Controller Pca

    DC controller PCA The DC controller circuit controls operational sequences of the printer. Figure 25. DC controller PCA block diagram 76 Chapter 5 Theory of operation...

  • Page 93: Dc Controller Operations

    DC controller operations The CPU (IC201) on the DC controller PCA controls the following printer operations: • Sequence of the printer • Communications with the formatter • High-voltage power supply circuit • Rotation of the pickup motor, lifter motor, pickup roller motor, and fan motor 6 •...

  • Page 94: High-voltage Power Supply Circuit

    High-voltage power supply circuit The high-voltage power supply circuit applies a high-voltage bias to the primary charging roller, the developing cylinder, the pre-transfer upper guide, the transfer charging roller, the separation static charge eliminator, and the pressure roller through the ASIC (IC 202), according to instructions it receives from the CPU (IC201) on the DC controller PCA.

  • Page 95

    Each of the bias generation circuits has a specific purpose: Primary charging bias generation. Applies bias to the primary charging roller to spread a uniform, negative charge on the photosensitive drum. Developing bias generation. Controls the amount of toner transferred onto latent images formed on the photosensitive drum.

  • Page 96: Low-voltage Power Supply Unit

    Low-voltage power supply unit The low-voltage power supply unit consists of the fuser control circuit and the low-voltage power- supply circuit. Figure 27. Power-supply-block diagram Fuser control circuit Three heaters heat the fuser roller and pressure roller. The main heater (H1) heats the center of the fuser roller, the sub-heater (H2) heats both ends of the fuser roller, and the lower heater (H3) heats the pressure roller.

  • Page 97: Formatter System, Formatter Hardware

    • Parallel interface (HP LaserJet 9000 only)—Receives incoming data through its IEEE- 1284 C interface connector. The IEEE-1284 C interface provides high-speed, two-way communication between the printer and the host, letting the customer change printer settings and monitor printer status from the host computer.

  • Page 98

    Note A flash memory card that is designed for use with a digital camera should not be inserted into the printer. The printer does not support photo printing directly from a flash memory card. If you install a camera-type flash memory card, a message asking if you want to reformat the flash memory card appears on the control-panel display.

  • Page 99: Laser/scanner System

    Laser/scanner system The laser/scanner unit of the HP LaserJet 9000 series printer and the HP LaserJet 9040/9050 series printer contains two laser diodes in its laser unit. The printer employs the “twin-beam method,” which scans two lines simultaneously. Based on signals it receives from the DC controller and the formatter, the laser/scanner PCA causes the two laser diodes to emit laser beams.

  • Page 100: Image Formation System, The Eight Processes Of Image Formation

    Image formation system The image formation system consists of the cartridge, transfer charging roller, and fuser. When a print command is sent from the formatter, the engine controller drives the main motor to rotate the photosensitive drum, primary charging roller, developing cylinder, transfer charging roller, and pressure roller.

  • Page 101: Print Cartridge

    Transfer—During the transfer process, the toner image on the drum surface is transferred to the paper. The transfer charging roller applies a positive charge to the back of the paper and causes the negatively charged toner on the drum surface to be attracted to the paper. After separation, the drum is cleaned and conditioned for the next image.

  • Page 102

    Cartridge memory The print cartridge comes with built-in RAM. The printer detects the cartridge condition by reading and writing to this memory. The read/write of the memory is performed by the memory controller after receiving instructions from the DC controller through the antenna unit. The DC controller instructs the memory controller PCA to perform read/write at the following timing: Read •...

  • Page 103: Pickup And Feed System, Media-size Detection, Media-level Detection, Multifeed Prevention, Overhead-transparency Detection, Fuser-wrapping-jam Detection

    Pickup and feed system The pickup and feed system is divided into two blocks: pickup/feed and fuser/delivery. This printer contains two standard pickup sources (tray 2 and tray 3) and two delivery sources (face-up and face- down bins.) The pickup unit picks up single sheets from tray 2 or tray 3. The feed unit transports each sheet to the fuser unit.

  • Page 104: Jam Detection

    Jam detection The printer detects jams according to the following conditions: Pickup 1 delay jam. Media does not reach the tray 2 feed sensor A (PS1402) or the tray 3 feed sensor A (PS1404) within 3.2 seconds after pickup begins. Pickup 2 delay jam.

  • Page 105

    Figure 31. Pickup-and-feed system sensors and switches Pickup and feed system 89...

  • Page 106

    Table 16. Pickup-and-feed system sensors and switches Sensor/switch Description Overhead transparency sensor Registration paper sensor PS501 Fuser delivery sensor PS502 Fuser jam sensor PS1401 Tray 2 feed sensor B PS1402 Tray 2 feed sensor A PS1403 Tray 3 feed sensor B PS1404 Tray 3 feed sensor A PS1405...

  • Page 107

    Figure 32. Pickup-and-feed system motors and solenoids Pickup and feed system 91...

  • Page 108

    Table 17. Pickup-and-feed system motors and solenoids Motor/solenoid Description DCM1 Fuser/delivery motor DCM2 Main/drum motor SMT1 Pickup roller up and down motor SMT2 Lifter motor SMT3 Pickup motor Face-up solenoid SL501 Jam detection lever drive solenoid Registration roller drive clutch Pre-registration roller drive clutch 92 Chapter 5 Theory of operation...

  • Page 109: Tray, Tray 1 Driver Pca, Power Supply, Sequence Of Operation

    Tray 1 Tray 1 is a multipurpose tray that picks up and feeds media into the printer. Tray 1 driver PCA A driver PCA in the tray holds a four-bit microcomputer (CPU-IC2501) that controls its operational sequence and serial communications with the DC controller PCA. The CPU drives a motor, solenoid, and clutch according to commands sent from the DC controller PCA.

  • Page 110: Pickup And Feed, Jam Detection

    Pickup and feed The tray 1 pickup unit picks up media by lowering the pickup roller onto the surface of the media that is loaded in the tray, and then separating the roller from the media surface the pickup cam lifts the pickup roller up and down.

  • Page 111: Tray 4 Driver Pca, Tray, Power Supply, Sequence Of Operation

    Tray 4 Tray 4 is a 2,000-sheet feeder that picks up and feeds media into the printer. Tray 4 driver PCA A driver PCA in tray 4 holds a 16-bit microcomputer (IC1) that controls the tray 4 operational sequence and serial communications with the formatter. The driver PCA drives the motors and clutch according to commands that the formatter sends.

  • Page 112: Media-level And Media-size Detection, Pickup And Feed, Jam Detection

    Pickup and feed The formatter sends a signal to the driver PCA to start driving the pickup and feed motors. Rotated by the rollers, the pickup roller picks up a sheet, the separation roller removes any excessive sheets, and the feed roller transports the sheet to the registration roller unit. After the media enters the registration roller unit, the registration roller corrects the skew and the second feed roller feeds the media to the printer.

  • Page 113: 6 Removal And Replacement

    Removal and replacement Chapter contents Introduction ..............99 Removal and replacement strategy .

  • Page 114

    DC controller ............138 Toner-sensor contact assembly .

  • Page 115: Introduction, Removal And Replacement Strategy, Repair Notices, Electrostatic Discharge (esd), Required Tools, Electrostatic Discharge (esd)

    Introduction Removal and replacement strategy This chapter documents removal and replacement of field replaceable units (FRUs) only. Replace parts in the reverse order of their removal. Directions for difficult or critical replacement procedures are included. Repair notices WARNING! The printer can have sharp sheet metal edges. Use caution when working on the printer. CAUTION Always remove the print cartridge before removing or replacing assemblies and parts (see page 119).

  • Page 116: Orientation Of The Printer (with Tray 4), Orientation Of The Printer (with Tray)

    Orientation of the printer (with tray 4) The printer is shown with tray 4 and tray 1. Front and right side orientation Front Right Figure 35. View of front and right side Back and left side orientation Back Left Figure 36. View of back and left side 100 Chapter 6 Removal and replacement...

  • Page 117: Covers, Right Top Cover

    Covers The following covers can be removed from the printer: Right top cover Left door and diverter Left top cover Left back cover Front cover Back cover Right door Rail cover Right lower cover Right top cover Remove the control panel. See page 111. Remove tray 1 if it is installed.

  • Page 118

    Remove three silver screws (callout 2). Gently lift the right edge to release the tabs, and then lift the right top cover to the right. Figure 38. Right top cover (2 of 2) To reinstall If the left top cover was removed (page 103), you must replace it before replacing the right top cover. 102 Chapter 6 Removal and replacement...

  • Page 119: Left Top Cover

    Left top cover Remove the control panel. See page 111. Remove the right top cover. See page 101. Remove two silver screws (callout 1). Lift the left top cover up, and then pull it toward the right side of the printer to release two locating tabs (on the underside of the cover, at the left edge).

  • Page 120: Front Cover

    Front cover Remove two small, plastic retaining pins (callout 1). Pinch and release two tabs (below the retaining cups, callout 2) on the end of each black retaining strap to release the strap ends. Figure 40. Front cover (1 of 2) Remove the front cover from the hinges (callout 3) by pulling up on the hinge tabs that are located below the front cover.

  • Page 121: Right Door

    Right door Remove tray 1 if it is installed. See page 125. Open the right door. Pinch and then push the two tabs (callout 1) on the end of the black strap to release the strap ends. If you have difficulty, use needle-nose pliers. Disconnect the four locator tabs (callout 2) on the cable cover, and then remove the cable cover.

  • Page 122: Right Lower Cover

    Right lower cover Remove the following FRUs: • Right door. See page 105. • Back cover. See page 109. • Right and left rail covers. See page 110. Remove three screws (callout 1). Rotate the lower edge up to release two tabs (callout 2). Remove the right lower cover.

  • Page 123: Left Door And Diverter

    Left door and diverter Note If the 3,000-sheet stacker, 3,000-sheet stapler/stacker, or multifunction finisher is installed, move it away from the printer to gain access to the left door and diverter. Open the left door. CAUTION Make sure that you do not drop the pins (callout 1) that are on the end of each spring-loaded rod. Grasp the two spring-loaded rods (callout 2), push them in toward the printer, and then pull them down and away from the printer.

  • Page 124: Left Back Cover

    Left back cover Remove the formatter. See page 135. Remove three silver screws (not shown) from the left back cover. Rotate the left back cover toward the back of the printer to release the three tabs (callout 1) on the left side of the cover and the two tabs (callout 2) on the right side of the cover. Figure 46.

  • Page 125: Back Cover

    Back cover Remove the power cord. Remove two silver screws (callout 1) on the right back cover. Remove seven gold screws (callout 2) on the back cover. While facing the back of the printer, rotate the left edge out and then remove the back cover. CAUTION Make sure that you do not damage the plastic that surrounds the power connection.

  • Page 126: Right And Left Rail Covers

    Right and left rail covers Remove trays 2 and 3. See page 121. Remove two silver screws (callout 1) from the right rail cover. Lift the upper tab (callout 2) to release it, and push the lower tab (callout 3) toward the right to release it.

  • Page 127: Top Assemblies, Control Panel

    Top assemblies Gain access to the following assemblies from the top of the printer: Control panel Delivery-assembly fans and face-down-bin fan Laser/scanner assembly Delivery motor Delivery assembly Cartridge release lever Delivery-fan assembly Control panel Open the front cover. Release the two tabs (callout 1) on the underside of the control panel by pulling them toward the front of the printer.

  • Page 128: Laser/scanner Assembly

    Laser/scanner assembly Remove the following FRUs: • Control panel. See page 111. • Right top cover. See page 101. Unplug three cable connectors (callout 1). Remove four long, gold screws (callout 2). Lift the laser/scanner out of the printer. Figure 50. Laser/scanner assembly 112 Chapter 6 Removal and replacement...

  • Page 129: Delivery Assembly

    Delivery assembly Remove the following FRUs: • Right top cover. See page 101. • Left top cover. See page 103. • Left back cover. See page 108. • Control panel. See page 111. Open the left door. Face the top of the printer from the left side. Unplug one cable connector (callout 1).

  • Page 130: Delivery-fan Assembly

    Delivery-fan assembly Remove the delivery assembly. See page 113. Gently remove the two sensor flags (callout 1) from the holders. Unplug three cable connectors (callout 2). CAUTION Make sure that you remove and replace the cable connectors carefully. Remove one silver screw (callout 3). Grasp the middle fan, lift the right side of the metal casing, and then slide the metal casing to the left to release the tab (callout 4).

  • Page 131: Delivery-assembly Fans And Face-down-bin Fan (fans 3, 6, And 4)

    Delivery-assembly fans and face-down-bin fan (fans 3, 6, and 4) Remove the fan assembly. See page 114. Carefully unwind the fan cables from the cable guides (callout 1). Figure 53. Delivery-assembly fans and face-down-bin fan (1 of 2) Remove six gold screws (callout 2). Remove the three fans: •...

  • Page 132: Delivery Motor

    Delivery motor Remove the following FRUs: • Right top cover. See page 101. • Left top cover. See page 103. • Control panel. See page 111. • Delivery assembly. See page 113. WARNING! The PCA board is fragile. To prevent damage, hold the PCA board when you remove or plug in the connector.

  • Page 133: Cartridge Release Lever

    Cartridge release lever Remove the following FRUs: • Right top cover. See page 101. • Left top cover. See page 103. • Control panel. See page 111. Open the front cover. Rotate the cartridge release lever downward. Figure 56. Cartridge release lever (1 of 3) Remove the print cartridge.

  • Page 134

    Rotate the cartridge release lever to the vertical, unlocked position. Figure 58. Cartridge release lever (3 of 3) Face the front of the printer, and slide the cartridge release handle away from the front of the printer. 118 Chapter 6 Removal and replacement...

  • Page 135: Front Assemblies, Print Cartridge

    Front assemblies Gain access to the following assemblies from the front of the printer: Print cartridge Rollers (pickup, feed, and separation) Transfer-roller assembly Fuser-jam-removal knob Tray 2 and tray 3 Registration-jam-removal knob Print cartridge WARNING! To prevent damage, do not expose the print cartridge to light. Put it in its print cartridge bag, or, if the bag is not available, cover the print cartridge with a piece of paper.

  • Page 136: Transfer-roller Assembly

    Transfer-roller assembly CAUTION Do not touch the black transfer roller. Skin oils can damage the roller. Open the front cover. Unlock the print cartridge by rotating the large, green lever (callout 1) downward. Press the blue tab (callout 2), and slowly pull the transfer roller assembly out of the printer. Lift the assembly upward to release the catch on the underside, and remove the assembly from the printer.

  • Page 137: Tray 2 And Tray 3 (interchangeable), Tray 2 And Tray 3 (interchangeable)

    Tray 2 and tray 3 (interchangeable) Slide the tray open until it stops. Grasp the sides of the tray. Lift the tray up and remove it. Figure 61. Tray 2 or tray 3 Front assemblies 121...

  • Page 138: Rollers (pickup, Feed, Or Separation), Rollers (pickup, Feed, Or Separation), Rollers (pickup, Feed, Or Separation)

    Rollers (pickup, feed, or separation) CAUTION Do not remove the torque limiter from behind the separation roller. If the black spacer comes off, return it to the shaft, metal-edge first. Remove tray 2 or tray 3. See page 121. Locate the appropriate roller on the upper-right side of the tray cavity. The pickup roller (callout 1) is a type 1 roller.

  • Page 139: Fuser-jam-removal Knob

    Fuser-jam-removal knob CAUTION Make sure not to drop any of the internal parts from the fuser-jam-removal knob, and pay careful attention to the original location of the parts. Open the front cover. Release the tab (callout 1) with a small flatblade screwdriver. Slowly remove the knob and internal parts (spring, pin, and bushing).

  • Page 140: Registration-jam-removal Knob

    Registration-jam-removal knob Open the front cover. Hold the registration-jam-removal knob firmly, and remove the silver screw inside the knob (callout 1). Pull the knob off of the printer. Figure 64. Registration-jam-removal knob To reinstall Make sure that you align the knob with the notch on the post. 124 Chapter 6 Removal and replacement...

  • Page 141: Right Assemblies, Tray (

    Right assemblies Gain access to the following assemblies from the right side of the printer: Multipurpose tray (tray 1) Paper-input unit (PIU) Registration assembly Transfer-guide assembly Tray 1 Unlock two locking pins (one shown, callout 1) at the bottom of tray 1. Gently pull the bottom of the tray away from the printer.

  • Page 142: Paper-input Unit (piu), Paper-input Unit (piu), Paper-input Unit (piu), Paper-input Unit (piu), Paper-input Unit (piu)

    Paper-input unit (PIU) Remove the following FRUs: • Right door. See page 105. • Back cover. See page 109. • Right rail cover. See page 110. • Tray 2 and tray 3. See page 121. Remove four gold screws (callout 1), two from each rail. Pull the rails out from the front of the printer.

  • Page 143

    Remove three screws (callout 3) from the right lower cover. Rotate the lower edge up to release two tabs (callout 4). Remove the right lower cover. Figure 68. Paper-input unit (3 of 5) Face the back of the printer. 10 Remove the J-220 and J-221 cable connectors (callout 5) from the DC controller, and carefully unwind the cables from the cable guides (callout 6).

  • Page 144

    11 Face the right side of the printer. 12 Push the green registration handle (callout 7) down slightly, and then pull it out to gain access to the PIU. 13 Remove four silver screws (callout 8). CAUTION The PIU is heavy. 14 Grasp the PIU handle (callout 9), and lift the PIU out.

  • Page 145: Registration Assembly

    Registration assembly Remove the following FRUs: • Right door. See page 105. • Back cover. See page 109. • Print cartridge. See page 119. • Tray 2 and tray 3. See page 121. • Registration-jam-removal knob. See page 124. • PIU. See page 126. Unplug the J-215 cable connector (callout 1) from the DC controller.

  • Page 146

    Remove two gold screws (callout 2) from the registration assembly. Lift the registration assembly up slightly, and then rotate it downward until you can pull it from the chassis. Figure 72. Registration assembly (2 of 2) To reinstall WARNING! Make sure not to scrape the top of the registration assembly against the chassis. Small, black, plastic pieces on top of the registration assembly can be damaged easily.

  • Page 147: Transfer-guide Assembly

    Transfer-guide assembly Remove the following FRUs: • Right door. See page 105. • Back cover. See page 109. • Transfer-roller assembly. See page 120. • Tray 2 and tray 3. See page 121. • PIU. See page 126. • Registration assembly. See page 129. •...

  • Page 148

    To reinstall Face the right side of the printer, and reinsert the pin (callout 1) in the back, left corner. Rotate the transfer guide assembly upward, and slide the three back tabs (callout 2) into place. CAUTION You must confirm that the tabs are securely in place before proceeding. Face the left side of the printer, and check the tabs.

  • Page 149: Left Assemblies, Duplexer

    Left assemblies Note If the 3,000-sheet stacker, 3,000-sheet stapler/stacker, multifunction finisher, or 8-bin mailbox is installed, move it away from the printer before beginning repairs to the left side of the printer. Gain access to the following assemblies from the left side of the printer: Duplexer Fuser assembly Duplexer...

  • Page 150: Fuser Assembly

    Fuser assembly WARNING! The fuser assembly can be hot. Use caution when removing it. Note If an optional output accessory is installed, remove it. If a duplexer is installed, remove it. See page 133. Lift the left door handle, and then open the left door. Rotate the two blue locking tabs (callout 1) toward each other and downward to release them.

  • Page 151: Back Assemblies, Formatter

    Disconnect all cables from the formatter. Loosen the two thumb screws (callout 1). Grasp the thumb screws, and slide the formatter out of the printer. Place the formatter on an ESD mat. Figure 79. Formatter (HP LaserJet 9000 shown) Back assemblies 135...

  • Page 152: Low-voltage Power Supply

    Low-voltage power supply Remove the back cover. See page 109. Remove the large cable connector (callout 1) from the DC controller. Unroute the cable from the cable guides (callout 2). Figure 80. Low-voltage power supply (1 of 2) Unplug one standard cable connector (callout 3) from the low-voltage power supply. Unplug one molex cable connector (callout 4) by pulling and releasing the tab on the side of the connector.

  • Page 153: High-voltage Power Supply

    High-voltage power supply Remove the back cover. See page 109. WARNING! The flat ribbon cable is fragile. Do not bend or fold it. Remove the flat ribbon cable connector (callout 1) from the DC controller. Unplug the low-voltage power-supply cable connector (callout 2) from the DC controller, and unroute the cable from the cable guides (callout 3).

  • Page 154: Dc Controller

    DC controller CAUTION The DC controller is sensitive to electrostatic discharge (ESD). Always perform service work at an ESD-protected workstation, or use an ESD mat. For further precautions, see page 99. Remove the following FRUs: • Back cover. See page 109. •...

  • Page 155

    Remove four gold screws (callout 2). Release the small tab (callout 3), and rotate the top edge of the DC controller away from the printer. Remove the DC controller from the two metal holders (callout 4). 2 3 2 4 Figure 85.

  • Page 156: Toner-sensor Contact Assembly

    Toner-sensor contact assembly Remove the following FRUs: • Back cover. See page 109. • High-voltage power supply. See page 137. • DC controller. See page 138. Remove two screws (callout 1). Remove the toner-sensor contact assembly. Figure 86. Toner-sensor contact assembly To reinstall Make sure that the top tab (callout 2) is on the outside of the chassis.

  • Page 157: Drum Motor

    Drum motor Remove the back cover. See page 109. Remove the HVPS. See page 137. Unplug one cable connector (callout 1). Remove four gold screws (callout 2). Pull the drum motor away from the printer. Figure 88. Drum motor Back assemblies 141...

  • Page 158: Feed-drive Assembly

    Feed-drive assembly Remove the following FRUs: • Back cover. See page 109. • High-voltage power supply. See page 137. • DC controller. See page 138. Disconnect the drum motor. Open the front cover. Press the white button on the cartridge release lever (callout 1, page 119), and then rotate the lever clockwise until it locks into place.

  • Page 159: Power-supply Fan (fan 1), Power-supply Fan (fan), Power-supply Fan (fan), Power-supply Fan (fan)

    Power-supply fan (fan 1) Remove the back cover. See page 109. Unplug the fan cable connector (callout 1), and carefully unwind the fan cables from the cable guides (callout 2). Slide the power supply fan (callout 3) out of the printer. Figure 90.

  • Page 160: Cartridge Fan (fan 5), Cartridge Fan (fan), Cartridge Fan (fan), Cartridge Fan (fan)

    Cartridge fan (fan 5) Remove the back cover. See page 109. Remove the J-216 cable connector (callout 1) from the DC controller. Figure 91. Cartridge fan (1 of 2) Remove tray 1 if it is installed. See page 125. Open the right door. Release the strap by pinching and then pushing the two tabs (page 105, callout 1) on the end of the black strap.

  • Page 161: Controller Fan (fan 2), Controller Fan (fan), Controller Fan (fan), Controller Fan (fan)

    Controller fan (fan 2) Remove the back cover. See page 109. Locate the controller fan below the formatter. Unplug the fan cable connector (callout 1), and carefully unwind the fan cables from the cable guides (callout 2). Release two black tabs (callout 3). Slide the controller fan (callout 4) out of the printer.

  • Page 162: Jetlink Connector

    Jetlink connector Remove the back cover. See page 109. Disconnect two cables (callout 1) that are connected to the Jetlink connector (behind the white ground connector). Remove two screws (callout 2). Remove the Jetlink connector. Figure 94. Jetlink connector 146 Chapter 6 Removal and replacement...

  • Page 163: Fuser-connector Holder Assembly

    Fuser-connector holder assembly Remove the following FRUs: • Formatter. See page 135. • Back cover. See page 109. • Left top cover. See page 103. • Right top cover. See page 105. • Low-voltage power supply. See page 136. • High-voltage power supply. See page 137. •...

  • Page 164

    Remove one screw (callout 5) and one cable connector (callout 6), and then pull the fuser- connector holder assembly toward you. Figure 97. Fuser-connector holder assembly (3 of 3) 148 Chapter 6 Removal and replacement...

  • Page 165: Fuser Delivery-drive Assembly

    Fuser delivery-drive assembly Remove the following FRUs: • Left top cover. See page 103. • Right top cover. See page 105. Open the left door. Remove the delivery assembly. See page 113. Disconnect one cable (callout 1) and one connector (callout 2). Figure 98.

  • Page 166

    From the left side of the printer, lift the back of the fuser delivery drive assembly to disengage the top tabs (callout 4). Figure 100. Fuser delivery-drive assembly (3 of 3) Pull the fuser delivery-drive assembly toward you to disengage the front tab, rotate the assembly to the left, and then lift it away from the chassis.

  • Page 167: Orientation, Tray, Left Side Cover

    Tray 4 The following covers and assemblies can be removed from tray 4: Left side cover Drive assembly Right side cover Controller board Back covers Paper-size detection switch Tray assembly Power supply Tray 4 rollers (pickup, feed, and separation) Pickup assembly Registration assembly Paper connecting unit Drive motor...

  • Page 168: Right Side Cover

    Right side cover Remove two screws (callout 1) from the right side cover. Pull the top edge of the cover outward. Lift the right side cover up and out to remove it from tray 4. Figure 102. Right side cover To reinstall Make sure that the hook (callout 2) on the inside of the cover connects correctly.

  • Page 169: Back Covers

    Back covers Center back cover Remove four screws (callout 1) from the center back cover. Remove the center back cover. Right back cover Remove the center back cover. Slide the right back cover (callout 2) toward the center to release an interior tab. Lift the right back cover straight up to release a second interior tab.

  • Page 170

    Tray 4 CAUTION Tray 4 is heavy and can be damaged if dropped. Use both hands when removing tray 4. Open tray 4 (the tray assembly), and remove all of the paper. Pull the tray assembly out until it stops. Press the release button (callout 1) on the right side of the tray and the release button (not shown) on the left side of the tray.

  • Page 171: Rollers (pickup, Feed, And Separation), Rollers (pickup, Feed, And Separation), Rollers (pickup, Feed, And Separation)

    Rollers (pickup, feed, and separation) Remove tray 4. See page 154. Locate the appropriate roller on the upper right side of the tray cavity. The pickup roller (callout 1), feed roller (callout 2), and separation roller (callout 3) are all type 2 rollers. Note To gain access to the separation roller, slide the blue roller shield toward the back of tray 4 (as shown in figure 105).

  • Page 172

    Registration assembly Remove the right side cover. See page 152. Remove four screws (callout 1). CAUTION Use care when following step 3. Three cables are connected to the registration assembly. Gently lift the registration assembly off of tray 4, and unplug three connectors (callout 2) from the rear of the registration assembly.

  • Page 173: Drive Motor

    Drive motor Remove the center back cover. See page 153. Unplug the cable connector (callout 1) from the controller board. Carefully unwind the cable from the cable guides (callout 2). Remove two screws (callout 3). Remove the drive motor from tray 4. Figure 108.

  • Page 174: Drive Assembly

    Drive assembly Remove the center back cover. See page 153. Unplug the cable connector (callout 1) from the controller board. Carefully unwind the cable from the cable guides (callout 2). Remove two screws (callout 3). Remove the drive assembly from tray 4. Figure 109.

  • Page 175: Controller Board

    Controller board Remove the following FRUs: • Center back cover. See page 153. • Left back cover. See page 153. Unplug eleven connectors (callout 1). Figure 110. Controller board (1 of 2) Remove two screws (callout 2). Release two holding pins (callout 3). Remove the controller board from tray 4.

  • Page 176: Paper-size Detection Switch Pca

    Paper-size detection switch PCA Remove the center back cover. See page 153. Remove one screw (callout 1) to remove the leaf spring (callout 2). Figure 112. Paper-size switch PCA (1 of 2) Release four tabs (callout 3), and remove the PCA from the casing. Unplug the cable connector (callout 4).

  • Page 177: Power Supply

    Power supply Remove the following FRUs: • Center back cover. See page 153. • Left back cover. See page 153. Unplug one connector (callout 1). Remove two screws (callout 2). Slide the power supply to the left to remove it. 2 3 2 Figure 114.

  • Page 178: Pickup Assembly

    Pickup assembly Remove the following FRUs: • Right side cover. See page 152. • Center back cover. See page 153. • Right back cover. See page 153. • Tray assembly. See page 154. • Registration assembly. See page 156. From the back of tray 4, unplug two connectors (callout 1). Figure 115.

  • Page 179: Paper-connecting Unit

    Paper-connecting unit Release the two levers (callout 1) by pulling them toward the center of the paper connecting unit. Lift the paper connecting unit straight up and remove it. Figure 117. Paper-connecting unit Tray 4 163...

  • Page 180

    164 Chapter 6 Removal and replacement...

  • Page 181: 7 Troubleshooting

    Diagnostics flowchart ............216 Other diagnostics for the HP LaserJet 9000, 9000mfp, and 9000Lmfp....217 Cold reset .

  • Page 182

    Repeating defect ruler ........... . . 243 Media troubleshooting .

  • Page 183: Troubleshooting Process

    Troubleshooting process The troubleshooting process is a systematic approach that addresses the primary problems first, and then other problems, to discover the causes for printer malfunctions and errors. The "Basic troubleshooting process flow" on page 168 illustrates the primary steps for troubleshooting the printing system.

  • Page 184: Basic Troubleshooting Process Flow

    Basic troubleshooting process flow Figure 118. Basic troubleshooting process flow (1 of 2) 168 Chapter 7 Troubleshooting...

  • Page 185

    Figure 119. Basic troubleshooting process flow (2 of 2) Troubleshooting process 169...

  • Page 186: Preliminary Operating Checks

    Preliminary operating checks Make sure that the following conditions are met before troubleshooting a specific printer problem: The printer is plugged in, and the specified power is being delivered. The selected tray contains media that is correctly loaded and adjusted. The print cartridge is installed correctly.

  • Page 187: General Troubleshooting Information, Chattering When The Main Motor Is Turned On

    General troubleshooting information The following lists symptoms and typical solutions to miscellaneous problems. Abnormal noises are evident, such as grinding or chattering when the main motor is turned on In the print cartridge area: If the print cartridge is new, automatic seal roll-up will cause noise until seal removal is complete. If it is not new, replace the print cartridge.

  • Page 188: Envelopes Are Wrinkling, Fusing Is Poor, Is Selected For The First Page Of The Job

    Envelopes are wrinkling Verify that the input tray is tray 1. Verify that the output destination is the face-up bin. Place the fuser levers in the up position and retry printing the envelopes. Try different envelopes (make sure that the envelopes are within specifications; see the HP LaserJet Printer Family Print Media Guide).

  • Page 189

    Tray 2, tray 3, and tray 4 Note Standard sizes are automatically detected in these trays. Use these steps to set the size for custom media in tray 2, tray 3, and tray 4: Press to open the menus. to scroll to PAPER HANDLING, and then press to scroll to TRAY X SIZE, where X is the tray that you are setting, and then press to scroll to CUSTOM, and then press to select the unit of measure (MILLIMETERS or INCHES), and then press...

  • Page 190: Power-on

    Is ac power available at the Make sure that power is available. See "Electrical specifications printer power receptacle? (HP LaserJet 9000)" in Chapter Is the printer on/off switch set to Push the switch to the on position. Are the printer fans on?

  • Page 191: Troubleshooting By Using Control-panel Messages, Event Log, Event Log Page

    Troubleshooting by using control-panel messages The control panel should show the message READY, PAUSED, or POWERSAVE ON. For information about error messages that appear, see the event log. If the display is blank, see "Power-on" on page 174. Event log page Use the event log to diagnose and troubleshoot printer errors and intermittent failures.

  • Page 192

    Ask the customer for any observed error trends (for example, if jams tend to occur in a specific area of the printer). Record any specific error trends. "Printer-message tables" on page 179” and follow the recommended action. Sample event log Figure 120. Sample event log (HP LaserJet 9000 series printer page shown) 176 Chapter 7 Troubleshooting...

  • Page 193

    View the event log Use the event log to scroll through the contents of the event log from the control panel. The 50 most recent events appear, with the most recent appearing first. Use to scroll through the event- log contents. If the event log is empty, the control panel shows the message EVENT LOG IS EMPTY. Follow these steps to view the event log: Press to open the menus.

  • Page 194: Control-panel Messages

    Control-panel messages Make sure to read the exact text of the control-panel message, including the error-message number and the text, in order to locate the error message in the tables. This control panel stores enhanced information. Messages that appear on the control panel provide six categories of information. Each message category is assigned a priority.

  • Page 195: Control-panel And Event-log Message Format, Printer-message Tables

    Control-panel and event-log message format The control-panel messages are in the following format: 13.XY.ZZ JAM INSIDE DUPLEXER WAITING FOR TRAY XX TO LIFT 40 EIO X BAD TRANSMISSION The event-log messages are in the following format: 3 13.xy.zz 0 JAM INSIDE DUPLEXER 2 00.00.00 0 WAITING FOR TRAY XX TO LIFT 1 40.00.00 0 EIO X BAD TRANSMISSION Note...

  • Page 196: Alphabetical Error Messages

    Alphabetical error messages Table 20. Alphabetic error messages Message Event-log Description or explanation Recommended action error message The printer detected a device Turn off the printer, and then [FS] DEVICE failure on the specified device. turn the printer on again. FAILURE [FS] is: To enter menus...

  • Page 197

    Table 20. Alphabetic error messages (continued) Message Event-log Description or explanation Recommended action error message The print cartridge is Remove and reinstall the print CARTRIDGE FAILURE defective. cartridge For help press alternates with The toner-sensor contact Replace the cartridge. RETURN FOR assembly is defective.

  • Page 198

    Table 20. Alphabetic error messages (continued) Message Event-log Description or explanation Recommended action error message The printer has received data. Press to print the last page. DATA RECEIVED PRESS CONTINUE alternates with READY To enter menus press The printer is deleting the stored No action is necessary.

  • Page 199

    Table 20. Alphabetic error messages (continued) Message Event-log Description or explanation Recommended action error message The printer has just been No action is necessary. INITIALIZING turned on. PERMANENT STORAGE Permanent storage is initializing. The paper-path between the Close the input device paper path. INPUT PAPER PATH printer and the external paper- OPEN...

  • Page 200

    Table 20. Alphabetic error messages (continued) Message Event-log Description or explanation Recommended action error message The printer ran out of memory (the Add additional memory. MEMORY SHORTAGE remainder of the job is canceled). JOB CLEARED Add a hard disk. For help press Verify the job and program alternates with settings.

  • Page 201

    Table 20. Alphabetic error messages (continued) Message Event-log Description or explanation Recommended action error message A configuration page is printing. No action is necessary. PRINTING CONFIGURATION An event log is printing. No action is necessary. PRINTING EVENT LOG A file directory page is printing. No action is necessary.

  • Page 202

    Table 20. Alphabetic error messages (continued) Message Event-log Description or explanation Recommended action error message The scan carriage is locked. Unlock the scan carriage. SCAN CARRIAGE LOCKED A scanning job failed. Turn off the printer, and then turn SCAN FAILURE the printer on again.

  • Page 203

    Table 20. Alphabetic error messages (continued) Message Event-log Description or explanation Recommended action error message The custom switch is in the Verify the tray settings. TRAY XX SIZE= “Standard” position, and the *DETECTED SIZE Verify the program settings. customer selects a value from the For help press Set the tray switch to menu.

  • Page 204: Numerical Error Messages

    Numerical error messages Table 21. Numeric error messages Control panel Event-log Description Recommended action message error message 13.01.00 A page is jammed in the paper Clear the jam in the indicated 13.01.00 JAM IN path at the tray 1 feed area. area.

  • Page 205

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the paper Clear the jam in the indicated 13.03.00 13.03.00 JAM IN path at the tray 1 feed area. area. TRAY 1 The media did not reach the For help press...

  • Page 206

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the paper Clear the jam in the indicated 13.05.00 13.05.00 JAM INSIDE path at the fuser area. area. RIGHT DOOR The leading edge of the media For help press Close the door so that the...

  • Page 207

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the paper Clear the jam in the indicated 13.09.00 13.09.00 JAM INSIDE path at the face-down bin. area. LEFT DOOR The leading edge of the media For help press Close the door so that the...

  • Page 208

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the paper Clear the jam in the indicated 13.11.00 13.11.00 JAM INSIDE path at the reversing area. area. DUPLEXER DOOR The trailing edge of the media For help press Close the door so that the...

  • Page 209

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the paper Clear the jam in the indicated 13.11.08 13.11.08 JAM IN path at the vertical transfer unit area. INPUT ACCESSORY registration area.

  • Page 210

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the paper Clear the jam in the indicated 13.12.00 13.12.00 JAM INSIDE path at the duplexer. area. LEFT DOOR The leading edge of the media For help press Close the door so that the did not reach the duplexer...

  • Page 211

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message Media was present in the paper Clear the jam. 13.12.0A 13.12.10 path when power was turned on. JAM IN LEFT Check for mechanical ACCESSORY interference in the flipper and For help press paper-path rollers.

  • Page 212

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message Media is present in the Clear the jam. 13.12.14 13.12.20 accumulator when the printer JAM IN LEFT Turn off the printer, and then is turned on. ACCESSORY turn the printer on again.

  • Page 213

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message Media is jammed in the stapler Clear the jam. 13.12.1F 13.12.31 unit. JAM IN LEFT Turn off the printer, and then ACCESSORY turn the printer on again. For help press Send a staple job to the stapler.

  • Page 214

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the paper Clear the jam in the indicated 13.20.00 13.20.00 JAM INSIDE path. area. FRONT DOOR Media is present in the printer. For help press Close the door so that the printer attempts to clear the...

  • Page 215

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A door is open. Close the door so that the 13.21.00 13.21.00 JAM INSIDE printer attempts to clear the LEFT DOOR paper path. For help press Clear the jam in the indicated area.

  • Page 216

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A page is jammed in the pickup Clear the jam in the indicated 13.30.00 13.30.00 JAM INSIDE area of tray 1. area. RIGHT DOOR For help press Close the door so that the printer attempts to clear the paper path.

  • Page 217

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A tray 2 pickup jam has Clear the jam in the indicated 13.XX.YZ JAM IN 13.01.00 occurred ( = 2) (PS1402). area. TRAY N -or- Close the door so that the printer attempts to clear the 13.01.00...

  • Page 218

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A duplexing delay jam has Clear the jam in the indicated 13.XX.YZ JAM INSIDE 13.12.00 occurred. area. DUPLEXER -or- Close the door so that the printer attempts to clear the 13.13.00 A duplexing stay jam has...

  • Page 219

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message The printer embedded I/O buffer To continue printing, press 22 EMBEDDED I/O overflowed during a busy state. (some data will be BUFFER OVERLOW lost). Turn off the printer, and then turn the printer on again.

  • Page 220

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A connection with the EIO card in To continue printing, press 40 EIO X BAD slot X has been abnormally (some will be lost). TRANSMISSION interrupted.

  • Page 221

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A printer error occurred, and X To continue printing, press 41.X 41.X corresponds to the following issue: PRINTER ERROR For help press • 1 = Unknown misprint error Turn off the printer, and then alternates with turn the printer on to...

  • Page 222

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A printer error occurred, and X Turn off the printer, and then 52.X 52.X corresponds to the following issue: turn the printer on to PRINTER ERROR Scanner error continue.

  • Page 223

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A printer error occurred, and X Turn off the printer, and then 57.X 57.XX corresponds to the following issue: turn the printer on again to PRINTER ERROR Cartridge fan error (fan #5) continue.

  • Page 224

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message Tray X is lifting the media to the top Open tray X. 60.X 60.X of the tray for correct feeding, but PRINTER ERROR Check tray X for obstructions. something is preventing the lift For help press Remove and reseat tray X.

  • Page 225

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message The paper path connection unit is Install the paper-path connection 66.11.01 66.11.01 not installed. unit. For help press The retainer sensor was not Check the cables. 66.12.14 66.12.20 activated.

  • Page 226

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message The output device is not attached At power-on, make sure that 67.X when the printer is turned on. the output device is attached correctly. Make sure that the JetLink connector is installed correctly.

  • Page 227

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message A printer error occurred where X is Turn off the printer, and then 69.X 69.X detailed below. turn the printer on to PRINTER ERROR The duplex mechanism failed continue.

  • Page 228

    Table 21. Numeric error messages (continued) Control panel Event-log Description Recommended action message error message The EIO accessory card in slot X Turn off the printer, and then 80.XXXX 80.XXXX encountered a critical error. turn the printer on again. EIO ERROR Reseat the EIO card.

  • Page 229: User- And Service-level Diagnostics, Paper-path Test, Service Test

    User- and service-level diagnostics The following sections describe diagnostics for the printer. Paper-path test The paper-path test can be used to verify that various paper paths are working correctly or to troubleshoot problems with tray configuration. To print a paper-path test Press to open the menus.

  • Page 230

    Table 22. Service test abnormality codes (continued) Code Description 0104 Tray 1 feed motor Tray 1 0105 Switchback motor Duplexer 0106 Duplex feed motor Duplexer 0107 Duplex feed motor 2 Duplexer 0108 Side registration motor Duplexer 0109 Pre-registration roller clutch Registration assembly 0110 Registration roller clutch...

  • Page 231: Service-level Diagnostics, Engine Test, Service Menu

    The service menu printer commands should be used only by authorized service personnel. The service menu can only be opened by using the PIN code 00900001 for the HP LaserJet 9000 series printers, 04904005 for the HP LaserJet 9040 series printers, or 09905004 for the HP LaserJet 9050 series printers.

  • Page 232: Diagnostics Flowchart

    Diagnostics flowchart Use this flowchart to help identify the cause of high-level printer problems for the HP LaserJet 9000, HP LaserJet 9000mfp, HP LaserJet 9000Lmfp, HP LaserJet 9040/9050, and HP LaserJet 9040mfp/ 9050mfp. These problems are indicated by abnormalities in the printer power-on sequence. The LED that the flowchart refers to is on the formatter.

  • Page 233: Other Diagnostics For The Hp Laserjet 9000, 9000mfp, And 9000lmfp, Cold Reset

    (the 5 button on MFPs) until INITIALIZE DISKS appears on the control-panel display. Press (the 6 button on MFPs). The printer boot sequence is complete when READY appears on the control-panel display. Other diagnostics for the HP LaserJet 9000, 9000mfp, and 9000Lmfp 217...

  • Page 234

    To initialize NVRAM or perform a skip disk Note The model number, the serial number, the usage data, and the error event log information is retained when performing a disk initialization. Turn off the printer. Press and hold (the 9 button on MFPs). Turn on the printer.

  • Page 235: Other Diagnostics For The Hp Laserjet 9040/9050, 9040mfp, And 9050mfp, Cold Reset

    Other diagnostics for the HP LaserJet 9040/9050, 9040mfp, and 9050mfp Cold reset Performing a cold reset clears all data from the printer memory and returns all of the default settings to the factory settings. CAUTION Performing a cold reset resets the Jetdirect configuration. To avoid making changes to your network configuration, remove the HP Jetdirect print server before performing a cold reset.

  • Page 236

    To initialize NVRAM or perform a skip disk Note The model number, the serial number, the usage data, and the error event log information is retained when performing a disk initialization. Turn off the printer. Turn on the printer. Wait until the printer begins counting memory. Press and hold (the 9 button on MFPs) until all three error lights illuminate.

  • Page 237: Tray 4 Diagnostics, Diagnostics Label, Motor Test

    Tray 4 diagnostics Tray 4 can run standalone diagnostics to test the device motors, functionality, and sensors. You need one power cord, one #2 Phillips screwdriver, and a small flatblade screwdriver for the DIP switches. Diagnostics label The following label is on the inside of the tray 4 back cover. Figure 123.

  • Page 238: Standalone Running Test, Sensor Test

    Standalone running test This test verifies that tray 4 is functioning correctly. For this test, use the LED that is located on the controller PCA on tray 4. Note If tray 4 is mounted underneath the printer, jams might occur because the printer will not pick up the media.

  • Page 239: Light-pattern Interpretation

    Table 24. DIP switch settings DIP switch Normal Motor test Stand-alone Sensor test running test Note Make sure that you turn the power supply off and set all the DIP switches to the off position (normal settings) when you finish the diagnostics, or the unit will not work correctly. Then, replace the back cover.

  • Page 240: Jam Troubleshooting

    Jam troubleshooting Jams occur either when media does not reach or does not clear a photosensor along the printer paper path in a specific amount of time. If a media jam occurs, a 13.xx PAPER JAM message appears on the printer control panel. The following table lists general questions that you should ask and topics that you should explore before troubleshooting.

  • Page 241: Jams, Customer Print Job, Clearing Jams

    If a single setting is not present in the program, but is set in the driver, it overrides the control-panel settings. Note HP Web Jetadmin can override media types and sizes in certain conditions. See the HP LaserJet 9000 Use Guide or the HP LaserJet 9040/9050 Use Guide for more information. Clearing jams Note Open and close all of the printer covers to clear the jam message.

  • Page 242: Evaluate The Information, Configuration, Evaluate The Information Pages, Configuration Page

    Evaluate the information pages From the printer control panel, print pages that give details about the printer and its current configuration. The following information pages are available: Configuration page • If JetDirect card is installed, a Jetdirect page is also generated. File directory page Usage page File directory page...

  • Page 243

    Figure 124. Sample configuration page Note If an HP Jetdirect EIO card is installed, an HP Jetdirect configuration page also prints out. Evaluate the information pages 227...

  • Page 244: Verify Installed Options

    Verify installed options In the installed personalities and options section on the configuration page, look for options such as hard disk information, DIMM types (RAM or ROM), and DIMM sizes. Make sure that the options installed in the printer are reflected in the configuration page. If an installed device is not shown on the configuration page, see table 27 for recommended actions.

  • Page 245: Jetdirect, Jetdirect Page

    Jetdirect page Use the Jetdirect page to view current network settings, to help troubleshoot printer problems, or to verify network statistics or protocol information. Jetdirect page elements HP Jetdirect configuration Network statistics Protocol information Figure 125. Sample Jetdirect configuration page Evaluate the information pages 229...

  • Page 246: Supplies Status, Supplies Status Page

    Supplies status page Use the supplies status page to view current printer supply status, to help troubleshoot printer problems, or to verify printer information. Supplies status page elements Supplies ordering information Cartridge information Other supplies information Printer information Figure 126. Sample supplies status page 230 Chapter 7 Troubleshooting...

  • Page 247: Usage, Usage Page

    Usage page The usage page is designed to fit into a pay-per-page (PPP) model. A reseller can configure the usage page with instructions for a customer to send the information back to the reseller in order to prepare bills. Print a usage page from the printer control panel (or gain access to the information remotely from HP Web Jetadmin) to determine how many simplex or duplex pages of each media size are scanned on the copy module and printed on the printer.

  • Page 248: File Directory, File Directory Page

    File directory page Use the file directory page to view current directory structures, to help troubleshoot printer problems, or to verify storage capabilities. File directory page elements Directory information Figure 128. Sample file directory page 232 Chapter 7 Troubleshooting...

  • Page 249: Image-formation Troubleshooting

    The print sample also helps clarify the customer’s description of the problem. Often an image-formation problem is linked to media that is outside the specifications Hewlett-Packard establishes for optimum printer performance. See "Media troubleshooting" on page for help with persistent image-formation problems.

  • Page 250: Check The Print Cartridge, Economode, Skew

    Check the print cartridge Image-formation defects often result from problems with the print cartridge. Use the following list to verify that the print cartridge is operating correctly. Perform all of the following checks before replacing the print cartridge. Make sure that the print cartridge contains toner. •...

  • Page 251: Image-defect Tables

    Image-defect tables The printer output quality is subject to customer judgment. This section helps define print-quality defects and the factors that affect print quality. The print samples shown illustrate some print-quality defects. Keep copies of print-quality defects that you encounter in the field, and an explanation of their causes, to use for future reference. Figure 129.

  • Page 252

    Table 29. Image defects Problem Cause Solution Black page The high-voltage power supply Clean the high-voltage power supply connections are contaminated. terminals. Clean the high-voltage springs where they contact the print cartridge. The high-voltage power supply is Remove the high-voltage power supply installed incorrectly.

  • Page 253

    Table 29. Image defects (continued) Problem Cause Solution Wrinkles or creases The media does not meet printer Print a few more pages to see if the specifications or is stored incorrectly. problem corrects itself. Turn over the stack of media in the tray. °...

  • Page 254

    Table 29. Image defects (continued) Problem Cause Solution Contamination on back Contamination inside printer (for Print at least 10 pages to see if the example, tray separation roller, feed problem goes away. roller, transfer charging roller, fuser, Print a cleaning page. See "Create a print cartridge) exists.

  • Page 255

    Table 29. Image defects (continued) Problem Cause Solution Bubbles A drum ground path does not exist. Check the drum ground spring and reconnect it, if necessary. Replace the high-voltage power supply. Note With no ground path, the drum cannot discharge. The negative charge on the drum repels toner and leaves the page with bubble print.

  • Page 256

    Table 29. Image defects (continued) Problem Cause Solution Light print, dark print, or The toner density setting is incorrect. From the configure device menu on the fade control panel, adjust the toner density setting (make sure EconoMode is off). The transfer charging roller is Replace the transfer charging roller.

  • Page 257

    Table 29. Image defects (continued) Problem Cause Solution Page skew The media does not meet printer Print a few more pages to see if the specifications or is stored incorrectly. problem corrects itself. Turn over the stack of media in the tray. °...

  • Page 258

    Table 29. Image defects (continued) Problem Cause Solution Vertical dots The static charge eliminator teeth are Clean the static charge eliminator. contaminated. Poor contact exists between the static Clean the contacts, if contaminated. If the charge eliminator and the high- problem persists after cleaning, or parts voltage power supply.

  • Page 259: Repeating Defect Ruler

    Repeating defect ruler Repetitive print defects are usually caused by a specific roller in the printer or the print cartridge. Use the following figure to isolate the cause of repetitive print defects. Align the first occurrence of the defect with the top of the “ruler” (at the top or bottom of the misprinted page), and measure to the next occurrence of the defect to determine which roller is causing the defect.

  • Page 260: Media Troubleshooting, Determine The Problem Source: Media Or Printer, Isolate A Paper Path

    Media troubleshooting Media defects can cause jams and image defects. If the previously described conditions are corrected and do not eliminate the printing problem, continue to investigate the media as the source of the defect. Problems with media are sometimes difficult to detect. Follow a standard troubleshooting procedure to help isolate media-related problems.

  • Page 261: Isolate A Media Brand, Isolate A Media Type

    When jams and other problems occur frequently, it is often because the customer is using a special media. Customers must only use media that conforms to all Hewlett-Packard specifications, and should always test media before purchasing large quantities. Media should be tested before storage to verify quality printing results.

  • Page 262: Communication Troubleshooting, Communications Check, Jetdirect Configuration

    Communications check Note Communication problems are normally the customer’s responsibility. Time spent attempting to resolve these problems might not be covered by the Hewlett-Packard warranty. Refer the customer to the network administrator for assistance in troubleshooting network problems. Test message After the printer is installed, verify communications between the printer and the IBM-compatible computer.

  • Page 263

    Embedded LAN troubleshooting (HP LaserJet 9040n/9050n, HP LaserJet 9040dn/9050dn, HP LaserJet 9050mfp, and HP LaserJet 9040mfp only) Although networking is integrated, the embedded LAN has additional features to assist in troubleshooting. These include the following features: The ability to turn on and turn off the embedded networking. An internal diagnostic to check the networking hardware.

  • Page 264

    Ping test Perform a ping test to check for network connectivity. A ping test is designed to troubleshoot TCP/IP network connectivity issues by taking key parts of the functionality from the ping utility on Microsoft Windows systems. All Jetdirect products can respond to ping requests, but the embedded LAN can initiate ping requests.

  • Page 265

    (the 3 button on MFPs) to scroll to the appropriate (the 9 button on MFPs) or selection (COLD RESET, SELECT LANGUAGE, NEW MAINTENANCE KIT, or ENABLE/DISABLE EMBEDDED LAN). Note Other functions are available in this menu, but are not applicable to the LAN. Press (6 key on MFPs).

  • Page 266

    Connectivity problems Use the following procedure if the printer and the network configuration page are correct, but the network printer connectivity is not working. Print a network configuration page. Click Embedded Networking. On the Diagnostics menu, click Loopback Test. On the Loopback Test menu, click Execute. This begins a continuous diagnostic that can only be stopped by using a power-cycle.

  • Page 267: Wiring Diagrams

    Wiring diagrams Figure 131. Printer wiring diagram (HP LaserJet 9000 series printer) Wiring diagrams 251...

  • Page 268

    Figure 132. Printer wiring diagram (HP LaserJet 9040/9050 series printer) 252 Chapter 7 Troubleshooting...

  • Page 269

    Figure 133. Tray 4 wiring diagram Wiring diagrams 253...

  • Page 270

    254 Chapter 7 Troubleshooting...

  • Page 271: 8 Parts And Diagrams

    Parts and diagrams Chapter contents Introduction ..............256 Ordering parts.

  • Page 272: Ordering Parts, Introduction

    All standard part numbers listed are stocked and can be ordered from HP’s Customer Services and Support Organization (CCSO). See "Parts and supplies" in chapter 1. Consumables and accessories like those listed in table 30 can be ordered from Hewlett-Packard. See "Parts and supplies" in chapter 1.

  • Page 273: Consumables, Supplies, Accessories, Frus, And Documentation

    C9153A C9153-67904 C9153-69004 PM kit/220 V FRUs C7860A C8519-67901 C8519-69001 Formatter assembly HP LaserJet 9000 Q3721-67901 Q3721-69001 Formatter assembly HP LaserJet 9040/ (Note: Do not replace the 9050 base formatter and the Compact Flash firmware at the same time) Q3722-67901...

  • Page 274

    512MB DDR DIMM HP LaserJet 9040/ 9050 series only C4103A C4103-67901 HP Fast InfraRed Connect pod HP LaserJet 9000 C4293A Font DIMM—simplified Chinese HP LaserJet 9000 C4292A Font DIMM—traditional Chinese HP LaserJet 9000 J6054B J6054-61031 J6054-69031 Hard disk HP LaserJet 9000...

  • Page 275

    HP Jetdirect Print Server Administrator’s Guide 5969-3412 HP Jetdirect Print Server Jetadmin Setup Guide Q5693-90002 Paper Handling Accessories Service Addendum C8519-90901 HP LaserJet 9000 Start Guide— U.S. C8519-90902 HP LaserJet 9000 Start Guide— Americas C8519-90903 HP LaserJet 9000 Start Guide— West Europe C8519-90904 HP LaserJet 9000 Start Guide—...

  • Page 276

    Table 30. Consumables, supplies, accessories, FRUs, and documentation (continued) Product number Service Exchange Description Printer number number C8519-60104 HP LaserJet 9000 Series Printer Software CD-ROM—Europe C8519-60105 HP LaserJet 9000 Series Printer Software CD-ROM—Asia C8519-60106 HP LaserJet 9000 Series Printer Service...

  • Page 277: Common Hardware

    Common hardware Table 31. Hardware table Example Description Sizes Uses Screw M3 by 6 mm Various M3 by 8 mm M4 by 8 mm M4 by 10 mm Screw, tapping M3 by 6 mm To hold plastic to metal M3 by 8 mm (excluding the control panel) M3 by 30 mm M4 by 6 mm...

  • Page 278: Illustrations And Parts Lists, External Covers And Panels

    Illustrations and parts lists The following illustrations and parts tables list the field replaceable units (FRUs) for this printer. Two tables at the end of this chapter list all of the parts shown in this chapter: table 54, “Alphabetical parts list,”...

  • Page 279

    Table 33. Printer external covers and panels Description 9000 part number 9040/9050 part number (if different) Cover, right top RB2-5659-000CN Cover, left top RB2-5660-000CN Cap, right cover RB2-5675-000CN Cover, tray 1 blanking RB2-5676-000CN Cover, right rail RB2-5682-000CN Cover, left rail RB2-5683-000CN Cover, right back RB2-5684-000CN...

  • Page 280

    Left door and diverter Figure 135. Left door and diverter Table 34. Left door and diverter Description 9000 part number 9040/9050 part number (if different) Left door and diverter RG5-5646-050CN Diverter assembly RG5-5647-050CN Damper assembly RG5-5648-000CN Screw, M4 by 10 XA9-1189-000CN Cover, left (left door) RB2-6007-000CN...

  • Page 281: Right Cover Assembly

    Right cover assembly Figure 136. Right cover assembly Illustrations and parts lists 265...

  • Page 282: Internal, Internal Components

    Internal Internal components Figure 137. Internal components (1 of 4) 266 Chapter 8 Parts and diagrams...

  • Page 283

    Table 36. Internal components (1 of 4) Description 9000 part number 9040/9050 part number (if different) Guide, pickup RB2-5522-000CN Guide, cartridge RB2-5526-000CN Hinge mount, damper RB2-5570-020CN Hinge arm, front cover RB2-5654-000CN Cover, right door, inside RB2-5697-000CN Knob, registration, jam removal RB2-5845-000CN Front inside cover assembly RG5-5721-000CN...

  • Page 284

    Figure 138. Internal components (2 of 4) 268 Chapter 8 Parts and diagrams...

  • Page 285

    Table 37. Internal components (2 of 4) Description 9000 part number 9040/9050 part number (if different) Front fusing mount RB2-5517-000CN Front fusing rail RB2-5515-000CN Back fusing rail RB2-5516-000CN Back fusing mount RB2-5518-000CN Spring, leaf RB2-5523-000CN Screw, M3 by 6 XA9-1275-000CN Fuser connector holder assembly RG5-5724-020CN Fuser power cable...

  • Page 286

    Figure 139. Internal components (3 of 4) 270 Chapter 8 Parts and diagrams...

  • Page 287

    Table 38. Internal components (3 of 4) Description 9000 part number 9040/9050 part number (if different) Screw, M3 by 6, RS XA9-1275-000CN Screw, M3 by 8, RS XA9-1276-000CN Latch mount assembly RG5-5704-000CN End paper sensor assembly RG5-5699-000CN Upper cable guide assembly RG5-7787-000CN Fan, #5, cartridge fan RH7-5306-000CN...

  • Page 288

    Figure 140. Internal components (4 of 4) 272 Chapter 8 Parts and diagrams...

  • Page 289

    Table 39. Internal components (4 of 4) Description 9000 part number 9040/9050 part number (if different) Low voltage power supply assembly 110 V RG5-5730-000CN RG5-7778-000CN Low voltage power supply assembly 220 V RG5-5731-000CN RG5-7779-000CN Cable, HVPS flat ribbon RH2-5445-000CN Fan, #1, power supply RH7-5294-000CN Fan, #2, controller RH7-5295-000CN...

  • Page 290: Drum Feed Drive Assembly

    Drum feed drive assembly Figure 141. Drum feed drive assembly 274 Chapter 8 Parts and diagrams...

  • Page 291: Fuser Delivery Drive Assembly

    Fuser delivery drive assembly Figure 142. Fuser delivery drive assembly Table 41. Fuser delivery drive assembly Description 9000 part number 9040/9050 part number (if different) Fuser delivery drive assembly RG5-5659-000CN RG5-7789-000CN Screw, M3 by 6, RS XA9-1275-000CN Lever, switch RB2-6077-000CN Motor, DC, 24V (M1) RG5-5288-000CN RH7-1622-000CN...

  • Page 292: Cartridge Lifter Assembly

    Cartridge lifter assembly Figure 143. Cartridge lifter assembly Table 42. Cartridge lifter assembly Description 9000 part number 9040/9050 part number (if different) Cartridge lifter assembly RG5-5741-020CN Spring, tension RS6-2298-020CN Screw, M3 by 6 XA9-1275-000CN 276 Chapter 8 Parts and diagrams...

  • Page 293: Sheet Trays (tray 2 And Tray 3), Sheet Trays (tray 2 And Tray)

    500-sheet trays (tray 2 and tray 3) Figure 144. 500-sheet trays (tray 2 and tray 3) Table 43. 500-sheet trays (tray 2 and tray 3) Description 9000 part number 9040/9050 part number (if different) 500-sheet trays RG5-5635-080CN Custom/standard switch RB2-5813-000CN Spring, torsion RB2-5816-000CN Screw, W/W, M3 by 29.5...

  • Page 294: Paper Input Unit

    Paper input unit Figure 145. Paper input unit 278 Chapter 8 Parts and diagrams...

  • Page 295

    Registration assembly Figure 146. Registration assembly Table 45. Registration assembly Description 9000 part number 9040/9050 part number (if different) Registration assembly RG5-5663-000CN Internal 279...

  • Page 296: Transfer Roller Assembly

    Transfer roller assembly Figure 147. Transfer roller assembly Table 46. Transfer roller assembly Description 9000 part number 9040/9050 part number (if different) Transfer roller assembly RG5-5662-000CN Holder, transfer RG5-5653-000CN Roller, transfer RF5-3319-000CN Guide, transfer/pre-transfer RG5-5654-000CN 280 Chapter 8 Parts and diagrams...

  • Page 297

    Delivery assembly Figure 148. Delivery assembly Internal 281...

  • Page 298

    Table 47. Delivery assembly Description 9000 part number 9040/9050 part number (if different) Delivery assembly RG5-5643-030CN Delivery cross member assembly RG5-5645-000CN Delivery PCA RG5-5649-000CN Flag, sensor RB2-6037-000CN Lever, sensor RB2-6035-000CN Screw, M3 by 8 XA9-1276-000CN Fan, #3, rear delivery RH7-5296-000CN Fan, #4, front delivery RH7-5297-000CN Fan, #6, face down tray...

  • Page 299: Pca Assembly Location

    PCA assembly location Figure 149. PCA assembly location Table 48. PCA location Description 9000 part number 9040/9050 part number (if different) DC controller PCA RG5-5778-120CN RG5-7780-000CN Delivery PCA RG5-5649-000CN Print cartridge memory controller PCA RG5-6996-000CN Paper pickup (PIU) PCA RG5-5678-000CN Internal 283...

  • Page 300: Tray 4 Main Body, Tray

    Tray 4 Tray 4 main body Figure 150. Tray 4 main body (1 of 2) 284 Chapter 8 Parts and diagrams...

  • Page 301

    Table 49. Tray 4 main body (1 of 2) Description 9000 part number 9040/9050 part number (if different) Cover, front RB2-7648-040CN Cover, right RB2-7649-000CN Cover, right back RB2-7650-000CN Cover, left back RB2-7651-000CN Cover, center RB2-7652-000CN Cover, back RF5-3644-000CN Cover, left RF5-3645-000CN Screw, stepped RS5-9099-000CN...

  • Page 302

    Figure 151. Tray 4 main body (2 of 2) 286 Chapter 8 Parts and diagrams...

  • Page 303

    Table 50. Tray 4 main body (2 of 2) Description 9000 part number 9040/9050 part number (if different) Caster, back RB2-7678-020CN Caster, front swivel RB3-0304-040CN Screw, M5 by 12 XA9-0912-000CN Switch assembly (SW21) RG5-6206-020CN Paper size sensing assembly RG5-6207-040CN Screw, M4 by 8, RS XA9-0732-000CN Paper volume sensing assembly RG5-6229-030CN...

  • Page 304: Tray 4 Drive Assembly

    Tray 4 drive assembly Figure 152. Tray 4 drive assembly Table 51. Tray 4 drive assembly Description 9000 part number 9040/9050 part number (if different) Tray 4 deck drive assembly RG5-6228-040CN Motor RH7-1481-000CN Screw, M3 by 6 with washer XB2-6300-607CN 288 Chapter 8 Parts and diagrams...

  • Page 305: Tray 4 Pca Location

    Tray 4 PCA location Figure 153. Tray 4 PCA location Table 52. Tray 4 PCA location Description 9000 part number 9040/9050 part number (if different) Paper size PCA RG5-6238-000CN Paper volume PCA RG5-6237-000CN Deck controller PCA RG5-6235-120CN LED PCA RG5-6239-000CN Tray 4 289...

  • Page 306

    Tray 1 Figure 154. Tray 1 assembly Table 53. Tray 1 assembly Description 9000 part number 9040/9050 part number (if different) Tray 1 C8568-67902 Tray assembly RG5-5809-000CN Service cover assembly RG5-5811-040CN Roller, pickup RF5-3403-000CN Roller, separation RF5-3404-000CN Cover hooks RB2-6537-000CN 290 Chapter 8 Parts and diagrams...

  • Page 307: Alphabetical Parts List

    RB2-5639-000CN Figure 138 on page 268 Back cable holder assembly (HP LaserJet 9040/9050) RG5-7786-000CN Figure 140 on page 272 Back cable holder assembly (HP LaserJet 9000) RG5-5725-030CN Figure 140 on page 272 Back cover assembly RG5-5701-000CN Figure 134 on page 262...

  • Page 308

    RG5-5751-170CN Figure 138 on page 268 Fuser delivery drive assembly (HP LaserJet 9040/9050) RG5-7789-000CN Figure 142 on page 275 Fuser delivery drive assembly (HP LaserJet 9000) RG5-5659-000CN Figure 142 on page 275 Fuser high-voltage cable RG5-5772-000CN Figure 138 on page 268...

  • Page 309

    Table 54. Alphabetical parts list (continued) Description Part number Figure and page Fusing jam clearing assembly RG5-5700-000CN Figure 137 on page 266 Fusing power cable RG5-5771-000CN Figure 138 on page 268 Gear, 21T RS5-0708-000CN Figure 138 on page 268 Guide, cartridge RB2-5526-000CN Figure 137 on page 266 Guide, pickup...

  • Page 310

    Table 54. Alphabetical parts list (continued) Description Part number Figure and page Motor, DC, 24V (M1) (HP LaserJet 9000) RG5-5288-00CN Figure 142 on page 275 Mount, back fusing RB2-5518-000CN Figure 138 on page 268 Mount, damper RB2-5570-000CN Figure 137 on page 266...

  • Page 311

    Table 54. Alphabetical parts list (continued) Description Part number Figure and page Screw, M3 by 8, RS XA9-1276-000CN Figure 138 on page 268 Screw, M3 by 8, RS XA9-1276-000CN Figure 139 on page 270 Screw, M3 by 8, RS XA9-1276-000CN Figure 140 on page 272 Screw, M4 by 6 XA9-0994-000CN...

  • Page 312: Numerical Parts List

    Numerical parts list Table 55. Numerical parts list Part number Description Figure and page 0515-4318 Tray 4-to-engine stabilizing screws Figure 150 on page 284 5851-1391 Label, custom/standard switch Figure 144 on page 277 RB1-6421-000CN Foot, right side Figure 137 on page 266 RB2-5515-020CN Rail, front fusing Figure 138 on page 268...

  • Page 313

    Cover, back Figure 150 on page 284 RF5-3645-000CN Cover, left (tray 4) Figure 150 on page 284 RG5-5288-000CN Motor, DC, 24V (M1) (HP LaserJet 9000) Figure 142 on page 275 RG5-5635-080CN Tray, 500-sheet Figure 144 on page 277 RG5-5643-030CN Delivery feed assembly...

  • Page 314

    Guide, transfer/pre-transfer Figure 147 on page 280 RG5-5656-050CN Drum feed drive assembly Figure 141 on page 274 RG5-5659-000CN Fuser delivery drive assembly (HP LaserJet 9000) Figure 142 on page 275 RG5-5662-000CN Transfer roller assembly Figure 147 on page 280 RG5-5663-000CN...

  • Page 315

    Figure 141 on page 274 RH7-5294-000CN Fan, #1, power supply Figure 140 on page 272 RH7-5295-000CN Fan, #2, controller (HP LaserJet 9000) Figure 140 on page 272 RH7-5296-000CN Fan, #3, rear delivery Figure 148 on page 281 Numerical parts list 299...

  • Page 316

    Table 55. Numerical parts list (continued) Part number Description Figure and page RH7-5297-000CN Fan, #4, front delivery Figure 148 on page 281 RH7-5302-000CN Fan, #6, face down tray Figure 148 on page 281 RG7-5306-000CN Fan, #5, cartridge fan Figure 139 on page 270 RS5-0708-000CN Gear, 21T Figure 138 on page 268...

  • Page 317

    Index Symbols * (asterisk), next to control panel selections 31 Back arrow, control panel 31 back assemblies, removing 135 back covers, removing Numerics left 108 2,000-sheet input tray. See tray 4 printer 109 3,000-sheet stacker tray 4 153 communications, troubleshooting 228 back of page contamination, troubleshooting 238 Install guide 259 back view, diagrams 100...

  • Page 318

    cartridges control panel capacity 2, 4 blank, troubleshooting 174 checking 234 Configure device menu 41 components, operations 85 configuring trays 172 EconoMode 45, 68 Diagnostics menu 54 error messages 181 EIO menu 49 handling 67 error messages, alphabetical list 180 image formation operations 84 error messages, numerical list 188 level detection operations 79, 86...

  • Page 319

    door open jams 88 DOOR OPEN sequence of operations 73 dark pages, troubleshooting 236, 240 doors, removing dark setting, toner density 45 left 107, 264 data communication operations 81 right 105 Data light, locating 30 DOS prompt, communications test 246 data transmission settings 48 dots per inch (dpi) date, setting 46...

  • Page 320

    envelopes feed rollers default image size, setting 41 image defects, troubleshooting 238 fuser lever positioning 237 included in printer maintenance kit 60 output path 244 removing 122 sizes supported 26 tray 1 93, 94 specifications 19 tray 4 96, 155 storing 23 feed sensors, tray 2 or 3 90 wrinkled, troubleshooting 172...

  • Page 321

    88 connector, locating 11 delivery sensor (PS502) 88, 90 connector, removing 146 delivery-drive assembly, removing 149 HP LaserJet 9000 Series Printer software CD-ROM 260 error messages 205 HP Web JetAdmin image defects, troubleshooting 240, 241, 242 configuring trays from 172...

  • Page 322

    258 laser/scanner main heater (H1), operations 80 operations 83 main motor, operations 84 removing 112 maintenance kits voltage 80 installation guide 260 LaserJet 9000 Series Printer software CD-ROM 260 part numbers 257 latent image formation 84 replacing 60 Index306 Index...

  • Page 323

    manual feed model number 6 control panel settings 42 models, printer 2, 4, 6 error messages 183 modes manuals, part numbers 259 fuser 40, 44 map, control panel menus 37 Sleep 46 map, menu 38 moisture margins, settings 44 environmental specifications, printer 8 media storing media 22 coated 22...

  • Page 324

    operating environment paper acclimating to 170 coated 22 print cartridges 67 configuring trays 172 printer, specifications 8, 16 default image size, setting 41 operations detection operations 87, 96 bias generation circuits 79 error messages 185, 204 DC controller 76 fuser modes 40, 44 engine control system 75 level detection operations 87, 96 formatter 81...

  • Page 325

    photosensitive drum preprinted paper, fuser mode 44 bias generation 79 prepunched paper, fuser mode 44 cleaning process, image formation operations 85 pre-registration roller drive clutch (CL2) 92 feed drive assembly, diagrams and part numbers 274 pressure roller ground path, troubleshooting 239 bias generation 79 image defects, troubleshooting 234 cleaning 65...

  • Page 326

    private jobs replacement parts control panel settings 38 ordering 14 timeout settings 46 removing and replacing 99 production code, locating 6 replacing programs, changing settings from 33 parts 99 proof and hold jobs printer maintenance kit 60 control panel settings 38 reports timeout settings 46 configuration 226...

  • Page 327

    47, 178 smears, troubleshooting 241 status, supplies information page smudges, horizontal 239 printing 38 software using 230 HP LaserJet 9000 Series Printer CD-ROM 260 STBY (standby) sequence 71 settings 33 Stop button, control panel 31 stopped printing, troubleshooting 171 Index Index311...

  • Page 328

    stored jobs toner control panel settings 38 bubbles, troubleshooting 239 timeout settings 46 cleaning spilled 61 storing coverage, usage page information 231 envelopes 23 density settings 45 media 22 first aid measures 61 print cartridges 67 image formation operations 84 printer 8 level detection operations 79 straight paper path, using 244...

  • Page 329

    tray 2 or 3 trays See also trays capacities 26 configuring 173 configuration page information 228 diagrams and part numbers 277 detectable size error messages 182 feeding, troubleshooting 171 feeding, troubleshooting 171, 172 guides, adjusting 224 included 2 jam detection operations 88 jams, error messages 188, 199 locating 10 jams, troubleshooting 224...

  • Page 330

    vertical dots, troubleshooting 242 vertical line spacing settings 43 vertical lines, troubleshooting black 241 white 242 vertical transfer assembly, part numbers 258 vertical transfer door, locating 10 viewing event log 177 voltage AC 80 high-voltage power supply check 220 part numbers 256 specifications 7 tray 1 power supply 93 tray 4 power supply 95...

  • Page 332

    © 2005 Hewlett-Packard Development Company, L.P. www.hp.com *Q3721-90963* *Q3721-90963* Q3721-90963...

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