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Service Manual
HP LaserJet 4V / 4MV
(C3141A / C3142A)

Summary of Contents

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    Service Manual HP LaserJet 4V / 4MV (C3141A / C3142A)

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    To avoid electrical shock, All Rights Reserved. use only supplied power Reproduction, adaptation, or Hewlett-Packard makes no cords and connect only to translation without prior warranty of any kind with properly grounded (3-hole) written permission is regard to this material, wall outlets.

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    Conventions This manual uses the following conventions: Color is used to emphasize items which are important to the material under discussion. The names of major printer parts and assemblies are Capitalized. Bold is used for emphasis, particularly in situations where italic type would be confusing.

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    Chapter Descriptions Product Information Orientation to the printer, as well as the service and repair philosophy is discussed. Information on obtaining assistance and warranty is also here. Site Requirements Here are recommendations pertaining to installation requirements. Operating Overview This chapter has detailed information about the Control Panel. Sample self tests and printer reset information are also included.

  • Page 5: Table Of Contents

    List of Figures Figure 1-1 Sample Model and Serial Number Labels ..1-5 Figure 1-2 Front and Rear Side View ....1-11 Figure 1-3 Rear and Left Side View .

  • Page 6: Table Of Contents

    Figure 6-17 Main Drive Assembly Removal (2 of 2) ... 6-23 Figure 6-18 Drum Drive Assembly ....6-24 Figure 6-19 Transfer Roller Assembly .

  • Page 7: Table Of Contents

    List of Tables Table 1-1 Printer Features ..... . . 1-3 Table 1-2 Paper Capacities and Sizes ....1-4 Table 1-3 Printer Dimensions .

  • Page 8: Table Of Contents

    Table 7-16 Faulty Registration ..... . 7-29 Table 7-17 Smeared Print ......7-30 Table 7-18 Compressed Print .

  • Page 9: Table Of Contents

    Product Information Chapter Contents Printer Features ......1-3 Paper Capacities and Sizes ......1-4 Identification .

  • Page 10: Table Of Contents

    Technical Assistance ......1-20 HP AUDIO-TIPS ......1-20 HP FIRST .

  • Page 11: Table 1-1 Printer Features, Printer Features

    Printer Features Table 1-1 Printer Features Features LaserJet 4V LaserJet 4MV (C3141A) (C3142A) Print Speed 16 ppm letter or A4 16 ppm letter or A4 8 ppm ledger (11x17) or A3 8 ppm ledger (11x17) or A3 Text & Graphics Resolution 600 dpi;...

  • Page 12: Table 1-2 Paper Capacities And Sizes, Paper Capacities And Sizes

    Paper Capacities and Sizes Table 1-2 Paper Capacities and Sizes Name Product Capacity Basis Size Range Number Weight MP Tray 100 sheets 17 to 28 pounds Maximum 11.7 x 17.7 in. (64 to 105 g/m2) (297 x 450 mm) Minimum 3.9 x 5.8 in.

  • Page 13: Figure 1-1 Sample Model And Serial Number Labels, Identification, Model And Serial Numbers

    Revision Level, the Production Code, and production number of the printer. The rear labels also contain power rating and regulatory information as shown in Figure 1-1. Figure 1-1 C3141A C3141A POWER RATING: HEWLETT-PACKARD 11311 CHINDEN BLVD. 220-240V 50 Hz, 2.8A BOISE, IDAHO 83714 U.S.A. MANUFACTURED: XXXXXXXX SERIAL NO.:...

  • Page 14: Table 1-3 Printer Dimensions, Table 1-4 Electrical Specifications, Specifications

    Specifications This section contains information on physical and electrical characteristics of the printer. For information on printer site requirements (such as operating temperature and humidity, ventilation, etc.) see Chapter 2. Table 1-3 Printer Dimensions Description Dimension Width 18 in. (46 cm) Depth 23 in.

  • Page 15: Table 1-5 Acoustic Emissions

    Table 1-5 Acoustic Emissions Operation position (per ISO 9296) Printing dB(A) 55 db Standby dB(A) 38 db Power Save dB(A) 33 db Bystander 1m (per ISO 9296) Printing dB(A) 51 db Standby dB(A) 34 db Power Save dB(A) 29 db Sound Power (per ISO 9296) Printing 6.6 bels (A)

  • Page 16: Media Selection Guidelines, Paper, Envelopes

    Media Selection Guidelines More detailed specifications are in the HP LaserJet Printer Family Paper N O T E Specification Guide, HP Part No. 5002-1801 (See “Related Documentation and Training Media” later in this chapter). Paper To achieve the best possible print quality and avoid paper jams, follow these guidelines for selecting paper: Use only copier grade paper that meets all specifications in the paper specification guide.

  • Page 17: Adhesive Labels, Transparencies

    N O T E The MP Tray is recommended for printing adhesive labels. A wide selection of suitable labels is available through Hewlett-Packard. A list of available sizes is located in the HP LaserJet Printer Family Paper Specification Guide, HP Part No. 5002-1801.

  • Page 18: Storing Print Media, Shipping Print Media

    Storing Print Media Follow these guidelines when stacking and storing print media: Store paper in its ream wrapper until ready to use. DO NOT store cartons or reams directly on the floor where they will absorb a higher moisture content. Instead, place cartons on a pallet or on shelves. DO NOT store individual reams in a manner that causes them to curl or warp along the edges.

  • Page 19: Product Overview, External Assembly Locations (1 Of 2)

    Product Overview External Assembly Locations (1 of 2) Figure 1-2 Front and Right Side View with MP Tray Open Front Cover Control Panel Output Bin Adjustable Paper Stop 250 sheet ledger (11x17) or A3 Paper Cassette ON/OFF Switch 250 sheet Letter or A4 Paper Cassette Front Cover Release Button Multipurpose (MP) Tray MP Tray Extension...

  • Page 20: Figure 1-3 Rear And Left Side View, External Assembly Locations (2 Of 2)

    External Assembly Locations (2 of 2) Figure 1-3 Rear and Left Side View Optional 42.8 Mbyte Disk Accessory Location Parallel Bi-Tronics Interface SIMM Slots Multiple I/O (MIO) slot Power Supply Connector Dust Cover for 250 sheet ledger (11x17) or A3 Paper Cassette Serial Number Plate Optional Universal Lower Cassette Connector Access 1-12 Product Information...

  • Page 21: Figure 1-4 Front View With Front Cover Open, Front Door Assemblies

    Front Door Assemblies Figure 1-4 Front View with Front Cover Open (with toner cartridge removed) 1ASYDOOR Print Density Dial Arrow guide for installing toner cartridge in printer Toner cartridge cavity Fusing Assembly Registration Roller Transfer Roller Multipurpose (MP) Tray Product Information 1-13...

  • Page 22: Internal Assembly Locations (1 Of 2)

    Internal Assembly Locations (1 of 2) Figure 1-5 Internal Assembly Locations (1 of 2) Card Cage Assembly Main Motor Power Supply Unit Fusing Assembly Cable Main Drive Assembly Cassette Pickup Roller Clutch Registration Roller Clutch Front Door Cassette Pickup Roller (under plate) Exhaust Fan (FM1) Delivery Assembly 1-14 Product Information...

  • Page 23: Internal Assembly Locations (2 Of 2)

    Internal Assembly Locations (2 of 2) Figure 1-6 1ASSYSEC Internal Assembly Locations (2 of 2) Output Bin Delivery Assembly Fusing Rollers Transfer Roller Standard Paper Cassette Optional Lower Paper Cassette Cassette Pickup Roller Toner Cartridge Product Information 1-15...

  • Page 24: Service Approach, Ordering Parts, Phone Numbers For The Various Sources Are:, Exchange Program, Consumables

    Chapter 8 and can be ordered through Parts Direct Ordering (PDO), or Support Materials Europe (SME). Consumables The printer has no consumables other than the toner cartridge, which may be ordered directly from Hewlett-Packard. Refer to Chapter 8 for ordering information. 1-16 Product Information...

  • Page 25: Figure 1-7 Sample 5% Page Coverage, Toner Cartridge Life

    Toner Cartridge Life The toner cartridge (C3900A) is designed to simplify replacement of the major “consumable” parts. The toner cartridge contains the printing mechanism and a supply of toner. At 5% page coverage, a toner cartridge will print approximately 7500 pages (see Figure 1-7).

  • Page 26: Refilled Toner Cartridges, Recycling Toner Cartridges

    Repairs resulting from the use of refilled toner cartridges are not covered under the Hewlett-Packard warranty or maintenance contract. Hewlett-Packard has no control or process to ensure that a refilled toner cartridge functions at the high level of reliability of a new HP LaserJet toner cartridge.

  • Page 27: Table 1-6 Related Documentation, Related Documentation And Training Media

    Related Documentation and Training Media Table 1-6 lists where to order related documentation. See “Ordering Parts” earlier in this chapter. Table 1-6 Related Documentation Description Part Number SMO SME HPD HP LaserJet Family Quick Reference 5961-0531 Service Guide HP LaserJet 4V and 4MV Printers C3141-90901 User’s Manual HP PCL5 Printer Language Technical...

  • Page 28: Technical Assistance, Hp Audio-tips, Hp First, Hp First, U.s, Hp First, Europe

    Technical Assistance HP ASAP (Automated Support Access Program) provides free technical support information 24 hours a day, 7 days a week. The ASAP system includes HP AUDIO-TIPS and HP FIRST, both explained below. The ASAP service requires a touchtone phone. HP AUDIO-TIPS HP AUDIO-TIPS is an interactive voice response system providing prerecorded answers to the most frequently asked questions by HP LaserJet...

  • Page 29: Hp Compuserve Forum, North American Response Center (narc), Other Areas

    HP CompuServe Forum CompuServe members can download a variety of support materials including product data sheets, software application notes, and printer drivers for many popular software applications. Members may also post and reply to questions in an interactive format. To access the HP Forum, type GO HP at any prompt.

  • Page 30: Warranty Statement, Warranty, One Year Return To Hp Authorized Repair Station, Exclusions

    Use of non-HP toner cartridges (see the following explanation), SIMM memory boards, or interface boards. The use of non-Hewlett-Packard toner cartridges does not affect either the warranty or any maintenance contract purchased from HP. However, if an HP LaserJet printer failure or if printer damage is found to be directly attributable to the use of any non-HP product, the repair will not be covered under the warranty or HP maintenance contract.

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    Site Requirements Chapter Contents Operating Environment ......2-3 Space Requirements ......2-4 Environmental Requirements .

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    2-2 Site Requirements...

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    Operating Environment The environmental specifications (listed in the “Specifications” section of Chapter 1) must be maintained to ensure the proper operation of this printer. Consider the following points before installing the printer: Install in a well-ventilated, dust-free area. Install on a hard, flat and continuous surface, with all four printer feet level.

  • Page 34: Figure 2-1 Printer Space Requirements, Table 2-1 Printer And Toner Cartridge Environmental Conditions

    Space Requirements 49.2 in (1250mm) 3.54 in 3.94 in (100mm) (90mm) 3.35 in (85mm) Optional Lower Cassette Figure 2-1 Printer Space Requirements Environmental Requirements Keep the printer within the following environmental conditions for optimum performance. Table 2-1 Printer and Toner Cartridge Environmental Conditions Item Operating Storage...

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    Operating Overview Chapter Contents Using the Control Panel ......3-3 Control Panel Layout ......3-3 Indicator Lights .

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    3-2 Operating Overview...

  • Page 37: Figure 3-1 Control Panel Layout

    Using the Control Panel Control Panel Layout The control panel consists of a 16-character display panel, three indicator lights, and eight keys, three of which have alternate functions. Figure 3-1 Ready On Line Form Feed MP Paper Size Enter Menu Item Shift Reset...

  • Page 38: Table 3-1 Indicator Lights

    Indicator Lights The control panel indicator lights are described in the following table. The column labeled “Do this:” includes an action only when an action is required. Table 3-1 Indicator Lights When this Looks like this: It means this: Do this: indicator: Ready Ready to print.

  • Page 39: Table 3-2 Control Panel Keys

    Table 3-2 Control Panel Keys Explanation [On Line] Switches the state of communication between computer and printer either on (on line) or off (off line). For the printer to receive data, both the On Line and Ready indicator lights must be lit. [Form Feed] Prints any data remaining in the page buffer.

  • Page 40: Table 3-3 Settings And Defaults

    Settings and Defaults The printer makes most printing decisions based on either temporary settings or permanent defaults. N O T E Settings you send from software applications override printer defaults. Table 3-3 Settings and Defaults Setting or Default Explanation Temporary setting A value set for the current print job by your software application.

  • Page 41: Table 3-4 Control Panel Menu Map

    Control Panel Menus [Menu] Pressing gives you access to the menus, one after another. Each menu is described in a separate table in this section. When options (such as the PostScript language) are installed in the printer, new menus or menu items automatically are added in the appropriate menus.

  • Page 42: Table 3-5 Printing Menu Items

    Printing Menu You can override or change any Printing Menu setting through most software applications. When you change a setting from the printer control panel, the new setting becomes the printer default value. Table 3-5 Printing Menu Items Item Options Explanation COPIES 1* to 999...

  • Page 43: Table 3-6 Pcl Menu Items

    PCL Menu PCL Menu items allow you to choose the printer default font and symbol set. Printer Control Language (PCL) is HP printer language. You can also change such PCL Menu items as the FONT SOURCE through your software application. Table 3-6 PCL Menu Items Item...

  • Page 44: Table 3-7 Job Menu Items

    Job Menu The items available in the Job Menu can also be changed through software applications if an appropriate printer driver is installed. Table 3-7 Job Menu Items Item Options Explanation RESOLUTION 300 or 600* For most purposes, 600 dpi is recommended. PERSONALTY AUTO* Personality means printer language.

  • Page 45: Table 3-8 Configuration Menu Items

    Configuration Menu Configuration Menu items cannot be changed from software applications. Table 3-8 Configuration Menu Items Item Options Explanation MP TRAY FIRST* Draws paper from the MP Tray regardless of paper size (this setting not recommended for shared environments). CASS The MP Tray operates as a paper cassette.

  • Page 46: Table 3-9 Memory Configuration Items

    Memory Configuration Menu This menu contains the items for personality Resource Saving and I/O Buffering. Depending on how the printer memory is configured, any combination of menu items and possible values can appear. When you change an item in this menu, the printer automatically resets, and all fonts, macros and downloaded data in the printer are lost (except data stored on the optional Disk Accessory).

  • Page 47: Table 3-10 Parallel Menu Items

    Parallel Menu Parallel Menu items can be selected only from the printer control panel. You cannot change or override them from your software application. Table 3-10 Parallel Menu Items Item Options Explanation HIGH SPEED YES* The speed at which data is transmitted to the printer. YES sets the Bi-Tronics parallel interface to run at a higher data rate supported by newer computers.

  • Page 48: Table 3-11 Test Menu Items

    Test Menu Test Menu items can be selected only from the printer control panel. You cannot change or override them from your software application. See “Testing the Printer” later in this chapter for detailed information about running printer tests and interpreting their results. Table 3-11 Test Menu Items Item...

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    Service Mode The Service Mode should be used only by authorized service personnel. While in Service Mode, you can: Print a Service Mode Self Test. Verify and set the Page Count and serial number. These are displayed on the standard self test. Set the Cold Reset Default.

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    3SERVMOD On Line Form Feed Enter Wait 5 seconds Form Feed Enter Menu Menu Item Figure 3-2 Service Mode Menus 3-16 Operating Overview...

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    Setting the Page Count and Serial Number The page count and serial numbers are stored in Non-Volatile Memory. If it is necessary to replace the Formatter PCA, the page count should be set to the current value to reflect the age of the print engine. The procedure for setting the serial number is similar to setting the page count.

  • Page 52: Table 3-12 Other Service Menu Items

    Setting the Cold Reset Default Paper Size When replacing a Formatter PCA with a default paper size setting of A4, set the Customization Variable to A4. To set the Customization Variable: Enter the Service Mode as previously described in this chapter. [Menu] Press to access the Service Menu.

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    Testing the Printer When you run a self test, the printer checks its internal controller and I/O interface, then prints a test page. You can review the self test printout to verify proper installation of such options as paper cassettes or personalities. Printing a Self Test Page [On Line] Press...

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    Understanding the Self Test Printout Figure 3-3 is a sample self test printout (run from Service Mode). Numbers in the sample printout match numbers in the key to the printout below. The appearance of the self test printout varies depending on the options currently installed in the printer.

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    3SELFTST C3295A Figure 3-3 Self Test Printout (printed in Service Mode) Operating Overview 3-21...

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    Engine Test The engine test print can be used to verify that the print engine is functioning correctly. The Formatter PCA is completely bypassed during an engine test. To print an engine test, use a non-metallic object to press the engine test button (see Figure 3-4).

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    Resetting the Printer Simple Reset A simple reset does the following: Clears the page buffer. Removes all temporary typefaces and macros. Makes the current user-selected defaults “active” (making them the default values until you change them again). Purges the input buffer of the active I/O (the other I/O buffer is not affected). To perform a simple reset: [On Line] [On Line]...

  • Page 58: Table 3-13 Menu Of Resets

    To perform a cold reset: Turn off the printer. While holding the [On Line] key down, turn the printer on. 08 COLD RESET appears briefly on the display, then 05 SELF TEST appears. After about 30 seconds, 08 COLD RESET reappears on the display, followed by 00 OFFLINE. The cold reset is complete.

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    Maintenance Chapter Contents Cleaning the Printer ......4-3 Cleaning Spilled Toner ......4-4 This printer requires no regular maintenance except for routine cleaning N O T E procedures, described in this chapter.

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    4-2 Maintenance...

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    Cleaning the Printer To maintain the print quality, thoroughly clean the printer: Every time you change the toner cartridge. After printing approximately 7,500 pages. Whenever print quality problems occur. Clean the outside of the printer with a lightly water-dampened cloth. Clean the inside with only a dry, lint-free cloth.

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    Table 4-1 COMPONENT CLEANING METHOD/NOTES Outside Covers Use a water-dampened cloth. Do not use solvents or ammonia-based cleaners. Inside General Use a dry, lint free cloth. Remove all dust, spilled toner, and paper particles. Paper Pickup Rollers Use a water-dampened lint-free cloth. Registration Roller Use a dry lint-free cloth.

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    Functional Overview Chapter Contents Basic Printer Functions ......5-3 Power Supply System ......5-4 AC Power Distribution .

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    Control Panel ....... . 5-16 Interface PCA ....... . 5-16 Image Formation System .

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    Basic Printer Functions This chapter presents a generalized functional overview of the printer and the printing processes. The following printer systems are discussed: Power Supply System DC Controller System Formatter PCA Control Panel Interface PCA Image Formation System Paper Feed System Basic Sequence of Operation Figure 5-1 is a generalized block diagram of the printer: Figure 5-1...

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    Power Supply System The AC and DC power supply circuits are contained on the Power Supply Unit, and the high voltage power circuitry is contained on the High Voltage Power Supply PCA. The Power Supply and Distribution System is illustrated in Figure 5-2. 5BLKDIA Power Supply Unit Circuit...

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    AC Power Distribution The AC power circuitry supplies AC voltage whenever the power cord is connected to the AC power source and the power switch is turned ON. A toner cartridge must be installed and the front door closed before voltage is supplied to the Power Supply circuits, the DC Controller, the Main Motor, or the Fusing Assembly.

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    High Voltage Power Distribution The High Voltage Power Supply PCA applies an overlap of DC and AC voltage to the primary charging roller and the developing roller. This circuit also applies a positive or negative DC voltage to the transfer charging roller according to the instructions from the CPU on the Formatter PCA.

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    DC Controller System The following systems and functions are controlled by the DC Controller: DC Power Distribution Laser and Scanner Drive Paper Motion Monitoring and Control Clutches, (Registration, Cassette Pickup, and MP Tray Pickup) Engine Test Microswitch Motors (Main Drive, Scanner, and Fans) Figure 5-2 shows the Power Supply and Distribution System.

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    Laser and Scanner Drive Based on information received from the Formatter, the DC Controller sends signals to the Laser/Scanner Assembly to modulate the laser diode ON and OFF and to drive the Laser/Scanner motor. Refer to “Image Formation System,” later in this chapter for more information. Paper Motion Monitoring and Control The DC Controller PCA controls paper motion by continuously monitoring the various paper sensors, and coordinating the timing with the other print...

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    Motors The Main Motor (M1) is controlled by the DC Controller PCA. The Main Motor drives the Main Drive Assembly and rotates during the Initial Rotation period (following initial power-ON), the Print period, or the Last Rotation Period, or whenever the printer front door is opened and closed. The Scanner Motor is controlled and monitored by the DC Controller.

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    Formatter System The Formatter PCA is responsible for the following: Controlling the Power Save mode. Receiving and processing print data from the various printer interfaces. Monitoring front control input and relaying printer status information (through the front control and the Bi-Directional I/O). Developing and coordinating data placement and timing with the print engine.

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    Power Save This user-adjustable feature conserves power by shutting down the fuser and exhaust fans after the printer has been idle for 15 minutes, 30 minutes, 1 hour, 2 hours, or 3 hours. A 10 second interval is also available in Service Mode.

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    EconoMode The EconoMode setting uses approximately 75% less toner than standard mode printing by reducing the dot density. However, Economode does not extend toner cartridge component life. EconoMode, which can also be thought of as “draft mode,” is user selectable via a control panel key and some software applications.

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    Input/Output Parallel Interface The Formatter PCA receives incoming data through its Bi-Tronics interface (IEEE 1284). The Bi-Tronics I/O provides high speed and two-way communication between the printer and the host, allowing the user to change printer settings and monitor printer status from the host computer. The “High Speed (Yes/No)”...

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    Printer Memory N O T E If the printer encounters difficulty managing available memory, a Clearable Warning message will be displayed on the Control Panel. Refer to “Clearable Warnings” in Chapter 7 for details. Read Only Memory (ROM) Besides storing microprocessor control programs, the ROM stores dot patterns of internal character sets (fonts).

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    Memory Enhancement technology (MEt) The Hewlett-Packard Memory Enhancement technology (Met) effectively doubles the standard memory through a variety of font and data compression methods. N O T E MEt is only available in PCL mode; it is not functional when printing in PostScript mode.

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    Control Panel The Formatter PCA sends and receives printer status and command data via a Control Panel PCA. The Control Panel consists of a 16-character display window and an 8-key keypad. Control Panel messages can be configured in any of several languages. Refer to “Using the Control Panel,” in Chapter 3, and to “Printer Message Troubleshooting”...

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    Image Formation System Laser printing requires the interaction of several different technologies (such as electronics, optics, and electrophotographics) to provide a printed page. Each process functions independently and must be coordinated with the other printer processes. Image formation consists of six processes: 1.

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    Toner Cartridge The toner cartridge is the “heart” of the Image Formation System. It houses the cleaning, conditioning, and developing steps of the process. The toner cartridge contains the photosensitive drum, primary charging roller, developing station, toner cavity, and cleaning station. Including these components that wear, degrade, or are consumed in the replaceable toner cartridge eliminates the need for a service call when replacement is required.

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    Drum Cleaning The cleaning blade is in contact with the surface of the drum at all times. As the drum rotates during printing, excess toner is stored in the waste toner receptacle. Figure 5-7 5DRMCLN Cleaning Waste Toner Blade Receptacle Toner Cartridge Photosensitive Drum...

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    Drum Conditioning After the drum is physically cleaned, it must be conditioned. This process consists of applying a uniform negative charge on the surface of the drum with the primary charging roller, located in the toner cartridge. The primary charging roller is coated with conductive rubber with an AC bias applied to erase any residual charges and maintain a constant drum surface potential.

  • Page 83

    Image Writing During the writing process, a modulated laser diode projects the beam onto the rotating six-sided scanning mirror. As the mirror rotates, the beam reflects off the mirror, through a set of focusing lenses, through a slot in the rear of the toner cartridge, and onto the photosensitive drum.

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    Image Developing The developing process develops the latent electrostatic image into a visible image on the drum. The developing unit consists of a metallic cylinder that rotates around a fixed magnetic core inside the toner cavity. Toner is a powdery substance made of black plastic resin bound to iron particles, which is attracted to the magnetic core of the cylinder.

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    Image Transferring During the transferring process, the toner image on the drum surface is transferred to the paper. A positive charge applied to the back of the paper, by the transfer roller causes the negatively charged toner on the drum surface to be attracted to the page.

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    Image Fusing During the fusing process, the toner is fused into the paper by heat and pressure to produce a permanent image. The paper passes between a heated fusing roller and a soft pressure roller. This melts the toner and presses it into the paper.

  • Page 87: Figure 5-13 Paper Path

    Paper Feed System Paper Path The paper feed system picks print media automatically from the paper cassette, optional lower cassette, or accepts it from the MP Tray, and delivers it to the image formation system at precisely the right time. The system then feeds the media to the fusing station, and delivers the finished product to the output bin on top of the printer.

  • Page 88: Table 5-1 Clutches And Sensors

    Clutches and Sensors Figure 5-14 shows the locations of the various solenoids, photosensors and rollers. Figure 5-14 5CLUTCH Clutches and Sensors Table 5-1 Clutches and Sensors Name Description MP Tray paper sensor Senses paper in the MP Tray. PS401 Delivery Unit paper sensor Senses paper in the fuser area.

  • Page 89

    Printing from the Paper Cassette Paper motion begins when the DC Controller PCA, after receiving a PRINT signal, starts the Scanner Motor, the Main Motor, and the fusing heater. The Cassette Pickup Clutch (CL2) is energized for 0.5 seconds, the pickup roller and the registration roller rotate and feed a sheet of paper from the Paper Cassette to the Registration Position, where the registration roller is stopped by the Registration Clutch (CL1), if necessary, until the Scanner...

  • Page 90

    Basic Sequence of Operation The Formatter PCA and the DC Controller PCA share information during printer operation. The Interface PCA forms a link which operates as a serial data bus. This allows printer status, command, and dot-image data to be passed between the two PCAs. Figure 5-15 shows the general timing of the printer events.

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    Figure 5-15 5TMEDIAG General Timing Diagram Functional Overview 5-29...

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    5-30 Functional Overview...

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    Removal and Replacement Chapter Contents Removal and Replacement Strategy ....6-3 Required Tools ....... 6-4 User Installable Accessories .

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    Delivery Area Assemblies ......6-34 Upper and Lower Delivery Roller Assemblies ... . . 6-34 Delivery Gear Assembly .

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    Removal and Replacement Strategy This chapter documents removal and replacement of major assemblies. Replacement is generally the reverse of removal. Occasionally, information is included to provide direction for difficult or critical replacement procedures. Unplug the power cord from the power outlet before attempting to service W A R N I N G ! the printer.

  • Page 96: Figure 6-1 Phillips Vs. Posidriv Screwdrivers

    Required Tools #2 Magnetized Phillips Screwdriver (6-inch shaft) #2 Stubby Magnetized Phillips Screwdriver (1-inch shaft) Small flat-blade Screwdriver Small Pair Needle Nose Pliers All screws used in field-replaceable printer components are Phillips head screws which require a #2 size Phillips screwdriver. Figure 6-1 shows the difference between a Phillips and a Pozidriv screwdriver.

  • Page 97

    User Installable Accessories Memory Upgrade C A U T I O N SIMMs and the Formatter PCA can be damaged by small amounts of electro-static discharge (ESD). Wear an anti-static wrist strap. With the printer OFF and unplugged, loosen the two captive screws and remove the Formatter PCA.

  • Page 98

    Disk Accessory The Disk Accessory is housed under a protective plastic cover on the left rear corner of the Formatter PCA. The plastic cover and the disk should be removed as one piece. With the printer OFF and unplugged, 6diskdrv loosen (2) captive screws and remove the Formatter PCA.

  • Page 99

    Optional Lower Cassette The Optional Lower Cassette requires installation of a Lower Cassette Paper Guide on the bottom of the printer, as well as connection of a cable to the rear of the left foot. Before beginning, unplug the printer from the power source and remove the toner cartridge and paper cassette.

  • Page 100

    Covers and Doors The printer covers are in four separate components: the Upper Cover (includes the Control Panel), the Left and Right Side Covers, and the Rear Cover. Control Panel The Control Panel Assembly includes the Control Panel PCA and its plastic cover as shown in Figure 6-2.

  • Page 101

    Upper Cover The Upper Cover is held in place by two screws, which are accessed from the front of the printer. Open the front door. Remove (2) screws shown in Figure 6-3. Tilt the front of the cover up, slide it to the rear, unsnap cable from retainer, and unplug the control panel connector from the Interface PCA.

  • Page 102: Figure 6-4 Static Charge Eliminator

    Static Charge Eliminator C A U T I O N Remove the Static Charge Eliminator only if replacing. Removing it may damage the accessory. Remove Upper Cover (see Figure 6-3). Remove delivery tray by removing (2) screws (Figure 6-4, callout 1). Remove (2) screws (Figure 6-4, callout 2).

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    Side Covers Remove the Upper Cover (Figure 6-3). N O T E The left cover tab (shown) presses to the rear; the right cover tab presses to the front. Press on the tab to release the top edge of each side cover (Figure 6-5). Tilt the cover outward and lift up.

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    Rear Cover Remove (1) machine screw (Figure 6-6, callout 1) and (1) shoulder screw (Figure 6-6, callout 2). Tilt the cover outward and lift off. Figure 6-6 6REARCVR 6REARCVRWMF Removing Rear Cover To Reinstall: Make sure the locator tabs at the bottom of the covers are properly placed in the alignment holes in the chassis before snapping covers into place.

  • Page 105

    Left Side Assemblies Exhaust Fan (FM1) The Exhaust Fan is located on the left side of the printer, just above the High Voltage Power Supply PCA. Unplug the fan connector from the DC Controller (Figure 6-7, callout 1) and remove the cable from the (2) clips (Figure 6-7, callout 2). Lift the fan out of its mounting, noting the position of the cabling (attaches to lower left outside of the fan body).

  • Page 106

    High Voltage Power Supply PCA The High Voltage Power Supply is located along the left side of the printer. Remove the (2) connectors (Figure 6-8, callout 1). Remove (4) machine screws (Figure 6-8, callout 2). Remove (4) self-tapping screws (Figure 6-8, callout 3). Bend back the plastic cover and remove (1) machine grounding screw located beneath the plastic cover (Figure 6-8, callout 4).

  • Page 107

    Cassette Size Sensor Assembly Remove the High Voltage Power Supply PCA (see Figure 6-8). Disconnect the cable (see Figure 6-9, callout 1). Remove the (1) machine screw (see Figure 6-9, callout 2). C A U T I O N Be careful not to damage the sensor tabs when removing the assembly. Carefully lift the Cassette Size Sensor Assembly up and out of the chassis.

  • Page 108

    Rear and Top Area Assemblies Card Cage The Card Cage is located directly underneath the Upper Cover. It is not necessary to remove the Formatter or MIO from the Card Cage. Disconnect the interface cable (Figure 6-10, callout 1). Release the cable from the (3) cable clips (Figure 6-10, callout 2). Do not remove (2) screws indicated in Figure 6-20 by the null symbol ( ).

  • Page 109

    Rear Exhaust Fan (FM2) The Rear Exhaust Fan is located on the left rear of the printer chassis, and requires prior removal of the Card Cage assembly. Remove the Card Cage assembly (see Figure 6-10). Unplug the fan cable connector and release it from its cable clip (Figure 6-11, callout 1).

  • Page 110

    Power Supply Unit The front door must be opened prior to removing the Power Supply Unit. Remove the Card Cage assembly (see Figure 6-10). Unplug the connector from the Fusing assembly (Figure 6-12, callout 1). Unplug the connector from the DC Controller PCA (Figure 6-12, callout 2). Remove the cables from the (4) cable clips (Figure 6-12, callout 3) and remove the DC Controller and Formatter power cables.

  • Page 111

    DC Controller PCA The DC Controller PCA is located directly beneath the Card Cage assembly. Remove the Card Cage assembly (see Figure 6-10). C A U T I O N (4) connectors are hardwired to the DC Controller and must be unplugged at the other end of the wires.

  • Page 112

    Laser/Scanner Assembly The Laser/Scanner assembly is located under the DC Controller PCA. Remove the following components: Card Cage assembly (Figure 6-10) Rear Exhaust Fan (FM2) (Figure 6-11) Power Supply Unit (Figure 6-12) DC Controller PCA (Figure 6-13) Remove (4) long, machine screws (Figure 6-14). Lift up slightly to disengage from alignment pins and carefully slide the Laser/Scanner assembly out the side of the printer chassis.

  • Page 113

    Right Side Assemblies Main Motor (M1) The Main Motor is located adjacent to the Power Supply Unit. Other than the covers, the Main Motor assembly does not require removal of any other assemblies. Unplug the cable connector from the top of the Main Motor (Figure 6-15, callout 1).

  • Page 114

    Main Drive Assembly The Main Drive assembly is located on the right side of the printer toward the front. Remove (2) machine screws (Figure 6-16, callout 1). Unplug the Fuser connector from the Power Supply Unit (Figure 6-16, callout 2). Lift out plastic cable shield and pull the cable tray out of the way (Figure 6-16, callout 3).

  • Page 115

    Remove (2) screws from the pickup clutch alignment guide (metal) and remove the guide (Figure 6-17, callout 7). Unplug the pickup clutch connector and remove its cable from the clips (Figure 6-17, callout 8). Carefully remove the e-clip, washers and bushing from the shaft (Figure 6-17, callout 9).

  • Page 116

    Drum Drive Assembly The Drum Drive assembly is located directly behind the Main Drive assembly. Remove the toner cartridge. Remove the Main Drive assembly (see Figure 6-16). Remove (3) self-tapping screws (Figure 6-18). Slide the assembly out of the printer. Figure 6-18 6drmgear 6drmgearwmf...

  • Page 117

    Front Door Assemblies All Front Door assemblies can be removed without prior removal of any covers or other components. Transfer Roller Assembly C A U T I O N Handle the Transfer Roller from the ends only. Do not touch the surface of the Transfer Roller.

  • Page 118

    Fusing Assembly The Fusing assembly is located on the upper portion of the printer door. C A U T I O N Do not remove (2) screws indicated in (Figure 6-20) by the null symbol ( ). Remove the Transfer Roller (see Figure 6-19). Remove (5) machine shoulder screws (Figure 6-20, callout 1).

  • Page 119

    Fuser Inlet Guide W A R N I N G The Fuser Inlet Guide contains the anti-static teeth. They are VERY sharp. The Fuser Inlet Guide is located inside the Front Door assembly just forward of the Transfer Roller. N O T E Do not remove (2) screws indicated in (Figure 6-21) by the null symbol ( ).

  • Page 120

    Paper Guide Plate Assembly The Paper Guide Plate assembly contains the MP Tray pickup roller, motor, and gear assemblies, and requires prior removal of the Transfer Roller and Fusing assembly. Remove the Transfer Roller (see Figure 6-19). Remove the Fusing assembly, (see Figure 6-20). Carefully remove the small spring attached to the sensor assembly shown in Figure 6-22, callout 1.

  • Page 121

    MP Guide Plate The MP Guide plate is located adjacent to the MP Pickup Roller assembly and requires prior removal of the Paper Guide Plate assembly. C A U T I O N The springs on each end of the plate are under tension. Be careful when releasing.

  • Page 122

    MP Drive Gears The MP Tray Drive Gears are housed within the Front Door assembly directly under the Paper Guide Plate assembly. N O T E The Drive Gear that is circled in Figure 6-24 requires prior removal of the Fuser Door (see Figure 6-25, callout 2).

  • Page 123

    Fuser Door The Fuser Door is accessed with the printer front door closed and the MP Tray open. Open the Fuser Door part way and press downward on the left end to release (2) plastic retainer clips from the pins (see Figure 6-25, callout 1). Rotate upward to nearly closed, then slide the door assembly outward and to the left to clear the gear on the right end (Figure 6-25, callout 2).

  • Page 124

    MP Tray To remove the MP Tray the printer front door must be closed and the MP Tray open. Grasp right and left edges of the MP Tray and squeeze inward to release retainer arms. N O T E The plastic retainer arms are designed to pop out when snapped downward. This requires a quick, firm snapping action to free the MP Tray.

  • Page 125

    Front Door Assembly The Front Door assembly is removed as a single assembly and requires prior removal of the printer covers and the MP Tray. Remove the MP Tray (see Figure 6-26). Remove (1) screw (Figure 6-27, callout 1) and remove Fuser Cable tray cover. Unplug the Fuser Cable (on the right side of the printer) and remove (2) screws to release the cable tray from the printer chassis (see Figure 6-16, callout 1).

  • Page 126

    Delivery Area Assemblies Upper and Lower Delivery Roller Assemblies The Delivery Roller assemblies are located on top of the printer chassis and require removal of the Upper Cover to access. Remove the e-clip on the left end of the upper roller shaft (Figure 6-28, callout 1).

  • Page 127

    Delivery Gear Assembly The Delivery Gear assembly is located adjacent to the Upper Delivery Rollers on the top right end of the printer, and requires previous removal of the Upper Delivery Roller. Remove the Upper Delivery Roller (Figure 6-28). Remove (2) self-tapping screws securing the Upper Cover support bracket (Figure 6-29, callout 1).

  • Page 128

    Cartridge Guide The Cartridge Guide is located directly under the toner cartridge and behind the Registration Rollers. Note that the removal of this guide does not require prior removal of the Upper Cover or any upper area assemblies. Using a stubby Phillips screwdriver, remove the two self-tapping screws (Figure 6-30).

  • Page 129

    Cassette Pickup Roller Assembly The Cassette Pickup Roller assembly is located under the Cartridge Guide. The removal of this assembly requires prior removal of the top and right side covers and will require a stubby Phillips screwdriver. Remove Paper Cassette and Cartridge Guide (Figure 6-30). From the right side of the printer, remove the pickup clutch alignment guide (Figure 6-17, callouts 7 &...

  • Page 130

    Separation Pad The separation pad is located adjacent to the Registration Roller, and can be removed without prior removal of any other parts. C A U T I O N Removing the Separation Pad using a screwdriver is likely to damage it. Do not attempt to remove the Separation Pad unless you have a new replacement pad available.

  • Page 131

    Registration Roller The Registration Roller requires a stubby magnetic screwdriver and prior removal of the covers and toner cartridge guide. Removal of the left end of the Registration Roller is described below. The right end is similar except there is no plastic retainer tab or metal grounding tab. Lift the end of the plastic retainer tab upward and slide to the left to remove (Figure 6-33, callout 1).

  • Page 132

    To Reinstall (Registration Roller): N O T E Refer to Figure 6-34 while reinstalling. NOTE the placement of the thin metal grounding tab (see Figure 6-34, side view) on the left retainer arm. It must slide underneath the bushing on the rear Transfer Roller as you carefully ease the left retaining arm and left Registration Roller bushing back into place.

  • Page 133

    Registration Roller Guide Plate The Registration Roller Guide Plate is a metal assembly located directly under the Registration Roller and requires prior removal of the Registration Roller. Remove the Registration Roller (see Figure 6-33). Remove (2) self-tapping screws (Figure 6-35). Lift the Registration Roller Guide Plate up and out of the printer.

  • Page 134

    Anti-Static Brush The Anti-Static Brush is located directly under the Registration Roller Guide Plate. Remove the Registration Roller and Guide Plate (see Figure 6-35). Remove (1) machine grounding screw with star washer (Figure 6-36, callout 1). Lift the sheet metal grounding plate out (Figure 6-36, callout 2). Lift the Anti-Static Brush up and out of the printer (Figure 6-36, callout 3).

  • Page 135

    Paper Guide The Paper Guide is a plastic plate located directly under the Registration Roller assembly. Remove the Registration Roller and Guide Plate (see Figures 6-33 and 6-35). Remove (3) self-tapping screws (Figure 6-37). Carefully lift the Paper Guide up and out of the printer. Figure 6-37 6defgde 6defgdewmf...

  • Page 136

    Bottom Assemblies Foot Assemblies The Left Side Foot removal procedure is described below. The Right Side Foot removal is similar. If the left side cover is in place, do not rest the printer on its left side, as this C A U T I O N will damage the ventilation grill.

  • Page 137

    Troubleshooting Chapter Contents Preliminary Troubleshooting ......7-3 Paper Path and Components ......7-4 Printer Message Troubleshooting .

  • Page 138

    7-2 Troubleshooting...

  • Page 139

    Preliminary Troubleshooting Step Description Corrective Action Disconnect printer from network (if applicable). Ensure that toner cartridge is installed, front door is closed, and AC power is applied. Verify power distribution by Troubleshoot power supply listening to fans, Main Motor, and distribution system.

  • Page 140: Figure 7-1 Paper Path And Components

    Paper Path and Components 7PAPPATH Optional Lower Cassette Lower Cassette Exit Sensor Paper Out Sensor Lower Cassette Pickup Rollers Figure 7-1 Paper Path and Components 7-4 Troubleshooting...

  • Page 141

    Printer Message Troubleshooting The control panel alphanumeric display provides the following information: Status Messages (refer to Table 7-1) Service and Error Messages (refer to Table 7-2) Clearable Warnings (refer to Table 7-3) N O T E Before troubleshooting the printer, cycle the power to the printer to see if the error persists.

  • Page 142: Table 7-1 Status Messages

    Printer Status Messages The following table lists printer messages and their meanings and describes recommended actions. Messages that begin with a number are listed first, followed by messages that begin with a letter. Table 7-1 Status Messages Message Description Recommended Action Numeric Listings [Blank Display] Nothing displayed at power-up.

  • Page 143: Table 7-1 Status Messages — Continued

    Table 7-1 Status Messages — continued Message Description Recommended Action 06 DEMO PAGE Printing a Demonstration Page. (Note that No action required. PCL/PostScript formats are different.) 06 CONFIG PAGE Printing a Configuration Page. No action required. [Shift] [Reset] 07 RESET Follows a control panel No action required unless the printer is receiving [Shift]...

  • Page 144

    Table 7-1 Status Messages — continued Message Description Recommended Action 12 PRINTER OPEN The front door is not firmly closed, or the Make sure the toner cartridge is fully toner cartridge is not installed correctly. seated and the front door is firmly closed.

  • Page 145

    Table 7-1 Status Messages — continued Message Description Recommended Action 14 NO TONER CART The toner cartridge is missing or not installed Insert a toner cartridge or make sure the cartridge correctly. is fully seated and the front door is fully closed, [On Line] then press to resume.

  • Page 146

    Table 7-1 Status Messages — continued Message Description Recommended Action Alphabetical Listings FS DISK FAILURE Printer detected a disk failure. Printer operation may continue, provided access to the disk is not required. (The printer will substitute fonts if necessary.) [Shift] + [Continue], to continue printing Press when this error occurs.

  • Page 147: Table 7-2 Service And Error Messages

    Service and Error Messages Table 7-2 Service and Error Messages Message Description Recommended Action [Shift] [Continue] 20 MEM OVERFLOW The printer received more data from the Press to print the transferred computer than can fit in its available user data (data loss may result), then: make more memory.

  • Page 148: Table 7-2 Service And Error Messages — Continued

    Table 7-2 Service and Error Messages — continued Message Description Recommended Action 50 SERVICE Fuser malfunction, resulting from either an Switch the printer OFF for at least 20 minutes and overheating or underheating condition. then back ON. If the error continues: 1.

  • Page 149

    Table 7-2 Service and Error Messages — continued Message Description Recommended Action 55 ERROR Communication error between DC Controller Switch the printer OFF and then back ON. If the and Formatter PCA. error continues: 1. Check cable from DC Controller to Laser/Scanner Assembly.

  • Page 150

    Table 7-2 Service and Error Messages — continued Message Description Recommended Action 70 or 71 ERROR A language (personality) SIMM problem was Remove or replace the language (personality) identified. SIMM not compatible with SIMM. firmware. 79 SERVICE [xxxx] A Formatter firmware error occurred. The Write the error message and the four digit code numbers [xxxx] following the error indicate down before continuing.

  • Page 151

    Clearable Warnings A clearable warning message indicates that the printer changed settings in order to complete the print job. A clearable warning usually occurs when a transient condition, such as an invalid or uninstalled personality, or lack of memory causes a temporary change. A number of clearable warnings can appear while printing a job.

  • Page 152

    Image Formation Troubleshooting Check the Toner Cartridge Image formation defects are many times the result of toner cartridge problems. If there is any doubt, always replace the toner cartridge before troubleshooting image defects. Use the following check list to ensure that the toner cartridge is still operable.

  • Page 153

    BLANK PAGE BLACK PAGE (see Table 7-4, page 7-21) (see Table 7-5, page 7-22) FADED PRINT WHITE STRIPES (parallel to path) (see Table 7-6, page 7-23) (see Table 7-7, page 7-24) Troubleshooting 7-17...

  • Page 154

    BLACK LINES (perpendicular to path) BLACK LINES (parallel to path) (see Table 7-8, page 7-24) (see Table 7-9, page 7-25) REPETITIVE DEFECTS BUBBLE PRINT (see Table 7-10, page 7-25) (see Table 7-11, page 7-26) 7-18 Troubleshooting...

  • Page 155

    DROPOUT CHARACTER VOIDS (see Table 7-12, page 7-26) (see Table 7-13, page 7-27) BACKGROUND SCATTER PARTIAL BLANK PAGE (or Leading Edge Halo) (see Table 7-14, page 7-28) (see Table 7-15, page 7-28) Troubleshooting 7-19...

  • Page 156

    FAULTY REGISTRATION SMEARED PRINT (see Table 7-16, page 7-29) (see Table 7-17, page 7-30) COMPRESSED PRINT IMAGE SKEW (see Table 7-18, page 7-30) (see Table 7-19, page 7-30) 7-20 Troubleshooting...

  • Page 157: Table 7-4 Blank (white) Page

    Table 7-4 Blank (White) Page Possible Cause Recommended Action OCCASIONAL BLANK PAGES: 1. Software Configuration. Make sure the application software is not sending incorrect page length requests, or extra page eject commands. 2. Network Configuration. Some sharing devices Check with the Network Administrator. on networks may generate a blank page as a separator.

  • Page 158: Table 7-5 Black Page

    Table 7-5 Black Page Possible Cause Recommended Action 1. Defective toner cartridge. Replace the toner cartridge. 2. Light is leaking into the printer. Ensure all covers are in place. 3. High voltage contact springs are dirty or Inspect and clean the high voltage contacts. If defective.

  • Page 159: Table 7-6 Faded Print

    Table 7-6 Faded Print Possible Cause Recommended Action 1. Toner supply is low. Shake the cartridge gently to redistribute the toner, or replace the cartridge. 2. Print Density is set incorrectly. Change to a darker setting and retry printing. 3. EconoMode is on. EconoMode saves toner by Turn EconoMode off.

  • Page 160: Table 7-7 White Stripes (parallel To Path), Table 7-8 Black Lines (perpendicular To Path)

    Table 7-7 White Stripes (parallel to path) Possible Cause Recommended Action 1. Toner cartridge is nearly empty. This can Remove the toner cartridge and shake it gently. cause uneven toner distribution. The cartridge will soon require replacement. 2. Toner cartridge has been exposed to too much Store the toner cartridge in a darkened light.

  • Page 161: Table 7-9 Black Lines (parallel To Path), Table 7-10 Repetitive Defects

    Table 7-9 Black Lines (parallel to path) Possible Cause Recommended Action 1. Toner cartridge not seated properly. Remove the cartridge and reinsert it. 2. Toner cartridge defective. Replace the cartridge. 3. Repetitive defect. If the lines are repeated at a Refer to Table 7-10 (next), as well as the “Repetitive consistent interval down the page, this is a Image Defect Ruler,”...

  • Page 162: Table 7-11 Bubble Print, Table 7-12 Dropout

    Table 7-11 Bubble Print Possible Cause Recommended Action 1. The density adjustment slider switch on the 1. Check the position of the Print Density Dial in High Voltage Power Supply PCA slider switch is the slider switch. If out of position, remove and not aligned properly with the Print Density Dial.

  • Page 163: Table 7-13 Character Voids

    HP specifications (see HP LaserJet Printer Family Paper Specifications Guide ). 4. Bad transparencies. Transparencies can have Use Hewlett-Packard approved transparencies this problem because they are not designed for (see HP LaserJet Printer Family Paper proper toner adhesion.

  • Page 164: Table 7-14 Background Scatter (or Leading Edge Halo), Table 7-15 Partial Blank Page

    Table 7-14 Background Scatter (or Leading Edge Halo) Possible Cause Recommended Action Random Background Scatter Try a different media (see HP LaserJet Printer 1. Bad Media. The moisture content, conductivity Family Paper Specifications Guide ). or surface finish may not work correctly with the electrophotographic process.

  • Page 165: Table 7-16 Faulty Registration

    Table 7-16 Faulty Registration Possible Cause Recommended Action 1. Overloaded paper cassette. If the cassette is Reload proper amount of paper squarely in the overloaded, the Pickup Rollers may not pick correctly. cassette. Review paper loading with the customer. 2. Paper guide on the paper cassette adjusted Verify that the paper guide is adjusted for the too tight.

  • Page 166: Table 7-17 Smeared Print, Table 7-18 Compressed Print, Table 7-19 Image Skew

    Table 7-17 Smeared Print Possible Cause Recommended Action 1. Bad media. The moisture content, conductivity, or Try a different paper lot or other media (see HP LaserJet Printer Family Paper Specifications surface finish of the media being printed may not work correctly with the electrophotographic process.

  • Page 167

    Troubleshooting Checks Engine Test The engine test print is used to verify that the print engine is functioning correctly. The Formatter PCA is completely bypassed during an engine test. This test is very useful for isolating printer problems. The engine test prints a full page of horizontal lines down the entire printable area, and is also useful for checking and adjusting registration.

  • Page 168

    Half Self Test Functional Check The electrophotographic process can be subdivided into the following stages: Cleaning (removing excess toner from drum surface) Conditioning (placing a uniform electrical charge on drum) Writing (laser strikes surface of drum to create latent image) Development (formation of the toner image on drum) Transfer (charge to transfer the image to paper) Fusing (heat and pressure to produce a permanent image)

  • Page 169

    Drum Rotation Functional Check The photosensitive drum, located in the toner cartridge, must rotate for the print process to work. The photosensitive drum receives its drive from the Main Drive assembly. To verify whether the drum is rotating: Open the Front Door. Remove the toner cartridge.

  • Page 170: Table 7-20 High Voltage System Checks

    High-Voltage Power Supply Check The High-Voltage Power Supply PCA provides the necessary voltages for the electrophotographic processes. A method for verifying the high-voltage system is given in the table below. Table 7-20 High Voltage System Checks CHECKS ACTION 1. Toner cartridge connection Visually inspect the three connection points points.

  • Page 171: Table 7-21 Causes Of Paper Curl

    Paper Curl Paper curl is inherent to the laser printing processes, and occurs when paper is subjected to heat. Paper curl tends to relax as the paper cools while resting on a flat surface. The specification for maximum paper curl when the paper is lying flat before print is 5 mm (0.2 inches).

  • Page 172

    Troubleshooting Tools Repetitive Image Defect Ruler Figure 7-3 7DFTRUL First occurence of print defect Primary Charging Roller 43 mm (1.7 in) Face Down Delivery (Upper) Roller 50 mm (1.96 in) Registration Roller 50 mm (1.96 in) Transfer Roller 61 mm (2.4 in) Developing Cylinder 63 mm (2.48 in) Fusing Pressure Roller 86 mm (3.38 in) Upper Fusing Roller 88 mm (3.46 in)

  • Page 173

    Wiring Diagrams This section contains the following diagrams: Figure 7-4. DC Controller Inputs (1 sheet) Figure 7-5. DC Controller Outputs (1 of 2) Figure 7-6. DC Controller Outputs (2 of 2) Figure 7-7. Main Wiring Diagram (1 sheet, fold-out) Troubleshooting 7-37...

  • Page 174: Figure 7-4 Dc Controller Inputs

    7DCIN Figure 7-4 DC Controller Inputs 7-38 Troubleshooting...

  • Page 175: Figure 7-5 Dc Controller Outputs (1 Of 2)

    7DCOUT1 Figure 7-5 DC Controller Outputs (1 of 2) Troubleshooting 7-39...

  • Page 176: Figure 7-6 Dc Controller Outputs (2 Of 2)

    7DCOUT2 Figure 7-6 DC Controller Outputs (2 of 2) 7-40 Troubleshooting...

  • Page 177: Figure 7-7 Main Wiring Diagram

    7WIRING Figure 7-7 Main Wiring Diagram Troubleshooting 7-41...

  • Page 178

    7-42 Troubleshooting...

  • Page 179

    Parts and Diagrams Chapter Contents How to Use the Part Lists and Diagrams ....8-3 Ordering Parts ......8-3 Ordering Consumables .

  • Page 180

    8-2 Parts and Diagrams...

  • Page 181

    Ordering Parts All standard part numbers listed are stocked and may be ordered from HP’s Support Materials Organization (SMO), or Support Materials Europe (SME). Hewlett-Packard Co. Support Materials Organization 8050 Foothills Blvd. Roseville, CA 95678 Parts Direct Ordering: 1-800-227-8164 (U.S. Only) Hewlett-Packard Co.

  • Page 182

    Ordering Consumables Consumables and accessories such as those listed on Table 8-1 may be ordered from Hewlett-Packard. The phone numbers are: U.S.: 1-800-538-8787 Canada: 1-800-387-3154 (Toronto) 516-671-8383 United Kingdom: 0734-441212 Germany: 0130-3322 Contact your local HP Parts Coordinator for other local phone numbers.

  • Page 183: Table 8-1 Accessories And Supplies

    Accessories and Supplies The following items are available through your local authorized HP dealer. To find a dealer near you (or if your dealer is temporarily out of stock), call the HP Customer Information Center (800) 752-0900. Refer to “Related Documentation” in Chapter 1 for documentation and N O T E training media product numbers.

  • Page 184: Table 8-1 Accessories And Supplies - Continued

    Table 8-1 Accessories and Supplies - continued Modular I/O and Network Cards J2550A HP JetDirect Multi-protocol Network Card with Ethernet/IEEE802.3 10Base-T J2552A HP JetDirect Multi-protocol Network Card with LocalTalk DIN-8 and Ethernet/IEEE802.3 10Base-T BNC. (Standard in 4MV.) J2553A HP JetDirect Multi-protocol Network Card with Token Ring (DB9 and RJ45).

  • Page 185: Table 8-a Common Fasteners Used In The Printer

    Common Hardware and Replaceable Cables Table 8-A Common Fasteners Used in the Printer Example Description Part Number CH101 Screw, Trus Head, w/Washer FA9-1449-000 8SCREW_C CH102 Screw, Stepped, M3 RA1-7636-000 8SCREW_B CH103 Screw, Stepped, M3X4 RB1-5489-000 CH104 Screw, Stepped, M3 RB1-5552-000 CH105 Screw, w/Washer, M3X8 XA9-0253-000 8SCREW_L...

  • Page 186: Table 8-a Common Fasteners Used In The Printer - Continued, Table 8-b Replaceable Cables

    Table 8-A Common Fasteners Used in the Printer - continued Example Description Part Number CH114 Screw, Machine M3X8 XB6-7300-809 CH115 Screw, TP, M3X16 XB6-7301-609 CH116 Retaining Ring (e-type) XD2-1100-242 8SCREW_K CH117 Retaining Ring (e-type) XD2-1100-322 CH118 Retaining Ring (e-type) XD2-1100-402 CH119 Retaining Ring (e-type) XD2-1100-502 CH120 Retaining Ring (e-type)

  • Page 187

    Figure 8-1 8ASYLOC1 Major Assembly Locations Parts and Diagrams 8-9...

  • Page 188

    Figure 8-2 8EXTCOV1 Covers and Doors 8-10 Parts and Diagrams...

  • Page 189: Table 8-2 Covers And Doors

    Table 8-2 Covers and Doors Part No. Description RA2-0448-000 Pivot RB1-1291-000 Shaft, 2 RB1-1421-000 Cover RB1-5562-000 Panel, Rear RB1-5563-000 Panel, Left RF5-1141-000 Guide, Plate, Protection RF5-1166-000 Panel, Right RG5-1562-000 Multi-purpose Tray Assembly 100/115V RG5-1563-000 Multi-purpose Tray Assembly 220/240V RG5-1539-000 Display Panel Assembly 100/115V RG5-1540-000 Display Panel Assembly 220/240V RG5-1485-000...

  • Page 190

    Figure 8-3 8EXTCOV2 Foot Assemblies 8-12 Parts and Diagrams...

  • Page 191: Table 8-3 Foot Assemblies

    Table 8-3 Foot Assemblies Part No. Description RB1-5575-000 Cover, Rear Cassette RF5-1176-000 Plate, Cover RG5-1550-000 Right Foot Assembly RG5-1551-000 Left Foot Assembly CH110 XB1-2400-809 Screw, Machine M4X8 RG5-1446-000 Option Cable Assembly Parts and Diagrams 8-13...

  • Page 192

    Figure 8-4 8FNTCOV1 Front Door Components (Page 1 of 2) 8-14 Parts and Diagrams...

  • Page 193: Table 8-4 Front Door Components (1 Of 2)

    Table 8-4 Front Door Components (1 of 2) Part No. Description RA1-7563-000 Mount RA2-0418-000 Mount, Rod RB1-1399-000 Plate, Continuity, 1 RB1-1400-000 Plate, Continuity, 2 RB1-1438-000 Lever, Sensor, A RA2-0420-000 Lever, Door Sensing, B RB1-1422-000 Shaft, Gear, A RB1-1423-000 Shaft, Gear, B RB1-1424-000 Shaft, Gear, C RB1-1429-000...

  • Page 194

    Figure 8-5 8FNTCOV2 Front Door Components (Page 2 of 2) 8-16 Parts and Diagrams...

  • Page 195: Table 8-5 Front Door Components (2 Of 2)

    Table 8-5 Front Door Components (2 of 2) Part No. Description RG5-1404-000 Paper Guide Plate Assembly RG5-1552-000 Front Door Assembly RB1-1411-000 Roller, Pickup CH103 RB1-5489-000 Screw, Stepped, M3X4 CH105 XA9-0253-000 Screw, W/Washer, M3X8 CH111 XB4-7400-809 Screw, Tap Binding Head M4X8 CH121 XG9-0260-000 Retaining Ring (e-type)

  • Page 196

    Figure 8-6 8INTCOV Output Components 8-18 Parts and Diagrams...

  • Page 197: Table 8-6 Output Components

    Table 8-6 Output Components Part No. Description RB1-1352-040 Shutter, Laser RB1-5457-000 Cover, Louver RB1-5459-000 Pad, Shutter RB1-5460-000 Cover, Center RG5-1545-000 Guide, Delivery Unit RG5-0198-000 Face Down Delivery Assembly RG5-0200-000 FD Roller Assembly RS5-1004-000 Bushing RG5-1396-000 Gear Mounting Assembly CH108 XB1-2300-607 Screw, BH3X6(S) CH112 XB4-7401-007...

  • Page 198

    Figure 8-7 8INTCOM1 Internal Components (Page 1 of 4) 8-20 Parts and Diagrams...

  • Page 199: Table 8-7 Internal Components (1 Of 4)

    Table 8-7 Internal Components (1 of 4) Part No. Description RA2-0298-000 Rack RA2-0321-000 Bushing RB1-1274-000 Eliminator, Static Charge RB1-1317-000 Plate, Pressure, Right RB1-1318-000 Plate, Pressure, Left RB1-1324-000 Lever RB1-1343-000 Knob, Print Density RB1-1344-000 Bracket, Anti-static Brush RB1-1349-000 Hook, Right RB1-1350-000 Hook, Left RB1-5454-000 Spring, Leaf...

  • Page 200

    Figure 8-8 8INTCOM2 Internal Components (Page 2 of 4) 8-22 Parts and Diagrams...

  • Page 201: Table 8-8 Internal Components (2 Of 4)

    Table 8-8 Internal Components (2 of 4) Part No. Description RA2-0308-000 Roller, Guide RA2-0311-000 Bushing, Sensor RA2-0312-000 Claw RB1-1292-000 Plate, Stop, Clutch, R RB1-1294-000 Rod, Left RB1-1367-000 Retainer RB1-1385-000 RB1-2748-000 Stopper, Registration RB1-5442-000 Plate, Stop, Clutch RB1-5445-000 Plate, Mounting, Right RB1-5490-000 Plate, Mounting, Left RF5-0331-000...

  • Page 202

    Figure 8-9 8INTCOM3 Internal Components (Page 3 of 4) 8-24 Parts and Diagrams...

  • Page 203: Table 8-9 Internal Components (3 Of 4)

    Table 8-9 Internal Components (3 of 4) Part No. Description FG2-4647-000 Sub Transfer Assembly RB1-1278-000 Lever, Paper Sensing RB1-1286-000 Cover, E RB1-1325-000 Plate RF5-0326-000 Plate, Contact Transfer RF5-0397-000 Lever, Sensor, Front, Reg RG5-1383-000 Laser/Scanner Assembly RG5-1442-000 Cable, Beam Detect RH3-2150-000 Power Supply Assembly 100/115V RH3-2151-000 Power Supply Assembly 220/240V...

  • Page 204

    Figure 8-10 8INTCOM4 Internal Components (Page 4 of 4) 8-26 Parts and Diagrams...

  • Page 205: Table 8-10 Internal Components (4 Of 4)

    Table 8-10 Internal Components (4 of 4) Part No. Description RB1-1273-000 Guide, Cassette RB1-1346-000 Plate, HVT RB1-1380-020 Bracket, Cable RB1-5446-000 Plate, Rear Shield RG5-1416-000 Cass Size Sensor Assembly RH7-1214-000 Fan (FM2) WT2-0317-000 Clip, Cable WT2-5011-000 Clip, Cable WT2-5018-000 Clip, Cable WT2-5114-000 Bushing RG5-1560-000...

  • Page 206

    Figure 8-11 8CRDCAGE Card Cage Assembly 8-28 Parts and Diagrams...

  • Page 207: Table 8-11 Card Cage Assembly

    Table 8-11 Card Cage Assembly Part No. Description RB1-5557-000 Rail, Slide, Right RB1-5558-000 Rail, Slide, Left RH7-1218-000 Fan (FM3) RG5-1484-000 Small Interface PCA CH106 XA9-0267-000 Screw, TP, M3X6 CH122 XB1-2301-407 Screw, Mach, Trus Head M3X14 Parts and Diagrams 8-29...

  • Page 208: Table 8-12 Optional Lower Cassette Assembly

    Table 8-12 Optional Lower Cassette Assembly Part No. Description C3760-60001 Lower Cassette Assembly C3760-69001 Exchange Lower Cassette Assembly C3760-60503 Lower Cassette Paper Guide C3760-60502 Lower Cassette Paper Tray C3760-60501 Lower Cassette Pickup Roller 8-30 Parts and Diagrams...

  • Page 209

    Parts Index Parts Index A-1...

  • Page 210

    Alphabetical Parts Index Table A-1 Alphabetical Parts List Description Part No. AC Terminal PCA Assembly RG5-1417-000 Bracket, Anti-static Brush RB1-1344-000 Bracket, Cable RB1-1380-020 8-10 Bushing RA2-0321-000 Bushing RS5-1004-000 Bushing RS5-1058-000 Bushing RS5-1147-000 Bushing WT2-5114-000 8-10 Bushing, Sensor RA2-0311-000 Cable, Beam Detect RG5-1442-000 Card Cage Assembly RG5-1560-000...

  • Page 211

    Table A-1 Alphabetical Parts List - continued Description Part No. Cover, Rear Cassette RB1-5575-000 DC Cable Assembly RG5-0239-000 DC Controller PCA Assembly RG5-1559-000 8-10 Delivery Drive Assembly RG5-0505-000 Display Panel Assembly 100/115V RG5-1539-000 Display Panel Assembly 220/240V RG5-1540-000 Display Panel Cable Assembly RG5-1485-000 Drum Drive Assembly RG5-1399-000...

  • Page 212

    Table A-1 Alphabetical Parts List - continued Description Part No. Gear, 34T RS5-0186-000 Guide RF5-0396-000 Guide, Cartridge RF5-1142-000 Guide, Cassette RB1-1273-000 8-10 Guide, Connector RB1-1429-000 Guide, Delivery Unit RG5-1545-000 Guide, Entrance RF5-1150-000 Guide, Paper RF5-0395-000 Guide, Plate, Protection RF5-1141-000 Holder, Cable WT2-9501-000 8-10 Hook, Left...

  • Page 213

    Table A-1 Alphabetical Parts List - continued Description Part No. Motor, DC 17.5W RH7-1199-000 Mount RA1-7563-000 Mount, Rod RA2-0418-000 Multi-purpose Tray Assembly 100/115V RG5-1562-000 Multi-purpose Tray Assembly 220/240V RG5-1563-000 Option Cable Assembly RG5-1446-000 Pad, Separation RF5-0302-000 Pad, Shutter RB1-5459-000 Panel, Left RB1-5563-000 Panel, Rear RB1-5562-000...

  • Page 214

    Table A-1 Alphabetical Parts List - continued Description Part No. Power Supply Assembly 220/240V RH3-2151-000 Rack RA2-0298-000 Rail, Slide, Left RB1-5558-000 8-11 Rail, Slide, Right RB1-5557-000 8-11 Registration Roller Assembly, Metal RG5-0194-000 Registration Roller Assembly, Rubber RG5-0195-000 Retainer RB1-1367-000 Retaining Ring (e-type) XD2-1100-242 Retaining Ring (e-type) XD2-1100-322...

  • Page 215

    Table A-1 Alphabetical Parts List - continued Description Part No. Screw, Machine M3X8 XB6-7300-809 Screw, Machine M4X8 XB1-2400-809 Screw, Machine M4X8 XB1-2400-809 Screw, Machine M4X8 XB1-2400-809 8-10 Screw, Pan Head Self-tap XB4-7401-007 Screw, Stepped M3 RA1-7636-000 Screw, Stepped, M3 RA1-7636-000 Screw, Stepped, M3 RB1-5552-000 Screw, Stepped, M3X4...

  • Page 216

    Table A-1 Alphabetical Parts List - continued Description Part No. Shutter, Laser RB1-1352-040 Slider RF5-1173-000 Small Interface PCA RG5-1484-000 8-11 Spring, Compression RS5-2123-000 Spring, Leaf RB1-5454-000 Spring, Tension RS1-2342-000 Spring, Tension RS5-2117-000 Spring, Tension RS5-2118-000 Spring, Tension RS5-2122-000 Spring, Tension RS5-2125-000 Spring, Tension RS5-2126-000...

  • Page 217

    Numerical Parts Index Table A-2 Numerical Parts List Part No. Description C3141-69001 Exchange Fusing Assembly 220/240V C3141-69002 Exchange Fusing Assembly 100/115V C3141-69003 Exchange DC Controller PCA Assembly 8-10 C3143-67901 Formatter PCA 8-10 C3143-69001 Exchange Formatter PCA 8-10 C3760-60001 Lower Cassette Assembly 8-12 C3760-60501 Lower Cassette Pickup Roller...

  • Page 218

    Table A-2 Numerical Parts List - continued Part No. Description RB1-1292-000 Plate, Stop, Clutch, R RB1-1294-000 Rod, Left RB1-1317-000 Plate, Pressure, Right RB1-1318-000 Plate, Pressure, Left RB1-1324-000 Lever RB1-1325-000 Plate RB1-1336-000 Cover, Cable RB1-1343-000 Knob, Print Density RB1-1344-000 Bracket, Anti-static Brush RB1-1346-000 Plate, HVT 8-10...

  • Page 219

    Table A-2 Numerical Parts List - continued Part No. Description RB1-5454-000 Spring, Leaf RB1-5457-000 Cover, Louver RB1-5459-000 Pad, Shutter RB1-5460-000 Cover, Center RB1-5467-000 Eliminator, Static Charge RB1-5489-000 Screw, Stepped, M3X4 RB1-5490-000 Plate, Mounting, Left RB1-5552-000 Screw, Stepped, M3 RB1-5557-000 Rail, Slide, Right 8-11 RB1-5558-000 Rail, Slide, Left...

  • Page 220

    Table A-2 Numerical Parts List - continued Part No. Description RG5-0194-000 Registration Roller Assembly, Metal RG5-0195-000 Registration Roller Assembly, Rubber RG5-0198-000 Face Down Delivery Assembly RG5-0200-000 FD Roller Assembly RG5-0209-000 Paper Guide Plate Assembly RG5-0231-000 Front Cover Connect PCA Assembly RG5-0239-000 DC Cable Assembly RG5-0505-000...

  • Page 221

    Table A-2 Numerical Parts List - continued Part No. Description RG5-1557-000 Fusing Assembly 100/115V RG5-1558-000 Fusing Assembly 220/240V RG5-1559-000 DC Controller PCA Assembly 8-10 RG5-1560-000 Card Cage Assembly 8-10 RG5-1562-000 Multi-purpose Tray Assembly 100/115V RG5-1563-000 Multi-purpose Tray Assembly 220/240V RH3-2150-000 Power Supply Assembly 100/115V RH3-2151-000 Power Supply Assembly 220/240V...

  • Page 222

    Table A-2 Numerical Parts List - continued Part No. Description WD1-0224-000 Fuse, 125V, 6.3A F101 WD1-0643-151 Fuse, 250V, 3.15A F101 WT2-0317-000 Clip, Cable 8-10 WT2-0388-000 Clip, Cable WT2-5011-000 Clip, Cable 8-10 WT2-5018-000 Clip, Cable WT2-5018-000 Clip, Cable 8-10 WT2-5114-000 Bushing 8-10 WT2-9501-000 Holder, Cable...

  • Page 223

    Table A-2 Numerical Parts List - continued Part No. Description XB4-7400-809 Screw, Tap Binding Head M4X8 8-10 XB4-7400-809 Screw, Tapping, Trus Head CH111 XB4-7401-007 Screw, Pan Head Self-tap XB4-7401-009 Screw, Bind Head Self-tap XB6-7300-809 Screw, Machine M3X8 XB6-7300-809 Screw, Machine M3X8 XB6-7300-809 Screw, Machine M3X8 XB6-7301-609...

  • Page 224

    A-16 Parts Index...

  • Page 225

    I/O Information Bi-Tronics Parallel Cable Information The Bi-Tronics parallel interface is compatible with Centronics parallel interfaces. To take advantage of its enhanced capabilities such as bi-directional communication between the computer and printer, faster transmission of data, and auto configuration of printer drivers the customer must have: Support in software applications for these features.

  • Page 226: Figure B-2 Connecting To The End Of A Localtalk Network

    Connecting to LocalTalk Networks The printer does not come with a LocalTalk network cable. Use a standard LocalTalk network cable and connector kit, such as the HP LocalTalk Network Cable Kit, part number 92215N. You will need one connector kit for each printer on the network, and another for each Macintosh computer on the network.

  • Page 227: Figure B-3 Connecting To The Middle Of A Localtalk Network (1 Of 2)

    Connecting to the MIDDLE of a LocalTalk Network Figure B-3 Connecting to the MIDDLE of a LocalTalk Network (1 of 2) Disconnect the printer from its power source. Insert the new connector box cable into the LocalTalk port of the printer. Insert one end of the new cable into the connector box.

  • Page 228

    Connecting to a Network. The printer supports up to four different cables: Bi-Tronics parallel, (Figure B-5, callout 1), BNC (ThinLAN) (Figure B-5, callout 2), 10Base-T (RJ-45) (Figure B-5, callout 3), and DIN-8 (LocalTalk) (Figure B-5, callout 4). Select the appropriate interface cable from those shown below for the system and connect the cable or cables to the printer.

  • Page 229

    DIN-8 (LocalTalk) Interface Plug the end of the DIN-8 cable into the LocalTalk port on the HP JetDirect card. N O T E If you are using only the LocalTalk port, 18 MIO NOT READY will appear every time you turn on the printer. This message will automatically disappear after 5 minutes.

  • Page 230: Table B-1 Novell Netware Frame Types

    Configuring Novell NetWare Frame Type Parameters. Normally selecting a NetWare frame type is not required. The HP JetDirect card automatically selects a NetWare frame type, and only when this selection is incorrect do you have to set the NetWare frame type through the HP LaserJet 4MV control panel.

  • Page 231

    Configuring TCP/IP Parameters The HP JetAdmin utility for UNIX (sold separately) may be used to configure TCP/IP parameters. If you do not have the HP JetAdmin utility for UNIX, or you are using a UNIX system other than HP-UX, Solaris, or SunOS, you may use the control panel of the printer to configure these TCP/IP parameters manually: Usage of the bootp file for configuration parameters (the default is to use...

  • Page 232

    Configuring Apple EtherTalk Phase Parameter To configure EtherTalk parameters: Line]. If you do not want to configure the phase parameter, Press Press [Item]. CFG ETALK=NO * appears. Press [+]. CFG ETALK=YES appears. Press [Enter]. CFG ETALK=YES * appears. Press [Item]. Phase=2 * appears. Press to change the phase parameter.

  • Page 233

    Disable Network Protocols (Optional). [On Line] Press to take the printer offline. [Menu] Press repeatedly until MIO MENU appears. Press [Item]. CFG NETWORK=NO * appears. Press [+]. CFG NETWORK=YES * appears. Press [Enter]. CFG NETWORK YES * appears. [Item] Press to scroll through each network protocol.

  • Page 234

    B-10 I/O Information...

  • Page 235

    Regulatory Information Laser Safety (U.S.A.) The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products marketed in the United States. This printer is certified as a “Class 1”...

  • Page 236

    Laser Statement (Finland) The following applies to printer operation and servicing in Finland. LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT HP LaserJet(s) 4V and 4MV laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käyt"ssä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle. Kirjoittimen on hyväksynyt Suomessa laserturvallisuuden osalta Sähk"tarkastuskeskus.

  • Page 237

    MSDS Information A Material Safety Data Sheet (MSDS) for toner or any other chemical used in the printer is available through Hewlett-Packard’s Customer Information Center by either mail or fax. By mail:...

  • Page 238: Figure C-1 Vcci Statement (japan)

    Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Any changes or modifications not expressly approved by Hewlett-Packard could void the user’s authority to operate this equipment. N O T E Use of a shielded interface cable is required to comply within the Class B limits in Part 15 of FCC rules.

  • Page 239

    Index 61.[x] SERVICE, service or error Centronics parallel interface B-1 00 OFFLINE, status message 7-6 message 7-13 character set 00 POWERSAVE, status message 63 through 67 SERVICE, service or selection 3-9 error message 7-13 character set, selection 3-9 00 READY, status message 7-6 68 READY/SERVICE, service or character voids 7-27 02 WARMING UP, status message...

  • Page 240

    CONT SELF TEST, test menu 3-19 COPIES, printing menu item 3-8 formatter PCA 5-10 CONT SELF TEST, test menu item copies, selection 3-8 installing 6-6 3-14 cover and doors 6-8 location 1-12, 5-14, 6-6 context-sensitive switching, PJL control panel 6-8 PostScript option 6-6 5-15 rear cover 6-12...

  • Page 241

    cold reset 3-15 HVPS PCA 5-6 HP CompuServe Forum 1-21 faded print 7-23 Intel 80969CF microprocessor HP FIRST (Fax Information fan motor 5-13 Retrieval Support Technology) described 5-9 MIO card 5-13 1-20 messages 7-13 MIO PCA 5-10 HP’s Distribution Center 1-16 faulty image examples 7-16 page count 3-17 HPD, HP’s Distribution Center...

  • Page 242

    Japanese VCCI Statement C-4 option 5-25, 5-27, 6-7, 6-44 MENUS LOCKED, status message job menu 3-10 LSTR, printer timing 5-28 default settings 3-10 Menus, control panel PWRSAVE 3-15 map of menus 3-7 main drive assembly job menu item MEt 5-15 removal and replacement 6-22 PAGEPROTCT 3-10 MF FEED message 7-9...

  • Page 243

    NVRAM (non-volatile memory) 5-14 see also 21 PRINT OVERRUN parallel menu items paper ADV FNCTNS 3-13 selection 3-8 HIGH SPEED 3-13 on line paper capacities 1-3 - 1-4 partial blank page 7-28 key 3-5 paper cassette 1-11 - 1-12, 1-15 parts light 3-4 guide 6-7, 7-29...

  • Page 244

    parallel B-1 refilled toner cartridges 1-18 14 NO TONER CART 7-8 Pitch toner low 7-8 16 TONER LOW 7-8 selection 3-9 transfer roller 4-3 18 MIO INIT 7-9 PITCH, PCL menu item 3-9 print resolution 1-3, 3-20, 5-21, 7-15 18 MIO NOT READY 7-9 PJL overview 5-15 print speed 1-3, 5-12, 5-14 20 MEM OVERFLOW 7-11...

  • Page 245

    STBY 5-28 card cage 6-16 described 5-11 WAIT 5-28 cartridge guide 6-36 self test information 3-20 printing menu 3-8 cassette pickup roller assembly status 3-20 default settings 3-8 6-37 RESOLUTION, job menu item 3-10 printing menu item control panel 6-8 resolution, print 1-3, 3-20, 5-21, COPIES 3-8 cover and doors 6-8...

  • Page 246

    ram size information 3-20 paper 1-8, 1-19, 7-8, 7-11, 7-21, gears 7-8, 7-25 replacing formatter PCA 3-17 7-23, 7-25 - 7-30 HVPS contacts 5-18 resource saving information 3-20 printer 1-6, 1-22, 2-3 image formation 7-16 REt information 3-20 transparency 1-9 image formation system 5-18 sample 3-20 standard cassette...

  • Page 247

    W0 JOB 600/A4, clearable warning message 7-15 W1 IMAGE ADAPT, clearable warning message 7-15 W2 INVALID PERS, clearable warning message 7-15 W3 JOB ABORTED, clearable warning message 7-15 W8 JOB 600/OFF, clearable warning message 7-15 W9 JOB 600/LTR, clearable warning message 7-15 WAIT, printer timing 5-28 warning messages 7-15...

  • Page 248

    Index-10...

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