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.
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.
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.
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;...
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.
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.:...
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.
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)
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.
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.
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.
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...
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...
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...
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...
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...
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...
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).
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.
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...
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...
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.
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.
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.
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...
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...
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.
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.
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.
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.
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...
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...
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.
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.
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).
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.
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...
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.
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.
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.
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...
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.
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).
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]...
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.
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.
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.
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.
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...
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...
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.
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.
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.
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...
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.
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.
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.
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.
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)”...
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).
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.
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”...
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.
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.
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...
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.
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.
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.
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.
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.
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.
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.
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...
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.
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.
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.
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.
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.
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.
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.
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.
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).
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.
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.
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).
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).
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.
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 ( ).
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).
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.
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.
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.
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).
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).
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).
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...
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.
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).
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 ( ).
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.
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.
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).
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).
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.
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).
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).
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).
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).
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 &...
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.
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).
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.
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.
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).
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...
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.
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.
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.
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.
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]...
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.
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.
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.
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.
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.
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.
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.
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.
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.
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...
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.
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.
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.
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.
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,”...
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.
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.
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.
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.
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.
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.
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)
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.
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.
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).
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...
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.
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.
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.
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).
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)
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...
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)
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...
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...
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...
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...
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...
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.
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.
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.
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.
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.
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.
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...
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.
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”...
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.
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:...
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.
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...
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...
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...