HP 5L (C3941A) - Manual

List of Tables Table 1-1 Printer Features . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-2 Paper Capacities and Sizes . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-3 Performance Specifications . . . . . . . . . . . . . . . . . . . 1-5 Table 1-4 Electrical Specifications . . . ...

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

Printer Features Paper Capacities and Sizes Features HP LaserJet 5L (C3941A) Print Speed 4 ppm Text & Graphics Resolution 300 or 600 dpi Printer Language Enhanced PCL 5 Monthly Usage (pages) 4,000 pages Memory: Standard 1 Maximum Memory Capacity 1 Mbyte RAM9 Mbyte total (available in increments ...

Identification Model and Serial The model number and serial numbers are listed on identification labels located onthe bottom of the printer. The model number is alphanumeric, such as C3941A forthe HP LaserJet 5L printer. The serial number contains information about the Country of Origin, the Revisio...

Specifications Category Specification Print Speed* 4 ppm Monthly Usage (Duty Cycle) 4,000 pages Life Expectancy of Toner Cartridge (pages)** 2,500 pages @ 5% coverage First Print A4 <23 secondsLetter <23 seconds * Actual speed depends on data complexity and software handling efficiency. ** Ton...

Product Overview Front/Side Views of the Printer 1. Paper Input Support 7. Front Panel Button 13. Front Output Slot (face-up) 2. Paper Output Support 8. Paper Output Bin 3. Paper Guides 9. Paper Path Lever 4. Error (top) Light 10. Serial and Model Number (under printer) 5. Data (middle) Light 11. Pa...

Front Door Assemblies 14. Paper Release Lever 16. Transfer Roller 15. Toner Cartridge Compartment 17. EP Door Figure 1-3 Product Information 1-7

Back View of the Printer 18. Power Cable Connector 20. Memory Expansion Cover 19. Parallel Cable Connector Figure 1-4 I 1-8 Product Information

Service Approach Repair of the printer normally begins with the use of the printer’s internaldiagnostics in conjunction with the troubleshooting procedures in Chapter 7. Once afaulty part is located, repair is generally accomplished by assembly levelreplacement of Field Replaceable Units (FRUs). Som...

Print Utilities HP provides several utilities for enhancing use of the LaserJet printers in MS-DOSand Windows environments. More information on specific utilities is included witheach of the drivers listed in Table 1-6. Description Part Number SMO SME HPD HP LaserJet Family Quick Reference Service G...

Technical Assistance HP ASAP HP ASAP (Automated Support Access Program) provides free user technicalsupport information 24 hours a day, 7 days a week. The ASAP system includes HPAUDIO-TIPS and HP FIRST, both explained below. The ASAP service requires atouchtone phone. HP AUDIO-TIPS HP AUDIO-TIPS is ...

Customer Information Centers (North America Only) For presales information, contact the nearest Hewlett-Packard CustomerInformation Center, 1-800-752-0900 in North America. Customer Support Center (Assist Line) The HP Customer Support Center, (208-323-2551) is available to answer technicalquestions ...

Warranty This warranty gives you specific legal rights. You may also have other rights, whichmay vary from area to area. Hewlett-Packard warrants the 5L LaserJet printer against defects in materials andworkmanship for a period of one year from the date of purchase by the end user andis not transfera...

If you are using a mechanical switchbox, ensure that it is equipped with a surgeprotector. Damage to your printer could occur from the use of unprotectedmechanical switchboxes. The warranty period begins either on the date of delivery or, where the purchaseprice includes installation by Hewlett-Pack...

2 Site Requirements Contents Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Printer Space Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4The HP C3906A Toner Cartr...

Site Requirements Operating Environment The environmental requirements listed in the table below must be maintained toensure 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 ...

Printer Space Requirements Printer Space Requirements Figure 2-1 Description Dimension Width 13.2 in. (335.5 mm) Depth 12.3 in. (311.2 mm) Height (storage) (operational) 8.9 in. (227.5 mm)14.6 in. (372.7 mm)* Weight (with toner cartridge) 15.9 lbs. (7.2 kg) Toner cartridge weight** 1.5 lbs. (.7 kg) ...

The HP C3906A Toner Cartridge Toner cartridges contain components that are sensitive to light, temperature, andhumidity. Follow the recommendations in this section to ensure the highest qualityand longest life of HP toner cartridges. Keep the printer within the following environmental conditions for...

Toner Cartridge Handling Suggestions •• Before installing a cartridge, distribute the toner evenly by rotating the cartridgeback and forth five to six times. (See Figure 2-2.) Repeat this action when tonerbegins to run low. Toner Cartridge Distribution •• Do not touch the surface of the photosensiti...

3 Installation and Configuration Contents Unpacking and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Step 1: Choose the best location . . . . . . . . . . . . . . . . . . . . . . 3-3Step 2: Unpack the printer . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Step 3: Check...

Unpacking and Installation Before unpacking the printer, inspect the shipping container for signs of physicaldamage. Since a damaged shipping box is an indication of improper handlingduring shipping, the printer may also be damaged. N o t e If the shipping container has any sign of damage, unpack th...

Step 4: Install the toner cartridge 1 Open the EP Cartridge door. 2 Remove toner cartridge from its box and cut it open. Save the packing materials forpossible cartridge storage. 3 Shake the cartridge vigorously to distribute the toner evenly inside the cartridge.(See Figure 2-2.) 4 Grasp the toner ...

N o t e If your system does not meet these minimum requirements, only the PCL driversoftware will be installed. Minimum System Requirements •• 486 or above PC with 8 Mbytes DRAM (minimum) •• Fully functional bi-directional cable (IEEE 1284-compliant cable recommended) •• HP LaserJet 5L printer conne...

If you would like to connect another device to the LPT port you have configured touse with the HP LaserJet 5L, select the other device from the Microsoft WindowsControl Panel and restart windows. The HP LaserJet printer is capable of receiving and processing both PCLcommands and host-based generated...

Host-Based Printing Status To view your printer’s status, open the HP LaserJet 5L Printer group withinProgram Manager and select Status Window. As shown in Figure 3-2 below, thestatus window reports your printer’s current status. In this case, the printer is Ready. Host-Based Printing Status This ho...

PCL Printer Settings To change printer settings, select Control Panel, Printers, HP LaserJet 5L (PCL),Setup. The printer settings window will appear. (See Figure 3-3.) Select from thefollowing options: •• Paper—Select Paper Size, Paper Source (manual feed), Copies, Orientation(portrait or landscape)...

PCL Printing Status To view your printer’s status, open the HP LaserJet 5L PCL Printer group withinProgram Manager and select Status Window. As shown in Figure 3-4 below, thestatus window reports your printer’s current status. In this case, the printer is Ready. PCL Printing Status As with the host-...

Using the Control Panel Control Panel Layout The Control Panel consists of three status lights and a Front Panel Button located atthe front of the printer. The Control Panel consists of one button and three status lights. ERROR (Yellow) DATA (Green) READY (Green) These lights can be in only one of t...

LED Lights The LED lights provide a quick way to check the printer’s status. When this Indicator: Looks like this: It means this: Do this: On Blinking Ready Ready to print. Print job in progress. Let job finish printing. On Form Feed There is unprinteddata in the buffer. Briefly press the Front Pane...

When this indicator: Looks like this: It means this: Do this: Blinking Error (light blinking) Page TooComplex The page may be too complexfor the printer’s memory capacityor the printer may not be able tocreate the image fast enough tokeep pace with the engineprinting process. Briefly press and relea...

The Front Panel Button Depending on what state the printer is in, pressing the Front Panel Button allowsyou to control printing tasks by either starting or resuming a printer function. Usethe Front Panel Button to accomplish the following tasks: Function Action Lights Result Wake Up Briefly push and...

Printing a Self-Test Page A self-test page can be useful in troubleshooting printer problems and determiningwhich fonts have been downloaded to the printer. Self-test Page The self-test page includes an internal font listing showing all 26 provided fonts (1)and a listing of the current printer confi...

Continuous Self Test A continuous self test can be useful for troubleshooting paper path and otherproblems. To print a continuous self test: 1 Disconnect the printer from the power source. 2 Press and hold down the Front Panel Button while connecting power. 3 Continue holding the button for about fi...

Printing an Engine Test The engine test print can be used to verify that the print engine is functioningcorrectly. The Formatter PCA is completely bypassed during an engine test.Consequently, this test is useful for isolating engine printer problems. The enginetest prints a full page of vertical lin...

Resetting the Printer Resetting the printer accomplishes the following: •• Clears all data from the printer’s memory (including unprinted data, downloadedfonts, and macros). •• Stops any printing that is taking place and ejects the page. •• Removes some error conditions. •• Resets the printer to its...

4 Printer Maintenance Contents Life Expectancy of Consumables . . . . . . . . . . . . . . . . . . . . . . . 4-3Toner Cartridge Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Saving Toner with EconoMode . . . . . . . . . . . . . . . . . . . . . . 4-4Refilled Toner Cartridges . ....

Life Expectancy of Consumables Always inspect the components listed in Table 4-1 for wear when servicing theprinter. Replace these components as needed, based on printer failures or wear, notstrictly on usage. Description Part No. Est Life (pgs) Remarks Toner Cartridge(user replaceable) C3906A 2,500...

Toner Cartridge Life The toner cartridge has been designed to simplify the replacement of the printer’smajor “consumable” parts. The toner cartridge contains the printing mechanism anda supply of toner. When using a typical word-processing application, a tonercartridge will print approximately 2500 ...

proofs. EconoMode can be set through your printer driver. See Chapter 3 forinformation. N o t e s Some software applications may refer to this as “draft mode." Refilled Toner Cartridges While Hewlett-Packard does not prohibit the use of refilled toner cartridges duringthe warranty period or whil...

Cleaning the Printer To maintain the print quality, thoroughly clean the printer: •• Every time you change the toner cartridge. •• After printing approximately 2,500 pages. •• Whenever print quality problems occur. Clean the outside of the printer with a lightly water-dampened cloth. Clean theinside...

Cleaning Printer Components C A U T I O N To avoid permanent damage to the toner cartridge, do not use ammonia-basedcleaners on or around the printer. Do not touch the transfer roller with your fingers.Contaminants on the roller can cause print quality problems. COMPONENT CLEANING METHOD/NOTES Outsi...

Static Eliminator Teeth (located in front of the transfer roller) Cleaning Spilled Toner Defective toner cartridges can develop leaks. In addition, after a paper jam hasoccurred, there may be some toner remaining on the rollers and guides inside theprinter. The pages that print immediately after the...

5 Functional Overview Contents Basic Printer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3DC Controller/Power System . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Print Engine Control System . . . . . . . . . . . . . . . . . . . . . . . . 5-5Power System (on DC Cont...

Basic Printer Functions This chapter presents a generalized functional overview of the printer and theprinting processes. The following printer systems are discussed: •• DC Controller System/ Power System •• Formatter System •• Image Formation System •• Paper Feed System •• Laser/Scanner System Figu...

DC Controller/Power System The DC Controller PCA coordinates all print engine activities, drives the laser, andcoordinates print data from the Formatter PCA with the image formation process.The DC Controller also includes both AC and dc power supply and distributioncircuitry. The DC Controller contr...

Print Engine Control System Laser and Scanner Drive Based on information received from the Formatter, the DC Controller sends signalsto the Laser/Scanner Assembly to modulate the laser diode ON and OFF and todrive the Laser/Scanner motor. Refer to “Image Formation System,” later in thischapter for m...

Power System (on DC Controller PCA) The AC, dc, and high voltage power supply circuits are all contained within the DCController PCA. AC Power Distribution The AC power circuitry supplies AC voltage whenever the power cord is connectedto the AC power source. AC voltage is distributed to the dc power...

•• A job is received. •• The Front Panel Button is pressed. •• The printer front door is opened. N o t e The printer will not enter SleepMode if there is a printer error. High Voltage Power Distribution The High Voltage Power Supply PCA applies an overlap of dc and AC voltage tothe primary charging ...

Formatter System The Formatter PCA is responsible for the following: •• Receiving and processing print data from the printer interface. •• Monitoring Front Panel Button and relaying printer status information. •• Developing and coordinating data placement and timing with the print engine. •• Storing...

Control Panel Status LED Lights The Formatter uses three LEDs mounted under the printer cover to communicateprinter status to the user. Refer to “Using the Control Panel” in Chapter 3 and“Printer Error Troubleshooting” in Chapter 7 for more information on the lights. Front Panel Button The Formatter...

EconoMode The EconoMode setting uses approximately 50% less toner than standard modeprinting by reducing the dot density. However, EconoMode does not extend tonercartridge component life. EconoMode, which can also be thought of as “draftmode,” is user-selectable through some software applications. T...

Enhanced I/O The Enhanced I/O feature allows printer memory to be used for storing datareceived from the host computer. When Enhanced I/O is enabled, you can sendmore data to your printer in shorter amounts of time, which allows you to return toyour application sooner. Enhanced I/O has the following...

Image Formation System Laser printing requires the interaction of several different technologies (such aselectronics, optics, and electrophotographics) to provide a printed page. Eachprocess functions independently and must be coordinated with the other printerprocesses. Image formation consists of ...

Toner Cartridge As the “heart” of the Image Formation System, the toner cartridge houses thecleaning, conditioning, and developing steps of the process. The toner cartridgecontains the photosensitive drum, primary charging roller, developing station, tonercavity, and cleaning station. Including thes...

Step 4: Image Developing At this stage of the process, the latent electrostatic image is present on the drum.The toner particles obtain a negative surface charge by rubbing against thedeveloping cylinder which is connected to a negative dc supply. The negativelycharged toner is attracted to the disc...

Paper Feed System Both the Paper Input Bin and the Single Sheet Input Slot merge into one, main inputarea. Paper placed in either of these areas enables the Paper Out Sensor (sensor202), which informs the DC Controller that paper is present. When the printer receives a print job and is ready to prin...

Figure 5-5 shows a simplified paper path and the locations of the photosensors androllers. Simplified Paper Path Figure 5-5 5 - 16 Functional Overview

Figure 5-6 shows the locations of the photosensors, switches, solenoid, and otherimportant printer elements. Table 5-1 describes the function of each photosensorand the solenoid. Solenoid and Sensors Figure 5-6 No. Name Description SL1 Paper Pick-up Solenoid Enables the Paper Pickup Roller. PS201 Pa...

Paper Jam Detection The Paper Out Sensor (PS202), Paper Registration Sensor (PS203), and the PaperExit Sensor (PS201) detect when paper is moving through the printer. (See Figure5-5 for roller and sensor locations.) If a paper jam is detected, the DC Controllerimmediately stops the printing process ...

Basic Sequence of Operation The Formatter PCA and the DC Controller PCA share information during printeroperation. The DC Controller-to-Formatter Connector (J201) forms a link whichoperates as a serial data bus. This allows printer status, command information, anddot-image data to be passed between ...

General Timing Diagram Figure 5-7 5 - 20 Functional Overview

6 Removal and Replacement Contents Removal and Replacement Strategy . . . . . . . . . . . . . . . . . . . . . . 6-3Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4Installing Memory Cards (DRAM) . . . . . . . . . . . . . . . . . . . . . . 6-5Covers and Doors . . . ...

Removal and Replacement Strategy This chapter documents removal and replacement of Field Replaceable Units(FRUs) only. Exchange assemblies should be sent to SMO for repair. Replacement is generally the reverse of removal. Occasionally, notes are included toprovide direction for difficult or critical...

Required Tools •• #2 Phillips Screwdriver •• 5.5 mm Hexhead Screwdriver •• Small Flathead Screwdriver •• Needlenose Pliers. C a u t i o n A Posidriv screwdriver will damage the printer’s screw heads. Use Phillips only. Figure 6-1 shows the difference between a Phillips and a Posidriv screwdriver. No...

Covers and Doors Back Cover 1 Unplug the power cord and remove the parallel cable from the back of the printer. 2 Remove the toner cartridge. 3 Lift the Input Extender assembly. C a u t i o n You must lift the Input Extender when the covers are removed or it will break. 4 Remove the (3) screws (Figu...

5 Separate the rear panel from the main cover, pulling the lower corners away fromthe printer first, then using a flathead screwdriver to pry the two upper corners apart(Figure 6-3, callout 1). 6 To remove the cover, pull it downward (Figure 6-3, callout 2). Back Cover Removal (2 of 2) To reinstall ...

EP Door Assembly 1 Unplug the power cord and remove the parallel cable from the back of the printer. 2 Open the EP door. 3 Remove the toner cartridge. 4 Along the door hinge, there is a flex point. Press the left tab inward to release it.The right tab will fall out easily (Figure 6-4). EP Door Assem...

Memory Door 1 Unplug the power cord and remove the parallel cable from the back of the printer. 2 Remove the toner cartridge. 3 Gently tip the printer onto its side so that the Control Panel is on top. 4 Carefully pull the door tab out (Figure 6-5, callout 1) and away from the printer in agentle roc...

Main Cover and Paper Input Assembly 1 Remove the toner cartridge. 2 Remove memory door. C a u t i o n Remove the memory door first. The door will break if you remove the Main Coverwithout removing the memory door. 3 Remove the EP Door Assembly. 4 Remove the Back Cover. 5 Remove the (2) screws from t...

Internal Assemblies Control Panel 1 Remove the Printer Covers. 2 Release the Control Panel connector (Figure 6-7, callout 1). 3 Press the tab on the top of the Control Panel downward (Figure 6-7, callout 2). TheControl Panel will pop out of the printer chassis. 4 Lift the Control Panel out. Control ...

Exit Roller Assembly 1 Remove Printer Covers. 2 Grasp the tabs at the lower ends of the Exit Roller bushings and pull inward. Thiswill release the tabs from the printer chassis (Figure 6-8, callout 1). 3 Rotate the tabs 90 degrees, clear of the printer chassis (Figure 6-8, callout 2). 4 Lift the rol...

Delivery Assembly 1 Remove the Printer Covers and Exit Roller Assembly. 2 Remove the EP Right-Hand assembly by pressing the tab in (Figure 6-9, callout 1)and sliding the assembly toward the front of the printer (Figure 6-9, callout 2). N o t e The EP Right-Hand assembly must be removed to access any...

Fuser Pressure Plate 1 Remove Printer Covers and Delivery Assembly (Figures 6-9 and 6-10). 2 Remove the (2) screws (Figure 6-11, callout 1). 3 Press the Fuser Plate retainer clips out to release the Pressure Plate (Figure 6-11,callout 2). 4 Rotate the plate around and lift up to remove it (Figure 6-...

To reinstall: The Fuser Pressure Plate is kept in place by four locking mechanisms in eachcorner. Place the rear slits in the plate over the rear brackets that hold the FusingAssembly (Figure 6-12, callout 1). Lower the plate over the retaining clips, pressingon both sides of the Fuser Pressure Plat...

Heating Element 1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and FuserPressure Plate (Figure 6-11). 2 Remove the wire cover (on the right side of the printer) for the Heating Elementwires by pressing in on the tab and pulling outward (Figure 6-13, callout 1). Heating Element Re...

3 Disconnect the AC voltage to the Heating Element by releasing the connectorlocated on the DC Controller. Press down on the connector release with a small,flathead screwdriver (Figure 6-14, callout 1). (Since this is a small space, it is mucheasier to reach the connector with a screwdriver.) Pull s...

Pressure Roller 1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser PressurePlate (Figure 6-11), and Heating Element (Figures 6-13 through 6-15). 2 Remove the Pressure Roller guide by lifting the edge (Figure 6-16, callout 1) andthen rolling it gently backward (Figure 6-16, call...

Face-Up/Face-Down Lever 1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser PressurePlate (Figure 6-11), and Heating Element (Figures 6-13 through 6-15), and PressureRoller (Figure 6-16). 2 Rotate the lever forward 90 degrees (past the spring) and pull it straight out the fronto...

Fuser Exit Roller Assembly 1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser PressurePlate (Figure 6-11), and Heating Element (Figures 6-13 through 6-15), PressureRoller (Figure 6-16), and Face-Up/Face-Down Lever (Figure 6-17). 2 Remove the gear from the left end of the roller...

Paper Exit Sensor Flag 1 Remove the Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and FuserPressure Plate (Figure 6-11). 2 Remove the Paper Exit Sensor flag by pressing down on the left side and pulling upon the right side. To reinstall N o t e It is important that you reinstall the flag...

Top Assemblies Laser/Scanner Assembly 1 Remove the Printer Covers. 2 Remove both Laser/Scanner connectors (Figure 6-20, callout 1). 3 Remove all (4) screws and lift the assembly straight off (Figure 6-20, callout 2). Laser/Scanner Assembly Removal Figure 6-20 6 - 24 Removal and Replacement

Solenoid 1 Remove the Printer Covers. 2 On the left side of the printer, remove the paper pickup gear (Figure 6-21, callout 1)by pressing the tabs in the center of the gear outward and pulling the gear off(Figure 6-21). Solenoid Removal (1 of 2) Figure 6-21 Removal and Replacement 6 - 25

Pickup Roller Assembly 1 Remove the Printer Covers. 2 Remove the paper pickup gear (Figure 6-21). N o t e This gear is keyed to go on the shaft in only one way. 3 Remove the pickup roller grounding clip on the right of the printer by lifting eachend up and over the two metal guides and sliding the c...

Paper Feed Frame 1 Remove the Printer Covers. 2 Remove the Pickup Roller Assembly (Figures 6-23 through 6-24). 3 Release the connectors from the Laser/Scanner, Top Cover/EP Cartridge Sensor(PS203), Switch 101, Front Control Panel (Figure 6-26). Disconnect the Solenoidfrom the DC Controller at J204 (...

4 Remove the (4) hex head screws from the Paper Feed Frame (Figure 6-27, callout 1). 5 Remove the self-tapping screw from the back sheet metal plate and lift it off (Figure6-27, callout 2). Paper Feed Frame Removal (1 of 2) Figure 6-27 Removal and Replacement 6 - 31

6 Release the sensor unit connector (Figure 6-28). Paper Feed Frame Removal (2 of 2) 7 Pull the frame straight back to remove it. To reinstall The Paper Feed Frame may be easier to reinstall if you place the printer on its front,so that you can apply pressure while putting the screws back in place. ...

Transfer Roller Guide & Transfer Roller 1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25),and Paper Feed Frame (Figures 6-26 through 6-28). 2 Looking at the back of the printer, note the two small, hook-shaped release tabs oneach end of the Transfer Roller guide. Us...

Kick Plate 1 Remove the Printer Covers and the Pickup Roller Assembly (Figures 6-23 and6-24). 2 Press the Separation Pad (Figure 6-30). Allow the Kick Plate to pivot upward (aspring underneath will push it up). Lift the Kick Plate off its mounting pins. Kick Plate Removal Figure 6-30 6 - 34 Removal ...

To reinstall If the spring on the Kick Plate doesn’t stay on the Kick Plate, replace the spring,making certain the diameter of the spring surrounds two lower pins on the KickPlate and rests inside the third pin. Use needlenose pliers to place the springcorrectly. (See Figure 6-31.) Kick Plate Spring...

Separation Pad 1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 and 6-24), andKick Plate (Figure 6-30). 2 Lift the bottom of the white plastic tab on the rear of the Paper Feed Frame upslightly and slide it up, toward the top of the Paper Feed Frame. This will release theSeparation ...

Subpads N o t e When you replace the Separation Pad, you should also replace the smaller subpadsat the same time. 1 Place your index finger on the subpad. 2 Press toward the top of the printer. Subpad Removal Figure 6-33 Removal and Replacement 6 - 37

Feed Assembly The Feed Assembly is located in the Paper Feed Frame. 1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25),and Paper Feed Frame (Figures 6-26 through 6-28). 2 Turn the Paper Feed Frame upside down. 3 Remove the idler roller by lifting the plastic tab up (Figu...

4 Remove the self-tapping screw that holds the Feed Assembly in place (Figure 6-35,callout 1). Feed Assembly Removal (2 of 3) Figure 6-35 Removal and Replacement 6 - 39

5 Remove the Feed Assembly. 6 Turn the unit over. Lift the paper feed roller out (Figure 6-36). Feed Assembly Removal (3 of 3) To reinstall Before securing the screw, ensure the tabs on the Feed Assembly are positioned intheir slots on the Paper Feed Frame (Figure 6-35, callout 2). Failure to do so ...

Bottom Assemblies Memory Door Guide 1 Remove the Printer Covers. 2 Remove any extra memory. 3 Two tabs hold the memory door guide on the printer chassis. Press each tab inward(Figure 6-37). 4 Pull the memory door guide out. Memory Door Guide Removal Figure 6-37 Removal and Replacement 6 - 41

Motor 1 Remove the Printer Covers. 2 Remove the motor connector (Figure 6-38, callout 1). 3 Remove the memory door guide to expose the two motor screws. 4 Remove the motor screws (Figure 6-38, callout 2). 5 Lift the Motor out. Motor Removal Figure 6-38 6 - 42 Removal and Replacement

DC Controller 1 Remove the Printer Covers. 2 Disconnect the motor connector from the motor (Figure 6-38, callout 1). 3 Disconnect the Solenoid connector from the DC Controller (Figure 6-22, callout 1). 4 Remove the back sheet metal plate and disconnect the PS202/PS204 connector(Figure 6-28). 5 Remov...

Formatter PCA C a u t i o n ESD SENSITIVE!!! 1 Remove the Printer Covers and complete the DC Controller removal direction up tostep 8 (Figures 6-39 and 6-40). 2 Remove the two cable clips (Figure 6-42, callout 1). 3 Remove all (4) screws from the formatter cover (Figure 6-42, callout 2). Lift the I/...

7 Troubleshooting Contents General Troubleshooting Flowchart . . . . . . . . . . . . . . . . . . . . . . 7-3Paper Path and Components . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5DC Controller Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6Printer Error Troubleshooting ...

General Troubleshooting Flowchart When the ac power is first applied to the printer: •• Both the printer motor and the laser/scannermotor rotate for 6 seconds. •• All of the LEDs illuminate for one second; the“Ready” LED will illuminate after 3 seconds. If no error message is displayed, the Printer ...

General Troubleshooting Flowchart (continued) Refer to the section “Image FormationTroubleshooting,” later in this chapter. If the engine test produces a clear print image, yeta Self Test is not generated by initiating theControl Panel self-test procedure, replace theFormatter PCA. Perform an Engine...

Paper Path and Components Paper Path and Components PS201 PS203 PS202 SL1 Motor Feed Roller FeedSubRoller Pick-upRoller PaperRegistrationSensor PaperOutSensor Paper Pick-up Solenoid Photo-sensitiveDrum TransferRoller Fuser PaperExit Sensor Fusing UnitDeliveryRoller Face-upDelivery Deflector Face-dow...

DC Controller Diagram DC Controller PCA Components J3 Control Panel Connector (Formatter PCA) J202 Paper Registration and Paper-OutPhotosensors (PS203 and PS202) J102 Fusing Assembly J206 Fusing Assembly (thermistor feedback) J201 Formatter PCA Connection J207 Scanner Motor J204 Paper Pickup Solenoi...

Printer Error Troubleshooting Information regarding printer status is conveyed by two methods: 1) the printer’sControl Panel lights and 2) feedback through the bi-directional I/O that displays atthe PC. The basic method of determining error messages uses patterns of lights onthe Control Panel LED. P...

Printer Status Messages The following table lists printer LED messages and their meanings and describesrecommended actions. For more information on the Front Panel layout, refer to“Using the Control Panel” in Chapter 3, “Installation and Configuration.” LEDs Description Recommended Action Paper Out ...

Occasionally you may add paper, close the printer door, add the toner cartridge, andclear a paper jam, only to find that the printer still displays an error message. If thishappens, troubleshoot using Table 7-3 below. N o t e If the error appears and persists only after you attempt to print a page, ...

Service and Error Messages Service errors prevent further printer operation until some action is taken. Whenthere is a service error, all of the lights will turn on in a steady state. Press and holdthe Front Panel Button to see a pattern in the lights. (The error will only bedisplayed as long as thi...

Heating Element Resistance Check Figure 7-3 LEDs Description Recommended Action Beam Error. There are a number of causesfor this error, and some of the causes maybe transient. (They may disappear.) 1. Power-cycle the printer by unplugging the printerand plugging it back in. 2. Make certain the Laser...

LEDs Description Recommended Action Scanner Error. Caused by a scanner malfunction. 1. Power-cycle the printer by unplugging the printerand plugging it back in. 2. Ensure condensation caused by moving the printerfrom a cold to a warm environment hasn’t occurred.Allow the printer to acclimate to the ...

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

Image Defect Examples This section illustrates some image defects and their possible causes. Since there aremany variables in the printing process, you may encounter image defects that arenot illustrated in the following examples. If you find a defect that is not illustrated,record the probable caus...

Character Voids Character voids are white areas within the parts of characters that should be solidblack. • If you are using transparencies when you experience this problem, try anothertype of transparency. Hewlett-Packard transparencies are designed to minimizecharacter voids. (Because of the compo...

Blank Page (Occasional) A page is completely blank. If you get occasional blank pages: • Make sure your page length and margins are set correctly for the paper size youuse. If you are printing on small media and your page is blank, try printing onlarger media to see where the image is printing. Adju...

Distorted Image or BD Failure • Make certain the printer is not facing the sunlight. • The paper may not meet HP’s paper specifications. Select different paper. • Clean the Laser/Scanner Assembly by blowing compressed air in the slot on thebottom of the assembly. • Make sure the two Laser/Scanner co...

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, so this test isuseful for isolating printer problems. The engine test prints a full page of verticallines down the...

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) •• Develo...

Drum Rotation Functional Check The photosensitive drum, located in the toner cartridge, must rotate for the printprocess to work. The photosensitive drum receives its drive from the Main Driveassembly. To verify whether the drum is rotating: 1 Open the Printer Door. 2 Remove the toner cartridge. 3 M...

High-Voltage Power Supply Check The High-Voltage Power Supply PCA provides the necessary voltages for theelectrophotographic processes. A method for verifying the high-voltage system isgiven in the table below. Toner Cartridge High Voltage Connection Points (1 of 2) •• Charging (1) •• Drum Ground (2...

Toner Cartridge High Voltage Connection Points (2 of 2) •• Charging (1) •• Drum Ground (2) •• Developing Roller (3) Figure 7-6 Troubleshooting 7-25

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

Troubleshooting Tools Paper Path Check If paper is not being picked up or is not moving through the paper path, you maywant to observe all of the paper motion activities. Overriding PS204 allows you toobserve: •• Motor rotation •• Solenoid action •• Kick plate motion •• Paper Pickup Roller motion ••...

Repetitive Image Defect Ruler Repetitive Image Defect Ruler Figure 7-8 7-28 Troubleshooting

Main Wiring Diagram Figure 7-9 Main Wiring Diagram Troubleshooting 7-29

Connector Signal Name Remarks J401 pin 1 MA Motor Drive Signal J401 pin 2 /MA Motor Drive Signal J401 pin 3 MB Motor Drive Signal J401 pin 4 /MB Motor Drive Signal J204 pin 1 +12 V J204 pin 2 CPUD Solenoid SL1 Pickup Drive J202 pin 1 +5V J202 pin 2 GND J202 pin 3 PAPSENS “L” when PS202 detects paper...

8 Parts and Diagrams Contents How to Use the Part Lists and Diagrams . . . . . . . . . . . . . . . . . . . . 8-3 Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3Ordering Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4 Accessories and Supplies ....

How to Use the Part Lists and Diagrams The Figures in this chapter illustrate the major subassemblies in the printer and theircomponent parts. A table (material list) follows each exploded assembly diagram.Each table lists the reference designator (item number) for each part, the associatedpart numb...

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

Accessories and Supplies The following items are available through your local authorized HP dealer. To find adealer near you (or if your dealer is temporarily out of stock), call the HP CustomerInformation Center (800) 752-0900. N o t e Refer to “Related Documentation” in Chapter 1 for documentation...

Common Hardware Example Description Screw, Machine, Trus Head M3x4, M3x6, M3x8 Screw, Star, 3x6 Screw, Self-tap, 4x10 Screw, Hex-head, 3x8 Screw, Hexhead, 3x6,m 3x8, 3x10 Table 8-2 Common Fasteners Used in the Printer 8-6 Parts and Diagrams

Major Assembly Locations Figure 8-1 Parts and Diagrams 8-7

Ref. Part No. Ref. Description 1 RB1-7211-000CN 1 Input Extender 1 2 RB1-7212-000CN 1 Input Extender 2 3 RB1-7333-000CN 1 Back Cover 4 RB1-1995-000CN 1 Main Cover 4A RB1-7278-000CN 1 Face-up/Face-down Switch 5 RB1-7326-000CN 1 Output Extender 1 6 RB1-7327-000CN 1 EP Door Chimney 7 RB1-7331-000CN 1 O...

Internal Components (1 of 3) Figure 8-3 8-10 Parts and Diagrams

Ref Part No. Qty Description 1 RY7-5005-000CN 1 Gear Kit #1 2 RB1-7288-000CN 2 Exit Roller Bushing 3 RB1-7105-000CN 1 Fuser Release Tab 4 RB1-7106-000CN 1 Gear Plate 5 RB1-7107-000CN 1 Front Gear Case 6 RY7-5007-000CN 1 Fuser Release Assembly 7 RH7-1282-000CN 1 Main Motor 8 RY7-5006-000CN 1 Gear Kit...

Internal Components (2 of 3) Figure 8-4 8-12 Parts and Diagrams

Ref Part No. Qty Description 1 RB1-7109-000CN 1 Memory Door Guide 2 RB1-7247-000CN 1 Fuser Paper Guide 3 RB1-7344-000CN 1 AC Cable Cover 4 RF5-1509-000CN 1 Back Sheet Metal 5 RB1-7343-000CN 1 Control Panel Cable Guide 6 RB1-7130-000CN 1 Fuser Cable Guide 7 RB1-7234-000CN 1 Cap 8 RB1-7302-000CN 1 Cap...

Internal Components (3 of 3) Figure 8-5 8-14 Parts and Diagrams

Ref Part No. Qty Description 1 RB1-7223-000CN 1 Pickup Roller Grounding Clip 2 RB1-7246-000CN 2 PR Bushing 3 RB1-7341-000CN 1 EP Right Hand Guide #2 4 RF5-1516-000CN 1 Pressure Roller 5 RF5-1517-000CN 1 Fuser Pressure Plate 6 RF5-1530-000CN 1 Transfer Roller Guide 7 RF5-1534-000CN 1 Transfer Roller ...

DC Controller/Formatter and Cables Figure 8-6 8-16 Parts and Diagrams

The table below lists each connector, its cable length, and the number of pins. Connector Cable Length (inches) Number of Pins Fusing Assembly (J206) 5.5 (14 cm) 2 Laser Driver/Beam Detect Circuitry (J208) 21 (53 cm) 6 Door Open/No EP Cartridge (PS203) (J209) 14 (35 cm) 3 Scanner Motor (J 207) 14.5 ...

Pickup Roller Assembly Figure 8-7 8-18 Parts and Diagrams

Ref Part No. Qty Description 1 RB1-7177-000CN 1 Paper Feed Frame 2 RY7-5008-000CN 1 Separation Pad Assembly 3 RY7-5009-000CN 1 Input Sensor Assembly 4 RG5-1940-000CN 1 Pickup Roller Assembly 5 RB1-7184-000CN 1 Pickup Roller Bushing 6 RB1-7197-000CN 1 Clutch 7 RB1-7199-000CN 1 Back Grounding Clip 9 R...

Ref Part No. Qty Description RG5-1942-000CN 1 Feed Assembly 9 RB1-7226-000CN 1 Idler Roller Table 8-8 Parts and Diagrams 8-21

Separation Guide Assembly Figure 8-9 8-22 Parts and Diagrams

Ref Part No. Qty Description RG5-2013-000CN 1 Separation Guide Assembly 2 RB1-7276-000CN 1 Face-up/face-down Shaft 4 RB1-7289-000CN 1 Fuser Roller Bushing 7 RF5-1522-000CN 1 Fuser Exit Roller Assembly Table 8-9 Parts and Diagrams 8-23

Delivery Assembly Figure 8-10 8-24 Parts and Diagrams

Ref Part No. Qty Description RG5-2012-000CN 1 Delivery Assembly 1 RB1-7284-000CN 4 Delivery Roller #1 2 RB1-7285-000CN 2 Delivery Roller #2 3 RB1-7286-000CN 4 Delivery Spring#1 4 RB1-7287-000CN 2 Delivery Spring#2 6 RG5-2015-000CN 2 Spur Assembly Outside 7 RG5-2014-000CN 2 Spur Assembly Inside Table...

Parts Index Description Part No. Fig. Ref. AC Cable Cover RB1-7344-000CN 8-5 3 Back Cover RB1-7333-000CN 8-2 3 Back Grounding Clip RB1-7199-000CN 8-7 7 Back Sheet Metal RF5-1509-000CN 8-5 4 Cap RB1-7234-000CN 8-5 7 Cap RB1-7302-000CN 8-5 8 Case Grounding Metal RB1-7129-000CN 8-4 8 Clutch RB1-7197-00...

Part No. Description Fig. Ref. C3941-69001 DC Controller PCA (110V) Exchange 8-6 3 C3941-69002 DC Controller PCA (220V) Exchange 8-6 3 C3941-69003 Laser Scanner (Exchange) C3942-67902 Formatter (Exchange) 8-6 2 C3942-69002 Formatter (New) 8-6 2 RB1-1995-000CN Main Cover 8-2 4 RB1-7105-000CN Fuser Re...

B Regulatory Information Laser Safety (U.S.A.) The Center for Devices and Radiological Health (CDRH) of the U.S. Food andDrug Administration implemented regulations for laser products manufactured sinceAugust 1, 1976. Compliance is mandatory for products marketed in the UnitedStates. This printer is...

Laser Statement (Finland) The following applies to printer operation and servicing in Finland. LASERTURVALLISUUS LUOKAN 1 LASERLAITEKLASS 1 LASER APPARAT HP LaserJet(s) 4V and 4MV laserkirjoitin on käyttäjän kannalta turvallinen luokan1 laserlaite. Normaalissa käyt"ssä kirjoittimen suojakoteloin...

Toner Safety N o t e In case of toner spills, skin and clothing are best cleaned by removing as much toneras possible with a dry tissue, then washing with cold water. Hot water causes tonerto permanently set into clothing. MSDS Information A Material Safety Data Sheet (MSDS) for toner or any other c...