HP 6L - Manuals - manualsarea.com

Page 2 - Service Manual; HP LaserJet 5L

Service Manual HP LaserJet 5L HP LaserJet 6L (C3941A) (C3990A)

Page 4 - Conventions; This manual uses the following conventions:

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 beconfusing. I...

Page 5 - Chapter Descriptions; Here are required statements regarding RFI and laser safety.

Chapter Descriptions 1 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. 2 Site Requirements Here are recommendations pertaining to installation requirements. 3 Operating Overview ...

Page 6 - List of Figures; Front Door Assemblies

List of Figures Figure 1-1 HP LaserJet 5L Model and Serial Numbers . . . . . . . . . . . . 1-4 Figure 1-2 HP LaserJet 6L Model and Serial Numbers . . . . . . . . . . . . . 1-5 Figure 1-3 Front/Side Views of the Printer . . . . . . . . . . . . . . . . . . 1-7 Figure 1-4 Front Door Assemblies . . . . ...

Page 8 - List of Tables

List of Tables Table 1-1 Printer Features . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-2 Paper Capacities and Sizes . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-3 Performance Specifications . . . . . . . . . . . . . . . . . . . . 1-6 Table 1-4 Electrical Specifications . . ...

Page 9 - viii

Page 10 - Product Information; Contents; Ordering Parts

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

Page 12 - Paper Capacities and Sizes

Printer Features Paper Capacities and Sizes Features Descriptions Print Speed 4 ppm (HP LaserJet 5L); 6 ppm (HP LaserJet 6L) Text & Graphics Resolution 300 or 600 dpi Printer Language Enhanced PCL 5 Monthly Usage (pages) 4,000 pages (HP LaserJet 5L); 6,000 pages (HP LaserJet 6L) Memory: Standard...

Page 13 - Identification; Model and Serial; The labels also contain power rating and regulatory information.

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, and C3990A for the HP LaserJet 6L printer. The serial number contains informati...

Page 15 - Specifications

Specifications Category Specification Print Speed*: HP LaserJet 5LPrint Speed*: HP LaserJet 6L 4 ppm6 ppm Monthly Usage (Duty Cycle): HP LaserJet 5LMonthly Usage (Duty Cycle): HP LaserJet 6L 4,000 pages6,000 pages Life Expectancy of Toner Car tridge (pages)** 2,500 pages @ 5% coverage First Print A4...

Page 16 - Product Overview

Product Overview Front/Side Views of the Printer 1. Paper Input Suppor t 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. P...

Page 19 - Service Approach; Parts Exchange Program

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...

Page 21 - Technical Assistance

Technical Assistance Online Services: for24-hour access toinformation over yourmodem, we suggest theseservices. World Wide Web URL—Printer drivers, updated HP printer software, and product and supportinformation may be obtained from http://www.hp.com, or in Europe from http://www2.hp.com. In Japanpr...

Page 22 - Worldwide Support; North American Response Center

Worldwide Support U.S. and Canada: Customer Support &Product Repair Assistance (Please refer to thewarranty chapter of thismanual for additionalproduct repairinformation.) Call (208) 323-2551 Mon-Fri 6 am to 10 pm and Saturday 9 am to 4 pm (Mountain Time) free ofcharge during the Warranty Period...

Page 23 - Warranty; Warranty Exclusions

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 and 6L LaserJet printers against defects inmaterials and workmanship for a period of one year from the date of purchase bythe end user and is not t...

Page 24 - N o t e

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...

Page 26 - Site Requirements; Storing Opened Toner Cartridges

2 Site Requirements Contents Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Printer Space Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 The HP C3906A/F To...

Page 28 - Operating Environment; Consider the following points before installing the printer:; Site

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 an...

Page 30 - The HP C3906A/F Toner Cartridge; Storage Conditions; Inside the protective bag in which it was originally packaged.

The HP C3906A/F 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 f...

Page 31 - Toner Cartridge Handling Suggestions; Do not expose the cartridge to unnecessary vibrations or shock.

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 photosensitive...

Page 32 - Operating Overview; Operating Overview 3-1

3 Operating Overview Contents Using the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Control Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 LED Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 The Front Panel Bu...

Page 33 - -2 Operating Overview

Page 34 - Using the Control Panel; Control Panel Layout; OFF

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 andthree status lights. ERROR (Yellow) DATA (Green) READY (Green) + These lights can be in only one of ...

Page 35 - LED Lights; The LED lights provide a quick way to check the printer’s status.; -4 Operating Overview

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...

Page 36 - In

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...

Page 37 - The Front Panel Button; -6 Operating Overview

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 Lights Action Result Wake Up All lights are o...

Page 38 - Printing a Self-Test Page

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 for HP LaserJet 5L Figure 3-1 3 In s tal la ti on and Config u ratio n Operating Overview 3-7

Page 39 - -8 Operating Overview

Self-test Page for HP LaserJet 6L The self-test page lists the current printer configuration. (If any fonts have beendownloaded to the printer a second page will print.) To print a self-test page: 1 Make sure the Ready (bottom) Light is on, and all other lights are off. Wake up theprinter if necessa...

Page 40 - Continuous Self Test; Disconnect the printer from the power source.

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...

Page 41 - Printing an Engine Test; -10 Operating Overview

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...

Page 42 - Resetting the Printer; Resetting the printer accomplishes the following:; To Reset the Printer

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 fac...

Page 43 - -12 Operating Overview

Page 44 - Printer Maintenance; Toner Cartridge Life

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

Page 46 - Maintenance

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 HP LaserJet 5L Part Number HP LaserJet 6L Part Number Est Life (pgs) Remarks T...

Page 47 - Saving Toner with EconoMode

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 ...

Page 48 - Refilled Toner Cartridges

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...

Page 49 - Cleaning the Printer; To maintain the print quality, thoroughly clean the printer:

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 wi...

Page 50 - C A U T I O N

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...

Page 51 - Cleaning Spilled Toner

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...

Page 52 - Functional Overview; PJL Overview

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

Page 54 - Basic Printer Functions; Functional

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 Figure 5-...

Page 55 - DC Controller/Power System

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...

Page 56 - Print Engine Control System; Laser and Scanner Drive

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...

Page 57 - Laser/Beam Detect Circuitry; Overcurrent/Overvoltage Protection; There are two overvoltage /overcurrent devices in this printer:; SleepMode

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...

Page 58 - High Voltage Power Distribution

The printer exits SleepMode and all of the lights power on when any of thefollowing occur: • 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 ...

Page 59 - Formatter System; The Formatter PCA is responsible for the following:; CPU

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 fon...

Page 60 - Control Panel; Status LED Lights

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...

Page 61 - EconoMode

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...

Page 63 - Image Formation System

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 ...

Page 64 - Toner Cartridge; Step 1: Drum Cleaning

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...

Page 66 - Paper Feed System

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...

Page 69 - Paper Jam Detection; A paper jam can be detected under any of the following conditions:

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 ...

Page 70 - Basic Sequence of Operation

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 ...

Page 74 - Removal and Replacement

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

Page 76 - Removal and Replacement Strategy; C a u t i o n

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...

Page 77 - Required Tools; #2 Phillips screwdriver with a magnetic tip

Required Tools • #2 Phillips screwdriver with a magnetic tip • 5.5 mm hexhead nutdriver • 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 sc...

Page 79 - Covers and Doors; Back Cover; Remove the toner cartridge.

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. Afteryou have removed the cov...

Page 80 - To reinstall; Make certain the Input Extender is up.

5 Separate the rear panel from the main cover, pulling the lower corners away fromthe printer first. Then, insert the small flathead screwdriver into the openings at thetop to pop the upper corners (Figure 6-3, callout 1). 6 Remove the cover by grabbing it on both sides and pulling it straight back ...

Page 81 - EP Door Assembly

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. Firmly press the left tab inward torelease it. The right tab will fall out easily (Figure 6-4). EP Doo...

Page 82 - Memory Door; Remo

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...

Page 83 - Main Cover and Paper Input Assembly

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...

Page 84 - Internal Assemblies; Remove the Printer Covers.

Internal Assemblies Control Panel 1 Remove the Printer Covers. 2 Use the needlenose pliers to 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).The Control Panel will pop out of the printer chassis. 4 Lift the...

Page 85 - Exit Roller Assembly; Remove Printer Covers.

Exit Roller Assembly 1 Remove Printer Covers. 2 Grasp both 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 ro...

Page 86 - Delivery Assembly; Remove the Printer Covers and Exit Roller Assembly.

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...

Page 88 - Fuser Pressure Plate

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 toward the back and lift up to ...

Page 90 - Heating Element

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...

Page 92 - Lift the Heating Element out.; Make sure the connectors are properly reattached.

4 Remove the wire from the wire guides along the right-side of the printer. 5 Disconnect the thermistor feedback connector in the left front side of the FusingAssembly (Figure 6-15). Heating Element Removal (3 of 3) 6 Lift the Heating Element out. To reinstall Make sure the connectors are properly r...

Page 93 - Pressure Roller

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...

Page 94 - Pull the spring forward using needlenose pliers.

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...

Page 95 - Fuser Exit Roller Assembly

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...

Page 96 - Paper Exit Sensor Flag

Paper Exit Sensor Flag 1 Remove the Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and FuserPressure Plate (Figure 6-11). C a u t i o n Before proceeding to Step 2, examine the Paper Exit Sensor flag. It is important tonote the position of the spring mechanism on the flag. The spring must...

Page 97 - Top Assemblies; Laser/Scanner Assembly

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). N o t e One of the four screws is longer than the other three. Upon reinstallation,...

Page 98 - Solenoid

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 6 Remo v a l a nd Replac ement Removal and...

Page 100 - Pickup Roller Assembly

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 of the clip up and over the two metal guides and s...

Page 103 - Paper Feed Frame

Paper Feed Frame 1 Remove the Printer Covers. 2 Remove the Pickup Roller Assembly (Figures 6-23 through 6-24). 3 Disconnect the following: • Solenoid from the DC Controller at J204 (Figure 6-22, callout 1) • Two connectors from the Laser/Scanner (Figure 6-26, callout 1) • Connector from Top Cover/EP...

Page 107 - Transfer Roller Guide & Transfer Roller; This exposes the Transfer Roller.

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 6-29). 2 Looking at the back of the printer, note the two small, hook-shaped release tabs oneach end of the Transfer Roller guide. Us...

Page 108 - Kick Plate

Kick Plate C a u t i o n Be careful working with the Kick Plate and Separation Pad. The spring underneaththe Kick Plate may stay attached to the Kick Plate, but it is also likely to springaway from the Kick Plate. Place the spring aside for Separation Plate disassembly. 1 Remove the Printer Covers a...

Page 110 - Separation Pad

Separation Pad 1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 and 6-24), andKick Plate (Figure 6-31). 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 ...

Page 111 - Subpads

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 6-34 6 - 38 Removal and Replacement

Page 112 - Feed Assembly; The Feed Assembly is located in the Paper Feed Frame.

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 6-29). 2 Turn the Paper Feed Frame upside down. 3 Remove the Feed Roller Shaft by lifting the plastic tab up ...

Page 115 - Bottom Assemblies; Memory Door Guide

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 6-38). 4 Pull the memory door guide out. Memory Door Guide Removal Figure 6-38 6 - 42 Removal and Replacement

Page 116 - Motor

Motor 1 Remove the Printer Covers. 2 Remove the motor connector (Figure 6-39, callout 1). 3 Remove the memory door guide to expose the two motor screws. 4 Remove the motor screws (Figure 6-39, callout 2). 5 Lift the Motor out. Motor Removal Figure 6-39 6 Remo v a l a nd Replac ement Removal and Repl...

Page 117 - DC Controller

DC Controller 1 Remove the Printer Covers. 2 Disconnect the motor connector from the motor (Figure 6-39, 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 6-29). 5 Remov...

Page 120 - Formatter PCA

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 6-40 and 6-41). 2 Remove the two cable clips (Figure 6-43, callout 1). 3 Remove all (4) screws from the formatter cover (Figure 6-43, callout 2). Lift the I/Os...

Page 122 - Troubleshooting; Image Formation Troubleshooting

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

Page 124 - General Troubleshooting Flowchart; When the AC power is first applied to the printer:; If the Control Panel is not functional:; Continued on following page; roub

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 Do...

Page 125 - General Troubleshooting Flowchart (continued)

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...

Page 127 - DC Controller Diagram

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

Page 128 - Printer Error Troubleshooting; Priority of Errors

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...

Page 129 - Printer Status Messages

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 ...

Page 131 - Service and Error Messages

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...

Page 134 - Check the Toner Cartridge; Ensure that the toner cartridge is seated properly in the cavity.

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...

Page 135 - Image Defect Examples; Faded Print; Replace the; Staining

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...

Page 139 - Dark Background

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...

Page 141 - Distorted Image or BD Failure; Make certain the printer is not facing the sunlight.

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...

Page 142 - Troubleshooting Checks; Engine Test Button Location

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...

Page 143 - Half-Self Test Functional Check

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) • Developmen...

Page 144 - Drum Rotation Functional Check; Open the Printer Door.

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...

Page 147 - Paper Curl

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 ...

Page 148 - Troubleshooting Tools; Paper Path Check; Motor rotation

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 (5L) or SW101(6L) allows you to observe: • Motor rotation • Solenoid action • Kick plate motion • Paper Pickup R...

Page 154 - Parts and Diagrams

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

Page 156 - How to Use the Part Lists and Diagrams; Dia

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...

Page 157 - Ordering Consumables; The phone numbers are:

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...

Page 159 - Common Hardware

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

Page 180 - Parts Index

Page 182 - rt

Description Part No. Fig. Ref. Door Switch Cable (5L) RG5-2037-000CN 8-6 14 EP Door Assembly (5L) RF5-1501-030CN 8-2 8 EP Door Assembly (6L) RF5-2352-000CN 8-2 8 EP Door Chimney (5L) RB1-7327-000CN 8-2 6 EP Door Chimney (6L) RB2-1697-000CN 8-2 6 EP Left Hand Guide RF5-1514-000CN 8-5 10 EP Right Hand...

Page 192 - Regulatory Information

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...

Page 194 - Toner Safety; MSDS Information; Ozone Emission; to

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...

Page 196 - Fuser Accordian Jams; S E R V I C E; MODIFICATION RECOMMENDED; Service Notes

C Service Notes Fuser Accordian Jams C3941A-01 S E R V I C E N O T E SUPERSEDES: NONE HP C3941A LaserJet 5L Serial Numbers: <JPBB022333 <JPTB000101 <JPBJ041310 <JPBK006151 <JPBL033831 <JPTJ000101 <JPTK000101 <JPTL000101 <USBB158323 <JPTM080500 <JPBM007279 <JPBT000...

Page 198 - Fuser Jam Clearing Countermeasure; Service

Fuser Jam Clearing Countermeasure C3941A-02A S E R V I C E N O T E SUPERSEDES: C3941A-02 HP C3941A LaserJet 5L Serial Numbers: JPBK000000 / JPBK016388JPBL000000 / JPBL055374JPCW000000 / JPCW043448JPVW000000 / JPVW081157USCB000000 / USCB302011JPBV000000 / JPBV010501JPVV000000 / JPVV216255CNVM000000 /...

Page 200 - Index; Inde

Index A AC power distribution 5-6 circuitry 5-6 accessories and supplies 8-5acoustic emissions 1-6assistance, technical 1-12 B background scatter 7-16black page 7-16blank page all pages 7-18occasional 7-18 bottom assemblies DC Controller 6-44formatter PCA 6-47memory door guide 6-42motor 6-43 C cable...