Manuale d’uso / di manutenzione del prodotto 5L del fabbricante HP (Hewlett-Packard)
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Printed on Recycled P aper *C3990-90991* *C3990-90991* C3990-90991 HP LaserJ et 5L and 6L Printer Ser vice Manual Copyright© 1997 He wlett P ackard Co.
Service Manu al HP LaserJet 5L HP LaserJet 6L (C3941A) (C3990A).
© Copyright He wlett-Packard Company 1997 All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. Publication number C3990-90991 First edition, May 1997 W arranty The information contained in this document is subject to change without notice.
Con ventions This man ual uses the following con ventions: Color is used to em phasize items which are im portant to the m aterial under discussion. The nam es of major printer parts and assemb lies are CAPIT ALIZED . Bold is used for emp hasis, particularly in situations wher e italic type would be confusing.
Chapter Descrip tions 1 Product Inf ormation Orientation to the printer, as well as the service and repair philoso phy , is discussed . Informatio n on obtaining assistance and warranty is also here. 2 Site Requirements Here are recomm endations pertainin g to installation requir ements.
List of Figur es Figure 1-1 HP LaserJet 5L Mo del and Serial Num bers . . . . . . . . . . . . 1-4 Figure 1-2 HP LaserJet 6L Mo del and Serial Num bers . . . . . . . . . . . . . 1-5 Figure 1-3 Front/Sid e V ie ws of the Prin ter . . . . . . . . . . . .
Figure 6-24 Pickup Roller Assembly Removal (2 of 2) . . . . . . . . . . . 6-28 Figure 6-25 Paper Pickup Rolle r Assembly Replacement (Inside/Front V ie w) 6-29 Figure 6-26 Paper Feed Frame Removal (1 of 4) . . . . . . . . . . . . . . 6-30 Figure 6-27 Paper Feed Frame Removal (2 of 4) .
List of T ables T able 1-1 Printer Fea tures . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 T able 1-2 Paper Capacities and Sizes . . . . . . . . . . . . . . . . . . . . 1-3 T able 1-3 Perform ance Specifications . . . . . . . . . . . . . . .
viii.
1 Pr odu ct Inf orm ation Contents Printer Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Paper Capacities and Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Identification . . . . . . . . . . . . . . . .
1-2 Product Info rmation.
Printer F eatures Paper Capacities and Sizes Features Description s Print Speed 4 ppm (HP LaserJet 5L); 6 ppm (HP LaserJet 6L) T e xt & Graphics Res olution 300 or 600 dpi Printer Language Enhance.
Identif ication Model and Serial The model num ber and serial numbers are listed on identification labels located on the bottom of the printe r . The model num ber is alphanum eric, such as C3941A for the HP LaserJet 5L printer, and C3990A for the HP LaserJet 6L prin ter .
HP LaserJet 6L Model and Serial Numbers Figure 1-2 1 Product Information Product Info rmation 1-5.
Specif ications Category Specificat ion Print Speed*: HP LaserJet 5L Print Speed*: HP LaserJet 6L 4 ppm 6 ppm Monthly Usage (Duty Cycle): HP LaserJet 5L Monthly Usage (Duty Cycle): HP LaserJet 6L 4,00.
Pr oduct Over view Front/Side Views of the Printer 1. P aper Input Suppor t 7. F ront Panel Button 13. F ront Output Slot (fac e-up) 2. P aper Output Suppor t 8. P aper Output Bin 3. P aper Guides 9. P aper Path Le ver 4. Error (top) Light 10. Serial and Model Number (under printer) 5.
Front Door Assemblies 14. P aper Release Lever 16. T ransf er Roller (do not touch) 15. T oner Car tridge Compar tment 17. EP Door Figure 1-4 1-8 Product Info rmation.
Back View of the Printer 18. P ower Cable Connector 20. Memory Expansion Cov er 19. P arallel Cable Connector Figure 1-5 I 1 Product Information Product Info rmation 1-9.
Service A ppr oach Repair of the printer normally begins with the use of the prin ter’ s internal diagnostics in conju nction with the troubleshootin g procedures in Cha pter 7. Once a faulty part is located, repair is generally accom plished by assembly level replacement of Field Repla ceable Units (FRUs).
Description Part Number PDO PCE HPD HP LaserJet F amily Quick Reference Service Guide 5021-0369 X X HP LaserJet 5L Printer User’ s Manual C3941-90901 X HP LaserJet 6L Printer User’ s Manual C3990-.
T echnical Assistance Online Services: fo r 24-hour access to inf ormation ov er your modem, we suggest these services. W orld Wide Web URL —Printer drivers , updated HP printer softw are, and product and suppor t inf ormation ma y be obtained from http://www .
W orldwide Support U.S. and Canada: Customer Support & Product Repair Assista nce (Please refer to the warranty chapter of this manual for addi tional product repai r informa tion.
W arranty This warranty gives you specific le gal rights. Y ou m ay also have other rights, which may vary from area to area. Hewlett-Packard warrants the 5L and 6L Laser Jet printers against defects in materials and workm anship for a period of one year fro m the date of purchase by the end user and is not transferable.
If you are using a mechanical switchb ox, ensure that it is equipped with a surge protector . Dam age to your printer could occur from the use of unprotected mechanica l switchboxes. The warranty perio d begins either on the date of delivery or , where the purch ase price includes installation by Hewlett-Packard, on the date of installation .
1-16 Prod uct Inform ation.
2 Site Req uirements Contents Site Requirem ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Printer Space Requirem ents . . . . . . . . . . . . .
2 -2 Site Requirem ents.
Site Requir ements Operating En vironment The environmental requiremen ts listed in the table below must be maintained to ensure the pro per operation of this printer . Consider the following poin ts before installing the printer: • Install in a well-ventilated, dust- free area.
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 (stor age) (operational) 8.9 in. (227.5 mm) 14.6 in. (372.7 mm)* W eight (with toner ca r tridge) 15.9 lbs.
The HP C3906A/F T oner Cartridge T oner cartridges contain com ponents that are sensitive to light, temp erature, and humidity . Follow the recommendations in this section to ensure the high est quality and longest life of HP tone r cartridges. Keep the printer within the following en vironmen tal conditions for optim um perform ance.
T oner Cartrid ge Handling Sugge stions • Before installing a cartrid ge, distribute the tone r evenly by rotating the cartridg e back and forth five to six tim es. (See Figure 2-2.) Repe at this action when toner begins to run low . Toner Cartridge Distribution • Do not touch the surfac e of the photosensitive drum in the cartridg e.
3 Operating Overview Contents Using the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Control Panel La yout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 LED Lig hts . . . . . . . . . . . . . . . . . . . .
3-2 Operating Overview.
Using the Control Panel Control Panel Layout The Con trol Panel consists of three status lights and a Front Panel Butto n located at the front of the printer .
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 unprinted data in the buff er.
When this indicator: Looks like this: It means this: Do this: Blinking Err or (light blinki ng) P age T oo Complex The page may be too compl ex for the printer’ s memory capacity or the printer may not be ab le to create the image fas t enough to keep pace with the engine printing process .
The Front Panel Button Depending on what state the printer is in, pressing the Front Panel Butto n allows you to control printing tasks by either starting or resuming a printer fun ction. Use the Front Panel Button to accom plish the following tasks: Function Lights Action Result W ake Up All lights are off while plugged into power source.
Printing a Self-T est Page A self-test page can be useful in troubleshooting printer problem s and determining which fon ts hav e been downloaded to the printer .
Self-test Page for HP LaserJet 6L The self-test page lists the curr ent printer configuration. (If any fonts have been downloaded to the printer a second page will print.) T o print a self-te st page: 1 Make sure the Ready (bo ttom) Light is on, and all other lights are off.
Continuou s Self T est A continuous self test can be usefu l for troubleshooting paper path and other problem s. T o prin t a continuous self test: 1 Disconnect the printer from the power source. 2 Press and hold down the Front Panel Button while con necting power .
Printing an Engin e T est The engine test prin t can be used to verify that the print engine is functioning correctly . The Formatter PCA is completely bypassed durin g an engine test. Consequently , this test is useful for isolating engine prin ter problems.
Resetting the Printer Resetting the printer accom plishes the following: • Clears all data from the prin ter’s memor y (including unpr inted data, download ed fonts, and macros). • Stops any printing that is taking place and ejects the page. • Removes some erro r conditions.
3-12 Operating Overview.
4 Printer M aintenance Contents Life Expectancy of Consu mables . . . . . . . . . . . . . . . . . . . . . . . . 4-3 T oner Cartridge Lif e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Saving T oner with EconoMode . . . . . . . . . .
4-2 Printer Ma intenance.
Life Expectancy of Consum ables Always inspect the components listed in T able 4-1 for wear when servicing the printer . Replace these com ponents as needed, based on printer failures or wear , not strictly on usage.
T oner Cartridge Life The toner cartridg e has been designed to simplif y the replacemen t of the printer’ s major “consu mable” parts. Th e toner cartridge conta ins the printing mechanism and a supply of toner .
proofs. Eco noMode can be set throu gh your printer driver . See Chapter 3 for informa tion. Notes Some software applicatio ns may refer to this as “draf t mode.
Cleaning the Printer T o main tain the print quality, thorough ly clean the printer: • Every time you change the toner cartrid ge. • After printin g approxim ately 2,500 pages. • Whenev er print quality problems occur. Clean the outside of the printer with a lightly water-dampene d cloth.
Cleaning Printer Comp onents CAUTION T o avoid permanen t damage to the toner cartridge, do not use am monia-based cleaners on or arou nd the printer . Do not touch the transfe r roller with your fingers. Contam inants on the roller can cause print quality prob lems.
Static Eliminator Teeth (located in front of the transfer roller) Cleaning Sp illed T oner Defective toner cartridges can develop leaks. In addition, after a paper jam has occurred, there ma y be some toner rem aining on the rollers and guid es inside the printer .
5 Functional Overview Contents Basic Printer Fu nctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 DC Controller/P ower System . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Print Eng ine Control System . . . . . . . . . . .
5 - 2 Functional Overview.
Basic Printer Fu nctions This chapter presen ts a generalized func tional overvie w of the printer and the printing processes. The following printe r systems are discussed: • DC Controller System / .
DC Controller/P ower System The DC Controller PCA coordinates all print engine activities, drives the laser, and coordinates prin t data from the Formatter PCA with the imag e formation pro cess. The DC Controller also includes both A C and DC po wer supply and distribution circuitry .
Print Engine Control System Laser and Scanne r Drive Based on informa tion received from the Formatter , the DC Controller sends signals to the Laser/Scan ner Assembly to modulate the laser diod e ON and OFF and to drive the La ser/Scanner m otor . Refer to “Im age Formation System ,” later in this chapter for mo re informatio n.
P ower System (on DC Contr oller PCA) The A C, DC, and high voltage po wer supply circuits are all contained within the DC Controller PCA . AC Power Distr ibution The AC power circuitry supplies A C voltage whenever the power cord is connected to the A C power source.
The printe r exits SleepMode and all of the lights power on when any of the following occur: • A job is received. • The Front Pan el Button is pressed. • The printer fron t door is opened. Note The printe r will not enter SleepMo de if there is a printer error .
F ormatter System The Formatter PC A is responsible for the following: • Receiving and processing print data from the printer interfa ce. • Monitorin g Front Pane l Button and relaying prin ter status informatio n. • Developing and coord inating data placem ent and timing with the print engin e.
Control Panel Status LED Lights The Forma tter uses three LEDs mo unted under the printer cover to commu nicate printer status to the user . Refer to “Usin g the Control Panel” in Chap ter 3 and “Printer Erro r T roubleshoo ting” in Chapter 7 for m ore information on the lights.
EconoMode The EconoM ode setting uses approxim ately 50% less toner than standard mode printing by reducin g the dot density . Howe ver , EconoM ode does not extend toner cartridge com ponent life. Eco noMode, which can also be thou ght of as “draf t mode,” is user-selectable through som e software applications.
Enhanced I/O The En hanced I/O feature allows printer mem ory to be used for storing data received from the host computer . When En hanced I/O is enabled, you can send more data to your prin ter in shorter amo unts of time, which allows you to return to your applica tion sooner .
Image F ormation System Laser printing requ ires the interaction of several dif ferent techn ologies (such as electronics, optics, and electrophotog raphics) to provide a printed page . Each process functions indep endently and mu st be coordinated with the other printer processes.
T oner Cartridge As the “heart” of the Image Form ation System, the toner cartridg e houses the cleaning, cond itioning, and developing steps of the process. The toner cartridge contains the pho tosensitive dru m, primary charging roller, de veloping station, toner cavity , and cleaning station.
Step 4: Image Developing At this stage of the process, the latent electrostatic image is present on the dru m. The toner particles obtain a negative surface charge by rubb ing against the developing c ylind er which is conn ected to a negative DC supply .
Paper Feed System Both the Paper Input Bin and the Sing le Sheet Input Slot merge into one, m ain input area. Paper placed in either of these areas enab les the Paper Out Sensor (sensor 202), whic h informs the DC Contr oller that paper is present.
Figure 5-5 shows a simplified paper path and the locatio ns of the photosensors and rollers. Simplified Paper Path Figure 5-5 5 - 16 Functional Overview.
Figure 5-6 shows the locations of the photosensors, switches, solenoid , and other importan t printer elements. T able 5-1 describes the function of each photo sensor and the solenoid. Solenoid and Sensors Figure 5-6 No. Name Description SL1 P aper Pick-up Sol enoid Enable s the P aper Pickup Roller .
Paper J am Detection The Paper Out Sensor (PS 202), Paper Registration Sensor (P S203), and the Paper Exit Sensor (PS 201) detect when paper is moving through the printer .
Basic Sequence of Operation The Forma tter PCA and the DC Controller PC A share informatio n during prin ter operation. The DC Con troller-to-Formatter Connector (J201) forms a link which operates as a serial data bus. This allows printer status, command informa tion, and dot-imag e data to be passed between the two PCA s.
General Timing Diagram - HP LaserJet 5L Figure 5-7 5 - 20 Functional Overview.
General Timing Diagram - HP LaserJet 6L Figure 5-8 5 Functional Overvi ew Functional Overview 5 - 21.
5 - 22 Functional Overview.
6 Remov al and Replacemen t Contents Removal and Replacement Strategy . . . . . . . . . . . . . . . . . . . . . . . 6-3 Required T ools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4 Installing Memor y Cards (DRAM ) . . . . . .
6 - 2 Removal and Replacement.
Remov al and Replacement Strategy This chapter doc uments rem ov al and replacement of Field Replac eable Units (FR Us) only . Exchange assemb lies should be sent to SMO for repa ir . Replacem ent is generally the reverse of removal. Occasionally , notes are included to provide direction for difficult or critical replacement proced ures.
Required T ools • #2 Phillips screwd river with a magnetic tip • 5.5 mm hexhea d nutdriver • small flathead screw driver • needlenose pliers Cautio n A Posidriv scre wdriver will damage the printer’ s screw heads. Use Phillips only . Figure 6-1 shows the difference between a Phillips and a Posidriv screwdri ver .
Installing Memory Cards (DRAM) 1 Unplug the pow er cord from the printer . You should not install a mem ory card while the printer is in SleepMode. 2 Open the Printer Doo r, remove the toner cartridge, and close the Prin ter Door. Pro tect the toner cartridge from light while you are working on the printer.
Cov ers and Doors Back Cover 1 Unplug the power cord and rem ove the parallel cable from the back of the printer . 2 Remove the toner cartridg e. 3 Lift the Input Exten der assembly . Cautio n Y ou m ust lift the Input Extender when the cov ers are removed or it will break.
5 Separate the rear pane l from the main cover , pulling the lower corners away from the printer first. Then, insert the small flathead scre wdriver into the open ings at the top to pop the upper corner s (Figure 6-3, callout 1). 6 Remove the cover by grabbing it on both sides and pulling it straight back with a firm pull (Figure 6-3, callout 2).
EP Door Assemb ly 1 Unplug the power cord and rem ove the parallel cable from the back of the printer . 2 Open the EP doo r . 3 Remove the toner cartridg e. 4 Along the door hinge, there is a flex point. Firm ly press the left tab inward to release it.
Memory Door 1 Unplug the power cord and remove the parallel cable fro m 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 (Figu re 6-5, callout 1) and away from the printer in a gentle rocking m otion (Figure 6-5 , callout 2).
Main Cover and P aper Input Assembly 1 Remove the toner cartridg e. 2 Remove memory door . Cautio n Remove the memo ry door first. The door will break if you rem ove the Ma in Cov er without rem oving the memory door . 3 Remove the EP Door Assembly . 4 Remove the Back Cover .
Inter nal Assemblies Control Panel 1 Remove the Printer Covers. 2 Use the needlenose pliers to release the Contr ol Panel connector (F igure 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.
Exit Roller Assembly 1 Remove Printer Covers. 2 Grasp both tabs at the lower ends of the Exit Roller bushings and pull inward. This will release the tabs from the prin ter chassis (Figure 6-8, callout 1). 3 Rotate the tabs 90 degrees, clear of the printer chassis (Figure 6-8, callout 2).
Delivery Assembly 1 Remove the Pr inter Covers and Exit Ro ller Assembly . 2 Remove the EP Right-Han d assembly by pressing the tab in (Figu re 6-9, callout 1) and sliding the assembly toward the front of the printe r (Figure 6-9 , callout 2). Note The EP Right-Han d assembly m ust be removed to access any fuser components.
3 Use the magnetic screwdriver to remove the (2) scre ws (Fig ure 6-10, callout 1). Once the screws have been removed, rotate the rear of the Deli very Assembly up and forward and lift it out of the printer .
Fuser Pr essure Plate 1 Remove Printer Cov ers and Deliv ery Assembly (Figu res 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 Pressur e Plate (Figure 6-11 , callout 2). 4 Rotate the plate around and toward the back and lift up to remove it (Figure 6-11 , callout 3).
To reinstall: The Fuser Pre ssure Plate is kept in place by four locking mechanism s in each corner . Place the rear slits in the plate over the rear brackets that hold the Fusing Assembly (Fig ure 6-12, callout 1). Lower the plate over the retaining clips, pressing on both sides of the Fuser Pressure Plate (Fig ure 6-12, callout, 2).
Heating Element 1 Remove Printer Cov ers, Deli very Assembly (Figures 6-9 and 6-1 0), and Fuser Pressure Plate (Figu re 6-11). 2 Remove the wire cover (on the right side of the printer) for the Heating Elem ent wires by pressing in on the tab and pulling outward (F igure 6-13, callout 1).
3 Disconnect the A C v oltage to the Heating Element by releasing the connector located on the DC Controller . Press down on the connector release with a small, flathead screwdri ver (Figure 6-14 , callout 1). (Since this is a small space, it is much easier to reach the connector with a screwdri ver .
4 Remove the wire from the wir e guides along the right-side of the printe r . 5 Disconnect the therm istor feedback conn ector in the left front side of the Fusing Assembly (Figu re 6-15). Heating Element Removal (3 of 3) 6 Lift the Heating Element out.
Pressur e Roller 1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10) , Fuser Pressure Plate (Figure 6-11) , and Heating Element (Figu res 6-13 throu gh 6-15). 2 Remove the Pressure Rolle r guide by lifting the edge (Figure 6-1 6, callout 1) and then rolling it gently backward (Figu re 6-16, callout 2).
F ace-Up /F ace-Down Lever 1 Remove Printer Cov ers, Deli very Assembly (Figures 6-9 and 6-1 0), Fuser Pressure Plate (Figure 6-1 1), and Heating Ele ment (Figures 6-13 thro ugh 6-15), and Pressur e Roller (Figure 6-16 ). 2 Rotate the le ver forward 90 degrees (past the spring) and pull it straigh t out the front of the printer .
Fuser Exit Roller Assemb ly 1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10) , Fuser Pressure Plate (Figure 6-11) , and Heating Element (Figu res 6-13 throu gh 6-15), Pre ssure Roller (Figure 6-16 ), and Face-Up/Face-D own Le ver (Figure 6-17).
Paper Exit Sensor Flag 1 Remove the Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and Fuser Pressure Plate (Figu re 6-11). Caution Before procee ding to Step 2, examine the Paper E xit Sensor flag. It is important to note the position of the spring mech anism on the flag.
T op Assembl ies Laser/Scanner Assembly 1 Remove the Printer Covers. 2 Remove both Laser/Scan ner connectors (Fig ure 6-20, callout 1). 3 Remove all (4) screws and lift the assembly straight off (Figure 6-20, callout 2). Note One of the four screws is longer than the other three.
Solenoid 1 Remove the Printer Covers. 2 On the left side of the printer , remove the paper pickup gear (Figu re 6-21, callout 1) by pressing the tabs in the center of the gear outward and pulling the gear off (Figure 6-2 1).
3 Remove the Solenoid conn ector (J204) from the DC Con troller (Figure 6-2 2, callout 1). 4 Remove the self-tapping screw that holds the Solenoid in place (Fig ure 6-22, callout 2). 5 Unthread the wires from the printer chassis. 6 Lift the Solenoid off.
Pickup Roller Assembly 1 Remove the Printer Covers. 2 Remove the paper pickup gear (Figu re 6-21). Note This gear is ke yed to go on the shaft in only one way . 3 Remove the pickup roller gro unding clip on the right of the printe r by lifting each end of the clip up and over the two m etal guides and sliding the clip off.
4 Using needlenose pliers, pull the bottom of the bushing out (Figure 6-24 , callout 1), then turn it counter clockw ise to release it (Figure 6-24, callout 2).
To reinstall After placing the Picku p Roller shaft through on the left side, line up the Idler Roller tabs while repositioning the right side. Rock the shaft back and forth until the Pickup Roller and the Idler Rolle r tabs are correctly reinstalled.
Paper F eed Fram e 1 Remove the Printer Covers. 2 Remove the Pickup Roller Assembly (Figures 6-23 throug h 6-24). 3 Disconnect the following: • Solenoid from the DC Controller at J204 (Fig ure 6-22,.
4 Release the catch on the control pane l cable guide by using the small flathead screwdri ver to push on the tab (Fig ure 6-27). Th en slide the guide off.
5 Remove the self-tapping screw from the back sheet metal plate and lift it off (Figure 6-28, callout 1). 6 Remove the (4) hex head screws from the Paper Feed Frame (Figure 6-2 8, callout 2).
7 Release the sensor unit connector (Figu re 6-29). Paper Feed Frame Removal (4 of 4) 8 V erify that all cables are clear of the fram e and pull the fram e straight back to remove it.
T ransfer Roller Guide & T ransfer Roller 1 Remove the Printer Cov ers, Pickup Roller Assembly (Figu res 6-23 through 6-25), and Paper Feed Frame (F igures 6-26 through 6-29 ). 2 Looking at the back of the prin ter , note the two small, hoo k-shaped release tabs on each end of the T ransfer Roller guid e.
Kick Plate Caution Be careful working with the Kick Plate and Separation Pad. The spring underneath the Kick Plate may stay attached to the Kick Plate, but it is also likely to spring away from the Kick Plate. Place the spring aside for Separation Plate disassem bly .
To reinstall If the spring on the Kick Plate doe sn’t stay on the Kick Plate, replace the spring, making certain the diam eter of the spring surrounds two lower pins on the Kick Plate and rests inside the third pin. Use needle nose pliers to place the spring correctly .
Separation Pad 1 Remove the Printer Covers, Picku p Roller Assembly (Figures 6-23 and 6-24 ), and Kick Plate (Figure 6-31 ). 2 Lift the bottom of the white plastic tab on the rear of the Paper Feed Fram e up slightly and slide it up, toward the top of the Paper Feed Frame.
Subpads Note When you replace the Separ ation Pad, you should also replace the smaller subpa ds at the same time. 1 Place your index finger on the subpad.
F eed Assembly The Feed Assembly is located in the Paper Feed Frame. 1 Remove the Pr inter Covers, Pickup Roller Assembly (Figures 6-23 throu gh 6-25), and Paper Feed Frame (Fig ures 6-26 throu gh 6-29).
4 Remove the self-tapping screw that holds the Feed Assembly in place (Figure 6-36, callout 1). Note Before proc eeding to Step 5, examine the tabs and how they fit into their slots (Figure 6-36, callout 2). The tabs mu st be reinstalled to exactly this position .
6 T urn the Feed Assem bly over and place it in one han d with the roller-side down. Pop one of the tabs on the other side and the feed roller should fall into your hand (Figure 6-3 7).
Bottom Assemblies Memory Door Guide 1 Remove the Printer Covers. 2 Remove any extra memory . 3 T wo tabs hold the mem ory door guide on the printe r chassis.
Motor 1 Remove the Printer Covers. 2 Remove the motor connec tor (Figure 6-39 , callout 1). 3 Remove the memor y door guide to expose the two motor screws.
DC Controller 1 Remove the Printer Covers. 2 Disconnect the m otor connector fro m the motor (Figu re 6-39, callout 1). 3 Disconnect the So lenoid connector from the DC Controller (Figure 6-2 2, callout 1). 4 Remove the back sheet metal plate and disconnect the PS 202/PS204 conn ector (Figure 6-29) .
8 Lift the bottom plate, rotating the plate toward you from the back as if hing ed on the front. Release the Fusing Assembly con nector (J206) (Figure 6-41 , callout 1).
9 Remove the (7) remaining conne ctors (Figure 6-42 , callout 1). 10 Remove the screws (5) that secure the DC Controller to the m etal case (Figure 6-42, callout 2). DC Controller Removal (3 of 3) 11 Remove the DC Controller by lifting gently on the side oppo site the form atter , then sliding it out.
F ormatter PCA Caution ESD SE NSITIV E! 1 Remove the Printer Covers and complete the DC Con troller removal direction up to step 8 (Figures 6-40 and 6-4 1). 2 Remove the two cable clips (Figure 6-4 3, callout 1). 3 Remove all (4) screws from the formatter cover (Figure 6-43 , callout 2).
6 - 48 Removal and Replacement.
7 T r oublesh ootin g Contents General T roubleshootin g Flo wchart . . . . . . . . . . . . . . . . . . . . . . . 7-3 Paper Path and Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 DC Controller Diag ram . . . . . . . . . . . . . .
7-2 T roubleshoo ting.
General T roubleshooting Flowchart When the AC pow er is first applied to the printer : • Both the printer mo tor and the laser/scanner motor rotate for 6 second s. • All of the LEDs illum inate for one second; the “Ready” L ED will illuminate after 3 second s.
General T r oub leshooting Flowch art (continued) Refer to the section “Image Form ation Troublesho oting,” later in this chapter. If the engine test produces a clear prin t image, yet a Self Test is not generated by initiating the Control Pan el self-test procedure, replace the Formatter PC A.
Paper Path and Comp onents Paper Path and Components PS201 PS203 PS202 SL1 Motor Feed Roller Feed Sub Roller Pick-up Roller Paper Registration Sensor Paper Out Sensor Paper Pick-up Solenoid Photo- sen.
DC Controller Diagram DC Controller PCA Components J3 Control Panel Con nector (Formatter PCA) J202 Paper Registration and Paper-Out Photosensors (PS 203 and PS202) J102 Fusing Assembly J206 Fusing As.
Printer Error T roubleshooting Inform ation regarding printer status is con ve yed by two methods: 1) the prin ter’ s Control Panel lights and 2) feedb ack through the bi-d irectional I/O that displays at the PC. The basic m ethod of determining error me ssages uses patterns of lights on the Control Panel LE D.
Printer Status Messages The following table lists printer LED messages and their meanings and describe s recommen ded actions. For more info rmation on the Fron t Panel layout, refer to “Using the Co ntrol Panel” in Chapter 3, “Installa tion and Configuration.
Occasionally you may add paper , close the printer door, add the toner cartrid ge, and clear a paper jam, only to find that the printer still displays an error message . If this happens, trou bleshoot using T able 7-3 below . Note If the error appear s and persists only after you attempt to print a page, verify that the motor is func tioning.
Service and Error Messages Service erro rs prevent further printer operation until some action is taken. W hen there is a service error, all of the lights will turn on in a steady state. Press and hold the Front Panel Button to see a pattern in the lights.
Heating Element Resistance Check Figure 7-3 LEDs Description Recommended Action Beam Err or . There are a number of causes for thi s error , and some of the causes ma y be transient. (They ma y disappear .) 1. P ower-cycle the printer by unplugging the printer and plugging it bac k in.
LEDs Description Recommended Action Scanner Err or . Caused by a scanner malfunction. 1. P ower-cycle the printer b y unplugging the printer and plugging it bac k in. 2. Ensure condensation caused by moving the printer from a cold to a w ar m environment hasn’t occurred .
Image F ormation T roubleshooting Check the T oner Cartrid ge Image form ation defects are many times the result of tone r cartridge prob lems. If there is any doubt, always replace the toner cartridge befo re troubleshoo ting image defects. Use the following check list to ensure that the toner cartridge is still operable.
Image Defect Examples This section illustrates some imag e defects and their possible causes. Since there are many variables in the printing process, you may encou nter image defects that are not illustrated in the following examples.
V ertica l Lines Sometimes vertically aligned black streaks or smears can appe ar on successive pages. • The toner cartrid ge may be dam aged. Replace it. • The printer may need cleaning. See “Cleaning You r Printer,” in Cha pter 4. • Replace the heatin g element.
Character V oids Character voids are white areas with in the parts of characters that should be solid black. • If you are using transparencies when you expe rience this problem, try another type of transparency. Hew lett-Packard transpar encies are designed to min imize character voids.
Dropouts Dropouts are char acters that are partially printed . • The Pape r Input Bin may have been loaded with too much paper. Mak e sure that no more than 100 sheets of paper are loaded. • A single sheet of paper may be defectiv e. Try reprinting the job.
Blank Page (Oc casional) A page is completely blan k. If you get occasional blank pages: • Make sure you r page length and margins are set correctly for the paper size you use. If you are printing on small med ia and your page is blank, try prin ting on larger media to see wher e the image is printin g.
Dots • Clean the static charge elimin ator. (See Chap ter 4, “Printer Ma intenance.") • There m ay be discontinuities in the high- voltage contact points. Clean the high voltage contac t points on the toner cartridge and transfe r roller. • Replace the transf er roller.
Distorted Image or BD Failure • Make certain the prin ter is not facing the sunlight. • The paper ma y not meet HP’s paper specifications. Select differen t paper. • Clean the Laser/Scann er Assembly by blow ing compressed air in the slot on the bottom of the assemb ly.
T r oubleshooting Checks Engine T est The engin e test print is used to v erify that the print engine is func tioning correctly . The Forma tter PCA is completely byp assed during an engine test, so this test is useful for isolating printer proble ms.
Half-Self T est Fun ctional Check The electrop hotographic proc ess can be subdi vided into the following stages: • Cleaning (rem oving excess toner from drum surface) • Condition ing (placing a u.
Drum Rotation Functional Chec k The pho tosensitive drum , located in the toner cartridg e, must rotate for the print process to work. Th e photosensitive drum receives its drive from the Main Drive assembly . T o verify wh ether the drum is rotating: 1 Open the Prin ter Door .
High-V oltage Power Supply Check The High -V oltage Power Supply PCA provides the necessary voltages for the electrophotog raphic processes. A method for verifying the high- voltage system is given in the table belo w .
Toner Cartridge High Voltage Connection Points (2 of 2) • Charging (1) • Drum Gro und (2) • Developing Ro ller (3) Figure 7-6 7 T roubleshooting Troubleshooting 7-25.
Paper Curl Paper curl is inherent to the laser printin g processes, and occurs when pap er is subjected to heat. Paper curl tends to relax as the paper cools wh ile resting on a flat surface. The specification for maximu m paper curl when the paper is lying flat before print is 5 mm (0.
T r oubleshooting T ools Paper Path Check If paper is not being picked up or is not moving throu gh the paper path, you may want to observe all of the paper motion activities.
Repetitive Image Defect Ruler Repetitive Image Defect Ruler Figure 7-8 7-28 T roubleshootin g.
Main Wiring Diagram Figure 7-9 Main Wiring Diagram 7 T roubleshooting 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 5L only J204 pin 2 .
Connector Signal Name Remarks J209 pin 3 DOSNS “H” when car tridge is not installed or the front door is open at PS204. J305 pin 1 +12A V J305 pin 2 N/U J305 pin 3 +12 V J206 pin 1 FRSTH Fusing te.
7-32 T roubleshootin g.
8 Parts and Diagrams Contents How to Use the Part Lists and Diagrams . . . . . . . . . . . . . . . . . . . . 8-3 Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3 Ordering Con sumables . . . . . . . . . . . . . . . . .
8-2 Parts and Diagrams.
How to Use the Part Lists and Diagrams The Figu res in this chapter illustrate the major subassem blies in the printer and their compon ent parts. A table (material list) follo ws each exploded assembly diagram.
Ordering Con sumables Consumab les and accessories such as those listed on T able 8-1 m ay be ordere d from Hewlett-Packard. The phone num bers are: U.S.: 1-800 -538-878 7 Canada: 1-8 00-387-31 54 (T oronto) 516-671-8383 United Kin gdom: 0734-44 1212 Germany: 013 0-3322 Contact your local HP Parts Coordinato r for other local phon e numbers.
Accessories and Supp lies The following items are av ailable through your local authorized HP dealer . T o find a dealer near you (or if you r dealer is temporarily out of stock), call the HP Custo mer Inform ation Center (800) 752 -0900.
Common Hardware Example Description Scre w , Machine, T r us Head M3x4, M3x6, M3x8 Scre w , Star , 3x6 Scre w , Self-tap , 4x10 Scre w , He x-head, 3x8 Scre w , He xhead, 3x6,m 3x8, 3x10 Table 8-2 Com.
Major Assembly Locations Figure 8-1 8 Par ts a n d Diagrams Parts and Diag rams 8-7.
Covers and Doors Figure 8-2 8-8 Parts and Diagrams.
Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description 1 RB1-7211-000CN RB2-1637-000CN 1 Input Extender 1 2 RB1-7212-000CN RB2-1638-000CN 1 Input Extender 2 3 RB1-7333-000CN RB2-1636-000CN 1 Ba.
Internal Components (1 of 3) Figure 8-3 8-10 Parts and Diag rams.
Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description 1 R Y7-5005-000CN RY7- 5005-000CN 1 Gear Kit #1 2 RB1-7288-000CN RB1-7288-000CN 2 Exit Roller Bushing 3 RB1-7105-000CN RB1-7105-000CN 1 Fu.
Internal Components (2 of 3) Figure 8-4 8-12 Parts and Diag rams.
Ref LaserJet 5LPart No. LaserJet 6LPart No. Qty Description 1 RB1-7109-000CN RB1-7109-000CN 1 Memory Door Guide 2 RB1-7247-000CN RB1-7247-000CN 1 Fuser P aper Gui de 3 RB1-7344-000CN RB1-7344-000CN 1 .
Internal Components (3 of 3) Figure 8-5 8-14 Parts and Diag rams.
Ref LaserJet 5LPart No. LaserJet 6LPart No. Qty Description 1 RB1-7223-000CN RB1-7223-000CN 1 Pic kup Roller Grounding Clip 2 RB1-7246-000CN RB1-7246-000CN 2 Pressure Roller Bushing 3 RB1-7341-000CN R.
DC Controller/Formatter and Cables Figure 8-6 8-16 Parts and Diag rams.
Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description 1 RG5-2024-000CN RB2-1719-000CN 1 F ormatter Shield 2 C3942-67902 C3991-60001 1 F ormatter , New C3942-69002 n/a 1 F ormatter , Exchange 3.
Pickup Roller Assembly Figure 8-7 8-18 Parts and Diag rams.
Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description 1 RB1-7177-000CN RB1-7177-000CN 1 P aper Feed Fra me 2 R Y7-5008-000CN R Y7-5008-000CN 1 Separation P ad Assembly 3 R Y7-5009-000CN RY7- 5.
Feed Assembly Figure 8-8 8-20 Parts and Diag rams.
Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description RG5-1942-000CN RG5-3485-000CN 1 Feed Assemb ly 9 RB1-7226-000CN RB2-1699-000CN 1 Idler Roller Table 8-9 8 Par ts a n d Diagrams Parts and .
Separation Guide Assembly Figure 8-9 8-22 Parts and Diag rams.
Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description RG5-2013-000CN RG5-3475-000CN 1 Separation Guide Assemb ly 2 RB1-7276-000CN RG5-3476-000CN 1 Face-Up/F ace-Do wn Lever 4 RB1-7289-000CN RB.
Delivery Assembly Figure 8-10 8-24 Parts and Diag rams.
Ref LaserJet 5L Part No. LaserJet 6L Part No. Qty Description RG5-2012-000CN RG5-3474-000CN 1 Delivery Assembly 1 RB1-7284-000CN RB1-7284-000CN 4 Delivery Roller #1 2 RB1-7285-000CN RB2-1685-000CN 2 D.
8-26 Parts and Diag rams.
A Parts Index Parts Index A-1.
Parts Index Description Part No. Fig. Ref. A C Cable Cov er RB1-7344-000CN 8-4 3 Bac k Cov er (5L) RB1-7333-000CN 8-2 3 Bac k Cov er (6L) RB2-1636-000CN 8-2 3 Bac k Grounding Clip RB1-7199-000CN 8-7 7.
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-.
Description Part No. Fig. Ref. Fuser Pressure Plate RF5-151 7-000CN 8-5 5 Fuser Release Kit R Y7-5007-000CN 8-3 6 Fuser Release T ab RB1-7105-000CN 8-3 3 Fuser Roller Bushing (5L) RB1-7289-000CN 8-9 4.
Description Part No. Fig. Ref. Left Pressure Roller Housing RB1-7255-000CN 8-5 13 Main Cov er (5L) RG5-1995-000CN 8-2 4 Main Cov er (6L) RG5-3443-000CN 8-2 4 Main Motor (5L) RH7-1282-000CN 8-3 7 Main .
Description Part No. Fig. Ref. Scre w XA9-0724-000CN 8-2 11 Scre w (with star washer) XA9-0855-000CN 8-4 10 Scre w XB1-1300-807CN 8-4 502 Scre w XA9-0267-000CN 8-3 503 Scre w XA9-0824-000CN 8-5 17 Scr.
Part No. Description Fig. Ref. C3941-69001 DC Controller PCA (110V) (Exchange) (5L) 8-6 3 C3941-69002 DC Controller PCA (220V) (Exchange) (5L) 8-6 3 C3941-69003 Laser Scanner (Exch ange) (5L) 8-3 19 C.
Part No. Description Fig. Ref. RB1-7288-000CN Exit Roller Bus hing 8-3 2 RB1-7289-000CN Fuser Roller Bushing (5L) 8-9 4 RB1-7293-000CN Flag 8-5 18 RB1-7294-000CN Flag Spring 8-5 19 RB1-7302-000CN Cap .
Part No. Description Fig. Ref. RF5-1514-000CN EP Left Hand Guid e 8-5 10 RF5-1515-000CN EP Right Hand Guide #1 8-5 9 RF5-1516-000CN Pressure Roller (5L) 8-5 4 RF5-1517-000CN Fuser Pressure Plate 8-5 5.
Part No. Description Fig. Ref. RG5-2031-000CN Door Sensor Cable (5L) 8-6 9 RG5-2032-000CN Therm istor Cable 8-6 10 RG5-2033-000CN Motor Cable 8-6 11 RG5-2034-000CN Scanner Cable (5L) 8-6 12 RG5-2035-0.
Part No. Description Fig. Ref. R Y7-5006-000CN Gear Kit #2 (5L) 8-3 8 R Y7-5007-000CN Fuser Relea se Assemb ly 8-3 6 R Y7-5008-000CN Sep eration P ad Kit 8-7 2 R Y7-5009-000CN Input Sensor As sembly 8.
A-12 Parts Index.
B Regulatory Inf ormation Laser Safety (U .S.A.) The Cente r for Devices and Radiological Health (CD RH) of the U.S. Food and Drug Adm inistration implem ented regulations for laser products manufactured since August 1, 1976 . Compliance is man datory for products mar keted in the United States.
Laser Statement (Finland ) The following applies to printer operation and servicing in Finland. LASER TUR V ALLISU US LUOKAN 1 LASERLAITE KLASS 1 LASER APP ARA T HP LaserJet(s) 4V and 4MV laserkirjoitin on käyttä jän kannalta turvallinen luokan 1 laserlaite.
T oner Safety Note In case of toner spills, skin and clothing are best cleaned by rem oving as much toner as possible with a dry tissue, then washing with cold water .
FCC Statement (Class B) Note: This equipm ent has been tested and foun d to comply with the limits for a Class B digital device, pur suant to part 15 of the FCC rules. These limits are designed to provide reasonable protec tion against harm ful interference in a residential installation.
C Service Notes Fuser Accordian Jams C3941A- 01 SERVICE NOTE SUPE RSEDES: NONE HP C39 41A LaserJet 5L Serial Numbers: <JPBB02 2333 <JPTB000 101 <JPBJ0413 10 <JPBK0061 51 <JPBL033831 <.
T o remov e the paper jam the fuser area of the printer must be disassembled. Fusers and pressure rollers should be checked for damage from the paper jam or the customers attempts to remov e the paper jam.
Fuser Jam Clearing Countermeasure C3941A -02A SERVICE NOTE SUPERSEDE S: C3941A-02 HP C39 41A LaserJet 5L Serial Numbers: JPBK00000 0 / JPBK016388 JPBL0000 00 / JPBL0553 74 JPCW0000 00 / JPCW043448 JPV.
T o remov e this type of paper jam the fuser area of the printer must be disassembled. The fuser and pressure roller sh ould be checked for damage from the paper jam or the customer ’ s attempts to remov e the paper jam. See chapter 6 in the service manual for disassemb ly instructions.
Index A A C power distribution 5-6 circuitry 5-6 accessories and supplies 8-5 acoustic emissions 1-6 assistance, technical 1-12 B background scatter 7-16 black page 7-16 blank page all pages 7-18 occa.
standard 1-3 internal assemblies 8-10, 8-12, 8-14 control panel 6-11 delivery assembly 6-13 exit roller assembly 6-12 face-up/face-down lever 6-21 fuser exit roller 6-22 fuser pressure plate 6-15 heat.
PRNT 5-19 STBY 5-19 WAIT 5-19 printing self test page 3-7 priority of errors 7-7 PRNT , printer timing 5-19 product information 1-1 to 1-16, 3-1 to 3-12 product ov ervie w 1-7 R radio frequency interf.
warning messages 6-3 warranty exclusions 1-14 limitations 1-15 start date 1-15 voltage 1-15 warranty 1-14 wiring diagram 7-29 wiring diagrams, main 7-29 writing process 5-13 Inde x Index-4.
Printed on Recycled P aper *C3990-90991* *C3990-90991* C3990-90991 HP LaserJ et 5L and 6L Printer Ser vice Manual Copyright© 1997 He wlett P ackard Co.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il HP (Hewlett-Packard) 5L è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del HP (Hewlett-Packard) 5L - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso HP (Hewlett-Packard) 5L imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul HP (Hewlett-Packard) 5L ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il HP (Hewlett-Packard) 5L, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del HP (Hewlett-Packard) 5L.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il HP (Hewlett-Packard) 5L. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo HP (Hewlett-Packard) 5L insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
