HP ENWW Service Manual

servicehp LaserJet 2400 series

viii ENWW

Left-side cover1. Remove two screws (callout 1).Figure 6-7. Removing the left-side cover (1 of 2)2. Open the cartridge door.86 Chapter 6 Removal and r

3. Release one tab (callout 2) at the back of the printer by pressing the tab through a holein the chassis, and then rotate the cover away from the pr

Top, right cover1. Remove one screw (callout 1) at the back of the printer.Figure 6-9. Removing the top, right cover2. Lift the cover off of the print

Top cover1. Remove four screws (callout 1).2. Lift the cover at the back of the printer, and then slide the cover toward the front of theprinter to cl

Front, right cover1. Remove two screws (callout 1).Figure 6-11. Removing the front, right cover (1 of 2)90 Chapter 6 Removal and replacement ENWW

2. Release one tab (callout 2) at the back of the cover, and then rotate the cover to cleartwo tabs (callout 3) at the front of the printer.32Figure 6

Control panel1. Remove all of the covers (see Covers).2. Disconnect one cable (callout 1).3. Remove two screws (callout 2).Figure 6-13. Removing the c

Reinstallation tipTo make sure that the control panel is reinstalled correctly, use the locator pin (callout 1) andplace the sheet metal front of the

Formatter1. Remove the right-side cover (see Right-side cover).2. Open the formatter cover, and then lift the cover off of the hinges (callout 1) at t

4. Remove two screws (callout 3).Figure 6-16. Removing the formatter (2 of 4)ENWW Formatter 95

List of tablesTable 1-1. Feature designations for HP LaserJet 2400 Series printers...2Table 1-2. Speed ...

5. Rotate the formatter slightly at the back of the printer, and then slide the formattertoward the back of the printer to clear two tabs (callout 4)

6. Remove five screws (callout 5), and then lift the formatter off of the formatter plate.Figure 6-18. Removing the formatter (4 of 4)ENWW Formatter 9

Fuser1. Remove the back cover (see Back cover) and the I/O cover (see I/O cover).2. Remove the fuser-cable cover by releasing one tab (callout 1) on t

3. Remove the duplexer inlet guide by releasing two tabs (callout 2) on the guide, and thensliding the guide toward the back of the printer.Figure 6-2

5. Disconnect the fuser cable at the right side of the printer (callout 4).Figure 6-21.Removing the fuser (3 of 5)100 Chapter 6 Removal and replacemen

6. Remove four screws (callout 5).Figure 6-22. Removing the fuser (4 of 5)ENWW Fuser 101

7. Tilt the fuser slightly toward the back of the printer, and then slide the fuser out of theback of the printer.Figure 6-23. Removing the fuser (5 o

Laser/scanner1. Remove the back cover (see Back cover), the I/O cover (see I/O cover), the left-sidecover (see Left-side cover), the top, right cover

4. Remove four screws (callout 3).Figure 6-25. Removing the laser/scanner (2 of 3)5. Lift the laser/scanner out of the printer.104 Chapter 6 Removal a

6. To remove the laser/scanner PCA, remove two screws (callout 4), and then lift the PCAoff of the laser/scanner.Figure 6-26. Removing the laser/scann

x ENWW

Right-side handle1. Remove the right-side cover (see Right-side cover).2. Remove the formatter (see Formatter).3. Remove two screws (callout 1).Figure

4. Slide the handle toward the back of the printer until the power-switch (callout 2) isadjacent to the hole in the printer chassis.Figure 6-28. Remov

ECU1. Remove all of the covers (see Covers).2. Remove the control panel (see Control panel).3. Remove the formatter (see Formatter).4. Remove the righ

8. Lift the cartridge-door switch (callout 3) from its mounting.Figure 6-30. Removing the ECU (2 of 6)9. Disconnect the laser/scanner cable (callout 4

10. Remove four screws (callout 5): two screws on the top and two screws on the side, atthe bottom, of the ECU pan.Figure 6-31. Removing the ECU (3 of

11. Remove three screws (callout 6) from the back of the ECU pan.Figure 6-32. Removing the ECU (4 of 6)ENWW ECU 111

12. Rotate the top of the ECU pan away from the printer, and then disconnect one flat,flexible cable (callout 7).Figure 6-33. Removing the ECU (5 of 6

13. Lay the ECU pan down on the work surface, and then disconnect three cables (callout 8).Figure 6-34. Removing the ECU (6 of 6)NOTEThe ECU and the E

Access plate1. Remove the back cover (see Back cover), the I/O cover (see I/O cover), and theduplexer inlet guide (see Figure 6-20. Removing the fuser

Power supply1. Remove all of the covers (see Covers).2. Remove the control panel (see Control panel).3. Remove the formatter (see Formatter).4. Remove

List of figuresFigure 1-1. HP LaserJet 2400 Series printer base model, front/right-side view...2Figure 1-2. HP LaserJet 2400 Series pri

9. Remove the two screws (callout 2) that secure the spacer to the printer, and then lift thespacer out of the printer.Figure 6-37. Removing the power

11. Remove five screws (callout 3) from the power-supply pan.Figure 6-38. Removing the power supply (3 of 5)12. At the left side of the printer, disco

13. Remove two screws (callout 5).Figure 6-39. Removing the power supply (4 of 5)118 Chapter 6 Removal and replacement ENWW

14. Lift the power-supply pan, and then disconnect one cable (callout 6).Figure 6-40. Removing the power supply (5 of 5)NOTEThe power supply and the p

Gear assembly1. Remove all of the covers (see Covers).2. Remove the control panel (see Control panel).3. Remove the formatter (see Formatter).4. Remov

8. Remove the two screws (callout 2) that secure the air duct to the printer chassis.Figure 6-42.Removing the gear assembly (2 of 6)9. Unwind the cabl

10. Remove four screws (callout 3) from the gear-assembly plate.34Figure 6-43. Removing the gear assembly (3 of 6)11. Pull the gear assembly straight

Reinstallation tipUse the rod (callout 2 in Figure 6-44. Reinstalling the gear assembly) on the gear-assemblyplate as a locator to find the correct po

Tray 1 solenoid1. Remove all of the covers (see Covers).2. Remove the control panel (see Control panel).3. Remove the formatter (see Formatter).4. Rem

Tray 2 solenoid1. Remove all of the covers (see Covers).2. Remove the control panel (see Control panel).3. Remove the formatter (see Formatter).4. Rem

Figure 6-28. Removing the right-side handle (2 of 2)...107Figure 6-29. Removing the ECU (1 of 6)

E-label reader (memory tag)1. Remove the right-side cover (see Right-side cover), the back cover (see Back cover),the I/O cover (see I/O cover), the l

3. Remove one screw (callout 2).Figure 6-48. Removing the e-label reader (2 of 2)4. Lift the e-label reader out of the printer.ENWW E-label reader (me

Face-down-roller shaft1. Remove the right-side cover (see Right-side cover), the back cover (see Back cover),the I/O cover (see I/O cover), the left-s

3. Lift the end at the right side of the printer, and then slide the shaft toward the right sideto clear the hole on the left side of the printer chas

Cartridge door1. Remove the back cover (see Back cover), the I/O cover and the left-side cover (see Left-side cover).2. With the cartridge door closed

4. Open the cartridge door, and then use a flatblade screwdriver to release the cartridge-door arm (callout 2) at the right side of the cartridge door

5. Slide the cartridge door to the left, off of the hinges (callout 3).Figure 6-53. Removing the cartridge door (3 of 3)132 Chapter 6 Removal and repl

Transfer roller1. Release the left end of the transfer roller by using needle-nose pliers to pinch two tabs atthe left end of the transfer roller.Figu

Registration assembly1. Remove the back cover (see Back cover), the I/O cover and the left-side cover (see Left-side cover).2. Pinch the tab on the re

3. Remove two screws (callout 2) from the registration-assembly cover, and then lift thecover out of the printer.Figure 6-56. Removing the registratio

1Product InformationChapter contentsChapter contents...

4. Remove four screws (callout 3).Figure 6-57. Removing the registration assembly (3 of 3)5. Lift the registration assembly out of the printer.136 Cha

Tray 1 pickup roller1. Spread the pickup-roller locks (callout 1) on each side of the tray 1 pickup roller torelease the roller.Figure 6-58. Removing

Tray 2 pickup rollerNOTEAlso follow these instructions to remove any optional-tray pickup rollers.1. Rotate the bushings (callout 1) on each side of t

4. Slide the roller and shaft toward the right and lift the roller and shaft together out of theprinter.Figure 6-60. Removing the tray 2 pickup roller

Separation padNOTETo replace a separation pad, replace the entire separation-pad assembly.1. Pull the tray out of the printer.2. Remove two screws (ca

7TroubleshootingChapter contentsChapter contents...

Correcting print-quality problems ...201Print-quality checklist

Troubleshooting treeFigure 7-1. Basic troubleshooting is a graphical representation of the troubleshooting process.Figure 7-1.Basic troubleshootingENW

Troubleshooting flowchartIf the printer is not responding correctly, use the flowchart to determine the problem. If theprinter does not pass a step, f

2. Can you print a configuration page? (See Configuration page.)YES Go to step 3.NO A configurationpage does notprint.● Verify that all trays are co

Printer configurationsThe HP LaserJet 2400 Series printer is available in several configurations. The letters thatfollow the printer name indicate the

3. Can you print from a program?YES Go to step 4.NO The job will notprint. ● If the job will not print, and a message appears on the control-pane

4. Does the job print as expected?YES Go to step 5.NO Print is garbled,or only a portionof the pageprints. ● Make sure that you are using the correct

5. Does the printer select the correct trays?YES For other problems, check the Contents, the Index, or the printer-driveronline Help.NOThe printer pu

Troubleshooting toolsPress the SELECT ( ) button to open the menus. Use the UP ARROW ( ) button or the DOWNARROW ( ) button to scroll through the menu

5.Press the SELECT ( ) button to select and print the selected information page.The informational pages for the printer are also available in the embe

Menu mapUse the menu map to help navigate through the printer submenus and select configurationsettings. Printing a menu map is very helpful when you

Configuration pageUse the configuration page to view current printer settings, to help troubleshoot printerproblems, or to verify the installation of

Supplies status pageUse the supplies status page to obtain information about the print cartridge that is installed inthe printer, the amount of life l

Embedded Web serverWhen the printer is directly connected to a computer, the embedded Web server issupported for Windows 95 and later. In order to use

● Supplies Status. Shows the life that remains in HP supplies (0% represents that asupply is empty). This page also provides supplies part numbers. To

8910Figure 1-2.HP LaserJet 2400 Series printer base model, right-side/rear view8 On/off switch9 Interface ports10 Rear output binENWW Printer configur

Other linksThis section of the embedded Web server contains links that connect you to the Internet.You must have Internet access in order to use any o

To select status messages1. Open Printer Status and Alerts in one of these ways:● Double-click the Printer Status and Alerts tray icon, which is near

Control-panel menusUse the control-panel menus to control various printer functions. For example, you can usethe RESETS submenu to reset and restore m

Resets submenuTo find the RESETS submenu, use the control panel to open the CONFIGURE DEVICEmenu. Items on the Resets submenu are used to return setti

Table 7-2. Diagnostics menuItem Values ExplanationPRINT EVENT LOG No values availablePress the SELECT ( ) button to generate a list ofthe 50 most rece

Service menu (service PIN codes)Authorized HP service technicians can use this menu to gain access to printer settings thatare reserved for service pe

Restoring the Service IDIf you replace the formatter, the date is lost. Use this menu item to reset the value to the datethat the printer was first us

Printer resets and power-on modesThe following sections describe the types of printer resets and power-on modes.Cold reset A cold reset unlocks menus

NVRAM initialization CAUTIONInitializing the NVRAM resets the serial number, the event log, the page counts, and theEIO card (initializing the NVRAM r

Power-on bypassWhen the power is turned on the printer begins the power-on sequence. By performing apower-on bypass, you can cause the printer to resu

FeaturesThe following tables describe the features of HP LaserJet 2400 Series printers.Table 1-2. SpeedHP LaserJet 2410 printer HP LaserJet 2420 Serie

Test pagesPrinting test pages helps you determine whether or not the printer engine and the formatterare functioning.Engine-test page To verify that t

Interface troubleshootingThe following sections provide instructions for interface troubleshooting.Communications checksNOTECommunication problems are

Jetdirect page51234Figure 7-5. Jetdirect page1 HP Jetdirect Configuration If the EIO Jetdirect card is installed correctly and the printercompletes it

Solving general printing problemsIn addition to the issues and solutions that are listed in this section, see Troubleshootingcommon Macintosh problems

Print job is extremely slow.CauseSolutionThe job might be very complex.The maximum speed of the printer cannot beexceeded even when more memory is add

The printer prints, but the text is wrong, garbled, or incomplete.CauseSolutionThe printer cable is loose or defective. Disconnect the printer cable a

The printer does not respond when you select Print in the software. CauseSolutionThe printer is malfunctioning. Check the control-panel display for me

Clearing jamsOccasionally, media can become jammed during a print job. The following are some of thecauses:● Trays are loaded incorrectly or overfille

Cause SolutionThe print media is not pickedup by the internal rollers fromtray 2, tray 3, or tray 4.Remove the top sheet of media. If the media is hea

Clearing jams in the print-cartridge areaJams in this area might result in loose toner on the page. If you get any toner on yourclothes or hands, wash

Table 1-5. Memory and processorHP LaserJet 2410 printer HP LaserJet 2420 SeriesprinterHP LaserJet 2430 SeriesprinterIncludes 32 MB of RAM.Expandable u

NOTEIf the print cartridge is difficult to reinstall, make sure that the registration plate has beenflipped back down into position and that you have

4. For tray 2, push the stack down to lock the metal paper-lift plate into place. For bothtrays, slide the tray into the printer.5.To reset the printe

3. If the media is almost completely visible from the top output bin, pull the remainingmedia carefully out of the printer. If the leading edge is not

Clearing jams in the duplexer areaThis procedure applies only to printers that include a duplexer.1. Remove tray 2 from the printer.2. Push the green

5. Reinstall tray 2.NOTEIf the Attention light does not go out, jammed media remains inside the printer. Check thepaper-feed and rear-output areas for

Media handling problemsIf media is feeding incorrectly, use the information in this section to identify and resolve theproblem.Multiple pages feed Tab

Pages are wrinkled or foldedTable 7-5. Causes for wrinkled or folded paper at the paper-path entranceCause SolutionThe feed rollers or registration ro

Understanding printer messagesPrinter messages that appear on the control-panel display relay the normal status of theprinter (such as Processing...)

Control panel message Eventlog errormessageDescription Recommended action10.XX.YY SUPPLY MEMORY ERRORalternates withFor help press An error has occurr

Control panel message Eventlog errormessageDescription Recommended action50.X FUSER ERROR For help press A fuser error has occurred.X Description1 l

Table 1-8. Print cartridgeHP LaserJet 2410 printer HP LaserJet 2420 SeriesprinterHP LaserJet 2430 SeriesprinterThe standard print cartridgeprints up t

Control panel message Eventlog errormessageDescription Recommended action22 EIO X BUFFER OVERFLOWalternates withTo continue press Too much data was se

Control panel message Eventlog errormessageDescription Recommended action49.XXXXX ERRORalternates withTo continueturn off then onA critical firmware e

Control panel message Eventlog errormessageDescription Recommended action49.XXXXX ERRORalternates withTo continueturn off then onA critical firmware e

Control panel message Eventlog errormessageDescription Recommended action52.XY ERRORFor help press alternates withTo continueturn off then onA tempora

Control panel message Eventlog errormessageDescription Recommended action56.XX ERRORFor help press alternates withTo continueturn off then onA tempora

Control panel message Eventlog errormessageDescription Recommended action59.XY ERRORFor help press alternates withTo continueturn off then onA printer

Control panel message Eventlog errormessageDescription Recommended action68.X PERMANENTSTORAGE FULLalternates withTo continue press The printer perman

Control panel message Eventlog errormessageDescription Recommended action68.X STORAGE ERROR SETTINGS CHANGEDalternates withTo continue press An error

Control panel message Eventlog errormessageDescription Recommended action79.XXXX ERRORalternates withTo continueturn off then onThe printer detected a

Control panel message Eventlog errormessageDescription Recommended actionCARD SLOT X FILESYSTEM IS FULLalternates with<Current status message>Th

Table 1-11. AccessibilityHP LaserJet 2410 printer HP LaserJet 2420 SeriesprinterHP LaserJet 2430 SeriesprinterThe online user guide iscompatible with

Control panel message Eventlog errormessageDescription Recommended actionINSTALL CARTRIDGEFor help press The print cartridge is missing andmust be rei

Control panel message Eventlog errormessageDescription Recommended actionMANUALLY FEED[TYPE][SIZE]To continue press alternates withMANUALLY FEED[TYPE]

Control panel message Eventlog errormessageDescription Recommended actionPausedalternates withTo return to readypress STOPThe printer is paused butcon

Control panel message Eventlog errormessageDescription Recommended actionRAM DISK NOTINITIALIZEDalternates with<Current status message>The file

Control panel message Eventlog errormessageDescription Recommended actionUNSUPPORTED DATA ON [FS] DIMM IN SLOT Xalternates withTo clear press The data

Correcting print-quality problemsThis section helps you define print-quality problems and what to do to correct them. Oftenprint- quality problems can

See Light print(partial page)See Light print(entire page)See Specks See Specks See DropoutsSee Dropouts See DropoutsAAAAABBBBBCCCCCaaaaacccccbbbbbSee

Light print (partial page) 1. Make sure that the print cartridge is fully installed.2. The toner level in the print cartridge might be low. Replace th

SpecksSpecks might appear on a page after a jam has been cleared.1. Print a few more pages to see if the problem corrects itself.2. Clean the inside o

Lines AAAAABBBBBCCCCCaaaaacccccbbbbb1. Print a few more pages to see if the problem corrects itself.2. Clean the inside of the printer and run a clean

SpecificationsPhysical specificationsTable 1-12. Product dimensionsProduct Height Depth WidthWeight1HP LaserJet 2410, 2420,2420d, 2420n, and 2420dn260

Toner smear 1. Print a few more pages to see if the problem corrects itself.2. Try using a different type of media.3. Make sure that the environmental

Repeating defects 1. Print a few more pages to see if the problem corrects itself.2. Clean the inside of the printer and run a cleaning page to clean

Misformed charactersAaBbCcAaBbCcAaBbCcAaBbCcAaBbCcAaBbCc1. Print a few more pages to see if the problem corrects itself.2. Make sure that the environm

Curl or wave1. Turn over the stack of media in the tray. Also, try rotating the stack 180°.2. Make sure that the type and quality of the media that yo

Vertical white lines 1. Print a few more pages to see if the problem corrects itself.2. Make sure that the type and quality of the media that you are

White spots on black1. Print a few more pages to see if the problem corrects itself.2. Make sure that the type and quality of the media that you are u

Blurred print1. Make sure that the type and quality of the media that you are using meetHP specifications. (See Media specifications.)2. Make sure tha

Troubleshooting common Windows problems Error message:"Error Writing to LPTx" in Windows 9x.CauseSolutionMedia is not loaded. Make sure that

Troubleshooting common Macintosh problemsIn addition to the problems that are listed in Solving general printing problems, this sectionlists problems

A print job was not sent to the printer that you wanted.CauseSolutionThe wrong printer name or IP address is being used.Another printer that has the s

Electrical specificationsWARNING!Power requirements are based on the country/region where the printer is sold. Do notconvert operating voltages. This

When connected with a USB cable, the printer does not appear in the Desktop Printer Utility or the Apple SystemProfiler after the driver is selected.C

The printer name, IP address, or Rendezvous host name does not appear in the printer list box in the print center.CauseSolutionThe printer might not b

A print job was not sent to the printer that you wanted.CauseSolutionThe wrong printer name or IP address is being used.Another printer with the same

When connected with a USB cable, the printer does not appear in the Macintosh Print Center after the driver isselected.CauseSolutionThis problem is ca

Troubleshooting common PostScript problemsThe following situations are specific to the PostScript (PS) language and might occur whenseveral printer la

VM ErrorCauseSolutionA font error occurred. Select unlimited downloadable fonts from theprinter driver.Range CheckCauseSolutionA font error occurred.

Printer component locationsDiagrams are provided below detailing the locations of various printer components.Main assembliesFigure 7-6. Main assemblie

Main partsFigure 7-7. Main parts, HP LaserJet 2400 series1 Fixing film2 Pressure roller3 Transfer charging roller4 Tray 1 pick-up roller5 Tray 1 separ

Sensors and switchesFigure 7-8.Sensors and switches, HP LaserJet 2400 series1 Delivery sensor2 Face-up cover sensor3 Power switch4 Door switch5 Test p

Motors, fans, and solenoidsFigure 7-9. Motors, fans, and solenoids, HP LaserJet 2400 series1 Fuser motor2 Main motor3 Tray 1 pickup solenoid4 Main fan

Acoustic emissionsTable 1-16. Sound power and pressure level1 (HP LaserJet 2400 series)Sound power level Declared per ISO 9296Printing2 (HP LaserJet 2

PCAsFigure 7-10. PCAs, HP LaserJet 2400 series1 Engine controller PCB2 High-voltage power supply PCB226 Chapter 7 Troubleshooting ENWW

500-Sheet paper feederFigure 7-11. 500-Sheet paper feeder, HP LaserJet 2400 series1 Left cover2 Rear cover3 Upper right cover4 Lower right cover5 Fron

Wiring diagramsThe following figures show HP LaserJet 2400 Series printer wiring and circuitry layout.Figure 7-12. Circuit diagram (1 of 2)228 Chapter

Figure 7-13. Circuit diagram (2 of 2)ENWW Wiring diagrams 229

38456291710Figure 7-14. ECU wiring1 FM1, main fan motor (J509)2 Tray 1 pickup solenoid (J508)3 Tray 1 sensor (J503)4 Laser/scanner motor (J402)5 Memor

General timing diagrams1234567891011121314151617181920STBYWAITSTBYINTRPRINTLSTRPrint CommandMain Motor (M1)Fuser Heater (H1)Fuser Motor (M2)Scanner Mo

232 Chapter 7 Troubleshooting ENWW

8Parts and diagramsChapter contentsChapter contents...

Ordering parts and suppliesPartsOrder replacement parts from the following Web sites:h30074.www3.hp.com/csn-aux/srvcdlvry/epdo/default/ePDOLogin.asp (

AccessoriesThe following accessories and supplies are available for the HP LaserJet 2400 series.Product name Description Product number Part numberPap

Media specificationsThe printer accepts a variety of media, such as cut-sheet paper, including up to 100%recycled fiber content paper; envelopes; labe

Product name Description Product number Part numberCables and interfacesEnhanced I/O (EIO)cards. HP Jetdirectprint servermultiprotocol EIOnetwork card

ENWW Accessories 237

CoversFigure 8-1. Covers238 Chapter 8 Parts and diagrams ENWW

Table 8-2. CoversRef Description Part number Qty1 Screw, tapping, M3x6 XA9-1503-000CN 102 Cover, right upper RC1-4159-000CN 13 Screw, tapping, truss h

Internal componentsFigure 8-2. Internal components (1 of 4)240 Chapter 8 Parts and diagrams ENWW

Table 8-3. Internal components (1 of 4)Ref Description Part number Qty1 Screw, S, M3x8 XA9-1500-000CN 302 Cable assembly RM1-1421-000CN 13 Laser/scann

Ref Description Part number Qty33 Fan, sub RK2-0573-000CN 134 Holder, sub fan RC1-4134-000CN 135 Clip clamp, wire WT2-5694-000CN 136 Holder RC1-4009-0

ENWW Internal components 243

Figure 8-3. Internal components (2 of 4)244 Chapter 8 Parts and diagrams ENWW

Table 8-4. Internal components (2 of 4)Ref Description Part number Qty1 Cable assembly RM1-1425-000CN 12 Link, switch RC1-4170-000CN 13 Holder, switch

Tray 2 (250-sheet tray)and tray 3 (500-sheettray)Dimensions1WeightCapacity2Letter 216 x 279 mm(8.5 x 11 inches)60 to 120 g/m2(16 to 32 lb)250 sheets

Ref Description Part number Qty32 Fuser, 220-240 V RM1-1531-000CN 133 Gear assembly RM1-1412-000CN 134 Tray 2 pickup assembly RM1-1481-000CN 1Table 8-

ENWW Internal components 247

Figure 8-4. Internal components (3 of 4)248 Chapter 8 Parts and diagrams ENWW

Table 8-5. Internal components (3 of 4)Ref Description Part number Qty1 Fixing drive side plate assembly RM1-1500-000CN 12 Screw, S, M3x8 XA9-1500-000

Figure 8-5. Internal components (4 of 4)250 Chapter 8 Parts and diagrams ENWW

Table 8-6. Internal components (4 of 4)Ref Description Part number Qty1 Cover, registration RC1-3936-000CN 12 Sheet, static charge RC1-4070-000CN 13 G

Ref Description Part number Qty32 Registration assembly RM1-1502-000CN 1Table 8-6. Internal components (4 of 4) (continued)252 Chapter 8 Parts and dia

ENWW Internal components 253

Tray 2 pickup assemblyFigure 8-6. Tray 2 pickup assembly254 Chapter 8 Parts and diagrams ENWW

Table 8-7. Tray 2 pickup assemblyRef Description Part number QtyTray 2 pickup assembly RM1-1481-000CN 17 Tray 2 pickup roller RL1-0542-000CN 1ENWW Tra

Category SpecificationsAcid content 5.5 pH to 8.0 pHCaliper 0.094 to 0.18 mm (3.0 to 7.0 mils)Curl in ream Flat within 5 mm (0.02 inch)Cut edge condit

Alphabetical parts listTable 8-8. Alphabetical parts listDescription Part number Table and pageArm, door RC1-4055-000CN Table 8-3 on page 241Arm, pad

Description Part number Table and pageCover, right rear RC1-4156-000CN Table 8-2 on page 239Cover, right upper RC1-4159-000CN Table 8-2 on page 239Dri

Description Part number Table and pageGuide, cartridge, right lower RC1-4107-000CN Table 8-6 on page 251Guide, cartridge, right upper RC1-4106-000CN T

Description Part number Table and pageLink, switch RC1-4170-000CN Table 8-4 on page 245Microswitch RK2-0534-000CN Table 8-4 on page 245Motor, dc, 26.2

Description Part number Table and pageScrew, w/washer, M3x6 XB2-7300-605CN Table 8-3 on page 241Screw, w/washer, M3x6 XB2-7300-605CN Table 8-4 on page

Description Part number Table and pageTray 1 pick-up shaft assembly RM1-1484-000CN Table 8-6 on page 251Tray 2 pickup assembly RM1-1481-000CN Table 8-

Numerical parts listTable 8-9. Numerical parts listPart number Description Table and pageQ3953-60001 Formatter, non-network versions Table 8-3 on page

Part number Description Table and pageRC1-4055-000CN Arm, door Table 8-3 on page 241RC1-4056-000CN Guide, door arm Table 8-3 on page 241RC1-4057-000CN

Part number Description Table and pageRC1-4132-000CN Lever, test switch Table 8-4 on page 245RC1-4133-000CN Holder, main fan Table 8-4 on page 245RC1-

Part number Description Table and pageRM1-1416-000CN Registration sensor pcb assembly Table 8-6 on page 251RM1-1421-000CN Cable assembly Table 8-3 on

EnvelopesEnvelope construction is critical. Envelope fold lines can vary considerably, not only betweenmanufacturers, but also within a box from the s

Part number Description Table and pageRU5-0379-000CN Gear, 19t Table 8-5 on page 249RU5-0389-000CN Gear, 201t Table 8-5 on page 249RU5-0400-000CN Gear

Part number Description Table and pageXB4-7401-005CN Screw, tapping, truss head, M4x10 Table 8-2 on page 239XB4-7401-005CN Screw,tapping,truss head,m4

268 Chapter 8 Parts and diagrams ENWW

IndexSymbols/Numerics1,500-sheet traytroubleshooting 148250-sheet tray. See tray 2500-sheet traydiagrams 227locking 37paper specifications 11printing

error messages 183information pages 149language, selecting 34, 144lights 33menu map, printing 34, 48, 151menus 149, 158online Help 183print cartridge

Explorer, versions supportedembedded Web server 40HP Toolbox 44HP Web Jetadmin 43Fface-down-roller shaft, removing 128fans, diagrams 225FastRes 4featu

jobsformatted incorrectly 147not printing, troubleshooting 146stopped, troubleshooting 147Kkeys, control panel 32Korean EMI statement 20Llabels, speci

networksformatter, replacing 165HP Jetdirect configuration page 152HP Jetdirect page 168HP Jetdirect print servers, models including 5troubleshooting

primary charging stage 72print cartridge door, removing 130print cartridgescleaning near 58error messages 197, 199features 6life expectancy 54low tone

specificationsaccessibility 7acoustic emissions 10electrical 9energy use 6envelopes 14environmental 24labels 15media 11memory 5operating environment 1

Envelope marginsThe following gives typical address margins for a commercial #10 or DL envelope.Type of address Top margin Left marginReturn address 1

sensors 69, 224solenoid, diagrams 225solenoid, removing 124troubleshooting 148See also traystray 2locating 2locking 37paper specifications 11part numb

VVM error 221voltage specifications 9Wwarrantyprint cartridge 17product 16service ID 161washing off toner 175wavy paper, troubleshooting 169, 209Web b

278 Index ENWW

© 2004 Hewlett-Packard Development Company, L.P.www.hp.com/support/lj2410www.hp.com/support/lj2420www.hp.com/support/lj2430Q5956-90932*Q5956-90932**Q5

HP LaserJet 2400 Series printerService Manual

Hewlett-Packard limited warranty statementHP PRODUCTHP LaserJet 2410, 2420, and 2430 seriesDURATION OF LIMITED WARRANTY1 year, Return to Authorized Se

Print Cartridge Limited Warranty StatementThis HP Print Cartridge is warranted to be free from defects in materials and workmanship.This warranty does

HP LaserJet printing suppliesIn many countries/regions, this product's printing supplies (for example, print cartridge andfuser) can be returned

Declaration of conformityDeclaration of Conformityaccording to ISO/IEC Guide 22 and EN 45014Manufacturer's Name: Hewlett-Packard CompanyManufactu

Country-/region-specific safety statementsLaser safety statementThe Center for Devices and Radiological Health (CDRH) of the U.S. Food and DrugAdminis

Finnish laser statementLASERTURVALLISUUSLUOKAN 1 LASERLAITEKLASS 1 LASER APPARATHP LaserJet 2410, 2420, and 2430 series -laserkirjoitin on käyttäjän k

22 Chapter 1 Product Information ENWW

2InstallationChapter contentsChapter contents...

Operating environment Place the printer on a sturdy, level surface in a well-ventilated area that meets the followingenvironmental requirements:● T

SoftwareThe printer comes with helpful software, including printer drivers and optional software. Foreasy printer setup and access to the full range o

Copyright information© 2004 Copyright Hewlett-PackardDevelopment Company, L.P.Reproduction, adaptation, or translationwithout prior written permission

Printer driversPrinter drivers provide access to the printer features and allow the computer to communicatewith the printer (by using a printer langua

Software for Macintosh computersThe HP installer provides PostScript Printer Description (PPD) files, Printer DialogExtensions (PDEs), and the HP Lase

28 Chapter 2 Installation ENWW

3OperationChapter contentsChapter contents...

Print-cartridge authentication ...53Print-cartridge storage .

Control panelThis section provides information about the control panel and its features.The control panel is located on the top of the printer.?MenuSt

Control-panel buttonsButton Function (HELP)●Provides information about the message on the graphical display. (BACK)● Backs up one level in the menu

Control-panel lightsLight State IndicationReadyOn The printer is online and readyto accept data to print.Off The printer cannot accept databecause it

Control-panel languageIf LANGUAGE appears in English on the control panel, use the following procedure.Otherwise, turn the printer off, and then turn

Selecting which tray is used for printing You can select how the printer pulls media from the trays. The following sections provideinformation about c

Table of contents1 Product InformationChapter contents...

Customizing tray 1 operationThe printer can be set to print from tray 1 if it is loaded, or to print only from tray 1 if the typeof media that is load

Printing by type and size of media (locking trays)Printing by type and size is a way to be sure that print jobs always print on the media thatyou want

Feeding media from tray 1 manuallyThe manual feed feature is another way of printing on special media from tray 1. SettingMANUAL FEED to ON either in

Selecting the correct fuser modeThe printer automatically adjusts the fuser mode based on the media type to which the trayis set. For example, heavy p

Using the embedded Web serverUse the embedded Web server (EWS) to view printer and network status and to manageprinting functions from your computer i

Information tabThe Information pages group consists of the following pages.● Device Status. This page shows the printer status and shows the life rema

Networking tabThe network administrator can use this tab to control network-related settings for the printerwhen it is connected to an IP-based networ

Using HP Web Jetadmin softwareHP Web Jetadmin is a Web-based software solution for remotely installing, monitoring, andtroubleshooting network-connect

Using the HP ToolboxHP Toolbox is a Web application that you can use for the following tasks:● Check the printer status.● Configure the printer settin

To view the HP Toolbox1.Open the HP Toolbox in one of these ways:● On the Windows desktop, double-click the HP Toolbox icon.● From the Windows Start m

Control-panel layout...31Control-panel buttons.

Troubleshooting tabThe Troubleshooting tab has links to the following main pages:● Print Quality Tools. View general troubleshooting information, view

Documentation tabThe Documentation tab contains links to these information sources:● Install Notes. Provides specific installation instructions and in

Uninstalling the HP ToolboxThis section explains how to uninstall the HP Toolbox. To uninstall the HP Toolbox by using the Windows desktopshortcut1. F

Configuration pageUse the configuration page to view current printer settings, to help troubleshoot printerproblems, or to verify installation of opti

2 Installed Personalities and Options Lists all printer languages that areinstalled (such as PS and PCL) and listsoptions that are installed in each D

Supplies status pageUse the supplies status page to obtain information about the print cartridge that is installed inthe printer, the remaining print-

PS or PCL font listUse the font lists to see which fonts are currently installed in the printer. The font lists alsoshow which fonts are resident on a

Managing the print cartridgeThis section provides information about HP print cartridges, their life expectancies, how tostore them, and how to identif

Print-cartridge life expectancyThe life of the print cartridge depends on the amount of toner that print jobs require and thelength of life for the co

Cartridge-low and cartridge-out conditionsThe printer alerts you if the print cartridge is low on toner or out of toner.When the cartridge is low on t

Internal components...63Timing...

56 Chapter 3 Operation ENWW

4MaintenanceChapter contentsChapter contents...

Cleaning the printerOver time, particles of toner and paper accumulate inside the printer. This can cause print-quality problems during printing. Clea

4. With a dry, lint-free cloth, wipe any residue from the paper path area and the printcartridge cavity.5. Reinstall the print cartridge and close the

Cleaning the fuserRun the printer cleaning page to keep the fuser free of toner and paper particles that cansometimes accumulate. Accumulation of tone

5Theory of operationChapter contentsChapter contents...

IntroductionThis chapter presents an overview of the relationships among major components in theprinter, and includes a detailed discussion of the ima

Internal componentsFigure 5-2. Cross-section of printer highlights the major internal components.Figure 5-2.Cross-section of printer1 Top output-bin d

TimingSequence of operationThe microprocessor on the dc controller controls the printer operation sequences. Table 5-1.Operation sequences describes e

Step Action9 High-voltage controlDetection of the presence of a print cartridgeCleaning of the transfer roller after the primary charging ac bias is t

Troubleshooting tree...143Troubleshooting f

Engine control systemThe engine control system coordinates all printer functions, according to commands that theformatter sends. It drives the laser/s

Figure 5-4. Engine control system circuit diagramENWW Engine control system 67

Laser/scanner systemThe laser/scanner system receives video signals from the dc controller and the formatter andconverts the signals into latent image

Pickup/feed/delivery systemThe pickup/feed/delivery system consists of several types of feed rollers and sensors. Thedc controller uses two motors and

● SR1, top output-bin delivery flag● SR2, fuser-delivery flagFigure 5-6.Pickup/feed/delivery system70 Chapter 5 Theory of operation ENWW

Image-formation systemLaser printing requires the interaction of several different technologies, including electronics,optics, and electrophotographic

Step 1: Primary chargingDc and ac biases are applied to the primary charging roller, which transfers a uniformnegative potential to the photosensitive

Step 3: DevelopingThe developing cylinder comes in contact with the photosensitive drum to deposit toner ontothe electrostatic latent image.NOTEThe ch

Step 5: SeparationThe elasticity of the print media causes its separation from the photosensitive drum. A staticcharge eliminator aids separation by w

Step 7: Drum cleaningThe cleaning blade scrapes the residual toner off of the photosensitive drum and deposits itinto the waste toner case.Figure 5-14

Wrinkles or creases ...209Vertical white lines ..

Print cartridge memory systemThe memory tag is a nonvolatile memory built into the print cartridge. The cartridge usagecondition is detected as the en

6Removal and replacementChapter contentsChapter contents...

IntroductionThis chapter documents removal and replacement of field replaceable units (FRUs) only.Removal and replacement strategy Replace parts in th

Before performing serviceFollow the pre-service procedures before you perform service.Pre-service procedures1. Remove all media from the product.2. Pl

Parts removal orderUse the following diagram to determine which parts must be removed before removing otherparts.Transfer rollerPrint cartridgeTray 2T

CoversNot all covers have to be removed to get to various FRUs. See Parts removal order if youare unsure about which covers must be removed.Right-side

Back cover1. Open the face-up delivery door all the way, and then press the door down to disengagetwo door-stops (callout 1).2. Remove two screws (cal

4. Open the "legal-size" cover (callout 3), and then disengage one tab (callout 4).3 4Figure 6-4. Removing the back cover (2 of 3)ENWW Cover

5. Lift the bottom of the cover first, and then lift the cover away from the printer.Figure 6-5. Removing the back cover (3 of 3)6. Tip the printer ba

I/O cover1. Rotate the I/O cover to clear tabs at the right side of the cover.Figure 6-6. Removing the I/O cover2. Lift the cover off of the printer.E