Compaq 3052 - LaserJet All-in-One B/W Laser Service Manual

HP LaserJet 3050/3052/3055 All-in-One Service Manual

Main motor ... 190Fuser ...

6. Fusing stage—During this process, the heat and pressure fuse the toner into the media to producea permanent image. The media passes between a heate

Figure 4-7 Printer (product base) paper pathENWW Printer (product base) functions 81

Jam detection in the all-in-one The top-of-page sensor (PS801) and the paper-delivery sensor (PS803) detect media moving throughthe all-in-one. If a j

HP LaserJet 3050 all-in-one unique componentsThis section presents an overview of the relationships between unique major components in theHP LaserJet

12Figure 4-9 HP LaserJet 3050 all-in-one optical and feed systems1 Optical scanning system2 ADF pickup-and-feed system84 Chapter 4 Theory of operat

ADF pickup-and-feed systemThe ADF pickup-and-feed system uses a pickup roller, a feed roller, and a delivery roller to transportthe document into, thr

The slower speed allows for a consistent space between pages of a multiple-page document, which isnecessary for correct document scanning. The one-way

Optical scanning systemThe contact image sensor (CIS) is the major component of the optical scanning system. The CISconsists of three LEDs (red, green

Figure 4-13 HP LaserJet 3050 all-in-one optical system (2 of 2)88 Chapter 4 Theory of operation ENWW

HP LaserJet 3052/3055 all-in-one unique componentsThis section presents an overview of the relationships between unique major components in theHP Lase

Secondary service menu ... 251To gain access to the seco

The image data CCD sensor uses a 300 ppi array and two half-pixel-offset 600 ppi arrays which arecapable of collecting data at 600 ppi or 1200 ppi (60

ADF paper path and ADF sensorsThe following diagram shows the ADF paper path.Figure 4-15 HP LaserJet 3052/3055 all-in-one ADF pathThe paper-present s

Fax functions and operation (HP LaserJet 3050 all-in-oneand HP LaserJet 3055 all-in-one only)The following sections describe the all-in-one fax capabi

Distinctive ring functionDistinctive ring is a service that a telephone company provides. The distinctive ring service allows threephone numbers to be

Faxing with Voice over IP servicesVoice over IP (VoIP) services provide normal telephone service, including long distance service througha broadband I

LIU in the fax subsystemTwo versions of LIU are used in the HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one. Oneis used in the North Ameri

Data pathThe magnetically coupled signals that cross the isolation barrier go either through a transformer or arelay. The TIP and RING signals use a t

Hook switch controlAnother optically coupled signal is the hook switch control. This signal from the formatter causes anoptoisolator on the LIU to act

Fax page storage in flash memoryFax pages are the electronic images of the document page. They can be created in any of three ways:scanned to be sent

5 Removal and replacement●Removal and replacement strategy●HP LaserJet 3050 all-in-one●HP LaserJet 3052/3055 all-in-one●Printer (product base)ENWW 99

HP LaserJet 3052/3055 all-in-one scanner assembly ... 306Major assemblies, HP Laser

Removal and replacement strategyThis chapter documents the removal and replacement of field-replaceable parts (FRUs) only.Reinstallation is generally

Required tools●#2 Phillips screwdriver with magnetic tip●Small flat-blade screwdriver●Long flat-blade screwdriver●#8 and #10 torx screwdrivers●Needle-

5. Perform a control-panel test from the secondary service menu (see Secondary service menuon page 251). Verify that the control-panel buttons beep wh

Parts removal orderUse the following diagrams to determine which parts of the all-in-one must be removed before servicing.NOTE HP LaserJet 3052/3055 a

Scanner side coversSeparation-pad set (not the entire assembly)HP LaserJet 3050 scanner assemblyLink assemblies and scanner support-frame springsScann

Print cartridgeTransfer rollerMedia input trayPrinter side coversRear cover and fuser coverPower supplyHP LaserJet 3050, 3052, or 3055 scanner assembl

HP LaserJet 3050 all-in-oneThis section documents removal and replacement instructions for components that are unique to theHP LaserJet 3050 all-in-on

Link assemblies and scanner support-frame springs1. Push the print-cartridge-door release and raise the scanner assembly until it is locked open.2. Us

4. Remove the link assembly. Repeat this step with the remaining link.Figure 5-8 Removing the link assemblies and scanner support-frame springs (3 of

Scanner side coversNOTE In the following figure, examine the locations of the of the locking tabs on the scannercover before you remove the cover.1. U

Laser safety statement ... 366Canadian DOC statement

2. Rotate the right-side cover away from the all-in-one, and then slide it toward the front of the all-in-one to remove it.12Figure 5-11 Removing the

Separation-pad setNOTE The separation-pad set and the separation-pad assembly are two different assemblies.The separation-pad set consists of the pad,

Control-panel bezel1. Carefully release three locking tabs, one at the front and one on each side (callout 1).1Figure 5-13 Removing the control-panel

3. Push the control-panel bezel toward the back of the all-in-one to release the three rear locking tabsand then remove it.Figure 5-15 Removing the c

Control-panel assemblyCAUTION The control panel is an ESD-sensitive component.1. Remove the control-panel bezel. See Control-panel bezel on page 112.2

Media lever and media-lever torsion spring1. Remove the control-panel bezel. See Control-panel bezel on page 112.2. Carefully dislodge and remove the

Separation-pad assembly1. Remove the control-panel bezel. See Control-panel bezel on page 112.2. Remove five screws (callout 1) and the sheet-metal pl

3. Rotate the separation-pad assembly up until the keyed hinges can clear the hinge retainers.Figure 5-20 Removing the separation-pad assembly (2 of

Scanner assembly1. Rotate the ADF input tray assembly toward the front of the all-in-one, and then lift it up and off ofthe all-in-one.Figure 5-22 Re

3. Remove the right-side cover-mounting screw (callout 1).Figure 5-24 Removing the scanner assembly (3 of 14)4. Release the back of the cover.Figure

xii ENWW

5. Release the bottom tab (callout 2).2Figure 5-26 Removing the scanner assembly (5 of 14)6. Rotate the back side of the cover away from the all-in-o

7. Disconnect two flat, flexible cables (FFCs; callout 3) and one wire-harness connector (callout 4).CAUTION Do not bend or fold the FFCs during the r

9. Grasp the tab on the gear-drive arm bracket and carefully flex it away from the scanner assemblyto release the bracket.Figure 5-30 Removing the sc

11. Use a small flat-blade screwdriver to release the link tabs on each link assembly.WARNING! When the link assemblies are disengaged, the scanner as

ABCFigure 5-33 Removing the scanner assembly (12 of 14)124 Chapter 5 Removal and replacement ENWW

13. Remove one screw (callout 5). Carefully remove the grounding shield (callout 6) from the wire loom.Feed the two FFCs and the wire-harness through

Scanner assembly top cover1. Remove the following assemblies or components:●Scanner assembly. See Scanner assembly on page 118.●Scanner side covers. S

3. Feed the FFCs, the wire connectors, and the ground strap through the opening in the scanner-assembly base.CAUTION Examine how the FFCs and wire-har

4. Remove the two left-side mounting screws (callout 2).Reinstallation tip When reinstalling the scanner assembly top cover make sure that it isseated

Top-cover assembly1. Remove the following assemblies:●Scanner assembly See Scanner assembly on page 118.●Scanner assembly top cover. See Scanner assem

List of tablesTable 1-1 Priority input slot specifications, HP LaserJet 3050/3052/3055 all-in-one ... 21Table 1-2

Pickup roller1. Remove the following assemblies:●Scanner assembly. See Scanner assembly on page 118.●Scanner assembly top cover. See .Scanner assembly

White platen1. Remove the following assemblies:●Scanner assembly. See Scanner assembly on page 118●Scanner assembly top cover. See Top-cover assembly

HP LaserJet 3052/3055 all-in-oneThis section documents removal and replacement instructions for components that are unique to theHP LaserJet 3052/3055

Flatbed lid1. Open the ADF cover. Carefully pry the ADF motor cover off (from right to left) and away from thescanner assembly.132Figure 5-48 Removin

2. Disconnect two wire connectors (callout 1). Close the ADF cover.1Figure 5-50 Removing the flatbed lid (2 of 5)3. Locate the hinge-retainer clip on

4. Lift up on the retainer-clip locking tab, and pull the clip down and away from the flatbed lid. Figure 5-52 Removing the flatbed lid (4 of 5)5. Ra

Link assemblies and scanner support-frame springs1. Push the print-cartridge access button and raise the scanner assembly until it is locked open.2. U

4. Remove the link assembly. Repeat this step with the remaining link.Figure 5-56 Removing the link assemblies and scanner support-frame springs (3 o

Control-panel bezelGently pry the outside edges (at callout 1 in Figure 5-58 Removing the control-panel bezelon page 138) of the control-panel bezel a

Control-panel assemblyCAUTION The control-panel is an ESD-sensitive component.1. Remove the control-panel bezel. See Control-panel bezel on page 138.2

Table 7-19 Internal components, printer (product base) (2 of 3) ... 323Table 7-20 I

3. Rotate the back of the control panel up to release the front edge of the panel from two locking tabs,and then disconnect one FFC (callout 2). Remov

ADF separation padCAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprintscan contaminate the glass or pad and c

ADF input-tray flag1. Open the ADF cover.2. Gently flex the plastic rib until the front flag hinge clears the mounting hole. Rotate the ADF input-flag

ADF pickup roller and load-arm assembly (HP LaserJet 3052/3055 all-in-one)1. Open the ADF cover.Figure 5-63 Replacing the ADF pickup roller and load-

3. Rotate the load-arm assembly.Figure 5-65 Replacing the ADF pickup roller and load-arm assembly (3 of 6)4. Lift the load-arm assembly, slide the as

5. Insert the gear-end of the new load-arm assembly into the all-in-one and then lower the assemblyinto place.12Figure 5-67 Replacing the ADF pickup

ADF scanner glassCAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprintscan contaminate the glass or pad and ca

3. Slide the black glass-locking lever toward the back of the all-in-one to release the glass, and thencarefully remove the glass.CAUTION Avoid touchi

Scanner assemblyCAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprintscan contaminate the glass or pad and cau

4. Release the bottom tab (callout 2).2Figure 5-74 Removing the scanner assembly (3 of 13)5. Rotate the back side of the cover away from the all-in-o

List of figuresFigure 1-1 HP LaserJet 3050/3052/3055 all-in-one identification label ... 11F

6. Disconnect two wire-harnesses and two FFCs on the formatter (callout 4).CAUTION Do not bend or fold the FFCs during the removal or reinstallation p

8. Grasp the tab on the gear-drive arm bracket and carefully flex it away from the scanner assemblyto release the bracket.Figure 5-78 Removing the sc

10. Use a small flat-blade screwdriver to release the hinge tabs on each front hinge.WARNING! When the front hinges are disengaged, the scanner assemb

ABCFigure 5-81 Removing the scanner assembly (10 of 13)ENWW HP LaserJet 3052/3055 all-in-one 153

12. Use needle-nose pliers to squeeze the two plastic wire-harness retainers and push them up intothe scanner support-frame.WARNING! Do not clip wire

14. Rotate the scanner assembly toward the rear of the all-in-one until the rear hinges clear the chassishinge pins. Lift the scanner assembly off of

Printer (product base)This section documents removal and replacement instructions for components that are common to theHP LaserJet 3050 all-in-one, HP

Printer separation pad1. At the back of the all-in-one, remove two screws (callout 1).1Figure 5-86 Removing the printer separation pad (1 of 2)2. Rem

Print cartridgeCAUTION To prevent damage, do not expose the print cartridge to direct or bright light. Coverit with a piece of paper.1. Push the print

Printer pickup roller1. Remove the print cartridge and locate the printer pickup roller. See Print cartridge on page 158.Figure 5-90 Removing the pri

Figure 5-20 Removing the separation-pad assembly (2 of 3) ... 117Figure 5-21 Re

3. Gently pull the roller up and out of the all-in-one.Figure 5-92 Removing the printer pickup roller (3 of 5)4. Circular and rectangular pegs on eac

5. Rotate the top of the pickup roller into position until the white tabs on each side of the roller snapinto place.Figure 5-94 Removing the printer

Installing the scanner cushions1. Open the print-cartridge door.2. Place a scanner cushion in the both well on the scanner support-frame (callout 1).

Media input tray1. Open the media input tray lid.Figure 5-96 Removing the media input tray (1 of 3)2. Slide the adjustable media guides to the center

3. Depress the pickup-tray locking tabs to release the media input tray, and then pull it out and awayfrom the all-in-one.Figure 5-98 Removing the me

Transfer rollerCAUTION Do not touch the black-sponge portion of the transfer roller. Skin oils deposited onthe transfer roller might cause print-quali

3. The clamps on the paper guide fit over the bearings on each end of the transfer roller. Do not touchthe black-sponge portion of the transfer roller

Side coversNOTE The procedure for removing the right-side and left-side covers is identical, with theexception of the location of the screw that faste

3. Release the bottom tab (callout 2).CAUTION When removing the left-side cover, hang the all-in-one off of the table to gainaccess to the bottom tab.

Print-cartridge door1. Remove the scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assemblyon page 118. For the HP LaserJet 3052/305

Figure 5-70 Removing the ADF scanner glass (2 of 3) ... 146Figure 5-71

Rear cover and fuser cover1. Remove the right-side and left-side covers. See Side covers on page 167.2. Remove one screw (callout 1).1Figure 5-108 Re

4. Rotate the bottom of the fuser cover away from the printer, and remove the fuser cover.Figure 5-110 Removing the rear cover and fuser cover (3 of

Front cover1. Remove the right-side and left-side covers. See Side covers on page 167.2. Release the lower right-side front-cover locking tab and slig

4. Pry up and pull out on the front cover to release it from the printer. Remove the front cover.Figure 5-113 Removing the front cover (3 of 3)ENWW P

Speaker assembly1. Remove the right-side printer cover. See Side covers on page 1672. Disconnect one wire-harness connector (callout 1), unclip one wi

Power supply1. Remove the rear cover and fuser cover. See Rear cover and fuser cover on page 170.2. Disconnect one spade connector (callout 1) and rem

4. Remove four screws (callout 5).5Figure 5-118 Removing the power supply (3 of 5)5. Unclip two clips (callout 6) and remove the switch cover.6Figure

6. Unclip one clip (callout 7) and dislodge, but do not remove, the wire guide, and then remove thepower supply.7Figure 5-120 Removing the power supp

Formatter and line interface unit (LIU)CAUTION The formatter and LIU are ESD-sensitive devices.NOTE The HP LaserJet 3052 all-in-one does not have a li

●Figure 5-122 HP LaserJet 3050 all-in-one formatter and LIU on page 179 shows theformatter and LIU from an HP LaserJet 3050 all-in-one.Figure 5-122 H

Figure 5-120 Removing the power supply (5 of 5) ... 177Figure 5

●Figure 5-124 HP LaserJet 3055 all-in-one formatter and LIU on page 180 shows theformatter and LIU from an HP LaserJet 3055 all-in-one.Figure 5-124 H

5. Gently separate the formatter from the sheet-metal shield. Mount the replacement formatter on thisshield.Figure 5-126 Removing the formatter (3 of

Scanner support-frame1. Remove the following assemblies●Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assemblyon page 118. For th

3. Rotate the gear-drive bracket until the retainer on the gear-drive arm aligns with the opening in thebracket, and remove the bracket.Figure 5-128

5. If you are removing the scanner support-frame in order to gain access to the fuser, remove twoscrews (callout 3) and the chassis reinforcement plat

Engine controller unit (ECU)1. Remove the following assemblies:●Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assemblyon page 118

3. Use a long flat-blade screwdriver to disengage the two ECU shield retainer hooks, one at eachside (left hook shown; callout 2), inside the all-in-o

5. Disconnect one FFC (callout 4) from the power supply.CAUTION Do not bend or fold the FFCs during the removal or reinstallation process.3Figure 5-13

7. Carefully remove the ECU from the printer. As you remove it, unweave the wire-harnesses andFFCs from the wire looms, and disconnect one wire-harnes

Laser/scanner assembly1. Remove the following assemblies:●Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assemblyon page 118. For

1 Product information●All-in-one configurations●All-in-one features●All-in-one parts●Software installation●Choosing paper and other print mediaENWW 1

Main motor1. Remove the following assemblies:●Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assemblyon page 118. For the HP Laser

3. Remove one screw (callout 3), and remove the main motor.3Figure 5-139 Removing the main motor (2 of 2)ENWW Printer (product base) 191

Fuser1. Remove the following assemblies:●Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assemblyon page 118. For the HP LaserJet 3

5. Lift the fuser assembly at the right and remove it.Figure 5-141 Removing the fuser assembly (2 of 2)NOTE When replacing the fuser assembly, be sur

Paper-pickup assembly1. Remove the following assemblies:●Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assemblyon page 118. For t

6 Troubleshooting●Troubleshooting process●Control-panel messages●Jams●Print image-quality problems●Scan/copy image-quality problems●ADF problems●Fax t

Troubleshooting processNOTE The HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one have faxingcapabilities. The HP LaserJet 3052 all-in-one d

StepnumberVerification step Possible problems SolutionsClean the paper path.Poor print quality. See Print image-quality problemson page 223.4 Does the

StepnumberVerification step Possible problems SolutionsA problem might exist with the networkconnection.If printing through the network, verify that t

Control-panel messagesThe majority of the control-panel messages are intended to guide the user through typical operation.The control-panel messages i

All-in-one configurationsThe all-in-one is available in the following configurations.HP LaserJet 3050 all-in-oneHP LaserJet 3050 all-in-one printer, f

Control panel message Event log error message Description Recommended actiontelephone cord into a jack foranother phone line.Try a different telephone

Control panel message Event log error message Description Recommended actionMake sure that the phone isworking by disconnecting the all-in-one, pluggi

Control panel message Event log error message Description Recommended actionCheck that the telephone cord issecurely connected byunplugging and replug

Control panel message Event log error message Description Recommended actionCheck for a dial tone on thephone line by pressing Start Fax.Unplug the te

Control panel message Event log error message Description Recommended actionPlug the all-in-one telephonecord into a jack for another phoneline.No fax

Critical error messagesCritical error messages can indicate some kind of failure. Cycling the power might fix the problem. If acritical error persists

Control panel message Description Recommended actionall-in-one: See Scanner assemblyon page 148.52 Scanner Error The all-in-one has experienced an int

Control panel message Description Recommended actionADF door is open (HP LaserJet 3052/3055all-in-one only)(HP LaserJet 3052/3055 all-in-one only)The

Control panel message Description Recommended actionScanner Bulb Failure (HP LaserJet3052/3055 all-in-one only)The scanner assembly experienced ascann

Event-log codesThese codes appear in the event-log section of the configuration report. Use this table to associate anevent-log code with a descriptio

HP LaserJet 3052/3055 all-in-oneHP LaserJet 3052 all-in-one printer, scanner, copier●Prints letter-size pages at speeds up to 19 ppm and A4-size pages

Event code Event sub-code Event795 or 6 or 7 Reserved30016 0 Insufficient memory30017 0 Print page punt30035 0 NVRAM error30036 0 NVRAM service error3

JamsThis section contains instructions for clearing jams from the all-in-one.CAUTION Always try to remove a jam in the direction that the media feeds

Where to look for jamsJams can occur in these locations:●Inside the all-in-one●In output areas●In the ADFFind and remove the jam by using the instruct

3. Replace the print cartridge and close the print-cartridge door.ENWW Jams 213

Input traysTo clear a jam in the input trays, perform the following steps:CAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to

Output binCAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams.Damage caused by sharp objects will not be covered

Solving print paper-feed problemsUse the following tables to solve paper-feed problems when printing.Paper-feed solutions, printingPages are coming ou

The printer feeds multiple sheets or jams frequently from the main input tray or priority input tray. CauseSolutionThe output capacity was exceeded in

Jams occur in the automatic document feeder (ADF)Occasionally, media becomes jammed during a fax, copy, or scan job.You are notified of a media jam by

2. Remove the jam cleanout part. Using both hands, lift up on the two handles until the part unsnaps.Rotate and lift out the cleanout part and set it

All-in-one featuresExcellent print quality●1200 dots per inch (dpi) with Image REt 2400 text and graphics●Adjustable settings to optimize print qualit

7. Close the lid to the flatbed scanner.8. Lower the green lever.9. Reinstall the cleanout part by inserting it as shown. Push down on the two tabs un

Solving ADF paper-feed problems Use the following tables to help solve paper-feed problems when scanning or copying.Paper-feed solutions, scanning/cop

The ADF feeds multiple sheets or jams frequently from the media input tray.CauseSolutionPickup roller on page 130. For information about replacing the

Print image-quality problemsIf the problem occurs when printing, see Solving print image-quality problems on page 224.If the problem occurs when copyi

Solving print image-quality problemsUse the following tables to help solve problems with printed pages.NOTE Some image-quality problems can be isolate

Toner specks appear on the printed page..CauseSolutionThe media does not meet HP specifications (for example, it istoo moist or too rough). Make sure

Vertical lines appear on the printed page.Cause SolutionThe priority input tray is not in place. Adjust the priority input tray.The photosensitive dru

Toner smears appear on the printed page.Cause SolutionIf the toner smears appear on the leading edge of the media,the media guides are dirty.Wipe the

The toner is loose, and it does not stay attached to the printed page.Cause SolutionThe fuser film is torn or has holes.Replace the fuser. See Fuser o

Characters are poorly formed and are producing hollow images.Cause SolutionThe media is too slick. Try a different media. Make sure that the media mee

All-in-one partsBefore using the all-in-one, familiarize yourself with its parts.HP LaserJet 3050 all-in-one partsFront view681235471 Tray 12 Priority

Pages are skewed (crooked). Cause SolutionThe input tray is too full. Remove some of the sheets. The HP LaserJet 3050 all-in-oneADF input tray can hol

Large amounts of toner are scattered around the characters.Cause SolutionThe media resistivity is too high. 1. Use a different media. Make sure that t

Scan/copy image-quality problems Use the following tables to help solve problems with scanned or copied pages.NOTE Some image-quality problems can be

Pages are skewed (crooked).Cause SolutionThe ADF input tray is too full. Remove some of the sheets. The HP LaserJet 3050 all-in-oneADF input tray can

Vertical white stripes appear.Cause SolutionThe media does not meet HP specifications (for example, it istoo moist or too rough).Make sure that the me

The printed page has a gray background.Cause SolutionThe priority input tray is not in place. Adjust the priority input tray.The print density setting

Vertically-aligned black streaks or smears appear on successive pages.Cause Solution3052/3055 all-in-one: See Scanner assemblyon page 148.Scanned imag

Scanned text is not clear. Cause SolutionThe lighter/darker and resolution settings need to be adjustedbefore scanning.Check that the settings are cor

Large amounts of toner are scattered around the characters.Cause SolutionThe media resistivity is too high. 1. Use a different type of media. Make sur

ADF problems“Document Loaded”continually appears on the control-panel display.CauseSolutionThe ADF paper-sensor flag is damaged. Replace the ADF.The “

Back view11912109Interface ports10Security-lock slot11Power switch12Power receptacleInterface ports121Hi-Speed USB 2.0 port2Fax ports6 Chapter 1 Pro

Fax troubleshooting (HP LaserJet 3050/3055 all-in-one)General fax troubleshootingVerify the following information before troubleshooting fax problems.

NOTE Hewlett-Packard does not recommend using a parallel splitter (T-splitter) withthe all-in-one because it might degrade the quality of the telephon

The fax activity log or fax call reports are printing at inappropriate timesCauseSolutionThe fax activity log or fax call report settings are incorrec

The all-in-one is not receiving incoming fax calls.CauseSolutionThe fax cord is not connected correctly or is not the cord thatcame with the all-in-on

Fax send troubleshootingThe fax stops during a send operation.CauseSolutionThe telephone line is not working. Increase the speaker volume, and then pr

DSL problemsA digital subscriber line (DSL) uses digital technology over standard copper phone wires. DSL servicesrely on an AM signal. The HP LaserJe

Control-panel-display problemsCAUTION Static electricity can cause unexpected black lines or dots to appear on the all-in-one control-panel display. D

Functional checksUse the following procedures to help diagnose and solve problems that occur in the print engine.Control-panel testTo perform a contro

To perform a half self-test check1. Print a self-test page. (See Troubleshooting tools on page 259.)2. Open the print-cartridge door after the paper a

High-voltage contacts checkThe high-voltage contacts in the product must have a good connection with the contacts on the printcartridge to provide the

Control panel2 3 5411 Fax controls. Use the fax controls to change commonly used fax settings. For information about using the fax controls,see the on

To check the high-voltage connector pins The assembly has three spring-loaded pins (callout 1) to contact the print cartridge. Verify that the pinsare

Service-mode functionsUse the following information to perform system-wide reset procedures and to adjust certain globalsettings such as the country/r

Developer’s menuUse the developer’s menu to adjust fax data-store parameters and to run various tests. The followingis a hierarchical diagram of the d

Main menu Submenu SubmenuError DiffusionClock Dithering OnOffPick and Kick (none)To gain access to the developer’s menu1. Make sure that Ready appears

Changing the country/region code parametersThree situations can occur that necessitate changing the country/region or language settings for theproduct

Soft resetBefore performing an NVRAM init, attempt a soft reset, which does not reset configuration settings orcause a loss of data.Performing a soft

NVRAM init NVRAM init returns all stored parameters in NVRAM to factory default values or to a default ROM value,depending on the variable, and perfor

System settings for localized productsNOTE The HP LaserJet 3052 all-in-one does not have an LIU because it does not have faxcapabilities. The list of

Country/region LIU installed Default media size1Date format Time formatKoreaUS/rest of the world A4 yymmdd a.m./p.m.Luxemburg Europe A4 ddmmyy 24 hour

Troubleshooting toolsUse the control panel to print configuration reports and demo pages. The configuration report showsthe settings that have been se

HP LaserJet 3052/3055 all-in-one partsFront view71263451 Media input tray (tray 1)2 Priority input slot3 Output bin4 Automatic document feeder (ADF) i

T.30 protocol trace (HP LaserJet 3050 all-in-one and HP LaserJet3055 all-in-one only)Use a T.30 protocol trace report to troubleshoot fax transmission

V.34 fax standardV.34 is the industry-wide fax standard for full-duplex modems that transmit at speeds up to 28,000 bps.When V.34 is turned on, the pr

Code Description Recommended actionerrors. This is usually caused by extremelypoor line conditions.Set the ECM to Off. Errors might still occur, which

Code Description Recommended actionThe power at the remote machine has beeninterrupted or deliberately turned off, causingthe fax session to be interr

Code Description Recommended actionalthough the modem has not detected aremote disconnect. The remote machine isprobably transmitting fill bytes inste

Table 6-7 Fax send codesCode Description Recommended action300 The fax session has been completed withouterrors.None required.311 The user has presse

Code Description Recommended actionConfigure the remote machine for poll transmission. Theremote user must first load a document to transmit andthen c

Code Description Recommended actionThe remote machine has encountered afeature incompatibility, which caused it toterminate the session.367 - 372 373-

Code Description Recommended action389 The product has originated a fax session andhas reattempted V.8 negotiations multipletimes without success.1. A

Code Description Recommended actionthe handshake with the remote machine andwas consequently unable to transmit a T.30frame. This occurs when the line

Back view1011898 Interface ports9 Security-lock slot10 Power switch11 Power receptacleInterface portsThe HP LaserJet 3052/3055 all-in-one has two inte

Translating the fax trace report (HP LaserJet 3050 all-in-one and HP LaserJet3055 all-in-one only)Print a fax log report. The fax log report contains

Sequence Calling station Called station17Receive message (SCAN), check forerrors18 Transmit FSK19 At end of message, send one of thefollowing:●EOM●EOP

Commands Comments Appropriate responses(EOR-NULL)Indicates the next block transmissionfrom the transmitter to the receiver(ERR) (RNR) (CRP)Any one of

Table 6-10 Fax abbreviations (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only)Abbreviation Function Signal format (“X”= any #)CED Ca

Abbreviation Function Signal format (“X”= any #)GIGroup identification 1850 HzHDLC High-level data link controlLCS Line conditioning signals 1100 HzMC

Abbreviation Function Signal format (“X”= any #)SEP Selective polling 1000 0101SUB Sub-address X100 0011V.xx Protocol version used (Group 3 only) V.27

3055Figure 6-3 Example of a T.30 trace of a successfully sent faxNOTE Phase A, call establishment, does not show up on a trace report. Phase C is the

3055Figure 6-4 Example of a T.30 trace of a successfully received faxENWW Troubleshooting tools 277

Repetitive image defect ruler Use the repetitive image-defect ruler to help solve image quality problems. Place the top line on theruler next to the f

Firmware updates and recoveryThe device uses a flash-memory-based formatter that enables the firmware code to be updated whenupdated firmware is avail

HP LaserJet 3050/3052/3055 All-in-OneService Manual

Control panel235411 Fax controls (HP LaserJet 3055 all-in-one only; the HP LaserJet 3052 all-in-one does not have fax controls). Usethe fax controls t

280 Chapter 6 Troubleshooting ENWW

7 Parts and diagrams●Ordering parts and supplies●Accessories●Diagrams●HP LaserJet 3050 all-in-one scanner assembly●HP LaserJet 3052/3055 all-in-one sc

Ordering parts and suppliesParts that wear The parts on the product that wear are listed in Table 3-1 Life expectancies on page 38. Parts areavailable

AccessoriesThe following accessories are available for the HP LaserJet 3050/3052/3055 all-in-one.Table 7-2 AccessoriesProduct name Description Part n

DocumentationTable 7-3 DocumentationDescription Languages Part numberService manual (this manual) English only Q6502-90901Service and support trainin

Common hardware The product has three common fasteners. See Table 7-4 Common fasteners on page 285 for adescription of these screw types.Table 7-4 C

Table 7-5 Replacing the printer engine assembly HP LaserJet 3050 all-in-one HP LaserJet 3052/3055 all-in-oneReplacement print engine●Q6504-67001; 110

HP LaserJet 3050 all-in-one HP LaserJet 3052/3055 all-in-oneScanner-top components●Scanner base-frame assembly●RL1-0376-000CN; Scanner sheet, groundin

DiagramsComponent locations, HP LaserJet 3050/3052/3055 all-in-one printer(product base)21Figure 7-1 Major components1 Fuser assembly2 Paper-pickup a

1234 567Figure 7-2 Solenoid, sensors, switches, and motor1 Print-cartridge-door switch2 Power switch/power supply3 Paper-width sensor4 Paper-delivery

Model and serial numbersAn identification label is located on the back of the all-in-one. This label contains the model and serialnumbers. The serial

12Figure 7-3 PCBs1 Engine controller unit (ECU)2 FormatterNOTE For the HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one, the LIU is attach

Main wiring FormatterHP LaserJet 3050J2Figure 7-4 Main wiring, HP LaserJet 3050 all-in-one scanner assemblyENWW Diagrams 291

J6P11P18P6P17J5FormatterHP LaserJet 3050Figure 7-5 Main wiring, HP LaserJet 3050 all-in-one printer (product base)292 Chapter 7 Parts and diagrams

FormatterHP LaserJet 3052/3055Scanner sub-assembly (SSA)Flatbedmotor12345LCD and key switch / LED PCAFront panelP27891011456123ADFADF motorPapersensor

J8P15P22P10P21J7NOTE: Connector P22 is on theHP LaserJet 3055 all-in-one only.J5LAN interfaceFormatterHP LaserJet 3052/3055Figure 7-7 Main wiring, HP

Formatter PCA and LIU connectorsP6P11J5P17P18P1J1J2J6Figure 7-8 Formatter connections, HP LaserJet 3050 all-in-oneTable 7-6 Formatter connections, H

J3P3J1J2J5J8P21J7P15P10P22NOTE: Connector P22 and its associated faxcircuitry is for the HP LaserJet 3055 all-in-one only.Figure 7-9 Formatter connec

J1J2Figure 7-10 LIU connections, HP LaserJet 3050/3055 all-in-oneTable 7-8 LIU connections, HP LaserJet 3050/3055 all-in-oneName ConnectionJ1 Format

HP LaserJet 3050 all-in-one scanner assemblyFigure 7-11 Scanner assembly, HP LaserJet 3050 all-in-one298 Chapter 7 Parts and diagrams ENWW

Table 7-9 Scanner assembly, HP LaserJet 3050 all-in-oneRef Description Part number Qty1 Pickup-tray assembly, HP LaserJet 3050 all-in-one scanner RM1

Software installationIf the computer meets the recommended minimum requirements, you have two options when installingthe software from the CDs that ca

ADF components, HP LaserJet 3050 all-in-one2334611109731038A8B8C1313A12Figure 7-12 ADF components, HP LaserJet 3050 all-in-one300 Chapter 7 Parts a

Table 7-10 ADF components, HP LaserJet 3050 all-in-oneRef Description Part number Qty2 Sheet, grounding, HP LaserJet 3050 all-in-one scanner RL1-0376

Ref Description Part number QtyNot shown Control-panel overlay, Thai, HP LaserJet 3050 all-in-one Q6504-00023 1Not shown Control-panel overlay, Turkis

ENWW HP LaserJet 3050 all-in-one scanner assembly 303

Guide assembly, HP LaserJet 3050 all-in-one8139142020AFigure 7-13 Guide assembly, HP LaserJet 3050 all-in-one304 Chapter 7 Parts and diagrams ENWW

Table 7-11 Guide assembly, HP LaserJet 3050 all-in-oneRef Description Part number QtyGuide assembly, HP LaserJet 3050 all-in-one scanner RM1-3066-000

HP LaserJet 3052/3055 all-in-one scanner assemblyFigure 7-14 Scanner assembly, HP LaserJet 3052/3055 all-in-one306 Chapter 7 Parts and diagrams ENW

Table 7-12 Scanner assembly, HP LaserJet 3052/3055 all-in-oneRef Description Part number QtyFlatbed scanner assembly Q6502-60116 11 Flatbed scanner a

Major assemblies, HP LaserJet 3052/3055 all-in-oneFigure 7-15 Major assemblies, HP LaserJet 3052/3055 all-in-one308 Chapter 7 Parts and diagrams EN

Table 7-13 Major assemblies, HP LaserJet 3052/3055 all-in-oneRef Description Part number Qty1 ADF cover replacement, HP LaserJet 3052/3055 all-in-one

Printer driversThe all-in-one comes with software that allows the computer to communicate with the all-in-one (byusing a printer language). This softw

Scanner components, HP LaserJet 3052/3055 all-in-oneFigure 7-16 Scanner components, HP LaserJet 3052/3055 all-in-one310 Chapter 7 Parts and diagram

Table 7-14 Scanner components, HP LaserJet 3052/3055 all-in-oneRef Description Part number Qty1 Bezel, Arabic, HP LaserJet 3052 all-in-one Q6502-4002

Ref Description Part number Qty1 Bezel, Danish, HP LaserJet 3055 all-in-one Q6503-40013 11 Bezel, Dutch, HP LaserJet 3055 all-in-one Q6503-40008 11 Be

ENWW HP LaserJet 3052/3055 all-in-one scanner assembly 313

Printer (product base), HP LaserJet 3050/3052/3055 all-in-one321Figure 7-17 Printer (product base), HP LaserJet 3050/3052/3055 all-in-one314 Chapter

Table 7-15 Printer (product base), HP LaserJet 3050/3052/3055 all-in-oneRef Description Part number Qty1 Print engine HP LaserJet 3050 all-in-one, re

External covers, printer (product base)1237546Figure 7-18 External covers, printer (product base)316 Chapter 7 Parts and diagrams ENWW

Table 7-16 External covers, printer (product base)Ref Description Part number Qty1 Door, print cartridge RC1-8372-000CN 12 Cover, right RC1-8374-000C

Formatter and LIUFigure 7-19 Formatter and LIU318 Chapter 7 Parts and diagrams ENWW

Table 7-17 Formatter and LIURef Description Part number Qty1 Formatter, HP LaserJet 3050 all-in-one Q7844-60002 11 Formatter, HP LaserJet 3052 all-in

Select the correct printer driverSelect a printer driver based on the operating system in use and the way that all-in-one is used. Seethe printer-driv

Internal components, printer (product base)AABB158501(PS803)(J203)7(J202)(PS802)(PS801)615015022121A20Figure 7-20 Internal components, printer (produ

Table 7-18 Internal components, printer (product base) (1 of 3)Ref Description Part number Qty1 Panel, rear RC1-8368-000CN 16 Separation-pad assembly

ABBA671491015(J201)(J801)(J904)Figure 7-21 Internal components, printer (product base) (2 of 3)322 Chapter 7 Parts and diagrams ENWW

Table 7-19 Internal components, printer (product base) (2 of 3)Ref Description Part number Qty6 Laser/scanner assembly RM1-2033-030CN 17 Engine-contr

(M1)(J3)(J001)(SP1)522264224Figure 7-22 Internal components, printer (product base) (3 of 3)324 Chapter 7 Parts and diagrams ENWW

Table 7-20 Internal components, printer (product base) (3 of 3)Ref Description Part number Qty2 Bushing RC1-1953-000CN 15 Link, coupling lower RC1-24

Alphabetical parts listTable 7-21 Alphabetical parts listDescription Part number Table and pageADF cleanout/comb C7309-40153 Major assemblies, HP Las

Description Part number Table and pageBezel, Chinese traditional, HP LaserJet 3055 all-in-oneQ6503-40023 Scanner components,HP LaserJet 3052/3055 all-

Description Part number Table and pageBezel, Greek, HP LaserJet 3055 all-in-one Q6503-40020 Scanner components,HP LaserJet 3052/3055 all-in-one on pag

Description Part number Table and pageBezel, Russian, HP LaserJet 3055 all-in-one Q6503-40014 Scanner components,HP LaserJet 3052/3055 all-in-one on p

Gaining access to the printer driversUse one of the following methods to open the printer drivers from the computer:Operating System To change the set

Description Part number Table and pageControl panel, HP LaserJet 3052 all-in-one Q6502-60101 Scanner components,HP LaserJet 3052/3055 all-in-one on pa

Description Part number Table and pageControl-panel overlay, Thai, HP LaserJet 3050 all-in-one Q6504-00023 ADF components, HP LaserJet3050 all-in-one

Description Part number Table and pageFuser, 110-127V RM1-3044-000CN Internal components, printer(product base) (1 of 3)on page 321Fuser, 220-240V RM1

Description Part number Table and pagePickup assembly RM1-3043-000CN Internal components, printer(product base) (1 of 3)on page 321Pickup tray assembl

Description Part number Table and pageScanner cushion RC1-2476-000CN External covers, printer(product base) on page 317Scanner frame assembly, HP Lase

Description Part number Table and pageSeparation-pad set, HP LaserJet 3050 all-in-one scanner RM1-0891-000CN Guide assembly, HP LaserJet3050 all-in-on

Numerical parts listTable 7-22 Numerical parts listPart number Description Table and page5185-7441 Scanner-hinge tool ADF components, HP LaserJet3050

Part number Description Table and pageQ3948-60214 ADF input tray Scanner assembly,HP LaserJet 3052/3055 all-in-one on page 307Q3948-67902 Kit, replace

Part number Description Table and pageQ6502-40020 Bezel, Hungarian, HP LaserJet 3052 all-in-one Scanner components,HP LaserJet 3052/3055 all-in-one on

Part number Description Table and pageQ6502-67001 Print engine HP LaserJet 3052 all-in-one, replacement 110 V Printer (product base),HP LaserJet 3050/

Software for WindowsWhen you install the software for Windows, you can directly connect the all-in-one to a computer byusing a USB cable, or you can c

Part number Description Table and pageQ6503-40015 Bezel, Czech, HP LaserJet 3055 all-in-one Scanner components,HP LaserJet 3052/3055 all-in-one on pag

Part number Description Table and pageQ6504-00006 Control-panel overlay, Italian, HP LaserJet 3050 all-in-one ADF components, HP LaserJet3050 all-in-o

Part number Description Table and pageQ6504-69001 Print engine HP LaserJet 3050 all-in-one, exchange 110 V Printer (product base),HP LaserJet 3050/305

Part number Description Table and pageRC1-8372-000CN Door, print cartridge External covers, printer(product base) on page 317RC1-8373-000CN Cover, lef

Part number Description Table and pageRM1-2062-000CN Transfer-roller assembly Internal components, printer(product base) (1 of 3)on page 321RM1-3043-0

Part number Description Table and pageRU5-2492-000CN Spring, compression Internal components, printer(product base) (2 of 3)on page 323RU5-2885-000CN

346 Chapter 7 Parts and diagrams ENWW

A All-in-one specifications●Physical specifications●Electrical specifications●Power consumption●Environmental specifications●Acoustic emissionsENWW 34

Physical specificationsTable A-1 Physical specificationsProduct Height Depth Width WeightHP LaserJet 3050 all-in-one 459 mm(18.07 inches)443 mm(17.44

Power consumptionTable A-3 Power consumption (average, in watts)1 Product model Printing2Copying2Ready2PowerSave OffHP LaserJet 3050 all-in-one 380 W

3. Scroll through the list of software programs and click HP LaserJet 3050/3052/3055 all-in-one.4. Click Remove.ENWW Software installation 17

Acoustic emissionsTable A-5 Acoustic emissions (HP LaserJet 3050 all-in-one)1Sound Power Level Declared per ISO 92962Printing (18 ppm)3LWAd = 6.3 Bel

B Service and supportENWW 351

Hewlett-Packard limited warranty statementHP PRODUCT DURATION OF LIMITED WARRANTYHP LaserJet 3052/3055 all-in-one One year limited warrantyHP warrants

Print Cartridge Limited Warranty StatementThis HP product is warranted to be free from defects in materials and workmanship.This warranty does not app

354 Appendix B Service and support ENWW

C Regulatory information●FCC compliance●Environmental Product Stewardship program●Telephone Consumer Protection Act (United States)●IC CS-03 requireme

FCC complianceThis equipment has been tested and found to comply with the limits for a Class B digital device, pursuantto Part 15 of the FCC rules. Th

Environmental Product Stewardship programProtecting the environmentHewlett-Packard Company is committed to providing quality products in an environmen

HP LaserJet printing suppliesIt's easy to return and recycle your empty HP LaserJet print cartridges—free of charge—with HP PlanetPartners. HP is

Material restrictionsThis HP product contains mercury in the fluorescent lamp or scanner that may require special handlingat end-of-life.This HP produ

Software for MacintoshFor Mac OS X V10.3 and Mac OS X V10.4, use Print Center to print.The all-in-one includes the following software for Macintosh co

TaiwanFor recycling information, you can contact www.hp.com/go/recycle or contact your local authorities orthe Electronics Industry Alliance: www.eiae

●Hewlett-Packard's end-of-life product return and recycling program●MSDSENWW Environmental Product Stewardship program 361

Telephone Consumer Protection Act (United States)The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computeror ot

EU statement for telecom operationThis product is intended to be connected to the analog Public Switched Telecommunication Networks(PSTN) of European

Declaration of conformity (HP LaserJet 3390, 3392, 3055,and 3050)Declaration of Conformityaccording to ISO/IEC Guide 22 and EN 45014Manufacturer'

Declaration of conformity (HP LaserJet 3052)Declaration of Conformityaccording to ISO/IEC Guide 22 and EN 45014Manufacturer's Name: Hewlett-Packa

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

Finnish laser statementLASERTURVALLISUUSLUOKAN 1 LASERLAITEKLASS 1 LASER APPARATHP LaserJet 3050/3052/3055 all-in-one -laserkirjoitin on käyttäjän kan

368 Appendix C Regulatory information ENWW

IndexAabbreviations, fax 273ac bias 79ac power distribution 77accessibility features 4accessories, ordering 38acoustic emissions 350Add or Remove Prog

To view Macintosh Configure Device when the all-in-one is connected to a network1. Open one of the following supported Web browsers:●Safari 1.2 or lat

box contents, HP LaserJet3052/3055 all-in-one 29flat flexible, removing parts100flat, flexible, part numbers301, 331, 343part numbers 283CALIBRATION p

feeding problems,troubleshooting 221image quality, troubleshooting232loading originals in ADF 34loading originals on flatbedscanner 34operations 70cor

priority input slot, loading 36specifications 21Environmental ProductStewardship program 357environmental specifications 26,349error messagescontrol p

Help tab, HP ToolboxFX 57help, printer drivers 14high-voltage contacts check 249high-voltage power supply,operations 78hinge retainer clip, removing 1

lift plate 80light copies or scans,troubleshooting 234lights, all-in-one control panelstartup messages 71lights, scanning system 87line current contro

non-HP supplies 39NVRAMincluded 71init 256super init 255Ooff-hook 97on-hook 97on/off switch, locatingHP LaserJet 3050 all-in-one 6HP LaserJet 3052/305

ADF, HP LaserJet 3052/3055all-in-one 307, 326, 338bins 315, 333, 344control panel overlays,HP LaserJet 3050 all-in-one301, 330, 336control panel overl

door release, locating onHP LaserJet 3052/3055 all-in-one 8drum-rotation check 248extending life of 72HP fraud hotline 39installing 32non-HP 39operati

PS driversselecting 14supported 13PSTN 92pulse dialing 97Qqualitycleaning page, printing 47copies and scans 232HP ToolboxFX settings 59repetitive defe

link assemblies, HP LaserJet3052/3055 all-in-one 136LIU 178load-arm assembly, ADF 143main motor 190media input tray 163media lever and torsion spring,

Copyright and License© 2006 Copyright Hewlett-PackardDevelopment Company, LPReproduction, adaptation, or translationwithout prior written permission i

Installing Macintosh printing system software for networksTo install printer drivers for Mac OS X V10.3 and Mac OS X V10.41. Connect the network cable

features 4, 27image quality, troubleshooting232loading originals in ADF 34loading originals on flatbedscanner 34text, troubleshooting 237scanning expo

HP LaserJet 3052/3055 all-in-one 3processor 70speed dial report 259spotsprinted pages 225, 231scanned images 236STAGE periodscanner, HP LaserJet 3050

characters, partially printed225, 229checklist 196cleaning page 47contrast, copies or scans 234control panel display 246control panel messages 199cont

software components 16system requirements 27uninstalling software 16wire harnesses, replacing 100wiring diagrams 291wrapping jams 82wrinkled pages, tr

384 Index ENWW

© 2006 Hewlett-Packard Development Company, L.P.www.hp.com*Q6502-90901**Q6502-90901*Q6502-90901

Choosing paper and other print mediaThe HP LaserJet all-in-one produces documents that have excellent print quality. You can print on avariety of medi

Table 1-2 Media input tray (tray 1) specifications, HP LaserJet 3050/3052/3055 all-in-oneMedia Dimensions1Weight Capacity2Minimum size 76 x 127 mm (3

NOTE When faxing, copying, or scanning using the HP LaserJet 3052/3055 all-in-one, use theflatbed scanner if the original is fragile, thin, thick, too

24 Chapter 1 Product information ENWW

2 Operation●Site preparation●Unpacking●Installing input devices●Installing the print cartridge●Loading media into the input traysENWW 25

Site preparationPrepare the locationPlace the all-in-one on a sturdy, level surface in a well-ventilated area. Make sure that the air vents arenot blo

Minimum system requirements●Windows® 2000●Windows XP●Windows Millennium Edition (Me)●Windows Server 2000●Windows 98●Mac OS X V10.3 and later●128 MB RA

UnpackingContents of the HP LaserJet 3050 all-in-one boxA new HP LaserJet 3050 all-in-one printer, fax, copier, scanner should contain all of the item

Contents of the HP LaserJet 3052/3055 all-in-one boxA new HP LaserJet 3052 all-in-one printer, scanner, copier or HP LaserJet 3055 all-in-one printer,

Table of contents1 Product informationAll-in-one configurations ...

Installing input devicesTo install the media input tray1. Remove any shipping tape from the inside and outside of the tray.2. Slide the tray in until

2. Flex the pin on the other side inward, and insert it into the hole.To install the automatic document feeder (ADF) input tray1. Align the two tabs o

Installing the print cartridgeTo install the print cartridge1. Press the cartridge-door release to open the print-cartridge door.HP LaserJet 3050 HP L

5. Hold the print cartridge by the handle and insert it into the all-in-one and then close the print-cartridge door.CAUTION If toner gets on your clot

Loading media into the input traysThe following sections describe how to load media into the different input trays.CAUTION Printing on wrinkled, folde

CAUTION To prevent damage to the all-in-one, do not use an original that contains correctiontape, correction fluid, paper clips, or staples. Also, do

Loading input traysPriority input slotThe priority input slot holds up to 10 sheets of media up to 163 g/m2 (43 lb) in weight or 1 envelope,transparen

3 Maintenance●Managing supplies●Cleaning the all-in-one●Calibrating the scanner●Managing and maintaining the all-in-oneENWW 37

Managing suppliesLife expectancies of print cartridges and parts that wear Inspect any parts that wear when servicing the product. Replace them as nee

Replacing and recycling suppliesChanging the print cartridgeFor information about how to install a new print cartridge, see To install the print cartr

To remove software from Macintosh operating systems ... 20Choosing paper and other print media ...

Cleaning the all-in-oneTo clean the exteriorUse a soft, damp, lint-free cloth to wipe dust, smudges, and stains off of the exterior of the all-in-one.

3. Clean the ADF scanner glass and the white platen with a soft cloth or sponge that has beenmoistened with nonabrasive glass cleaner.CAUTION Do not u

To clean the flatbed glass and the ADF scanner glass (HP LaserJet3052/3055 all-in-one)Dirty glass, from fingerprints, smudges, hair, and other causes,

To clean the lid backing (HP LaserJet 3052/3055 all-in-one)Minor debris can accumulate on the white document lid backing that is located underneath th

To clean the ADF pickup-roller assembly (HP LaserJet 3052/3055 all-in-one)If the ADF has trouble feeding documents, you can clean the ADF pickup-rolle

5. Return the assembly to the same place in the ADF. The largest roller goes in back, and the gearside is away from you.6. Lower the green lever until

9. Lower the green lever assembly and close the ADF cover.10. Plug in the all-in-one, and then turn it on.46 Chapter 3 Maintenance ENWW

Cleaning the paper pathDuring the printing process, paper, toner, and dust particles can accumulate inside the all-in-one. Overtime, this buildup can

To clean the paper path from the all-in-one control panelIf you do not have access to HP ToolboxFX, you can print and use a cleaning page from the all

Calibrating the scannerThe scanner calibrates itself automatically at the start of scan of copy jobs. Normally, you do not needto initiate the calibra

Fax logs and reports ... 52HP ToolboxFX ...

Managing and maintaining the all-in-oneInformation pagesInformation pages reside within the all-in-one memory. These pages help you to diagnose and so

Configuration pageThe configuration page lists the current settings and properties of the all-in-one. To print the configurationpage from the all-in-o

7. Print Settings. This section contains information about all-in-one settings that are configured inthe printer driver or in HP ToolboxFX.8. Status L

HP ToolboxFXHP ToolboxFX is a Web-based program that you can use to complete the following tasks:●Check the all-in-one status.●Configure the all-in-on

StatusThe HP ToolboxFX Status tab contains links to the following main pages:●Device Status. View all-in-one status information. This page indicates a

FaxUse the HP ToolboxFX Fax tab to perform fax tasks from the computer. The Fax tab contains links tothe following main pages:●Fax Tasks. Perform such

can make changes to the name of the group directly in the phone book directory list by clicking theentry and typing the changes. Make sure that you do

Fax Send LogThe HP ToolboxFX Fax send log lists all recently sent faxes and information about them, including thedate and time sent, job number, fax n

System settingsThe HP ToolboxFX System Settings tab contains links to the following main pages:●Device information. Change the device information sett

Print qualityUse the HP ToolboxFX print-quality options to improve the appearance of print jobs.The four options provided for controlling print qualit

Printer (product base) functions ... 74Engine co

Device pollingYou can turn off HP ToolboxFX device polling to reduce network traffic, but you will also disable someHP ToolboxFX features: pop-up aler

Macintosh Configure Device (Mac OS X V10.3 and Mac OS X V10.4)Macintosh Configure Device is a Web-based program that provides access to information ab

Embedded Web serverNOTE The embedded Web server (EWS) is only available for the HP LaserJet 3052 all-in-oneand the HP LaserJet 3055 all-in-one when yo

4 Theory of operation●Basic operation●Formatter system●Printer (product base) functions●HP LaserJet 3050 all-in-one unique components●HP LaserJet 3052

Basic operationThis chapter presents a functional overview of the HP LaserJet 3050/3052/3055 all-in-one. The followingsystems are discussed: ●All-in-

Figure 4-1 All-in-one configurationSequence of operation The microprocessor (CPU) on the ECU controls the operation sequence of the all-in-one. The f

Sequence of operation, HP LaserJet 3052/3055 all-in-one scannerTable 4-2 HP LaserJet 3052/3055 all-in-one basic sequence of operationPeriod Purpose R

Period Purpose RemarksSCAN.For an ADF scan: From the end of thebrief pause that follows the STAGEperiod until the EJECT or following-pageSTAGE period.

Sequence of operation, HP LaserJet 3050/3052/3055 all-in-one printer (productbase)Table 4-3 HP LaserJet 3050/3052/3055 all-in-one basic sequence of o

HP LaserJet 3050/3052/3055 all-in-one timing diagram—printer (product base)1234567891011121314151617181920STBYWAITSTBYFixing Heater (H701)Print Comman

Electrostatic discharge ... 100Required tools ...

Formatter systemThe formatter coordinates the major systems. It is responsible for the following tasks or actions:●Formatting and controlling copies●R

Standard startup processWhen the all-in-one is unplugged or the power is off, the firmware code is stored on the formatter in twoblocks. The first blo

Control panelThe control panel consists of the following features:●Groups of buttons to control fax, copy, scan, and configuration functionality (only

PJL overview Printer job language (PJL) is an integral part of configuration, in addition to the standard printer commandlanguage (PCL). With standar

Printer (product base) functionsPrinting functions are divided into five groups:●Engine control●Formatter●Image formation●Laser/scanner●Pickup and fee

Engine control system (engine control unit and power-supplyassembly)The engine control system coordinates all print engine activities. The engine cont

Printer (product base) laser/scannerThe ECU sends signals to the laser/scanner assembly to modulate the laser-diode on and off modesand to drive the l

Power system on the power-supply assemblyThe power-supply assembly supplies the ac, dc, and high-voltage power-supply circuits.Ac power distributionTh

High-voltage power distributionThe high-voltage power supply applies an overlap of dc and ac voltage to the primary charging rollerand to the developi

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