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May 1998 Edition

HP LaserJet Family Quick Reference Service Guide

Volume II

HP LaserJet Family Quick Reference Service Guide

Volume II

Publication number 5021-8942

First edition, May 1998

Warranty

The information contained in this document is subject to change without notice.

Hewlett-Packard makes no warranty of any kind with respect to this information. HEWLETTPACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Hewlett-Packard shall not be liable for any direct, indirect, incidental, consequential, or other damage alleged in connection with the furnishing or use of this information.

Trademark credits

MS-DOS® is a U.S. registered trademark of Microsoft Corporation.

UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Limited.

Hewlett-Packard Company 11311 Chinden Boulevard Boise, Idaho 83714 U.S.A.

Contents

1 Control panel messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Error listings, descriptions, and recommended actions

2 Service mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

How to access Service mode and related functions

3 Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

DC voltages, test points, and tools

4 Input/Output (I/O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Printer interface and cabling information

5 Media specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Supported sizes and specifications for paper and special media

6 Toner cartridge information. . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Cartridge weights, capacities, and potential service issues

7 Printer options and replaceable parts. . . . . . . . . . . . . . . . . . 101

Support matrix and part numbers for accessories

8 Printer parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Selected high-usage replacement parts

9 Image quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Image defect samples, suspect causes, and remedies

10 Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Main wiring schematics

11 Services and support/resources and training . . . . . . . . . . . 173

How and where to get training, support, and materials

12 Hewlett-Packard LaserJet Companion . . . . . . . . . . . . . . . . . 179

HP LaserJet information and specifications

A Acronyms and abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . 183

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

iii

Ordering other manuals

The HP LaserJet Quick Reference Service Guide

support for newer monochrome printers (see the following page for a complete list of supported printers). It has been created to help the HP LaserJet service engineer quickly troubleshoot common printer problems.

For older monochrome printers, see the

Service Guide,

LJ 6L, LJ 5Si Mopier, LJ 5Si, LJ 5Si MX, LJ 5L, LJ 6P, LJ 6MP, LJ 5P, LJ 5MP, LJ 5, LJ 5M, LJ 5N, LJ 4V, LJ 4MV, LJ 4P, LJ 4MP, LJ 4L, LJ 4ML, LJ 4+, LJ 4M+, LJ4, LJ 4M, LJ 4Si, LJ 4Si MX, LJ IIISi, LJ IIIP, LJ IIP+, LJ IIP, LJ IIID, LJ III, LJ IID, LJ II, LJ 2686D, LJ 2686A.

While the quick reference guides are intended to provide all the information the service engineer will need for on-site repair of HP products, they are not intended to replace the service manual for any HP LaserJet product. For detailed information about the HP LaserJet products described in this guide, see the user guide or service manual for that product.

Service manuals for HP LaserJet products are available from Hewlett-Packard. The phone number for the Service Parts Order Desk is:

Volume I. It provides support for the following printers:

HP LaserJet Quick Reference

, Volume II, provides

(800) 227-8164 (U.S. only)

If you are located outside of the U.S., contact your local HP Sales and Service office.

Supported products

Reference name used in this guide

LJ 4000/4000T 4000N/4000TN

LJ Companion LJ C3989A/

LJ 5000/5000N/ 5000GN

LJ 3100 C3948A 6K C3948-90958 LJ8000/8000N/

8000DN LJ Mopier 240 C4228A 130K C4085-91017

Model number

C4118A/C4119A/ C4120A/C4121A

C3979A/C4106A C4110A/C4111A/

C4112A

C4085A/C4086A/ C4087A

Maximum pages per month

65K C4118-99024

N/A HP Central

65K C4110-91033

130K C4085-91017

Service Manual part number

Repair Only

Note

This guide will be updated on a regular basis as the service needs change, as new products are introduced, and as information becomes available.

Control panel

messages

Overview

This chapter provides a list of printer control panel messages. Alphabetical messages are listed first, followed by numerical messages. Control panel messages that are self-explanatory are not included. If you need more detailed information, see the service manual for the printer.

Chapter 1 –

Alphabetical messages

(number) is a group, group not allowed

• Enter a different one-touch key or an unassigned speed-dial code.

Access denied, menus locked

• Ask the network administrator to unlock the function.

Already in group

• While programming a group-dial code, a fax number has been

added that is already in the group. – Add the next fax number to the group.

Bad duplexer connection

• Re-install the duplexer.

• If the message persists, make sure that the duplexer is connected

and that the connector is not damaged.

• Replace the duplexer.

Bad opt tray connection

• Re-install the optional tray.

• Make sure that the optional tray is connected and that the connector

is not damaged.

• Replace the optional tray.

8 – Control panel messages

Blacklisted (France only)

• The attempted fax number has received a voice answer or no

answer, was busy on the first dial and redials, or was busy with redials pending.

– Unplug the power cord for the fax machine from the power strip

or outlet, and then plug it back in.

Busy

• Check the fax number and try resending the fax. If the message

appears again, try sending to another fax machine or try again later.

Cancel group edit,

• Back space was pressed while in a group-dial code in the Group

Dial Setup level of the menu.

1 2

Press Press

(Press Press

to return to the group-dial code and continue editing.

[Start]

[Enter/Menu]

[Stop/Clear]

ENTER

to go to the Group Dial Setup level of the menu.

again to choose a different group-dial code.)

to exit the Menu settings.

Check finisher device

• Check to see if paper is jammed in the external paper-handling

finishing device.

Check finisher device

to confirm

alternates with

Clear jam

Finisher align

error

• Check to see if an alignment error has occurred in the external

paper-handling finishing device.

Chapter 1 –

Check input device

alternates with

Paper path open,

please close it

• Check the doors and trays.

• Check the tabs and sensor levers in the tray for proper operation.

– Replace any defective tabs or sensors.

• Replace the printed-circuit assembly (PCA) controller in the feeder.

Check output device

alternates with

Close output

delivery path

• Make sure the paper path is closed between the printer and the

external paper-handling output device.

Chosen language not available

1 Print the job using a driver for a different printer language, or add the

requested language to the printer (if available).

2 Press [Go] to continue.

Clear document from scanner

• Check to see if the document is jammed or if multiple sheets of the

document were loaded.

• Check the special media lever. It should be to the left for regular-

weight items or to the right for thick items. Thick items must be fed one at a time.

• Check the control panel configuration for outgoing faxes, including

the “send long pages” setting.

10 – Control panel messages

Close top cover

• Check SW101 for proper operation. Verify that the wires are

connected.

• If necessary, replace SW101.

– If the new switch does not solve the error, the wiring or the

engine controller board may be defective.

Communication error

Try resending the fax.

If the call fails again, check that the telephone cord is securely

connected. Then check for a dial tone on the phone line by pressing

[Manual Dial]

Wait; try resending the fax later.

Note

For additional details, see the

Manual

HP LaserJet 3100 Product Service

Configuration err # (number 1-4)

• An error was detected in the static random-access memory (SRAM).

– Unplug the power cord from the power source, wait 10 seconds,

and replug the power cord.

• If the error persists, replace the formatter.

Config. stuck addr

• In Service mode only, SRAM stuck address test.

– Unplug the power cord from the power source, wait 10 seconds,

and replug the power cord.

• If the error persists, replace the formatter.

Chapter 1 –

Config. tied addr.

• In Service mode only, SRAM tied address test.

– Unplug the power cord from the power source, wait 10 seconds,

and replug the power cord.

• If the error persists, replace the formatter.

[Date] [Time]

• The battery has failed. You can continue to use the HP LaserJet

3100 product without replacing the battery, but if you re-enter the Menu settings and then turn off the power, the settings are erased again.

Decoding error # (number 1-3)

• Unplug the power cord from the power source, wait 10 seconds , and

replug the power cord.

• If the error persists, replace the formatter.

Disk device failure

• Reseat the enhanced input/output (EIO) disk or replace the old disk

device with a new disk.

Disk file operation failed

• Check the filename and directory name.

• Reattempt the operation.

Disk file system is full

• Delete the files from the EIO disk and then try again, or add a Flash

dual inline memory module (DIMM).

• Download or delete files from the HP JetAdmin software, and

download or delete fonts from the HP FontSmart software.

12 – Control panel messages

Disk is write protected

• Use the HP JetAdmin software to disable the write protection.

Documents were lost, START to continue

Press

Check the fax log status column for the “Fax Document was Lost”

message. Resend the associated outgoing faxes. Ask the sender to resend

incoming faxes.

. A report is printed.

[Start]

Duplex error, check duplexer

• Check the duplexer for a paper jam.

• Reseat the duplex assembly, and check the connection.

• Replace the Duplex unit.

EIO x disk initializing

• Stand by until the EIO disk is done initializing.

EIO x disk spinning up

• Stand by until the disk accessory card is done initializing.

EIO disk x non-functional

• Replace the EIO disk.

Encoding error

• Unplug the power cord from the power source, wait 10 seconds , and

replug the power cord.

• If the error persists, replace the formatter

Chapter 1 –

Envelope feeder load

1 Load the requested envelope type and size into the en v elope feeder. 2 Make sure that the envelope size and type are set correctly on the

Paper-Handling menu in the printer control panel.

3 Press [Go] if the envelope is already loaded in the feeder. 4 Press [-Value+] to scroll through the available types and sizes.

Errors likely in pages: (page range)

• Resend the fax or ask the sender to resend the fax to you.

Fax document was lost

• If you set up faxes to be sent at a future time or to be polled, print a

fax log to identify which faxes were lost. Then re-enter the faxes.

• Fax es that were received to memory (instead of printing) have been

lost. Ask the sender to resend the fax.

Fax memory error # (number 1-5)

• Unplug the power cord from the power source, wait 10 seconds , and

replug the power cord.

• If you set up faxes to be sent at a future time or to be polled, print a

fax log to identify which fax es may ha ve been lost. Then, re-enter the faxes.

• Fax es that were received to memory (instead of printing) have been

lost. Ask the sender to resend the fax.

• If the error persists, replace the formatter.

Flash device failure

• Remove the Flash DIMM and replace it with a new one.

14 – Control panel messages

Flash file operation failed

• Check the filename and directory name.

• Reattempt the operation.

Flash file system is full

• Delete files from the Flash DIMM or add another DIMM.

• Download or delete files from the HP JetAdmin software, and

download or delete fonts from the HP FontSmart software.

Flash is write protected

• Use the HP JetAdmin software to disable the write protection.

Group is empty, use ONE-TOUCH/SPEED DIAL

Begin adding fax numbers to the group-dial code by pressing the

one-touch key for each number or by pressing Enter the speed-dial code for the fax number.

2 3

Press

[Enter/Menu]

[Speed Dial]

Initializing

• Reseat the DIMM(s).

Chapter 1 –

Input device condition xx.yy

1st x = Device number in chain. 2nd x = Device type (3 types):

1 = Input 2 = Output 3 = Stapler/stacker unit

yy = Device specific error.

• See the documentation that came with the paper-handling device.

Input limit reached

• The maximum number of fax numbers that can be added to an

ad-hoc group is 100. Resend the fax, but only to 100 or fewer fax numbers.

Install front duplex cover

• Re-insert the duplexer’s front cover.

Install tray x

• Re-insert the specified tray.

• Check for damaged tabs in the tray.

• Check for damaged switches in the printer.

• Replace the PCA controller in the feeder.

Invalid date or time

• Re-enter the date and time.

16 – Control panel messages

Keypad test failed

• Run the keypad test again.

• If the error persists, try each of the following in the order given:

– Check the cabling. – Replace the control panel. – Replace the formatter.

Loading program <number>

alternates with

Do not

power off

• Wait for the program to load.

Long page? START to continue

• Press

seconds, the message disappears and the document scanner stops scanning because it thinks the page has jammed.

• If sending a fax or copying a document longer than 991 mm (39 in),

the control panel configuration can also be set to “Send long pages.” This ensures that long pages feed without having to monitor the task. Press

to continue scanning. If

[Start]

before the document scanner shuts off.

[Start]

is not pressed within 3

[Start]

Manually feed [type] [size]

Load the requested paper into Tray 1.

1 2 3 4

Press Press Press

if the appropriate paper is already loaded in Tray 1.

[Go]

[-Value+]

[Select]

to scroll through the available types and sizes.

to accept the alternate type or size.

Memory full - send unscanned pages

• Reload the unscanned pages and re-send them to finish the fax job.

• Scan the unscanned pages to the computer and fax them from the

computer.

Chapter 1 –

Memory full - stored data lost

• Add more memory to the printer or simplify the print job.

Memory is full

• This message should clear automatically when the next task starts

(for example, when you start a copy or receive a fax).

Memory settings changed

• Try changing the memory settings for I/O Buffering and Resource

Saving (although default settings are usually best).

• Install additional memory in the printer.

Memory shortage job cleared

• Press [Go] to continue.

• On the printer control panel, change the setting for resource saving,

or add more memory to the printer.

Memory shortage page simplified

• Press [Go] to continue.

• Add more memory to the printer.

Modem error # (number 1-3)

• Unplug the power cord from the power source, wait 10 seconds , and

replug the power cord.

• If the error persists, try each of the following in the order given:

– Check the cabling. – Replace the LIU. – Replace the formatter.

18 – Control panel messages

No answer

• Check the fax number and try resending the fax. If the message

appears again, try sending to another fax machine or try again later.

No dial tone

• Check that the telephone cord is securely connected.

• Check for a dial tone on the phone line by pressing

• If necessary, check the wall outlet by plugging in a phone and

attempting to place a call.

[Manual Dial]

No fax in (number) tries

• Check the fax number and try resending the fax. If the message

appears again, try sending to another fax machine or try again later.

No fax pages in memory to reprint

• Wait for a fax. As soon as a fax is in the memory, the fax will reprint.

No memory for report, erase/print document

• Print all faxes that have been received in memory.

• If you have several faxes set up to be sent at a future time or to be

polled, use job status to clear them.

No modem installed

• There is a problem with the line interface unit (LIU).

– Unplug the power cord from the power source, wait 10 seconds,

and replug in the power cord.

• If the problem persists, replace the LIU.

• If the problem persists, replace the formatter.

Chapter 1 –

No room in fax log

• The fax log was unable to print because of an error, such as out-of-

paper. – Load paper in the paper input bin so the HP LaserJet 3100

product can print the log.

Not enough memory

• T ry resending the job . If the error persists, try reducing the amount of

activity on the HP LaserJet product. Cancel jobs in memory before resending the job.

Out of memory -- switching to ONE COPY

• The HP LaserJet product continues to copy, but only one copy is

output. – Divide the copy job into smaller sections and then try copying

again.

– If you are collating the job, turn the collation feature off, make

only one copy of the document at a time, or see the user guide for instructions about using the Document Assistant.

Output bin full

alternates with

Clear paper from [bin

name]

1 Remove the media from the face-down tray. 2 Check PS1401 on the sensor PCA. 3 Make sure the sensor flag moves freely.

20 – Control panel messages

Paper bin is empty, please add paper

Load paper.

If paper is already loaded, remove it.

Check for, remove, and discard any jammed sheets.

Reload the paper.

Password must be 4 digits

• Re-enter a four-digit password.

Paused (memory full)

• Reduce activity on the HP LaserJet product, or wait for other jobs to

finish so memory will be freed.

• If faxes are set up to be polled or sent at a future time, y ou ma y want

to cancel these jobs to free memory.

Perform printer maintenance

Reset the maintenance page count only after a maintenance kit has been installed. Resetting the maintenance page count causes

PRINTER MAINTENANCE

series), 200,000 (LJ 4000 series), or 350,000 (LJ 8000) pages have printed.

Hold down the

Turn the printer on.

Wait until

both keys.

RESET MAINTENANCE COUNT

to appear after another 150,000 (LJ 5000

[Item-]

and

[Value-]

keys.

appears, and then release

PERFORM

Chapter 1 –

PC print timed out

• Let the “print jobs retry” continue for 5 minutes. If the HP LaserJet

3100 product still does not print, resend the print job.

Phone number error

• The maximum number of characters that can be entered is 40. If you

have a number longer than 40 characters, break the number into smaller chunks.

1 Enter the first part of the number, and press [Redial/Pause] as the

last character in the first number.

2 Enter the second part of the number as if it were a second number

going to a group. When the product dials, it will treat both numbers as if they are one.

Polling-in error

• Make sure that the sender’s fax machine is ready to be polled, and

check the fax number. Then set up to poll again.

Printer comm error^1

• Check that the parallel cable is securely connected between the

HP LaserJet 3100 product and the computer.

• If the problem persists, unplug the power cord from the power

source for 5 seconds, and then replug it.

• If the problems persists, replace the formatter.

Printer cover open or no cartridge

• Verify that the printer door is closed.

• Check the toner cartridge for proper installation.

22 – Control panel messages

Printer fixing error, replace fixing unit

• There is an error with the print engine.

• Check the cabling to the heating element.

• If the problem persists, replace the heating element.

• If the problem persists, replace the ECU.

Printer is busy

• No action is needed. If you already started another job, the job will

be completed when the HP LaserJet product becomes available.

Printer laser error, call for service

• Open and reclose the printer door.

• Unplug the power cord from the power source, wait 10 seconds , and

replug the power cord.

• If the problem persists, replace the laser scanner assembly.

Printer motor error, call for service

• A problem has occurred with the print engine.

– Unplug the power cord from the power source, wait 10 seconds,

and replug the power cord. – If the problem persists, replace the motor. – If the problem persists, replace the ECU.

Printer paper jam, check paper path

• Check the input areas, the output areas, and the interior for the jam,

and then clear the jam. The job should continue to print. If it does not, try reprinting the job.

Chapter 1 –

Printer signal error

• Open and reclose the printer door.

• Unplug the power cord from the power source, wait 10 seconds , and

replug the power cord.

• If the problem persists, replace the laser scanner assembly.

Processing job from Tray x

• Check the tray selected and the type settings . If the printer does not

respond after you press the control panel keys, turn the printer off, and then turn the printer on to clear the message.

• If paper is loaded when the printer is in Power Save mode, it might

not be recognized. Open and close the affected source when the printer is in Ready mode.

RAM disk device failure

• Turn the printer off and on to clear the message.

• If the message persists, install a new RAM disk.

RAM disk file operation failed

• Check the filename and directory name.

• Reattempt the operation.

24 – Control panel messages

RAM disk file system is full

• Delete files and then try again, or turn the printer off and then turn

the printer on to delete all files on the device. (Use HP JetAdmin software, HP FontSmart software, or another software utility to delete files.)

• If the message persists, increase the size of the RAM disk.

– Change the RAM disk size from the Configuration menu in the

printer control panel.

RAM disk is write protected

• Use HP JetAdmin software to disable the write protection.

Received error

• Ask the sender to resend the fax.

Redial failed

• Try resending the fax. If the fax still fails to transmit, call the recipient

to check that the fax machine is on and working and to verify the fax number.

Remote fax was busy

• Try resending the fax. If the fax still fails to transmit, call the recipient

to check that the fax machine is on is on and working and to verify the fax number.

Scan reference error

• Recalibrate the document scanner.

• If the problem persists, replace the CIS.

Chapter 1 –

Scanner error #1

• An error has occurred within the SRAM.

• Press and hold down the [Stop/Clear] key for 7 seconds to reset the

product.

• If the error persists, unplug the power cord from its power source for

10 seconds, and then replug it.

• If the error persists, replace the CIS.

• If the error persists, replace the formatter.

Scanner isn’t available

• The document scanner mechanism is in use.

– Wait until the document scanner has finished the current job

before sending the next job.

Scanner jam - reload

• Pull open the document release door and then remove the jammed

document.

Speed dial (number) is not assigned

• Choose a speed-dial code that has already been assigned a fax

number.

System error

• Unplug the power cord from the power source, wait 10 seconds , and

replug the power cord.

• If the message is still displayed, replace the formatter.

26 – Control panel messages

There are no documents in memory

• No action is required. There are no faxes to retrieve.

Tray x empty

• Load the empty tray (

• Inspect the tray for damaged tabs.

• Check the sensor-arm flags for damage. Be sure the flags can mov e

freely .

• Replace any defective sensors.

) to clear the message.

Tray x lifting

• Verify that the media can be pulled from another tray.

• Replace the paper input unit.

Tray x load

Load the requested paper into the specified tray (

trays are correctly adjusted for size. Press

Press

Inspect the switches in the tray.

Remove the tray, and then turn the printer on. Push the switches by

hand to see if the switches register.

to print from the next available tray.

[Go]

[-Value+]

[Select]

to scroll through the available types and sizes.

to accept the alternate type or size.

). Ensure that the

Chapter 1 –

Unrecognized format

• When printing, the incorrect printer driver was selected or an error

occurred on the parallel interface.

1 After selecting the Print command in the software application you

are using, select the HP LaserJet 3100 as the printer.

2 Reprint the job.

Unsuccessful call

• Check the fax number and try resending the fax.

• If the message appears again, try sending to another fax machine or

try again later.

Unsupported size in tray [yy]

• Load a supported paper size in the tray.

Use [type] [size] instead?

1 Press [-Value+] to scroll through the available types and sizes. 2 Press [Select] to accept the alternate type or size.

28 – Control panel messages

Numerical messages

XX.YY printer error, press GO to continue

Press

on the printer control panel to clear the error message.

[Go]

13 Paper jam

• Remove the jammed paper from the specified location. Check the

entire paper path for other pieces of paper.

• Open and close the top cover to clear the message.

• Check sensors and flags in the paper path for proper operation.

13.1 Paper delay jam at paper feed area

13.2 Paper stopped jam at paper feed area

• Ensure that the paper trays are loaded properly so that paper can

feed from the trays.

• Check the input area for obstructions such as paper in the paper

path or damage to the registration assembly.

• Verify that the transfer roller is positioned correctly.

• Check PS 102 and PS 103 (4000 series) and PS 402 and PS 403

(5000 series) for proper operation. – Replace any defective sensors or flags.

Chapter 1 –

13.5 Paper delay jam at fuser

13.6 Paper stopped jam at fuser

• Check the transfer roller and small media belt to ensure that the

roller and belt are operating and can feed the paper.

• Check the paper path for obstructions at the transfer roller, toner

cartridge, paper feed guide, and fuser.

• Check PS 501 and PS 106 (4000 series), PS 1307 (5000 series), or

PS 1403 (8000 series) for proper operation. Replace any defective sensors or flags.

13.9 Check left door

• Inspect the path between the fuser and delivery assemblies.

• Check the diverter assembly.

13.10 Paper delay jam at paper reversing area/ duplexer

• Check the duplexer and the rear area of the printer for obstructions

or damage.

• In the duplexer, check PS 701 and PS 703 for proper operation.

• Replace the duplexer if a sensor is defective.

13.11 Paper jam

• Check the entire paper path.

• Reseat the duplexer.

• Try the Paper Path Test.

• Replace the duplexer.

30 – Control panel messages

13.11 Paper jam in input device

Open the vertical transfer unit (VTU) and remove the media.

Verify that the entry or exit sensor can move freely.

If the problem persists, open the VTU and override its Open Door

sensor, perform a Paper Path test from the 2,000-sheet Input Tray (or 2x500-sheet Input Tray), and make sure the feed rollers are advancing the paper.

– If the rollers do not rotate, verify the connections at the main

drive assembly, pickup assembly, controller PCA, and power supply. If the rollers still do not rotate or do not drop down, replace the pickup assembly.

– If the rollers rotate and drop down without advancing the paper,

replace the feed rollers using the maintenance kit.

– If the problem persists, replace the VTU.

13.12 Paper jam

• Check the paper path between the fuser and duplex assembly.

• Reseat the duplexer.

• Replace the duplexer.

13.13 Paper jam

• Check the entire paper path.

• Remove the duplex assembly and look for paper in the side of the

assembly. – Retest.

• Replace the duplexer.

Chapter 1 –

13.20 Paper jam

• Check the paper path for obstructions.

• Check that all assemblies are seated and all doors are closed.

• Check all sensors and flags in the paper path.

13.21 Door open jam

• Check that all assemblies are seated and all doors are closed.

• Check all sensors and flags in the paper path.

13.22 Paper jam in output device

• Open the flipper jam access door and remove the media.

• Make sure the sensor flag moves freely.

• Make sure that the flipper shaft is in place.

• If the problem persists, replace the flipper assembly.

• If the problem persists, replace the mailbox controller PCA.

20 Insufficient memory

alternates with

Press GO to

continue

• Press [Go] to print the transferred data (some data might be lost);

then simplify the print job or install additional memory.

32 – Control panel messages

21 Page too complex

• Press

• To print the job without losing data, select Page Protect=on from the

Configuration menu in the printer control panel and then print the job. Afterward, return to Page Protect=auto. Do not leave Page Protect=on; doing so could degrade performance.

• If this message appears often, simplify the print job or install

additional memory.

to print the transferred data. (Some data could be lost).

[Go]

22 EIO x buffer overflow

alternates with

Press GO to

continue (too much data sent to EIO card)

• Press

to clear the message. (Data will be lost.)

[Go]

22 Parallel I/O buffer overflow (too much data sent to parallel port)

• Check for a loose cable connection. Use a high-quality IEEE-1284

cable.

• Press

22 Serial I/O buffer overflow

to clear the error message. (Data will be lost.)

[Go]

alternates with

Press GO

to continue (too much data sent to the serial port)

• Verify that the correct option for serial pacing is selected on the I/O

menu.

• Print a Menu Map and verify that the serial pacing item (from the

I/O Menu on the printer control panel) matches the setting on the computer.

• Press

to clear the error message. (Data will be lost.)

[Go]

Chapter 1 –

40 Bad serial transmission (data transfer error)

• Verify cable connections.

• Verify that the printer serial configuration is set the same as the

computer. – Access the serial baud rate setting from the I/O Menu on the

printer control panel.

• Press [Go] to clear the error message and continue printing.

40 EIO x bad transmission (connection between printer and EIO card broken)

x = Description 1 = EIO slot 1 2 = EIO slot 2

• Turn the printer off and reseat the card.

• Press [Go] to clear the error message and continue printing.

41.3 Unexpected paper size

• Verify that all trays are adjusted correctly for size. (The printer

attempts to print the job until size settings are correct.)

• If you are trying to print from Tray 1, make sure that the paper-size

setting in the printer control panel is configured correctly.

• If you are trying to print from the optional 500-sheet tray, be sure to

set the paper-size dial to match the paper size loaded in the tray.

• Press [Go]. The page containing the error is automatically reprinted.

(Or, press [Cancel Job] to clear the job from the printer’s memory.)

34 – Control panel messages

41.x Printer error

alternates with

Press GO to

continue

• A temporary printing error occurred.

x = Description 1 = Unknown misprint error 2 = Beam detect error 4 = No VSYNC error 5 = Media feed error 9 = Noise VSREQ error

• Press

the error persists, try the following procedures: – Reseat the connections to the laser scanner and the engine

– Replace the laser scanner. – Replace the engine controller board.

. The page containing the error reprints automatically. If

[Go]

controller board.

50.x Fuser error

x = Description 1 = Low fuser temperature 2 = Fuser warm-up service 3 = High fuser temperature 4 = Faulty fuser 5 = Inconsistent fuser Turn the printer off, wait 20 minutes, and then turn the printer on.

If the message persists, reseat the fuser.

If the message persists, replace the fuser.

Chapter 1 –

51.x Printer error (loss of beam detect)

x = Description 1 = Beam detect error 2 = Laser error

• Press [Go]. The page containing the error reprints automatically.

• Turn the printer off and then on.

• Reseat the cables.

• Replace the laser scanner.

52.x Printer error (the laser scanner speed is incorrect)

x = Description 1 = Scanner startup error 2 = Scanner rotation error

• Press [Go]. The page containing the error reprints automatically.

• Turn the printer off and then on.

• Reseat the cables.

• Replace the laser scanner.

53.xy.zz Printer memory error with an accessory

The DIMM that caused the error will not be used.

x = DIMM type 0 = read only memory (ROM) 1 = random access memory (RAM) y = Device location 0 = Internal memory (ROM or RAM) 1 to 3 = DIMM slots 1, 2, or 3

zz = Error number

36 – Control panel messages

0 = Unsupported memory 1 = Unrecognized memory 2 = Unsupported memory size 3 = Failed RAM test 4 = Exceeded maximum RAM size 5 = Exceeded maximum ROM size 6 = Invalid DIMM speed 7 = DIMM reporting information incorrectly 8 = DIMM RAM parity error 9 = ROM needs to be mapped to an unsupported address 10 = DIMM address conflict 11 = PDC XROM out of bounds 12 = Unable to make a temporary mapping

• Turn the printer off, and reseat or replace the specified DIMM.

• Try the DIMM in another slot.

• Replace the DIMM that caused the error.

55 Printer error

alternates with

Press GO to continue

(internal communications problem)

• Press

• Check the power at the site.

• Replace the formatter PCA.

• Replace the DC controller.

• Replace the engine controller board.

. The page containing the error reprints automatically.

[Go]

Chapter 1 –

56.x Printer error

alternates with

Cycle Power to

continue

x = Description 1 = Illegal input 2 = Illegal output

• Press [Go]. The page containing the error reprints automatically.

• Turn the printer off and on.

• Check the printer’s configuration.

57.x Printer Error

x = Description 4 = Printer fan 7 = Duplex fan

• Check the fan’s connector and verify that the fan is not blocked.

• Replace the fan.

59.x Printer error

x = Description 0 = Motor error 1 = Motor startup error 2 = Motor rotation error

• Turn the printer off and then on.

• Make sure that the fuser or toner cartridge is not hindering gear

movement in the drive train.

• Verify that the cable in the main motor is seated properly.

• If the error persists, replace the motor.

38 – Control panel messages

62.x Printer error (printer memory)

x = Location of problem 0 = Internal memory 1 to 3 = DIMM slots 1, 2, or 3

• Reseat or replace the specified DIMM.

64.x Printer error (scan buffer)

• Turn the printer off and then on.

• If the message persists, replace the formatter.

66 Error (external paper-handling device)

First x = Device number in chain Second x = Device type (3 types): 1 = Input 2 = Output 3 = Stapler/stacker unit yy = Device-specific error

• Press

• Turn the printer off and then on.

• Check all of the cables.

• Reseat the external paper-handling device.

to clear the message.

[Go]

Chapter 1 –

66.11 Input device failure

• Verify that the lifting plate lifts up freely by hand.

• Verify that the paper size plates are installed correctly and are not

bent.

• Check the pickup roller for proper installation.

• Check the pickup assembly and replace if necessary.

• Replace Tray 4.

66.xx.yy Input device failure

alternates with

Check

cables and cycle power

• Check for an error in an external paper-handling device.

1st x = Device number in chain 2nd x = Device type (3 types):

1 = Input 2 = Output 3 = Stapler/stacker unit

yy = Device specific error

• Press [Go] to clear the message.

• Turn the printer off, and then turn the printer on.

• Reseat the external paper-handling device.

68 NVRAM full check settings

• Print a configuration page and check the printer settings to

determine which values have changed.

• Hold down [Cancel Job] while turning the printer on.

40 – Control panel messages

69.x Printer error

x = Description 0 = The duplex mechanism has failed. 1 = The duplex side adjust has failed.

• Turn the printer off, and then turn the printer on.

• Reseat the duplexer.

79.xxxx Error (printing)

The printer detected an error. The numbers (xxxx) indicate the specific type of error.

• Turn the printer off and then on.

• Try printing a job from a different software application. If the job

prints, go back to the first application and try printing a different file. (If the message appears only with a certain software application or print job, the customer should contact the software vendor for assistance.)

If the message persists, try the following procedures:

• Turn the printer off and then on.

• Reseat or replace the interface cable and power cycle the printer.

• Remove the DIMMs one at a time and power cycle the printer.

• If possible, use the parallel interface.

• With the EIO cards removed from the printer, perform a cold reset.

• If the error persists, replace the formatter.

Chapter 1 –

8x.yyyy critical error (EIO accessory)

• The EIO accessory in slot x has encountered a critical error as

specified by yyyy. x = Description 1 = EIO slot 1 -The printer detected an error with the EIO card. 2 = EIO slot 2 -The printer detected an error with the EIO card. 6 = EIO slot 1 -The EIO card detected an error.

The EIO card may be defective. 7 = EIO slot 2 -The EIO card detected an error.

The EIO card may be defective.

• Turn the printer off, and then turn the printer on.

• Reseat or replace the EIO board.

42 – Control panel messages

Overview

Service mode allows service personnel to verify and manipulate internal printer settings and to access the diagnostic feature. Service mode should be used only by authorized service personnel.

Service mode

Chapter 2 –

Service mode tasks

You can perform the following tasks while in Service mode.

• Verify the page count.

• Set the page count.

• Set the maintenance count.

• Verify and set the serial number.

• Set the cold reset default. This sets the factory default paper size to

either Letter or A4.

• Turn the diagnostic function on or off (for software developer’s use

only).

• Clear the event log.

• Use the extended Service mode.

• Reset softswitches.

• Perform a firmware download.

• Recalibrate the document scanner.

• Set the interval at which the PERFORM PRINTER MAINTENANCE

message appears on the control panel.

44 – Service mode

Accessing Service mode

4000, 5000, and 8000 series only

Use the following procedure to access Service mode.

Turn the printer off.

Press

printer on. Hold the keys down until all lights are illuminated. (If the control panel reads soon.)

Press the right side of the

SERVICE MODE

To exit Service mode, press

[Select]

and

[Cancel Job]

INITIALIZING

appears.

simultaneously while turning the

, the keys were released too

key, and then press

[Menu]

[Go]

[Select]

Accessing Service mode

3100 only

Use the following procedure to access Service mode.

Press

1 2

See the display for further instructions. Notes about some of the menu choices are provided in the Extended service menu tree on page 52.

[Backspace#**]

Use the service menu (see the Extended service menu tree, page 52) and press

and

[<]

[Enter/Menu]

to access the extended service menu.

keys to select the choices given in the extended

[>]

Chapter 2 –

Setting the page count

4000, 5000, and 8000 series only

The page count is stored in the printer’s non-volatile memory. If it is necessary to replace the formatter PCA, the page count should be set to the current value to reflect the age of the print engine. Use the following procedure to set the page count.

1 Before replacing the formatter PCA, print a Configuration Page to

verify the current page count and serial number of the printer, if possible. Use the information on the Configuration P age to reset the page count and serial number for the new formatter PCA.

Note

Press the right side of the [Menu] and [Item] buttons to increase the value (+). Press the left side of the [Menu] and [Item] buttons to decrease the value (-).

2 Press [Menu+] to display SERVICE MENU. 3 Press [Item+] to advance to the PAGES=XXXXXX display. XXXXXX

represents the page count currently stored in the non-volatile memory. The underlined character denotes the position of the cursor.

4 Press [Select] to advance the cursor one digit to the right. If the last

digit is currently selected, the cursor will move to the first digit when you press the [Select] key.

5 Press [Value+/-] to scroll the digit until the correct value is displayed

for the underlined digit. (Pressing [Value+] when 9 is the value of the currently selected digit changes the value of the digit to 0).

6 Press [Select] to enter numeric changes to the current digit and to

advance the cursor one digit to the right.

7 Press [Go] to exit the Service Menu.

46 – Service mode

Setting the maintenance count

4000 and 5000 series only

The maintenance count should be reset only after a maintenance kit has been installed. Resetting the maintenance count resets the maintenance counter so that the message

MAINTENANCE

(4000 series), or 350,000 (8000 series) pages are printed.

displays after another 150,000 (5000 series), 200,000

Note

MAINTENANCE COUNT

interval for when the next printer service is due for the printer. The maintenance count is set initially at the factory . Editing this number is similar to editing the

Hold down the

Turn the printer on.

Wait until

keys.

RESET MAINTENANCE COUNT

in the Service mode Menu sets the page count

item.

PAGES

and

[Item-]

[Value-]

PERFORM PRINTER

keys.

displays and then release both

Chapter 2 –

Setting the serial number

4000 and 5000 series only

Re-enter the serial number whenever you replace a formatter.

1 Press [Menu] to display the SERVICE MENU. 2 Press [Item+] three times. SERIAL NUMBER=XXXXXX displays. XXXXXX

represents the page count currently stored in the printer’s nonvolatile memory. The underlined character denotes the position of the cursor.

3 Press [Select] to advance the cursor one digit to the right. If the last

digit is currently selected, the cursor wraps around the first digit when you press the [Select] key.

4 Press [Value+/-] to scroll the digit until the correct value is displayed

for the underlined digit. (Pressing [Value+] when 9 is the value of the currently selected digit will change the value of the digit to 0).

5 Press [Select] to enter numeric changes to the current digit and to

advance the cursor one digit to the right.

6 Press [Go] to exit the Service Menu.

48 – Service mode

Setting the page count, maintenance count, and serial number

8000 series only

The page count, maintenance count, and printer serial numbers are stored in non-volatile memory . printed by the printer; preventive maintenance should be performed (every 350,000 images); and cover).

If it is necessary to replace the formatter PCA, these numbers should be set to the current values to accurately reflect the age of the print engine. The printer service manual provides the procedure for setting these values.

Before removing the old formatter PCA, print a configuration page to verify the current values, if possible.

is the printer serial number (also located on the printer back

S.N.

MAINTCOUNT

PAGECOUNT

Note

If it is not possible to print a configuration page, try to verify the values before replacing the formatter PCA by following steps 1 through 5, below.

After verifying the page count, maintenance count, and printer serial number from the old formatter PCA, replace it with the new PCA.

Enter Service mode. See “Service mode” in the printer service

manual for instructions. When

4 5

SERVICE MODE

Service Menu. Press

Maintenance Interval = Serial Number =

Enter the appropriate values for each item. Press

to display

[Items]

to exit Service mode.

[Go]

is displayed, press

Pages = Maintenance count =

is the total number of images

is the page count when the next

to access the

[Menu]

Chapter 2 –

Setting the default paper size used in a cold reset

4000, 5000, and 8000 series only

Cold reset clears all data from the printer memory and sets all defaults back to the factory setting.

The default paper size is stored in NVRAM. Whenev er the printer is cold reset, the default paper size is restored. The default paper size is set to the factory setting. Possible values are COLD RESET PAPER=LETTER and COLD RESET PAPER=A4. When replacing the formatter in countries that use the A4 paper size (in place of the letter- size paper), set the cold reset paper size to A4.

To customize the cold reset paper size: 1 Enter the Service mode. See “Service Mode in the printer service

manual for instructions.

2 Press [Menu] to display SERVICE MENU. 3 Press [Item+] until COLD RESET PAPER=LETTER* or A4 displays. 4 Press [Item+] to toggle between 5 Press [Select] to activate your choice. 6 Press [Go] to exit the Service Menu.

LETTER

and A4.

50 – Service mode

Diagnostics

4000, 5000, and 8000 series only

The diagnostics menu item enables or disables the use of the firmware diagnostic features. These features are accessible when

DIAGNOSTICS=ON

the printer is in the

displays. To access the diagnostic features, verify that

state and press

READY

[Select]

Note

This procedure is for software developers only.

Clear event log

Select this item to clear the internal event log.

Extended service menu

3100 only

Use the extended service menu to run various self-tests and to change softswitch settings, such as the country code softswitch setting.

The following page shows the layout of the extended service menu settings in a hierarchical diagram.

Chapter 2 –

Extended service menu tree

Reports

Memory/softswitch

Control panel

Scanner

Self test

Modem/PTT

Help T.30 protocol trace SRAM dump Scanner plots Log debug report Task stacks Translations Printer fonts

Softswitches Clear memory Check documents Edit SRAM SRAM dump Firmware version

Keypad test LCD test Control panel test Sensor states Speaker test All LCD characters

Scanner plots Scanner LED

ADF feed test

ADF motor test Do TWAIN scan White ref summary

Burn-in Individual diagnostics System reset

Modem tone Modem modulation Modem type

Help

prints a menu

report for the product.

See “To change the country code softswitch” on the following pages.

Various tests under

Control panel

assist in troubleshooting the product.

Scanner LED

contact image sensor light bar test.

ADF feed test

document feeder pickup rollers once.

ADF motor test

the document scanner motor.

Burn-in

after running the following tests: Program test, Configuration test #1, Fax memory test #2, Modem test #2, Scanner test #1, Scanner LED.

can

is the

runs the

runs

prints a report

52 – Service mode

Self-test in extended service mode

3100 only

If you perform a self-test from the extended Service Menu, the printed report will also show the firmware revision number and details.

Note

Print the internal reports before performing extended service mode tests. The reports contain a record of all settings and can assist you in restoring the product to its settings.

The table below lists the tests that are performed during a self-test and the actions to take when tests fail.

Extended service mode self-test failures

Test If the test fails, take these actions:

Configuration test #1 Fax memory test #1 Program test #1 Configuration test #2 Configuration test #3 Configuration test #4 Fax memory test #2 Fax memory test #3 Fax memory test #4 Fax memory test #5 Modem 1 test #1 Modem 1 test #2 Modem 1 test #3

Replace the formatter.

Cycle power by unplugging the power cord

from the power source, waiting 10 seconds, and replugging the power cord.

If the test fails again, clear all memory (see

the extended service menu tree, page 52). If the test fails again, replace the formatter.

Chapter 2 –

Extended service mode self-test failures

Test If the test fails, take these actions:

Modem 1 dial tone detect

Scanner test #1

Make sure that the telephone cable is plugged into the correct connector on the product and that the telephone line is operational (use a telephone to test the line).

If the test fails again, check the configuration settings in the control panel.

If the test fails again, replace the LIU.

This test fails under normal conditions if the document scanner is busy. If the document scanner is not busy:

Cycle power by unplugging the power cord from the power source, waiting 10 seconds, and replugging in the power cord.

If the test fails again, clear all memory (see the extended service menu tree).

If the test fails again, replace the formatter.

54 – Service mode

Other tests in extended service mode

3100 only

The following charts shows tests that can be performed in extended service mode and provides a brief explanation of each test:

Extended service mode tests

Test Explanation

Keypad test

LCD test Control panel test Sensor states

All LCD characters

Scanner plots Scanner LED

ADF feed test ADF motor test Individual

diagnostics Modem tone

Modem modulation

Tests that all keys are functioning (by pressing the keys in sequence)

Tests the control panel display Tests the control panel lights Shows current detector activation levels. Detector 1

and detector 2 are paper-size detectors. The control panel display shows the percentage of time each detector is activated

Scrolls through the full list of control panel display characters

Tests and recalibrates the document scanner After selecting this menu item, lift the document

release door and verify that all of the LEDs in the contact image sensor are lit.

Runs the document scanner pickup rollers once Runs the document scanner motor Run individual tests from the self-test sequence (see

the extended service mode self-test failures table). Generates tones with various frequencies from

300 Hz to 2425 Hz Generates various fax identification signals

Chapter 2 –

Reports in extended service mode

3100 only

The following chart shows reports that can be printed from extended service mode and provides a brief explanation of each report.

Extended service mode reports

Report Explanation

T.30 protocol trace

SRAM dump

Scanner plots Log debug report

Task stacks Translations

Printer fonts Firmware version

(under “memory/ softswitch”)

White reference summary (under “scanner”)

Prints a report of the G3 protocol transmissions and receptions

Prints SRAM address values in an address range you select

Prints the calibration page Prints detailed fax and memory address information.

Fax information includes job number , start time used, fax ID, transmission type, pages, communication mode, and status.

Prints address locations of various tasks Prints text strings used in the display, beginning with

the number you select. These text strings are printed in the language currently in use by the product. Compare the numbers in this report to the numbers in an English report to translate non-English messages on the display.

Prints all characters of fonts available in memory Shows firmware revision information on the control

panel display

Displays average, minimum, and maximum white reference values

56 – Service mode

Clear memory in extended service mode

3100 only

CAUTION

Clearing memory clears all parameters, which can render the product illegal or inoperable. Print the internal reports before clearing memory in extended service mode. The reports contain a record of all settings and can assist you in restoring the product to its settings.

To perform a system reset, use extended service mode to choose

Memory/softswitch

and

keys to select the memory you want to clear:

[>]

•

Documents (and log)

all log information.

•

Phonebook

•

Configuration

report to their defaults.

•

Softswitches

•

Counters

printed. These page counts are printed at the end of the configuration report.

•

Everything

includes white reference curve, total page count, and serial number.

, and then choose

deletes all documents stored in memory and

deletes all numbers stored in the phonebook.

resets all menu settings printed in the configuration

resets all softswitches to their defaults.

resets all page counts except the total number of pages

deletes and resets all of the above. Information retained

Clear memory

. Use the

[<]

Chapter 2 –

Softswitches

3100 only

Note

Reset the country code softswitch whenever the formatter board is replaced or otherwise removed from the product, or when softswitches are reset to defaults.

Extended service mode allows you to change softswitches on the 3100 product. A softswitch is a set of eight bits. See the software service manual for a complete list of softswitches.

To change the country code softswitch

1 Press [Backspace], [#], [*], and [*], in sequence, to access the

extended service menu.

2 Press [<]or [>] until Memory/Softswitches appears below Service

on the control panel.

3 Press [Enter/Menu]. 4 If Softswitches does not appear below Memory/Softswitches on

the control panel, press [<] or [>] until it appears.

5 Press [Enter/Menu]. 6 Use the keypad to enter 101 (the “country code” softswitch). 7 Press [Enter/Menu]. 8 Use the keypad to enter the sequence that corresponds to the

country in which the product is used. (See the list on the following page.)

58 – Service mode

Country code softswitch sequences

Australia 00001011 (0B hex) Denmark 00001100 (0C hex) Finland 00001000 (08 hex) France 00000111 (07 hex) Germany 00000110 (06 hex) Ireland 00000010 (02 hex) Netherlands 00001101 (0D hex) Norway 00000101 (05 hex) Sweden 00000100 (04 hex) United Kingdom 00000001 (01 hex) United States 00000000 (00 hex) Canada 00101001 (29 hex)

9 10

Press Press

[Enter/Menu]

[Stop/Clear]

to complete the softswitch change.

The product will exit extended service mode within a few minutes.

Firmware download

3100 only

Newer versions of the firmware for the HP LaserJet 3100 product can be downloaded to the product.

To perform a firmware download

Restart the computer in MS-DOS

window). Press down and hold

Cycle power by unplugging the power cord from the power source,

[Stop/Clear]

and then replugging in the power cord. Type the following, substituting the current version of the firmware

for

XXX

Copy /b leonXXX.rom lpt1:

mode (do not use an MS-DOS

while performing step 3.

Chapter 2 –

Recalibrating the document scanner

3100 only

Recalibrate the document scanner if you notice that copies, items scanned to the computer, or faxes you send have black or white lines running through them.

To recalibrate the document scanner

1 Clean the HP LaserJet 3100 product before recalibrating it. (See

“Cleaning the HP LaserJet 3100 product” in the product service manual.)

2 On the control panel, press 3 Press [<] once to display Service and press 4 Use the [<] and [>] keys to select Scan Correction and press

[Enter/Menu]

5 Insert a blank, bright white piece of letter-sized paper into the

document feeder tray.

The HP LaserJet 3100 product pulls the piece of paper through and then prints a recalibration test page. Discard this page. The recalibration procedure is complete.

[Enter/Menu]

60 – Service mode

Overview

This chapter details the distribution of AC and DC power.

Power supply

Chapter 3 –

Distribution of AC and DC power for the LaserJet 4000 series

AC power is supplied to the low-voltage power supply circuit in the engine controller board when the power switch (SW 101) is turned on. The low-voltage power supply circuit supplies +24 V DC and +3.3 V DC to the printer. DC power drives the following items:

+24 VDC

• main motor

• scanner motor

• fan

• high-voltage power supply

+3.3 VDC

• sensors

• ICs on the engine controller board

• EIO accessories

62 – Power supply

Low-voltage power supply circuit (4000 series)

Chapter 3 –

Distribution of AC and DC power for the LaserJet 5000 series

The AC line voltage fo r the LaserJet 5000 printer is applied through the main switch (SW 101) and supplied to the low-voltage power supply circuit through the fuse (FU1). The low-voltage power supply divides the AC voltage to +24 VDC, +5 VDC and +3.4 VDC and supplies them to the DC controller PCA. This circuit generates a zero-cross signal (ZEROX) and supplies it to the DC controller PCA.

DC power is supplied as follows:

+3.4 VDC

• ICs on the DC controller PCA and the BD PCA

+5 VDC

• laser driver PCA

• sensors

+24 VDC

• high-voltage power supply PCA to drive the main motor

• exhaust fan

• scanner motor

• clutches

• solenoids

64 – Power supply

Low-voltage power supply circuit (5000 series)

Chapter 3 –

Distribution of AC and DC power for the HP LaserJet 3100

The AC, DC, and high-voltage power supply circuits are all contained within the ECU.

The AC power circuitry supplies AC voltage whene v er the po wer cord is connected to the AC power source. AC voltage is distributed to the DC power supply circuitry and to the AC driver circuitry. The AC driver circuitry controls AC voltage to the heating element in the fusing assembly.

The DC power distribution circuitry distributes +5 V DC and +12 V DC as follows:

+5 V DC

• formatter

• photosensors

• DC controller circuitry

• laser/beam detect circuitry

+12 V DC

• motor

• scanner motor

• solenoid

+12VA DC

• high-voltage power supply

66 – Power supply

Distribution of AC and DC power for the HP LaserJet 8000 series

The AC and DC power supply circuits are contained in the low-voltage power supply (LVPS). The high voltages required for image formation are generated by the high-voltage power supply (HVPS). The lowvoltage power supply and distribution system are illustrated below.

Low-voltage power supply circuit (8000 series)

Chapter 3 –

Protection Systems

Problems on the load side, such as short-circuits, can cause an excessive flow of current from the DC power supplies or can generate abnormal voltage. When this happens, the excess-current and excessvoltage protection systems automatically shut off output voltage to protect the power supplies.

If the protection systems are activated and the power supply circuit does not output DC voltage, turn the printer off, correct the problem in the faulty load, and then turn the printer on again.

68 – Power supply

Overview

This chapter provides information on cabling and the printer interface.

Input/Output (I/O)

Chapter 4 –

Bidirectional parallel interface

The formatter PCA receives incoming data through its bidirectional interface (IEEE 1284).

The bidirectional parallel interface (IEEE-1284 compliant) is compatible with Centronics parallel interfaces. To take advantage of its enhanced capabilities, such as bidirectional communication, the following must be provided:

• Software application support for these features.

• An IEEE-1284 compliant parallel cable with the correct pin

configuration (see Table 4-1).

4000, 5000, and 8000 only

The user may configure the HIGH SPEED item in the Control Panel menu. The default setting, YES, allows the I/O to run at the higher speeds supported by most newer computers. When set to NO, the parallel interface runs at the slower mode that is compatible for older computers. The user may also configure the ADVANCED FUNCTIONS item. The default setting, ON, allows f or two-wa y parallel communications . The OFF mode disables this advanced functionality.

70 – Input/Output (I/O)

Pin configurations

Signal Name Printer Pin # Parallel Port

Pin #

nSTROBE 1 1 DATA 1 2 2 DATA 2 3 3 DATA 3 4 4 DATA 4 5 5 DATA 5 6 6 DATA 6 7 7 DATA 7 8 8 DATA 8 9 9 nACKNLG 10 10 BUSY 11 11 CALL (PE) 12 12 SELECT 13 13 nAUTOFd 14 14 On VDC (GND) 19 THRU 30 18 THRU 25 nFAULT 32 15 nSelIn 36 17

Chapter 4 –

IEEE-1284 compliant parallel cables

HP helped develop the IEEE-1284 standard and is one of the first companies to introduce products that are compliant with it. HP offers four IEEE-1284 compliant parallel cables. Each is described below.

Part number Length Connector type

C2950A 2 meters

(7 feet)

C2951A 3 meters

(10 feet)

C2945A 2 meters

(7 feet)

C2946A 3 meters

(10 feet)

C2947A 10 meters

(33 feet)

Host A to printer B (large) connector

Host A to printer C (small) connector

Maximum I/O Cable Lengths

Serial RS-232C RS-422A

Parallel (non-IEEE-1284) Parallel (IEEE-1284) with “B”

type connector Parallel (IEEE-1284) with “C”

type connector

72 – Input/Output (I/O)

15 meters (50 feet) 610 meters (2000 feet)

3 meters (10 feet) 3 meters (10 feet)

10 meters (33 feet)

Attaching the printer cables

The printer’s parallel port can have one or both of the following connectors:

B-type parallel (large) C-type parallel (small)

B-type

C-type

Printer interface connections

RS-232-C/RS-422-A serial interface

For this information, see the wiring diagram for common serial input/output cables in the printer service manual.

Chapter 4 –

Configuring the computer interface

To configure the computer interface, see the

Reference Service Guide

, Volume I.

HP LaserJet Family Quick

74 – Input/Output (I/O)

LocalTalk I/O*

The printer implements AppleTalk networking protocol through LocalTalk hardware. The LocalTalk network cable (HP part number 92215N) is connected through the EIO card.

Expanded I/O*

The optional expanded I/O card can be installed in the slots provided on the Formatter PCA. The expanded I/O card provides automatic I/O switching between multiple computers or networks connected to the printer. The network version printers include the HP JetDirect Multi-protocol Network Card with Ethernet/10Base-T and 10Base-2, and LocalTalk.

Flash*

Flash is provided in optional 2 and 4 megabyte (MB) flash memory DIMMs for storage of forms, fonts, and signatures.

Disk*

The optional EIO-based hard disk is used for creating multiple original prints (mopies) and for storing forms, fonts, and signatures.

*This feature does not apply to the HP LaserJet 3100.

Chapter 4 –

76 – Input/Output (I/O)

Media specifications

Overview

Use media that meet the specifications listed on the following pages. By doing so, you will minimize the incidents of paper jams, prevent premature wear to the printer, and reduce repair costs. Hewlett-P ac kard recommends testing print media before buying it in large quantities.

Note

For complete paper specifications for all HP LaserJet printers, see the

HP LaserJet Family Paper Specification Guide

Chapter 5 –

Paper sizes

Metric System

Size Metric Dimensions U.S. Dimensions

A0 841 x 1189 mm 33.1 x 46.8 in A3 297 x 420 mm 11.7 x 16.5 in A4 210 x 297 mm 8.3 x 11.7 in A5 148 x 210 mm 5.8 x 8.3. in B4 (ISO) 250 x 353 mm 9.8 x 13.9 in B5 (ISO) 176 x 250 mm 6.9 x 9.8 in

Imperial (U.S.) System

Size U.S. Dimensions Metric Dimensions

Ledger 11 x 17 in 279 x 432 mm Legal 8.5 x 14 in 216 x 356 mm Letter 8.5 x 11 in 216 x 279 mm Executive 7.3 x 10.5 in 191 x 267 mm Custom 5.8 x 8.2 in to

JIS B4** 10.1 x 14.3 in 257 x 364 mm JIS B5** 7.2 x 10 in 182 x 257 mm J Postcard* 3.9 x 5.8 in 100 x 148 mm J Double Postcard* 5.8 x 7.9 in 148 x 200 mm

* J - Japanese ** JIS Japanese Industry Standard

8.5 x 14 in

149 x 210 mm to 216 x 356 mm

78 – Media specifications

Paper specifications

Category Specifications

Acid content 5.5 pH to 8.0 pH Basis weight:

4000 series Tray 1 4000/4000 N Tray 2 4000 T/4000 TN Tray 2 and Tray 3 4000 series optional 500-sheet tray 4000 series Duplexer

5000 series: Tray 1 Tray 2 or optional 250-sheet Tray Optional 500-sheet Tray Duplexer

3100: Paper input bin Single-sheet input slot Document feeder tray

8000 series: Standard output bin Left output bin Optional 2000-sheet input tray Duplexer

Optional envelope feeder: 4000 series 8000 series

60 to 199 g/m 60 to 105 g/m

60 to 105 g/m 60 to 105 g/m

60 to 105 g/m

the front output slot)

60 to 105 g/m

the front output slot)

44 to 105 g/m

the special media lever)

60 to 105 g/m

75 to 105 g/m

60 to 90 g/m Caliper 3.0 to 7.0 mils (0.094-0.18 mm) Curl in ream Flat within 5 mm (0.2 in) Condition of cut edge Cut with sharp blades with no visible fray Fusing compatibility Must not scorch, melt, offset, or release

hazardous emissions when heated to 205°C

(400°F) for 0.1 second Grain Long grain Moisture content 4% to 6% by weight Smoothness 100-250 Sheffield

(16 to 53 lbs)

(16 to 28 lbs)

(16 to 28 lbs) (up to 42 lbs using

(12 to 28 lbs) (up to 67 lbs using

(16 to 28 lbs)

(20 to 28 lbs)

(16 to 24 lbs)

Chapter 5 –

Paper weight equivalences

Use this table to determine approximate equivalent points in weight specifications other than U.S. bond weight. For example, to determine the equivalent of 20 lb U.S. bond weight paper in U.S. cover weight, locate the bond weight (in row 3, fourth column) and scan across the row to the cover weight (in the sixth column). The equivalent is 28 lb.

Note

Shaded areas indicate a standard weight for that grade.

Metric wt (g/m

Europe Japan Postcard*

60 60 16 41 22 27 33 37 64 75 75 20 50 28 34 42 46 80 80 21 54 30 36 44 49 80 81 22 56 31 38 46 51 90 90 100 100 27 68 37 45 55 61 105 120 120 32 80 44 55 67 74 120 135 135 36 90 50 62 75 83 148 148 0.18 39 157 157 0.19 42 107 58 72 87 97 163 163 0.20 43 110 60 74 176 176 0.23 47 119 65 80 97 108 199 199 53 134 74 90

) U.S. weights (lb) or thickness (mm)

Bond

Text

Cover

thickness

64 17 43 24 29 35 39

105 28 70 39 49 58 65

128 34 86 47 58 71 79

book Wt

24 60 33 41 50 55

100 55 67 82 91

BristolWtIndex

90 100

110 122

Tag Wt

* U.S. postcard measurements are approximate. Use for reference only.

80 – Media specifications

Troubleshooting paper problems

Paper problems can be difficult to detect. The following series of steps will help isolate paper-induced problems versus printer problems:

• Isolate a paper path.

• Isolate a brand of paper.

• Isolate a type of paper.

• Evaluate paper-use practices.

• Evaluate environmental conditions.

Here are some paper usage tips:

• Turn the paper over and print on the other side. Doing so often

corrects excess paper curl.

• Rotate the paper 180° (end-for-end) to feed a diff erent leading edge.

This can help correct multi-sheet feeding problems.

Papers to avoid

• NCR self-carbon (or “carbonless” paper)

• paper that has been preprinted (such as letterhead) with ink that will

not withstand fuser heat (205° C [400° F] for 0.1 second)

• plastic-fiber paper

• embossed paper

• paper with cutouts or perforations

• chemically treated paper

• coated paper

• synthetic paper

• multi-part forms

• odd-sized paper

If your printer is having trouble with paper jams, multi-feeds, or misfeeds, use HP-brand paper: HP 20 lb Multi-Purpose Paper, part number 9300-2092; HP 24 lb LaserJet Paper, part number 9300-2091.

Chapter 5 –

General tips

Paper curl

Paper curl results from both the heating process used to bond the print image (toner) to the paper and from the path that the paper must negotiate through the printer.

Take the following actions to help reduce paper curl: 1 Turn the paper over in the input tray. Some paper packages (reams)

have an arrow indicating the preferred printing side. Experiment to determine which orientation yields the least curl.

2 Try a different output paper path (if available for your printer). Using

the “face-up” output path may yield more acceptable results than the standard “face-down” output bin.

3 Protect the paper from adverse environmental conditions prior to

use. Paper designed f or laser printing has an initial moisture content of 4-6 percent which is maintained as long as it is stored properly. Once the paper has been removed from its packaging it will dry out or absorb additional moisture, depending on the environment. Excess moisture in the paper will increase the amount of curl.

4 Try a different type or brand of paper. Not all paper is designed for

laser printing.

Much of the paper curl that is induced by the laser printer fusing process will tend to relax within the first 24 hours following printing. However, the curl on the leading edge of the page may remain longer because the leading edge tends to remain in contact with the fusing roller for longer periods.

82 – Media specifications

Envelope specifications

Category Specifications

Basis weight Caliper 3.3 to 5.5 mils (0.084 to 0.14 mm) single layer

Curl Less than 6 mm (0.25 in) curl across entire

Finishing Accurate, sharply creased folds with no more

Fusing compatibility

Moisture content 4% to 6% by weight Paper Must meet all the normal paper specifications Smoothness 100 to 250 Sheffield

Should not exceed 105 g/m

thickness

surface

than two thicknesses of paper at the leading edge

Must not scorch, melt, offset, or release hazardous emissions when heated to 205° C (400° F) for 0.1 second

Envelope sizes

Imperial (U.S.) system

Size U.S. Dimensions Metric Dimensions

Tray 1: Minimum Maximum

Optional envelope feeder: Minimum Maximum

3 x 5 in

8.5 x 14 in

3.5 x 6.3 in 7 x 10 in

(28 lb)

76 x 127 mm 216 x 356 mm

90 x 160 mm 178 x 254 mm

Chapter 5 –

Envelopes to avoid

Do not use the following envelopes:

• with clasps, snaps, or tie strings

• with transparent windows, holes, perforations, or cutouts

• having an open flap with adhesive exposed

• having paper, inks , adhesives , or materials that discolor, melt, offset,

or release hazardous emissions when exposed to 205° C (400° F)

• having extremely smooth, shiny, rough, textured, or deeply

embossed surfaces

• damaged, wrinkled, or irregularly shaped

• constructed with encapsulating adhesives that do not require

moistening, but rely instead on pressure to seal them

Preventing printer malfunctions caused by envelopes

When you are printing on envelopes, use these pre ventive measures to avoid printer malfunctions.

• Carefully feed the envelopes into the printer.

• Be aware of the envelope’s construction.

84 – Media specifications

Envelope feeding

Follow these preventive measures when feeding envelopes:

• Envelopes can be manually fed through the printer or they can be

fed automatically through an envelope tray or feeder.

• Closely inspect the leading edge of the envelopes before feeding

them into the printer. Ensure that the leading edge is flat. Watch for envelope curl. Flatten the leading edge of the envelope before printing.

• Be patient; in manual feed mode the printer displays a message

when it is ready to accept the next envelope. Wait for this message to appear before inserting the next envelope.

• Do not allow a large quantity of envelopes to accumulate in the

output bin.

• On most printers, use the rear (or front) output bin (if available) when

printing envelopes. Do not use the top (face-down) output bin.

Envelope construction

• The corner folds need to be well-creased, with no more than two

thicknesses of paper.

• The envelopes must lay flat.

• The paper grain should be diagonal to the direction of the feed.

• Adhesives must meet HP specifications for fusing compatibility.

• Basis weight must not exceed 105 g/m

• Do not use envelopes with clasps, snaps, tie strings, or windows.

• Do not use envelopes made of synthetic materials.

(28 pounds).

Chapter 5 –

Label specifications

Category Specifications

Adhesive Must not be on any external surfaces of the label

Caliper Must not exceed 0.18 mm (0.007 in) Curl In ream: flat within 13 mm (0.5 in) Finishing

precision Fusing

compatibility

Packaging Use moisture-proof wrap to preserve properties.

before, during, or after printing. Label construction and die-cutting must not allow labels to peel off during transport, printing, or fusing.

Cut sheet within 0.79 mm (0.031 in) of nominal and 0.20° square

All adhesions, carrier sheets, top sheets, and other materials used in label construction must be compatible with the heat and pressure of the fusing process. Materials must not discolor, melt, offset, or release hazardous emissions when heated to 205° C (400° F) for 0.1 second.

86 – Media specifications

Preventing printer malfunctions caused by adhesive labels

As with envelopes, prevention is the best way to avoid printer malfunctions caused by adhesive labels. To prevent paper jams and feed problems, labels must meet the following requirements:

• Be cut long grain (as opposed to short grain).

• Totally cover the carrier sheet (no spaces between labels, no

removed labels).

• Contain no excessive glue. (The adhesive should be acrylic-based

emulsion and should not come into direct contact with the printer.)

• Meet HP specifications for fusing compatibility.

• Meet HP specifications for caliper.

• Have a carrier sheet that is not too smooth.

• Use the flat paper path (manual feed slot and rear, or front, face-up

delivery door), which is the recommended printing method.

Chapter 5 –

Transparency specifications

Category Specifications

Caliper 3.9 to 4.3 mils (0.100 to 0.110 mm) Cutting angle 90° ± 0.2° Finishing precision Cut sheet to within 0.8 mm (0.03 in) of nominal

Fusing compatibility

Preventing printer malfunctions caused by transparencies

Use these preventive measures to a v oid printer malfunctions caused by transparencies:

• Use the straightest paper path to avoid curling and other problems.

• Use transparencies with the correct resistivity.

• Use transparencies that meet HP specifications for fusing

compatibility.

• Remove each printed sheet from the tray and place it on a flat

surface before printing the next sheet.

and ± 0.2° of square Overhead transparency material must be

compatible with the heat and pressure of the fusing process. Materials must not discolor, melt, offset material, or release hazardous emissions when heated to 205° C (400° F) for

0.1 second.

88 – Media specifications

HP paper training video

HP has developed a training video focusing on how paper is manufactured and how the manufacturing process relates to the use of paper in HP LaserJet printers. Part numbers are shown below.

The Paper Video explains the manufacturing process.

Part Number Version

5961-0711

5961-0712

(VHS Format)

National Standard Television Committee (NTSC) version (U.S.)

PAL version (Europe, Asia)

Chapter 5 –

90 – Media specifications

Toner cartridge

Overview

This chapter provides information on toner cartridges and their use. Hewlett-Packard recommends using HP toner cartridges, which are designed specifically to enhance the output from the HP LaserJet family of printers.

information

Chapter 6 –

Cartridge weights and page counts

HP LaserJet

4000 series

5000 series

3100 C3906A 730 gm

8000 series

Mopier 240 C3909S 3000 gm

Product Cartridge Full

weight

C4127A EP-A 1295 gm

(45.7 oz)

C4127X EP-X 1445 gm

(51 oz)

C4129X 1880 gm

(66.3 oz)

(26.1 oz)

C3909A 3000 gm

(106 oz)

Empty weight

1020 gm (36 oz)

1000 gm (35.3 oz)

1450 gm (51.1 oz)

640 gm (22.7 oz)

2200 gm (80.5 oz)

Page count at 5% coverage

6,000

10,000

2,500

15,000

92 – Toner cartridge information

Potential toner cartridge issues

Banding

When printing with a laser printer, the toner is applied across the page in horizontal strips. The page is moved through the printer and toner is continually applied. When printing text or black image pages, a large amount of toner is deposited on the page. As the amount of toner deposited on the page decreases, slight speed variations become more apparent. As the resolution (dots per inch) and the speed (pages per minute) increase, a variation in pattern intensity may appear on the page as lines or bands.

The bands are more visible in certain grayscale patterns. High speed printers that are capable of printing high resolution grayscale patterns are more likely to display the pattern variations. Changing the gra yscale pattern or reducing the resolution may significantly reduce the amount of banding that occurs.

Character voids

Small gaps or voids may appear in some of the characters when printing on media other than standard photocopier paper. These “character voids” occur because some print media does not accept the transfer of toner as well as others.

To minimize the occurrence of character voids, avoid media with a rough finish. Use media that is within the Hewlett-Packard paper specifications listed in the user guide or the

Specification Guide

large inconsistencies. If the finish is too smooth, toner will not adhere well. Adjusting the print density may affect the severity of character voids.

. If the finish is too rough, the surface will consist of

HP LaserJet Family Paper

Chapter 6 –

Toner cracking

When the paper is folded and the crease aligns with a line of text, it is possible with certain types of paper for the text to break along the line, giving the appearance of a white line through the text. Papers that do not meet the smoothness (100-250 Sheffield, 100-500 Bendtsen) or wax pick (>11 Dennison) are likely to exhibit this effect more than others.

Toner in the HP LaserJet printers is composed of minute particles of pigmented plastic material (styrene) and iron oxide. When the toner is subjected to the fusing temperature, these individual iron-impregnated plastic particles become part of a larger plastic image on the page. When the printed page is subsequently folded, the plastic image must also give, in some fashion, to accommodate the fold. If the print image has been well-set into the paper, this resulting break in the plastic will not be apparent. However, if the toner is unable to adequately penetrate the paper fibers or if, in the process of folding the paper, the paper fibers behind the toner break away from the page itself , the result will be a “white line” through the image. There are several ways to minimize this effect:

• Ensure that the paper being used meets all of the specifications

provided in the

; in particular the smoothness and wax pick.

Guide

• A lighter density setting will ensure that the toner image will be

composed of less plastic material, thus minimizing the resulting effect of trying to fold the toner image.

• For the reasons listed earlier, a more narrow character-stroke width

might also help.

• Magnetic Ink Character Recognition (MICR) paper may fix toner

cracking problems (see also the

In xerographic (laser) printing, using paper that has a laid finish often causes problems. The surface roughness of the paper is often responsible for the problems.

Paper that is stiffer than xerographic paper also causes problems. Stiff papers do not fold well. When stiff paper is folded and a toner image is applied to the paper’s surface, the problems are even worse.

HP LaserJet Printer Family Paper Specification

HP MICR User’s Guide

94 – Toner cartridge information

Transfer of toner image

After printing a document on an HP LaserJet printer, folding it, and sending it through the mail, you might observe that a portion of the print image was transferred to opposing surfaces of the folded document.

The laser printing process uses a pigmented plastic powder (toner) to form a print image that is first transferred to a sheet of paper (or other print medium) and then melted (fused) onto the surface of the paper to form a permanent image. Though paper is usually thought of as being “soft,” it is actually quite abrasive. When the printed page is folded, movement under pressure between a paper surface and the toner image may cause the paper to abrade (scratch) the toner, causing a transfer of the toner material onto the opposing surface of the paper. This can be demonstrated by rubbing a print image against (or into) a clean sheet of paper.

Some machinery, such as that used by the U.S. Postal Service to sort mail, can apply the necessary pressure and agitation to cause this toner image transfer phenomenon.

To minimize this effect:

• Minimize the amount (or height) of toner used to produce the print

image.

• Use a paper that is less abrasive.

• Ensure optimal fusing of the toner (print) image to the paper.

The print density dial, slide, or control panel settings in the HP LaserJet printers. The print density should be adjusted for a image to reduce the amount (height) of toner prone to abrasive transfer.

HP LaserJet printers have been designed for optimum results with xerographic (laser) bond papers, such as XEROX 4024 photocopy paper. The properties of this type of paper (for example, surface roughness, composition, moisture content) are such that the other causes of potential toner transfer are minimized. Photocop y papers are typically less abrasive than other types of paper (such as writing bond) and are also formulated to ensure optimal fusing of the toner image. Using other types of paper will generally yield less than optimal results in laser printers. For help in selecting paper suitable for use in the

of toner used to produce a print image is controlled by the

amount

lighter

Chapter 6 –

HP LaserJet printers, refer to the

Specification Guide

Direct at 800-227-8164 in the U.S., or HP Distribution at 970-339-7009. Because of the way that laser printing is accomplished, currently there

is no way to entirely eliminate the possibility of toner transfer. However, using these techniques should yield more satisfactory results and will often reduce the problem to imperceptible levels.

. This guide can be ordered by calling HP Parts

HP LaserJet Printer Family Paper

Gray background on envelopes

Poor print quality is normally the result of using envelopes that are of the incorrect weight or finish. The paper used to construct the envelope may be embossed; or may be too heavy, too rough or too slick; or may be made in such a way that it is incompatible with the high temperatures encountered in toner fusing. The result is that the toner does not adhere well to the surface. Also, on heavier envelopes, a gray background may appear on the front (or print side) of the envelope. To reduce the gray background, the print density may need to be set to a darker setting.

96 – Toner cartridge information

HP PLANET PARTNERS

The U. S., Canada, Europe, and Australia now have HP toner cartridge recycling programs. The used toner cartridge should be placed in the wrapper and box that held the new cartridge and sent back for recycling.

U.S.

AUSTRALIA

EUROPE

CANADA

A brochure explaining the recycling program in the U.S., part number 50911325EUS, can be ordered. The customer returns used toner cartridges via UPS at no cost to the customer using shipping labels included in the brochure. The toner cartridges can be shipped one at a time or in volume shipments. Some of the parts are recycled to make new cartridges. Other parts are melted for re-use as raw materials. If the customer has any questions, and to receive the free recycling brochure, refer them to the Customer Information Center at (800) 752-0900.

Australian customers can send their toner cartridges to their local HP dealer. If more than 30 cartridges a month are used, contact the local dealer for instructions on how to have the cartridges picked up directly from the customer's site. For further information, contact the dealer or local HP sales office.

The recycling program in Europe currently includes these countries: Germany, Switzerland, Austria, United Kingdom, the Netherlands, and Sweden. If more than 30 cartridges a month are used, contact the local dealer for instructions on how to have the cartridges picked up directly from the customer's site. For further information, contact the dealer or local HP sales office.

Canada uses Federal Express for their recycling program. At least eight but no more than 40 Toner Cartridges can be shipped at one time. Shipments of less than eight cartridges are at the shipper's expense. Call Federal Express at (800) GoFedEx; (800) 463-3339 to arrange for free pickup of the bundled cartridges. Fill out a Federal Express Waybill or obtain a preprinted one from your dealer.

In Alberta, B.C., Manitoba, NWT, Saskatchewan, and the Yukon, send the bundles to: Hewlett-Packard Toner Cartridge Recycling Program 6551 Westminister Hwy, Unit 160 Richmond, B.C. V7C 4V4 Acct. No.: 1246-1740-5

In the Atlantic provinces, Ontario, and Quebec send the bundles to: Hewlett-Packard Toner Cartridge Recycling Program 6600 Goreway Drive, Unit C Mississauga, Ontario L4V 1S6 Acct. No.: 1246-1740-5

For more information, call:

Dept. 129; Toronto: (800) 678-9430 Ext. 4981

Canada wide: (800) 387-3867

Note

Recycling information is included in the toner cartridge package.

For additional information about HP corporate-wide, environmental policies, practices, and awards, visit

www.hp.com

Chapter 6 –

Refill Statement

Hewlett-Packard toner cartridges have been designed to maximize the reliability of the HP LaserJet printer by including all of the components that need frequent replacement or adjustment within the cartridge. While we recognize that all parts of this critical printer mechanism will not wear consistently, the HP toner cartridge has been designed to optimize the exceptional print quality that is synonymous with the HP LaserJet printer name. While Hewlett-Packard does not prohibit the use of refilled toner cartridges during the warranty period or under a maintenance contract, we also do not recommend their use for the following reasons:

1 The HP LaserJet toner cartridge is not designed to be refilled or

remanufactured.

2 Hewlett-Packard has no control or process to ensure that a refilled

toner cartridge will function at the high level of reliability of a new HP LaserJet toner cartridge. Hewlett-Packard also cannot predict what the long-term effect on the printer's reliability could be from using different toner formulations found in refilled cartridges. Because the HP LaserJet printer has the highest reliability reputation in the industry, we are concerned about any usage that might affect this reputation.

3 Hewlett-Packard has no control over the actual print quality of a

refilled toner cartridge. The print quality of the HP LaserJet toner cartridge directly influences the customer's perception of the HP LaserJet printer itself. The high print quality of the HP LaserJet printer is one of the primary reasons for the success of the product and we are keenly interested in maintaining that image.

The entire family of HP LaserJet printers is covered under a standard one-year warranty from the date of purchase. Hewlett-Packard offers optional maintenance contracts after the one-year warranty expires. The use of refilled toner cartridges alone does not affect either the warranty or any maintenance contract purchased from HP. However, if

an HP LaserJet printer failure or damage is found to be directly attributed to the use of a refilled toner cartridge, the repair will not

98 – Toner cartridge information

HP laserjet schematic

Specifications and Main Features

Frequently Asked Questions

User Manual