HP m701, m706 Troubleshooting Manual

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LaserJet Pro M701/M706

Troubleshooting Manual

LaserJet Pro M706n

www.hp.com/support/ljM701 www.hp.com/support/ljM706

HP LaserJet Pro M701/M706

Troubleshooting Manual

Trademark Credits

, Acrobat®, and PostScript® are

Adobe trademarks of Adobe Systems Incorporated.

Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

The information contained herein is subject to change without notice.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Edition 1, 02/2014

Part number: B6S00-90904

Microsoft®, Windows®, Windows® XP, and Windows Vista® are U.S. registered trademarks of Microsoft Corporation.

ENERGY STAR and the ENERGY STAR mark are registered U.S. marks.

Conventions used in this guide

TIP: Tips provide helpful hints or shortcuts.

NOTE: Notes provide important information to explain a concept or to complete a task.

CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging the

product.

WARNING! Warnings alert you to specific procedures that you should follow to avoid personal injury,

catastrophic loss of data, or extensive damage to the product.

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iv Conventions used in this guide ENWW

Table of contents

1 Theory of operation ....................................................................................................................................... 1

Basic operation ...................................................................................................................................................... 2

Major systems ..................................................................................................................................... 2

Product block diagram ........................................................................................................................ 2

Engine control system ........................................................................................................................................... 3

DC controller ........................................................................................................................................ 4

Low-voltage power supply (LVPS) ...................................................................................................... 5

Overcurrent/overvoltage protection ................................................................................ 7

Fuser control ....................................................................................................................................... 9

Fuser-heater protective function ................................................................................... 12

Fuser control functions ................................................................................................... 13

2 Solve problems ........................................................................................................................................... 15

Solve problems checklist ..................................................................................................................................... 16

Menu map ............................................................................................................................................................ 17

Troubleshooting process .................................................................................................................................... 18

Pre-troubleshooting checklist .......................................................................................................... 18

Determine the problem source ......................................................................................................... 20

Troubleshooting flowchart ............................................................................................. 20

Power subsystem .............................................................................................................................. 21

Power-on checks ............................................................................................................ 21

Power-on troubleshooting overview ........................................................... 21

Control panel checks ......................................................................................................................... 22

Tools for troubleshooting ................................................................................................................................... 23

Engine self-test ................................................................................................................................. 23

Troubleshooting process for product not turning on ...................................................................... 23

Diagrams ........................................................................................................................................... 24

Block diagrams ............................................................................................................... 24

Location of connectors ................................................................................................... 25

DC controller connections ............................................................................ 25

Paper feed driver PCA connections .............................................................. 26

Duplex driver PCA connections ....................................................................................... 27

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Plug and port locations ................................................................................................... 28

Locations of major assemblies ....................................................................................... 29

Switch locations .............................................................................................................. 32

Sensor locations ............................................................................................................. 33

500-sheet paper feeder accessory ................................................................................ 34

Duplex unit ...................................................................................................................... 35

General timing chart ....................................................................................................... 37

Circuit diagrams .............................................................................................................. 38

Use HP Device Toolbox (Windows) ................................................................................................... 40

Internal print-quality test pages ...................................................................................................... 41

Clean the paper path ....................................................................................................... 41

Print the configuration page .......................................................................................... 41

Print quality troubleshooting tools .................................................................................................. 42

Repetitive defects ruler .................................................................................................. 42

Control panel menus ......................................................................................................................... 43

Setup Menu ..................................................................................................................... 43

HP Web Services ........................................................................................... 43

Reports menu ............................................................................................... 44

System Setup menu ..................................................................................... 45

Service menu ................................................................................................ 47

Network Setup menu .................................................................................... 49

Quick Forms menu ........................................................................................ 50

Interpret control panel messages .................................................................................................... 51

Control panel message types ......................................................................................... 51

Control panel messages ................................................................................................. 51

Rear door open ............................................................................................. 51

49 Error, Turn off then on ............................................................................ 51

50.x Fuser Error ............................................................................................ 51

51.XX Error ................................................................................................... 52

54.XX Error ................................................................................................... 52

55.X Error ...................................................................................................... 52

57 Fan Error, Turn off then on ..................................................................... 52

59.X Error ...................................................................................................... 53

79 Error Turn off then on ............................................................................. 53

Black Cartridge Low ...................................................................................... 53

Black Very Low ............................................................................................. 53

Cleaning ........................................................................................................ 54

Device error, press OK .................................................................................. 54

Front door open ............................................................................................ 54

Genuine HP supply installed ........................................................................ 54

Invalid driver Press OK ................................................................................. 54

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Jam in Tray 1, Clear jam and then press OK ................................................. 54

Load Tray 1 Press OK for available media ................................................... 55

Load Tray 1 <TYPE> <SIZE>, Press OK to use available media ................... 55

Load Tray 1, <PLAIN> <SIZE> / Cleaning mode, OK to start ........................ 55

Manual Duplex Load Tray 1, Press OK ......................................................... 55

Manual feed <SIZE> <TYPE>, Press OK to use available media .................. 55

Memory is low. Press OK. ............................................................................. 56

Misprint, Press OK ........................................................................................ 56

Print failure, press OK. If error repeats, turn off then on. ........................... 56

Tray 1 <size> press [OK] to modify .............................................................. 56

Unexpected size in Tray 1 Load <size> Press OK ......................................... 57

Event-log messages .......................................................................................................................... 57

Print the event log .......................................................................................................... 57

Show an event log ........................................................................................................... 57

Event log messages ........................................................................................................ 57

Clear jams ............................................................................................................................................................ 60

Jam locations .................................................................................................................................... 60

Experiencing frequent or recurring paper jams? .............................................................................. 60

Clear jams in Tray 1 ........................................................................................................................... 61

Clear jams in Tray 2 ........................................................................................................................... 63

Clear jams in Tray 3 (M706n model only) ......................................................................................... 67

Clear jams in the toner-cartridge area ............................................................................................. 70

Clear jams in the rear door and fuser area ....................................................................................... 72

Clear jams in the output bin .............................................................................................................. 74

Clear jams in the optional duplexer (M706n model only) ................................................................ 76

Paper feeds incorrectly or becomes jammed ..................................................................................................... 77

The product does not pick up paper ................................................................................................. 77

The product picks up multiple sheets of paper ................................................................................ 77

Prevent paper jams from the paper trays ........................................................................................ 77

Solve image-quality problems ............................................................................................................................ 79

Image defect examples ..................................................................................................................... 79

Clean the product ................................................................................................................................................ 86

Clean the pickup and separation rollers ........................................................................................... 86

Clean the paper path ......................................................................................................................... 86

Solve performance problems .............................................................................................................................. 87

Solve connectivity problems ............................................................................................................................... 88

Solve USB connection problems ....................................................................................................... 88

Solve wired network problems ......................................................................................................... 88

Poor physical connection ................................................................................................ 88

The computer is using the incorrect IP address for the product ................................... 88

The computer is unable to communicate with the product ........................................... 89

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The product is using incorrect link and duplex settings for the network ...................... 89

New software programs might be causing compatibility problems ............................. 89

The computer or workstation might be set up incorrectly ............................................ 89

The product is disabled, or other network settings are incorrect ................................. 89

Service mode functions ....................................................................................................................................... 90

Service menu ..................................................................................................................................... 90

Service menu settings .................................................................................................... 90

Restore the factory-set defaults .................................................................................... 90

Secondary service menu ................................................................................................................... 90

Open the secondary service menu ................................................................................. 90

Secondary service menu structure ................................................................................. 91

Product resets ................................................................................................................................... 92

NVRAM initialization ....................................................................................................... 92

Super NVRAM initialization ............................................................................................. 92

Product updates .................................................................................................................................................. 94

Manually update the firmware ......................................................................................................... 94

Set the product to automatically update the firmware ................................................................... 94

Appendix A Service and support ...................................................................................................................... 95

Hewlett-Packard limited warranty statement ................................................................................................... 96

HP's Premium Protection Warranty: LaserJet toner cartridge limited warranty statement ............................. 97

HP policy on non-HP supplies ............................................................................................................................. 98

HP anticounterfeit Web site ................................................................................................................................ 99

Data stored on the toner cartridge ................................................................................................................... 100

End User License Agreement ............................................................................................................................ 101

OpenSSL ............................................................................................................................................................. 103

Customer self-repair warranty service ............................................................................................................. 104

Customer support .............................................................................................................................................. 105

Appendix B Product specifications ................................................................................................................. 107

Physical specifications ...................................................................................................................................... 108

Power consumption, electrical specifications, and acoustic emissions .......................................................... 108

Environmental specifications ............................................................................................................................ 108

Appendix C Regulatory information ............................................................................................................... 109

FCC regulations .................................................................................................................................................. 110

Environmental product stewardship program ................................................................................................. 111

Protecting the environment ........................................................................................................... 111

Ozone production ............................................................................................................................ 111

Power consumption ........................................................................................................................ 111

viii ENWW

Toner consumption ......................................................................................................................... 111

Paper use ......................................................................................................................................... 111

Plastics ............................................................................................................................................ 112

HP LaserJet print supplies .............................................................................................................. 112

Return and recycling instructions ................................................................................................... 112

United States and Puerto Rico ...................................................................................... 112

Multiple returns (more than one cartridge) ............................................... 112

Single returns ............................................................................................. 112

Shipping ...................................................................................................... 112

Non-U.S. returns ........................................................................................................... 113

Paper ............................................................................................................................................... 113

Material restrictions ........................................................................................................................ 113

Disposal of waste equipment by users ........................................................................................... 11 3

Electronic hardware recycling ........................................................................................................ 113

Chemical substances ....................................................................................................................... 114

Material Safety Data Sheet (MSDS) ................................................................................................ 114

EPEAT .............................................................................................................................................. 114

For more information ...................................................................................................................... 114

Declaration of conformity ................................................................................................................................. 115

Declaration of conformity ................................................................................................................................. 117

Certificate of Volatility ...................................................................................................................................... 119

Safety statements ............................................................................................................................................. 121

Laser safety ..................................................................................................................................... 121

Canada - Industry Canada ICES-003 Compliance Statement ......................................................... 121

VCCI statement (Japan) ................................................................................................................... 121

Power cord instructions .................................................................................................................. 121

Power cord statement (Japan) ....................................................................................................... 121

EMC statement (China) .................................................................................................................... 121

EMC statement (Korea) ................................................................................................................... 122

EMI statement (Taiwan) .................................................................................................................. 122

Laser statement for Finland ........................................................................................................... 122

GS statement (Germany) ................................................................................................................ 123

Substances Table (China) ................................................................................................................ 123

SEPA Ecolabel User Information (China) ........................................................................................ 123

Restriction on Hazardous Substances statement (Turkey) ........................................................... 123

Restriction on Hazardous Substances statement (Ukraine) .......................................................... 124

Eurasian Conformity (Belarus, Kazakhstan, Russia) ...................................................................... 124

Index ........................................................................................................................................................... 125

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x ENWW

List of tables

Table 1-1 Sequence of operation ......................................................................................................................................... 3

Table 1-2 DC controller components ................................................................................................................................... 4

Table 1-3 Low-voltage power supply .................................................................................................................................. 7

Table 1-4 Low-voltage power supply functions. ................................................................................................................. 7

Table 1-5 Fuser control components ................................................................................................................................. 10

Table 1-6 Fuser control functions ...................................................................................................................................... 13

Table 2-1 Troubleshooting flowchart ................................................................................................................................ 20

Table 2-2 Control panel 2ndary Service test access buttons ............................................................................................ 22

Table 2-3 Plug and port locations ...................................................................................................................................... 28

Table 2-4 Event-log messages .......................................................................................................................................... 57

Table 2-5 Event-log-only messages .................................................................................................................................. 58

Table 2-6 Image defect examples ...................................................................................................................................... 79

Table 2-7 Solve performance problems ............................................................................................................................ 87

Table 2-8 Control panel 2ndary Service test access buttons ............................................................................................ 91

Table 2-9 Secondary Service menu .................................................................................................................................... 91

Table B-1 Physical specifications ..................................................................................................................................... 108

Table B-2 Operating-environment specifications ........................................................................................................... 108

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List of figures

Figure 1-1 Product block diagram ........................................................................................................................................ 2

Figure 1-2 Engine control system ........................................................................................................................................ 3

Figure 1-3 DC controller ....................................................................................................................................................... 4

Figure 1-4 Low voltage power supply .................................................................................................................................. 6

Figure 1-5 Fuser components .............................................................................................................................................. 9

Figure 1-6 Fuser control system ........................................................................................................................................ 11

Figure 2-1 Control panel 2ndary Service test access buttons ........................................................................................... 22

Figure 2-2 Product cross section ........................................................................................................................................ 24

Figure 2-3 DC controller connections ................................................................................................................................. 25

Figure 2-4 Paper feed driver connections .......................................................................................................................... 26

Figure 2-5 Duplex driver PCA connections ......................................................................................................................... 27

Figure 2-6 External assembly locations ............................................................................................................................ 29

Figure 2-7 PCA locations ..................................................................................................................................................... 30

Figure 2-8 Motor locations ................................................................................................................................................. 31

Figure 2-9 Fan assembly locations .................................................................................................................................... 31

Figure 2-10 Solenoid component locations ....................................................................................................................... 32

Figure 2-11 Switch locations .............................................................................................................................................. 32

Figure 2-12 Sensor locations ............................................................................................................................................. 33

Figure 2-13 500-sheet paper feeder accessory ................................................................................................................ 34

Figure 2-14 Duplex unit ...................................................................................................................................................... 35

Figure 2-15 General timing chart ....................................................................................................................................... 37

Figure 2-16 General circuit diagram ................................................................................................................................... 38

Figure 2-17 500-sheet paper feeder .................................................................................................................................. 38

Figure 2-18 Duplex unit ...................................................................................................................................................... 39

Figure 2-19 Repetitive defects ruler .................................................................................................................................. 42

Figure 2-20 Control panel 2ndary Service test access buttons ......................................................................................... 91

Figure C-1 Certificate of Volatility (1 of 2) ....................................................................................................................... 119

Figure C-2 Certificate of Volatility (2 of 2) ....................................................................................................................... 120

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xiv ENWW

1 Theory of operation

This chapter presents an overview of the major components of the HP LaserJet Pro M701/M706 series, and it includes a detailed discussion of the image-formation system.

ENWW 1

Basic operation

Major systems

The product contains the following systems:

●

Engine-control system

●

Laser/scanner system

●

Image-formation system

●

Paper feed system

●

Accessories

Product block diagram

Figure 1-1 Product block diagram

Laser scanner system

Engine-control system

Image-formation system

Pickup, feed and delivery system

Accessory

2 Chapter 1 Theory of operation ENWW

Engine control system

The engine control system coordinates all product functions and drives the other four systems.

The engine control system contains these components:

●

DC controller printer circuit assembly (PCA)

●

High-voltage power supply PCA

●

Low-voltage power supply unit

●

Fuser control

Figure 1-2 Engine control system

Formatter

Table 1-1 Sequence of operation

Engine-control system

DC controller

Low-voltage power supply

High-voltage power supply

Fuser control

Laser scanner system

Image-formation system

Pickup, feed and delivery

system

Accessory

Period Duration Purpose Remarks

WAIT period From the time the power is

turned on until the initial drive for the main motor is complete

STBY (Standby period) From end of the WAIT or LSTR

period until either the print command is received from the formatter or the power is turned off

INTR (Initial rotation) From the time the print

command is received until the pickup solenoid is turned on

Removes the charge that creates a potential difference from the drum surface, and adjusts the drum phase

Maintains the product in readiness for a print command and maintains the heater at a targeted temperature

Prepares the photosensitive drum for printing and cleans the transfer charging roller

Detects cartridge presence

ENWW Engine control system 3

Table 1-1 Sequence of operation (continued)

Period Duration Purpose Remarks

PRINT From the end of INTR period

LSTR (Last rotation) From the end of the PRINT

DC controller

Figure 1-3 DC controller

Fuser

until the fuser paper sensor detects the trailing edge of paper

period until the fuser motor stops rotating

input

Low-voltage

power supply

Forms the images on the photosensitive drum and transfers the toner image to the print media

Moves the last printed sheet out of the product

The product enters the INTR period as soon as the formatter sends another print command

Motor

Fan

Solenoid

Transfer roller

High-voltage

power supply

Cartridge

LED

Static charge

eliminator

Control panel

Formatter

Table 1-2 DC controller components

Component type Abbreviation Component name

Motor M1 Drum motor

M2 Fuser motor

Photointerrupter

Sensor

DC controller

Switch

Duplex unit

Input accessory

Laser scanner ass’y

M3 Scanner motor

4 Chapter 1 Theory of operation ENWW

Table 1-2 DC controller components (continued)

Component type Abbreviation Component name

Fan FM1 Main fan

FM2 Sub fan

Solenoid SL1 Cassette pickup solenoid

SL2 MP tray pickup solenoid

Switch SW1 Front interlock switch

SW2 Rear interlock switch

SW3 Cassette-presence switch

SW4 Cartridge door open detection switch

Photointerruptor PS1 TOP sensor

PS2 Loop sensor

PS3 Fuser delivery sensor

PS4 Delivery tray paper-full sensor

PS5 Cassette paper-presence sensor

PS6 MP tray paper-presence sensor

Sensor Environment sensor

Low-voltage power supply (LVPS)

The low-voltage power supply (LVPS) converts AC input voltage to DC voltage. The LVPS has two fuses on the PCA. The LVPS 24 V output is interrupted to the fuser and the high-voltage power supply if the cartridge-door interlock switch (SW501) is in the off position (cover open).

WARNING! The product power switch only interrupts DC voltage from the LVPS. The AC voltage is present in

the product when the power cable is plugged into a power receptacle and the power switch is in the off position. You must disconnect the product power cable before servicing the product.

ENWW Engine control system 5

Figure 1-4 Low voltage power supply

AC input

Rectifying

circuit

Low-voltage power supply DC controller

Fuse

FU1

Zerocross

circuit

+3.3V

generation

circuit

High-voltage power supply

High-voltage

circuit

Fuser circuit

/ZEROX

+3.3VA

+3.3VC

Interlock switch

SW2

+24VC

Formatter

Protection

circuit

+24V

generation

circuit

+3.3VA

+24VA

RMT_24V

+24VB

+24VA

Interlock switch

SW1

6 Chapter 1 Theory of operation ENWW

Table 1-3 Low-voltage power supply

Main DC voltage Sub-

voltage

+ 24V + 24VA

+ 24VB

+ 24VC

+ 3.3V + 3.3VA

+ 3.3VB

+ 3.3VC

Behavior

●

Constantly supplied

●

Stopped during Sleep mode

●

Interrupted when the rear door open

●

Stopped during Sleep mode

●

Interrupted when the cartridge door open

●

Stopped during Sleep mode

●

Constantly supplied

●

Constantly supplied

●

Constantly supplied

●

Stopped during Sleep mode

Table 1-4 Low-voltage power supply functions.

Function Applied

Sleep mode V

Power supply voltage detection N/A

Automatic power OFF V

Automatic power ON/OFF N/A

Active OFF V

Inactive OFF V

Network mode N/A

Power switch illumination V

Low-voltage power supply failure detection V

Power save mode N/A

Overcurrent/overvoltage protection

The low-voltage power supply has a protective function against overcurrent and overvoltage to prevent failures in the power supply circuit. If the DC power is not being supplied from the low-voltage power supply, the protective function might be running. In that case, turn off the power switch and disconnect the power cable. Do not connect the power cable or turn on the power switch again until the cause is found.

If the DC power is not being supplied from the low-voltage power supply, the protective function might be running. In that case, turn off the power switch and disconnect the power cable. Do not connect the power cable or turn on the power switch again until the cause is found.

ENWW Engine control system 7

WARNING! If you believe the overcurrent or overvoltage protection circuits have been activated, do not

connect the product power cable or turn on the product power until the cause of the failure is found and corrected.

In addition, two fuses in the low-voltage power supply protect against overcurrent. If overcurrent flows into the AC line, the fuses melt and cut off the power distribution.

For safety reasons, the product interrupts power (24 V) to the main motor and high-voltage power supply. The interlock switch is turned off to interrupt power when the cartidge door opens (SW260 is turned off). The AC voltage remains present in the product when the power switch is in the off position. Disconnect the power cable when disassembling the product.

NOTE: An accidental electrical short while servicing the product can result in a loss of power to the product

causing the control panel to shut down (blank out). Turn the product power off, and then unplug the power cable. Wait at least 15 minutes before plugging the power cable in and turning the product power on.

8 Chapter 1 Theory of operation ENWW

Fuser control

The fuser-heater control circuit and the fuser-heater safety circuit control the fuser temperature according to commands from the DC controller. The product uses an on-demand fusing method.

Figure 1-5 Fuser components

TH4

TH3

TH2

H1/H2

FU1

TH1

FUSER TEMPERATURE signal

FUSER HEATER CONTROL signal

Fuser film

Pressure roller

Fuser heater control circuit

Fuser heater safety circuit

High-voltage power supply

DC controller

ENWW Engine control system 9

Table 1-5 Fuser control components

Component name Function

H1 Fuser main heater Heats the center area of the fuser film

H2 Fuser sub heater Heats the edge of the fuser film

TH1 Main thermistor Detects the center temperature of the fuser heater (contact type)

TH2 Sub thermistor 1 Detects the temperature at one end of the fuser heater (contact type)

TH3 Sub thermistor 2

TH4 Sub thermistor 3

FU1 Thermal fuse Prevents an abnormal temperature rise of the fuser heater (non-contact

type)

10 Chapter 1 Theory of operation ENWW

Figure 1-6 Fuser control system

AC input

RL101

RL102

Fuser heater

control circuit

Fuser heater safety circuit

Low-voltage power supply

Zerocross

circuit

High-voltage power supply

Relay drive circuit

Current

detection

circuit

Fuser control circuit

DC controller

ZEROX

RLD

FSRD1 FSRD2

FSRCUR

MFSRTH

S1FSRTH

S2FSRTH

S3FSRTH

Fuse r

Fuser film ass’y

TH2

FU1

TH3

H1/H2

Pressure roller

TH1

TH4

ENWW Engine control system 11

Fuser-heater protective function

The fuser-heater protective function detects an abnormal temperature rise of the fuser and interrupts the power supply to the fuser heater. The following protective components prevent an abnormal temperature rise of the fuser-heater:

●

DC controller

The DC controller monitors the detected temperature of the thermistor. The DC controller deactivates the FUSER HEATER CONTROL signal and releases the relay (RL1001) to interrupt the power supply to the fuser heater when it detects an abnormal temperature.

●

Fuser-heater safety circuit

The fuser-heater safety circuit monitors the detected temperature of the thermistor. The fuser-heater safety circuit releases the relays (RL1001 and RL1002) or deactivates the fuser-heater control circuit to interrupt the power supply to the fuser-heater when it detects an abnormal temperature.

●

Thermoswitch

The contact of the thermoswitch is broken to interrupt the power supply to the fuser heater when the temperature of the fuser heater is abnormally high.

●

Current detection circuit

The current detection circuit monitors the current flowing through the fuser heater control circuit. The current detection circuit releases the relays (RL101, RL102) to interrupt power supply to the fuser heater when it detects an abnormal current value.

The DC controller deactivates the FUSER HEATER CONTROL signal to interrupt power supply to the fuser heater when the current of the CURRENT DETECTION signal is higher than a specified value.

12 Chapter 1 Theory of operation ENWW

Fuser control functions

The product has the following fuser control functions.

Table 1-6 Fuser control functions

Function Applied

Fuser temperature control V

Fuser failure detection V

Frequency detection circuit failure detection V

Fuser depressurization mechanism failure detection N/A

Fuser type discrepancy detection N/A

Fuser type identification detection N/A

Fuser presence detection V

Fuser life detection N/A

Relay failure detection N/A

Pressure roller cleaning V

ENWW Engine control system 13

14 Chapter 1 Theory of operation ENWW

2 Solve problems

●

Solve problems checklist

●

Menu map

●

Troubleshooting process

●

Tools for troubleshooting

●

Clear jams

●

Paper feeds incorrectly or becomes jammed

●

Solve image-quality problems

●

Clean the product

●

Solve performance problems

●

Solve connectivity problems

●

Service mode functions

●

Product updates

ENWW 15

Solve problems checklist

1. Ensure that the product is set up correctly.

a. Press the power button to turn on the product or to deactivate the Auto-Off mode.

b. Check the power-cable connections.

c. Ensure that the line voltage is correct for the product power configuration. (See the label in the

cartridge door for voltage requirements.) If you are using a power strip and its voltage is not within specifications, plug the product directly into the wall. If it is already plugged into the wall, try a different outlet.

2. Check the cable connections.

a. Check the cable connection between the product and the computer. Ensure that the connection is

secure.

b. Ensure that the cable itself is not faulty by using a different cable, if possible.

c. Check the network connection. Ensure the network light is lit. The network light is next to the

network port on the back of the product.

If the product remains unable to connect to the network, uninstall and then reinstall the product. If the error persists, contact a network administrator.

3. Check to see if any messages appear on the control panel.

4. Ensure that the paper you are using meets specifications.

5. Ensure that the paper is loaded correctly in the input tray.

6. Ensure that the product software is installed correctly.

7. Verify that you have installed the printer driver for this product, and that you are selecting this product

from the list of available printers.

8. Print a configuration page.

a. If the page does not print, verify that the input tray contains paper and that the paper is properly

loaded.

b. Ensure that the toner cartridge is installed correctly.

c. If the paper jams in the product, clear the jam.

d. If the print quality is unacceptable, complete the following steps:

●

Verify that the print settings are correct for the paper you are using.

●

Solve the print-quality problems.

9. Print a small document from a different program that has printed in the past. If this solution works,

then the problem is with the program you are using. If this solution does not work (the document does not print), complete these steps:

a. Try printing the job from another computer that has the product software installed.

b. Check the cable connection. Direct the product to the correct port, or reinstall the software,

selecting the connection type you are using.

16 Chapter 2 Solve problems ENWW

Menu map

Use the following procedure to print a control panel menu layout map.

1. From the Home screen, press the Setup button.

2. Press the Reports button.

3. Press the Menu Structure button.

ENWW Menu map 17

Troubleshooting process

When the product malfunctions or encounters an unexpected situation, the product control panel alerts you to the situation. This chapter contains information to help diagnose and solve problems.

●

Use the pre-troubleshooting checklist to evaluate the source of the problem and to reduce the number of steps that are required to fix the problem.

●

Use the troubleshooting flowchart to pinpoint the root cause of hardware malfunctions. The flowchart guides you to the section of this chapter that contains steps for correcting the malfunction.

Before beginning any troubleshooting procedure, check the following issues:

●

Are supply items within their rated life?

●

Does the configuration page reveal any configuration errors?

NOTE: The customer is responsible for checking supplies and for using supplies that are in good condition.

Pre-troubleshooting checklist

The following table includes basic questions to ask the customer to quickly help define the problem(s).

General topic Questions

Environment

Paper

Input trays

●

Is the product installed on a solid, level surface (± 1°)?

●

Is the power-supply voltage within ± 10 volts of the specified power source?

●

Is the power-supply plug inserted in the product and the outlet?

●

Is the operating environment within the specified parameters?

●

Is the product exposed to ammonia gas, such as that produced by diazo copiers or office cleaning materials?

NOTE: Diazo copiers produce ammonia gas as part of the copying processes.

Ammonia gas (from cleaning supplies or a diazo copier) can have an adverse effect on some product components (for example, the toner cartridge OPC).

●

Is the product exposed to direct sunlight?

●

Does the customer use only supported paper?

●

Is the paper in good condition (no curls, folds, or distortion)?

●

Is the paper stored correctly and within environmental limits?

●

Is the amount of paper in the tray within specifications?

●

Is the paper correctly placed in the tray?

●

Are the paper guides aligned with the stack?

●

Is the tray correctly installed in the product?

Toner cartridge

Transfer unit and fuser

Covers

●

Is the toner cartridge installed correctly?

●

Are the transfer unit and fuser installed correctly?

●

Is the front cover closed?

18 Chapter 2 Solve problems ENWW

General topic Questions

Condensation

Miscellaneous

●

Does condensation occur following a temperature change (particularly in winter following cold storage)? If so, wipe affected parts dry or leave the product on for 10 to 20 minutes.

●

Was a toner cartridge opened soon after being moved from a cold to a warm room? If so, allow the toner cartridge to sit at room temperature for 1 to 2 hours.

●

Check for and remove any non-HP components (toner cartridges, for example) from the product.

●

Remove the product from the network to ensure that the failure is associated with the product before beginning troubleshooting.

●

For any print-quality issues, calibrate the product.

ENWW Troubleshooting process 19

Determine the problem source

When the product malfunctions or encounters an unexpected situation, the product control panel alerts you to the situation. The troubleshooting flowchart helps you diagnose the root cause of the problem. The remainder of this chapter provides steps for correcting problems.

Troubleshooting flowchart

This flowchart highlights the general processes that you can follow to quickly isolate and solve product hardware problems.

Each row depicts a major troubleshooting step. A “yes” answer to a question allows you to proceed to the next major step. A “no” answer indicates that more testing is needed. Go to the appropriate section in this chapter, and follow the instructions there. After completing the instructions, go to the next major step in this troubleshooting flowchart.

Table 2-1 Troubleshooting flowchart

Power on

Control panel messages

Event log

Information pages

Is the product on and does a readable message display?

Yes

Does the message Ready display on the control panel?

Yes

Open the Troubleshooting menu and print an event log to see the history of errors for this product.

Does the event log print?

Yes

Open the Reports menu and print the configuration pages to verify that all the accessories are installed.

Are all the accessories installed?

Yes

Follow the power-on troubleshooting checks. See Power subsystem

on page 21 and Troubleshooting process for product not turning on on page 23.

After the control panel display is functional, see step 2.

1. Follow the control panel message to resolve the problem.

2. If more information is required to troubleshoot the problem, see

the troubleshooting section of the product user guide.

After the errors have been corrected, go to step 3.

If the event log does not print, check for error messages.

If paper jams inside the product, see the jams section of the product service manual.

If error messages display on the control panel when you try to print an event log, see the control panel message section of the service manual.

After successfully printing and evaluating the event log, see step 4.

If accessories that are installed are not listed on the configuration page, remove the accessory and reinstall it.

After evaluating the configuration pages, see step 5.

Image quality

Interface

Does the print quality meet the customer's requirements?

Yes

Can the customer print successfully from the host computer?

Yes. This is the end of the troubleshooting process.

Compare the images with the sample defects in the image defect tables. See the images defects table in the product service manual.

After the print quality is acceptable, see step 6.

Verify that all I/O cables are connected correctly and that a valid IP address is listed on the Jetdirect configuration page.

If error messages display on the control panel when printing an event log, see the control panel message section of the service manual.

When the customer can print from the host computer, the troubleshooting process ends.

20 Chapter 2 Solve problems ENWW

Power subsystem

Power-on checks

The basic product functions should start up when the product is connected into an electrical outlet and the power switch is pushed to the on position. If the product does not start, use the information in this section to isolate and solve the problem.

Power-on troubleshooting overview

Turn on the product power. If the control panel display remains blank, random patterns display, or asterisks remain on the control panel display, perform power-on checks to find the cause of the problem.

During normal operation, the main cooling fan begins to spin briefly after the product power is turned on. Place your hand over the holes in the right-side cover, near the formatter. If the fan is operating, you will feel air passing out of the product. You can also lean close to the product and hear the fan operating. Place your hand over the hole in the right-rear upper corner. When this fan is operational, the DC side of the power supply is functioning correctly.

After the fan is operating, the main motor turns on (unless the rear or front cover is open, a jam condition is sensed, or the paper-path sensors are damaged). You might be able to visually and audibly determine if the main motor is turned on.

If the fan and main motor are operating correctly, the next troubleshooting step is to isolate print engine, formatter, and control panel problems. Perform an engine test and if the formatter is damaged, it might interfere with the engine test. If the engine test is then successful, the problem is almost certainly with the formatter, the control panel, or the cable that connects them.

Engine self-test on page 23 for instructions on performing an engine self test.

See

If the control panel is blank when you turn on the product, check the following items.

1. Make sure that the product is connected directly into an active electrical outlet (not a power strip) that

delivers the correct voltage.

2. Make sure that the power switch is in the on position.

3. Make sure that the fan runs briefly, which indicates that the power supply is operational.

4. Make sure that the control panel display FFC is connected.

5. Make sure that the formatter is seated and operating correctly. Turn off the product, and then remove

and reinstall the formatter.

6. Remove any external solutions, and then try to turn the product on again.

NOTE: If the control panel display is blank, but the main cooling fan runs briefly after the product power is

turned on, try printing an engine-test page to determine whether the problem is with the control panel display, formatter, or other product assemblies. See

on page 23.

Troubleshooting process for product not turning on

ENWW Troubleshooting process 21

Control panel checks

Use the product control panel to conduct tests on the control panel LEDs, display, or buttons.

Figure 2-1 Control panel 2ndary Service test access buttons

Table 2-2 Control panel 2ndary Service test access buttons

Item Description

1 Left arrow button

2 Cancel button

1. From the Home screen on the product control panel, press the OK button.

2. Press the left arrow button, and then quickly press the Cancel button. The display should return to

Ready status.

3. Press the Setup button again to open the menus. The first menu should be the 2ndary Service menu.

4. Press the 2ndary Service menu, and then scroll to one of the following menu items.

●

LED Test

●

Display Test

●

Button Test

5. Press the menu item to begin the test.

6. After completing the test, return the product to the Ready state, and then press the Cancel

remove the 2ndary Service menu from the menu list.

button to

22 Chapter 2 Solve problems ENWW

Tools for troubleshooting

The section describes the tools that can help you solve problems with your product.

Engine self-test

Perform an engine self-test

1. Make sure that paper is correctly loaded in the tray.

2. Turn the product off, wait for several seconds, and then turn the product on.

3. Within three to five seconds after turning the product on, open and close the print-cartridge door five

times within thirty seconds.

4. If the self-test page prints, then the engine is verified as OK. If the self-test page doesn’t print, then the

engine is verified as incorrect.

NOTE: The product might display a 49 error during the engine test. A 49 error that occurs during an engine

test has no relation to the success or failure of the engine test. To clear a 49 error, turn the product off, then on.

Troubleshooting process for product not turning on

Use the following steps to troubleshoot the product not turning on when the power button is pressed.

1. Before beginning this troubleshooting process, verify the following:

●

The product is being supplied with normal AC voltage

●

The product's AC power cord is connected to the product and plugged in to a power source

●

All internal power cables and wire harnesses are connected securely

2. Replace the engine flat flexible cable, and then press the power button. If the product does not turn on,

proceed to step three.

3. Replace the control panel assembly, and then press the power button. If the product does not turn on,

proceed to step four.

4. Replace the formatter PCA, and then press the power button. If the product does not turn on, the engine

is defective and must be replaced.

ENWW Tools for troubleshooting 23

Diagrams

Block diagrams

Figure 2-2 Product cross section

1 2 3 4

6 7

9 10 11 12 13 14

Item Description Item Description

1 Laser/scanner assembly 8 Cassette (Tray 2) separation pad

2 Photosensitive drum 9 Cassette (Tray 2) pickup roller

3 Toner cartridge 10 Transfer roller

4 Registration shutter 11 Tray 2 cassette

5 Tray 1 (multipurpose tray) 12 Fuser film

6 Tray 1 (multipurpose tray) pickup roller 13 Pressure roller

7 Tray 1 (multipurpose tray) separation pad 14 Fuser

24 Chapter 2 Solve problems ENWW

Location of connectors

DC controller connections

Figure 2-3 DC controller connections

J145

J143

J134

J135

J132

J140

J133

J131

J115

J146

J113

J136

J139

J111

J147

J121

J144

J137

J112

Item Description Item Description

J111 MP tray media-presence sensor J135 Not used

J112 Cassette media-presence sensor J136 High-voltage power supply

J113 Delivery tray media-full sensor J137

J114 Drum motor J139 Formatter

J115 Fuser motor J140 Cartridge door open detection switch

J114

J122

J117

116

J142

J141

J116 Cassette pickup solenoid J141 Low-voltage power supply

J117 MP tray pickup solenoid J142

J121 Paper feeder J143 Left fan

J122 Duplex unit J144 Rear interlock switch

J131 Laser scanner J145 Scanner motor

J132 E-label J146 Right fan

J133 Environment sensor J147 Cassette-presence switch

J134 Not used

ENWW Tools for troubleshooting 25

Paper feed driver PCA connections

Figure 2-4 Paper feed driver connections

J1500

J1504

J1511

J1503

J1501

J1505

J1510

J1502

Item Description Item Description

J1500 DC controller J1504 PF cassette lifter motor

J1501 Paper-feed cassette media surface sensor

Paper feed cassette media-presence sensor

J1502 Paper feed casette-presence switch J1511 Paper feed media feed sensor

J1503 Paper feed cassette pickup solenoid

J1505 Not used

J1510 Paper feed cassette pickup motor

26 Chapter 2 Solve problems ENWW

Duplex driver PCA connections

Figure 2-5 Duplex driver PCA connections

J103 J102

J104

J105

Item Description Item Description

J1 Side misregistration sensor photoreceiver assembly J103 Duplex feed motor

J2 Side misregistration sensor LED assembly J104 Duplex feed clutch

J101

J108

J101 DC controller J105 Duplex fan

J102 Duplex media feed sensor J108 Not used

Duplex jam sensor

ENWW Tools for troubleshooting 27

Plug and port locations

1 Network port

2 Hi-Speed USB 2.0 port

28 Chapter 2 Solve problems ENWW

Locations of major assemblies

Figure 2-6 External assembly locations

Item Description Item Description

1 Top cover assembly 7 Lower rear cover

2 Right cover assembly 8 Rear cover assembly

3 Right handle cover 9 Multi-purpose tray cover

4 Right front cover 10 Cartridge door assembly

5 Left cover 11 Output bin

6 Power receptacle 12 Face-down cover

ENWW Tools for troubleshooting 29

Figure 2-7 PCA locations

Item Description

1 Low-voltage power supply PCA

2 High-voltage power supply PCA

3 Formatter PCA

4Front USB PCA

5 DC controller PCA

30 Chapter 2 Solve problems ENWW

Figure 2-8 Motor locations

Item Description

1Scanner motor

2 Drum motor

3Fuser motor

Figure 2-9 Fan assembly locations

Item Description

1Right fan

2Left fan

ENWW Tools for troubleshooting 31

Figure 2-10 Solenoid component locations

Item Description

1 Cassette pickup solenoid

2 MP tray pickup solenoid

Switch locations

Figure 2-11 Switch locations

Item Description

1 Rear interlock switch

2 Cartridge door open detection switch

3 Front interlock switch

4 Cassette-presence switch

32 Chapter 2 Solve problems ENWW

Sensor locations

Figure 2-12 Sensor locations

Item Description

1 Delivery tray media-full sensor

2 Loop sensor

3TOP sensor

4 Fuser delivery sensor

5 Cassette media-presence sensor

6 MP tray media-presence sensor

7 Environment sensor

ENWW Tools for troubleshooting 33

500-sheet paper feeder accessory

Figure 2-13 500-sheet paper feeder accessory

7 6

Item Description

1 Paper feeder driver PCA

2 Paper feeder cassette pickup solenoid

3 Paper feeder cassette pickup motor

4 Paper feeder cassette-presence switch

5 Paper feeder cassette lifter motor

6 Paper feeder media feed sensor

7 Paper feeder cassette media surface sensor and media-presence sensor

34 Chapter 2 Solve problems ENWW

Duplex unit

Figure 2-14 Duplex unit

Item Description

1 Duplex feed motor

2 Duplex feed clutch

3 Side registration sensor LED assembly

4Duplex fan

5 Side registration sensor photoreceiver assembly

6 Duplex media feed sensor

ENWW Tools for troubleshooting 35

Item Description

7 Duplex jam sensor

8 Duplex driver PCA

36 Chapter 2 Solve problems ENWW

General timing chart

Fuser delivery sensor

Primary charging bias

Fuser delivery sensor

Primary

charging

bias

Figure 2-15 General timing chart

LSTR STBY

TNIRPRTNIYBTSTIAW

Power ON

Signal

3 Top sensor

2 Cassette pickup solenoid

1 Print command

6 VIDEO signal

5 TOP signal

8 Main motor

7 Scanner motor

Fuser motor 9

10 Fuser heater

12 Developing bias

13 Transfer bias

14 Static charge eliminator bias

16 Right fan

15 Fuser bias

Left fan

ENWW Tools for troubleshooting 37

Circuit diagrams

Figure 2-16 General circuit diagram

Figure 2-17 500-sheet paper feeder

6 5 4 3

J1901

J1502 J1500

FL CLK

81234567

FL DATA

/RST

MODE

RXD

GND

TXD

+3.3V

J1505

Option Interface

J18LA

J18L

SW304

123 1234567

54123

CMD1

GND

+24V

GND

STS1

Paper Feeder Driver PCA

CLK1

J1503

J1511

J1504

2112

J1510

3124

J1501

+24V

PICKDV

LIFTDV

+24V

PTOPDV

GND

PTOP

PSNSDV

PLVLDV

GND

PSNS

PLVL

SL3

21 1234

J1001

PS1502

321

PS1500

SOLD9

SOLD8

SOLD3

SOLD2

SOLD1

PS1501

38 Chapter 2 Solve problems ENWW

Figure 2-18 Duplex unit

6 5 4 3

DC Controller Communication

J17LA

J17L

12345678

+3.3V

TXD

GND

DPX_EXST

24V

GND

DPX_CLK

DPX_CMD

DPX_STS

DPX_TMG

FEED_/B

FEED_B

FEED_/A

FEED_A

1234567

J101

1234

J103

11 10 9 8 2345617

3.3VSO/SCK

J12

/CSSIGND

Duplex LED

Connect PCA

J22

+24R

(PWM_HP)

(LEDSEL1)

12345

J32

+24R

12345

(PWM_OUT)

(LEDSEL2)

(PWM_HP)

Duplex Driver PCA

(PWM_OUT)

(LEDSEL2)

(LEDSEL1)

1110982345617

RXD

MODE

GND

10 9 8 2345617

J11

J21

J31

FL DATA

/RST

PSNSHP

PSNS6

GND

PSNSHP

10 9 8 2345617

J108

FL CLK

PSNS5

PSNS4

PSNS3

PSNS2

Duplex Sensor Connect PCA

PSNS6

PSNS5

PSNS4

PSNS3

Sensor ModuleLED Module

PSNS1

PSNS2

J105

J104

J102

10982345617

PSNS0

PSNS1

5.0V

PSNS0

FAN_DRV

FAN_LOCK

GND

24V

CLH_DRV

FEED_SNS

GND

+3.3V

JAM_SNS

GND

+3.3V

1234

10982345617

5.0V

FM3

321

CL1

J202

PS1202

J201

PS1201

123123

ENWW Tools for troubleshooting 39

Use HP Device Toolbox (Windows)

Use the HP Device Toolbox for Windows to view or change product settings from your computer. This tool opens the HP Embedded Web Server for the product.

NOTE: This tool is available only if you performed a full installation when you installed the product. The

HP Embedded Web Server, however, is still available by opening a Web browser and entering the product IP address in the browser address box.

1. Click the Start button, and then click the Programs item.

2. Click your HP product group, and then click the HP Device Toolbox item.

Tab or section Description

Home tab

Provides product, status, and configuration information.

System tab

Provides the ability to configure the product from your computer.

●

Device Status: Shows the product status and shows the approximate percent life remaining of HP supplies.

●

Supplies Status: Shows the approximate percent life remaining of HP supplies. Actual supply life remaining can vary. Consider having a replacement supply available to install when print quality is no longer acceptable. The supply does not need to be replaced unless the print quality is no longer acceptable.

●

Device Configuration: Shows the information found on the product configuration page.

●

Network Summary: Shows the information found on the product network configuration page.

●

Reports: Allows you to print the configuration and supplies status pages that the product generates.

●

Event Log: Shows a list of all product events and errors.

●

Device Information: Provides basic product and company information.

●

Paper Setup: Allows you to change the paper-handling defaults for the product.

●

Print Quality: Allows you to change the print quality defaults for the product, including calibration settings.

●

EcoSMART Console: Change the default times for entering Sleep mode or Auto Power Down mode. Configure which events cause the product to wake.

●

Paper Types: Allows you to configure print modes that correspond to the paper types that the product accepts.

●

System Setup: Allows you to change the system defaults for the product.

●

Service: Allows you to start the cleaning procedure on the product.

●

Save and Restore: Save the current settings for the product to a file on the computer. Use this file to load the same settings onto another product or to restore these settings to this product at a later time.

●

Administration: Set or change the product password. Enable or disable product features.

NOTE: The System tab can be password-protected. If this product is on a network, always

consult with the administrator before changing settings on this tab.

Print tab

Provides the ability to change default print settings from your computer.

●

Printing: Change the default product print settings, such as number of copies and paper orientation. These are the same options that are available on the control panel.

●

PCL5: View and change the PCL5 settings.

●

PostScript: Turn off or on the Print PS Errors feature.

40 Chapter 2 Solve problems ENWW

Tab or section Description

Networking tab

Provides the ability to change network settings from your computer.

HP Web Services tab Use this tab to set up and use various Web tools with the product.

Network administrators can use this tab to control network-related settings for the product when it is connected to an IP-based network. It also allows the network administrator to set up wireless direct functionality. This tab does not appear if the product is directly connected to a computer.

Internal print-quality test pages

Clean the paper path

During the printing process, paper, toner, and dust particles can accumulate inside the product. Over time, this buildup can cause print-quality problems such as toner specks or smearing. This product has a cleaning mode that can correct and prevent these types of problems.

1. From the Home screen on the product control panel, press the OK button.

2. Select the Service menu.

3. Select Cleaning Page.

4. Load plain letter or A4 paper when you are prompted, with long edge toward the product.

5. Press the OK button to print the page.

6. Remove the printed page, follow the control panel message to load the page in Tray 1 again, and then

press the OK button to begin the cleaning process.

Print the configuration page

1. From the Home screen on the product control panel, press the OK button.

2. Select the Reports menu.

3. Select Configuration Report to print the report.

ENWW Tools for troubleshooting 41

Print quality troubleshooting tools

Repetitive defects ruler

Use a ruler to measure occurrences of repetitive image defects to help solve image quality problems. Place the ruler next to the first occurrence of the defect on the page. Find the distance between identical defects and use the figure below to identify the component that is causing the defect.

NOTE: When printing this defect ruler, verify that any scaling options in the print driver are disabled.

Figure 2-19 Repetitive defects ruler

0 mm

44 mm

48.1 mm

58 mm

75.9 mm

94.2 mm

96 mm

Distance between defects Product components that cause the defect

44 mm Toner cartridge (primary charging roller)

48.1 mm Print engine (transfer roller)

58 mm Toner cartridge (developer roller)

75.9 mm Fuser (fuser film)

94.2 mm Fuser (pressure roller)

96 mm Toner cartridge (OPC)

42 Chapter 2 Solve problems ENWW

Control panel menus

Setup Menu

To open this menu, press the OK button. The following sub menus are available:

●

HP Web Services

●

Reports

●

System Setup

●

Service

●

Network Setup

●

Quick Forms

HP Web Services

Menu item Description

Print Information Sheet Use Print Information Sheet to print the instructions for enabling HP Web Services on the product.

ENWW Tools for troubleshooting 43

Reports menu

Menu item Description

Menu Structure Prints a control panel menu layout map.

Configuration Report Prints a list of the product settings.

Supplies Status Prints the toner cartridge status and includes the following information:

Network Summary Prints a list of all product network settings.

Usage Page Displays the number of pages printed by the product.

PCL Font List Prints a list of all installed PCL 5 fonts.

PS Font List Prints a list of all installed PS fonts.

PCL6 Font List Prints a list of all installed PCL 6 fonts.

●

Approximate pages remaining

●

Supply level

●

Serial number

●

Pages printed with this supply

●

First install date

●

Last used date

Service Page Prints the service page.

The service page includes information about supported paper types and other settings that are not included on the configuration page.

Default Info Page Prints a list of the default settings on the product.

44 Chapter 2 Solve problems ENWW

System Setup menu

In the following table, items that have an asterisk (*) indicate the factory default setting.

Menu item Sub-menu item Sub-menu item Description

Language (List of available

control panel display languages.)

Paper Setup Default Paper Size Letter

Default Paper Type Lists available paper

Tray 1 Paper Type

Tray 2 Paper Type

Paper Out Action Wait forever*

Sets the language in which the control panel displays

Legal

11 x 17 in.

types.

Paper Size

Cancel

Override

messages and product reports.

Sets the size for printing internal reports or any print job that does not specify a size.

NOTE: The default setting is determined by the choice of

location during the initial product setup.

Sets the type for printing internal reports or any print job that does not specify a type.

Configures the size and type for the tray.

Determines how the product reacts when a print job requires a paper size or type that is unavailable or when the tray is empty.

●

Wait forever: The product waits until you load the correct

paper.

●

Override: Print on a different size paper after a specified

delay.

●

Cancel: Automatically cancel the print job after a specified

delay.

●

If you select either the Override or Cancel item, the control panel prompts you for the number of seconds to delay.

ENWW Tools for troubleshooting 45

Menu item Sub-menu item Sub-menu item Description

Energy Settings Sleep Delay 1 minute

5 minutes*

15 Minutes

30 Minutes

1 Hour

Auto Power Down Power Down Delay Set the amount of elapsed time before the product turns itself

Wake Events Select the events that bring the product out of sleep mode. The

Specifies the amount of idle time before the product enters sleep mode.

off. The options are:

●

Never

●

30 Minutes*

●

1 Hour

●

2 Hours

●

4 Hours

●

8 Hours

●

24 Hours

following events are available for selection:

●

USB Job

●

LAN Job

●

Button Press

Print Density

Supply Settings Black Cartridge Very Low Setting Stop: The product stops printing until you replace the toner

cartridge.

Prompt: The product stops printing and prompts you to replace

the toner cartridge. You can acknowledge the prompt and continue printing.

Continue*: The product alerts you that the toner cartridge is

very low, but it continues printing.

Low Threshold Enter a percentage for the low threshold setting.

Store Usage Data Select where to store the product's usage data, either on the

supplies or not on the supplies.

Courier Font Regular*

Dark

Sets Courier font values.

46 Chapter 2 Solve problems ENWW

Service menu

In the following table, items that have an asterisk (*) indicate the factory default setting.

Menu item Sub-menu item Sub-menu item Description

Cleaning Page Cleans the product when specks

or other marks appear on printed output. The cleaning process removes dust and excess toner from the paper path.

Load plain letter or A4 paper when you are prompted, with the long edge toward the printer. Press the OK button to print the page.

Remove the printed page, follow the control panel message to load the page in Tray 1 again, and then press the OK button to begin the cleaning process.

USB Speed High*

Full

Less Paper Curl On

Off*

Archive Print On

Off*

Firmware Datecode Displays the current firmware

Restore Defaults Sets all settings to the factory

Signature Check Cancel if Invalid*

Prompt if Invalid

Sets the USB speed for the USB

connection to the computer. For the product to actually operate at high speed, it must have high speed enabled and be connected to an EHCI host controller that is also operating at high speed. This menu item does not reflect the current operating speed of the product.

When printed pages are

consistently curled, this option sets the product to a mode that reduces curl.

When printing pages that will be

stored for a long time, this option sets the product to a mode that reduces toner smearing and dusting.

datecode

default values

Validates HP firmware

downloads.

ENWW Tools for troubleshooting 47

Menu item Sub-menu item Sub-menu item Description

LaserJet Update Check for Updates Now Install Now

Remind Me Later

Skip this Update

Manage Updates Allow Downgrade

Check Automatically

Prompt Before Install

Allow Updates

48 Chapter 2 Solve problems ENWW

Network Setup menu

In the following table, items that have an asterisk (*) indicate the factory default setting.

Menu item Sub-menu item Description

IPv4 Config Method DHCP

BootP

Auto IP

Manual

Network Services IPv4

IPv6

Show IP Address Display IP address on the product control panel.

Link Speed Automatic*

10T Full

10T Half

100TX Full

100TX Half

Security HTTPS Enforcement

Firewall

Access Control List

802.1X

Enables or disables the IPv4 and IPv6 protocols. By default, each protocol is enabled.

Sets the link speed manually if needed.

After setting the link speed, the product automatically restarts.

Reset All Security

Restore Defaults Resets all network configurations to their factory defaults.

ENWW Tools for troubleshooting 49

Quick Forms menu

Menu item Sub-menu item Description

Notebook Paper Narrow Rule

Wide Rule

Child Rule

Graph Paper 1/8 inch

5 mm

Checklist 1-Column

2-Column

Music Paper Portrait

Landscape

Prints pages that have preprinted lines

Prints pages that have preprinted graph lines

Prints pages that have preprinted lines with check boxes

Prints pages that have preprinted lines for writing music

50 Chapter 2 Solve problems ENWW

Interpret control panel messages

Control panel message types

Alert and warning messages appear temporarily and might require you to acknowledge the message by pressing the OK button to resume or by pressing the job might not complete or the print quality might be affected. If the alert or warning message is related to printing and the auto-continue feature is on, the product will attempt to resume the printing job after the warning has appeared for 10 seconds without acknowledgement.

Critical error messages can indicate some kind of failure. Turning off and then turning on the power might fix the problem.

Control panel messages

Rear door open

Description

The product rear door is open.

Recommended action

Close the rear doo.

49 Error, Turn off then on

button to cancel the job. With certain warnings, the

Description

The product experienced an internal error.

Recommended action

Turn the product off, wait at least 30 seconds, and then turn the product on and wait for it to initialize.

If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

If the message persists, contact HP support.

50.x Fuser Error

Description

The product has experienced an error with the fuser.

Recommended action

Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize.

Turn off the product, wait at least 25 minutes, and then turn on the product.

If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

If the message persists, contact HP support.

ENWW Tools for troubleshooting 51

51.XX Error

54.XX Error

Description

The product has experienced an internal hardware error.

Recommended action

Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize.

If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product on.

If the message persists, contact HP support.

Description

The product has experienced an error with one of the internal sensors.

Recommended action

Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize.

If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

If the message persists, contact HP support.

55.X Error

Description

The product has experienced an internal error.

Recommended action

Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize.

If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

If the message persists, contact HP support.

57 Fan Error, Turn off then on

Description

The product has experienced a problem with its internal fan.

Recommended action

Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize.

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If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

If the message persists, contact HP support.

59.X Error

Description

The product has experienced a problem with one of the motors.

Recommended action

Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize.

If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

If the message persists, contact HP support.

79 Error Turn off then on

Description

The product has experienced an internal firmware error.

Recommended action

Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize.

If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

If the message persists, contact HP support.

Black Cartridge Low

Description

The toner cartridge is nearing the end of its useful life.

Recommended action

Printing can continue, but consider having a replacement toner cartridge on hand.

Black Very Low

Description

The toner cartridge is at the end of its useful life. A customer configurable option on this product is "Prompt to Remind Me in 100 pages, 200 pages, 300 pages, 400 pages, or never." This option is provided as a customer convenience and is not an indication these pages will have acceptable print quality.

Recommended action

To ensure optimal print quality, HP recommends replacing the toner cartridge at this point. You can continue printing until you notice a decrease in print quality. Actual cartridge life may vary.

ENWW Tools for troubleshooting 53

Once an HP toner cartridge has reached very low, HP's Premium Protection Warranty on that toner cartridge has ended. All print defects or cartridge failures incurred when an HP toner cartridge is used in continue at very low mode will not be considered to be defects in materials or workmanship in the toner cartridge under the HP Print Cartridge Warranty Statement.

Cleaning

Description

The product periodically performs a cleaning procedure to maintain the best print quality.

Recommended action

Wait for the cleaning process to finish.

Device error, press OK

Description

An internal error occurred.

Recommended action

Press the OK button to resume the job.

Front door open

Description

The product front door is open.

Recommended action

Close the front door.

Genuine HP supply installed

Description

A genuine HP toner cartridge was installed.

Recommended action

No action necessary.

Invalid driver Press OK

Description

You are using an incorrect print driver.

Recommended action

Select the correct print driver.

Jam in Tray 1, Clear jam and then press OK

Description

The product has detected a jam.

54 Chapter 2 Solve problems ENWW

Recommended action

Clear the jam from the tray, and then press OK.

If the message persists, contact HP support.

Load Tray 1 Press OK for available media

Description

The tray is empty.

Recommended action

Load paper into the tray to continue printing. Press the OK button to select a different tray.

Load Tray 1 <TYPE> <SIZE>, Press OK to use available media

Description

The tray is not configured for the paper type and size that the print job is requesting.

Recommended action

Load the paper required by the job into Tray 1, or press the OK button to use the paper currently in the tray.

Load Tray 1, <PLAIN> <SIZE> / Cleaning mode, OK to start

Description

The product is ready to process the cleaning operation.

Recommended action

Load Tray 1 with plain paper in the size indicated, and then press the OK button.

Manual Duplex Load Tray 1, Press OK

Description

The first side of a manual duplex job has printed, and the page needs to be loaded to process the second side.

Recommended action

Retrieve the printed stack from the output bin, and place it with the printed-side facing down in Tray 1. If prompted, press the appropriate control panel button to continue.

Manual feed <SIZE> <TYPE>, Press OK to use available media

Description

The product is set for manual feed mode.

Recommended action

Press the OK button to use available media or load the correct paper into Tray 1.

ENWW Tools for troubleshooting 55

Memory is low. Press OK.

Description

The product memory is almost full.

Recommended action

Press the OK button to finish the job, or press the

Break the job into smaller jobs that contain fewer pages.

Misprint, Press OK

Description

Paper has been delayed as it moves through the product.

Recommended action

Press the OK button to clear the message.

To avoid this problem, try the following solutions:

1. Verify the paper in the tray matches the paper sized defined in the print job.

2. Adjust the paper guides in the tray. Make sure the front paper guide is pushing the paper against the

back edge of the tray.

3. Use paper that meets HP specifications. Store paper unopened in its original packaging.

4. Use the product in an area that meets the environmental specifications for this product.

Print failure, press OK. If error repeats, turn off then on.

button to cancel the job.

Description

The product cannot process the page.

Recommended action

Press the OK button to continue printing the job, but output might be affected.

If the error persists, turn the power off and then on. Resend the print job.

Tray 1 <size> press [OK] to modify

Description

The tray was closed and the current tray size configuration displays.

Recommended action

Press [OK] to change the size configuration or press Cancel to ignore the message and keep the current setting.

NOTE: If no action is taken with fifteen seconds, the message automatically clears and the display returns

to Ready status.

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Unexpected size in Tray 1 Load <size> Press OK

Description

The product has detected paper in the tray that does not match either the paper size specified by the print job, or the configuration for the tray.

Recommended action

Load the correct paper specified by the print job into the tray, or configure the tray for the size that you have loaded.

Event-log messages

Print the event log

1. Make sure the product is in the Ready state.

2. From the Home screen on the product control panel, press the OK button.

3. Press the left arrow button, and then quickly press the Cancel

4. The product returns to the Ready state. Press the OK button to reopen the menus.

5. Select the 2ndary Service menu.

6. Select the Service Reports menu.

7. Select the Error Report item.

Show an event log

You can use HP Device Toolbox to view the event log from a computer.

NOTE: This tool is available only if you performed a full installation when you installed the product.

1. Click the Start button, and then click the Programs item.

2. Click your HP product group, and then click the HP Device Toolbox item.

3. Click the Home tab, and then click the Event Log item. The event log shows a list of all product events

and errors.

Event log messages

The following table contains any event log codes for this product that correspond to a control panel error message. To resolve these events, consult the control panel error message.

button.

Table 2-4 Event-log messages

Event code Description

13.0000 Paper jam

20.0000 Memory out

21.0000 Page misfeed or mispick

41.2000 Beam detect malfunction

ENWW Tools for troubleshooting 57

Table 2-4 Event-log messages (continued)

Event code Description

41.3000 Unexpected size

50.0000 Fuser error

50.1000 Low fuser temperature error

50.3000 High fuser temperature error

50.4000 Fuser drive circuit error

51.0000 Beam detect or laser error

52.0000 Engine laser scanner error

55.3000 Engine-formatter communication error

55.4000 Engine communication timeout error

57.0000 Fan motor error

57.0600 Fan motor error

Some product events do not produce a message that displays on the control panel. Instead, they are only recorded in the event log.

Table 2-5 Event-log-only messages

Event code Description Solution

50.2000 Slow fuser error

50.7000 Fuser open error

Low sub-thermistor fuser error

High sub-thermistor fuser error

51.2000 Black scanner laser error (inline devices only)

54.0100 Environmental sensor error Verify that the DC controller connectors are firmly connected.

54.0600 Density sensor error Verify that the cables between the DC controller is firmly connected.

54.1100 Black density out of range

54.1200 Black density measurement abnormality

54.1800 Black toner level sensor error 1. Turn off the power by using the power switch, and then wait at least

If the error persists, replace the temperature/humidity sensor.

If the error persists, replace the DC controller.

If the error persists, replace the misregistration sensor.

If the error persists, replace the DC controller.

30 seconds.

2. Turn on the power and wait for the product to initialize.

If the error persists, replace the DC controller.

58 Chapter 2 Solve problems ENWW

Table 2-5 Event-log-only messages (continued)

Event code Description Solution

54.2100 Beam detect (BD) error If the error persists, replace the DC controller.

If the error persists, replace the product.

54.2500 Top-of-page sensor error Verify that the DC controller connectors are firmly connected.

If the error persists, replace the DC controller.

ENWW Tools for troubleshooting 59

Clear jams

Jam locations

Jams can occur in these locations:

1 Output bin

2 Print cartridge area

3Tray 1

4Tray 2

5 Optional Tray 3 (M706n model only)

6 Rear door

7 Duplex unit area (M706n model only)

Loose toner might remain in the product after a jam. This problem typically resolves itself after a few sheets have been printed.

Experiencing frequent or recurring paper jams?

To reduce the number of paper jams, try these solutions.

1. Use only paper that meets HP specifications for this product.

2. Use paper that is not wrinkled, folded, or damaged. If necessary, use paper from a different package.

3. Use paper that has not previously been printed or copied on.

4. Make sure the tray is not overfilled. If it is, remove the entire stack of paper from the tray, straighten

the stack, and then return some of the paper to the tray.

5. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the guides so

they are touching the paper stack without bending it.

6. Make sure that the tray is fully inserted in the product.

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7. If you are printing on heavy, embossed, or perforated paper, use the manual feed feature and feed

sheets one at a time.

8. Verify that the tray is configured correctly for the paper type and size.

a. On the product control panel, press the OK button.

b. Open the following menus:

●

c. Verify the tray is configured for the paper type and size.

9. Make sure the printing environment is within recommended specifications.

Clear jams in Tray 1

System Setup

Paper Setup

1. If most of the sheet of paper is visible in the tray,

slowly pull the jammed paper out of the product using both hands.

If most of the sheet of paper has been pulled inside the product or no paper is visible, continue with the following steps.

2. Open the front door.

ENWW Clear jams 61

3. Remove the toner cartridge.

4. Lift the jam-plate and carefully remove any

jammed paper. Use both hands to remove jammed paper to avoid tearing the paper.

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5. Reinsert the toner cartridge.

6. Close the front door.

Clear jams in Tray 2

1. Remove the tray from the product.

ENWW Clear jams 63

2. Remove the paper from the tray, and discard any

damaged paper.

3. Make sure the paper guides are adjusted for the

correct paper size. If necessary, unlock the tray using the slide lock at the rear of the tray, and then adjust to the correct paper size.

4. Load the paper into the tray. Make sure that the

stack is flat at all four corners and that the top of the stack is below the maximum-height indicators.

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5. Reinsert and close the tray.

6. Open the front door.

7. Remove the toner cartridge.

ENWW Clear jams 65

8. Lift the jam-plate and carefully remove any

jammed paper. Use both hands to remove jammed paper to avoid tearing the paper.

9. Reinsert the toner cartridge.

10. Close the front door.

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Clear jams in Tray 3 (M706n model only)

1. Remove the tray from the product.

2. Remove the paper from the tray, and discard any

damaged paper.

3. Make sure the paper guides are adjusted for the

correct paper size.

ENWW Clear jams 67

4. Load the paper into the tray. Make sure that the

stack is flat at all four corners and that the top of the stack is below the maximum-height indicators.

5. Reinsert and close the tray.

6. Open the front door.

68 Chapter 2 Solve problems ENWW

7. Remove the toner cartridge.

8. Lift the jam-plate and carefully remove any

jammed paper. Use both hands to remove jammed paper to avoid tearing the paper.

ENWW Clear jams 69

9. Reinsert the toner cartridge.

10. Close the front door.

Clear jams in the toner-cartridge area

1. Open the front door.

70 Chapter 2 Solve problems ENWW

2. Remove the toner cartridge.

3. Lift the jam-plate and carefully remove any

jammed paper. Use both hands to remove jammed paper to avoid tearing.

ENWW Clear jams 71

4. Reinsert the toner cartridge.

5. Close the front door.

Clear jams in the rear door and fuser area

1. Open the front door.

72 Chapter 2 Solve problems ENWW

2. Open the rear door to check for jammed paper.

3. Remove any jammed paper. Use both hands to

pull out the paper to avoid tearing.

ENWW Clear jams 73

4. Close the rear door.

5. Close the front door.

Clear jams in the output bin

1. If paper is visible in the output bin, grasp the

leading edge with both hands and slowly remove it.

74 Chapter 2 Solve problems ENWW

2. Open the rear door to check for jammed paper.

3. Remove any jammed paper. Use both hands to

pull out the paper to avoid tearing.

4. Close the rear door.

ENWW Clear jams 75

Clear jams in the optional duplexer (M706n model only)

1. Remove the duplexer.

2. Remove any paper from the duplexer.

3. Reinstall the duplexer.

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Paper feeds incorrectly or becomes jammed

This section will discuss the following:

●

The product does not pick up paper

●

The product picks up multiple sheets of paper

●

Prevent paper jams from the paper trays

The product does not pick up paper

If the product does not pick up paper from the tray, try these solutions.

1. Open the product and remove any jammed sheets of paper.

2. Load the tray with the correct size of paper for your job.

3. Make sure the paper size and type are set correctly on the product control panel.

4. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the guides to

the appropriate indentation in the tray.

5. Check the product control panel to see if the product is waiting for you to acknowledge a prompt to feed

the paper manually. Load paper, and continue.

6. The rollers above the tray might be contaminated. Clean the rollers with a lint-free cloth dampened

with warm water.

The product picks up multiple sheets of paper

If the product picks up multiple sheets of paper from the tray, try these solutions.

1. Remove the stack of paper from the tray and flex it, rotate it 180 degrees, and flip it over. Do not fan

the paper. Return the stack of paper to the tray.

2. Use only paper that meets HP specifications for this product.

3. Use paper that is not wrinkled, folded, or damaged. If necessary, use paper from a different package.

4. Make sure the tray is not overfilled. If it is, remove the entire stack of paper from the tray, straighten

the stack, and then return some of the paper to the tray.

5. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the guides to

the appropriate indentation in the tray.

6. Make sure the printing environment is within recommended specifications.

Prevent paper jams from the paper trays

To reduce the number of paper jams, try these solutions.

1. Use only paper that meets HP specifications for this product.

2. Use paper that is not wrinkled, folded, or damaged. If necessary, use paper from a different package.

3. Use paper that has not previously been printed or copied on.

ENWW Paper feeds incorrectly or becomes jammed 77

4. Make sure the tray is not overfilled. If it is, remove the entire stack of paper from the tray, straighten

the stack, and then return some of the paper to the tray.

5. Make sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the guides so

they are touching the paper stack without bending it.

6. Make sure that the tray is fully inserted in the product.

7. If you are printing on heavy, embossed, or perforated paper, use the manual feed feature and feed

sheets one at a time.

8. Verify that the tray is configured correctly for the paper type and size and that the paper size matches

the size specified in the print job.

9. Make sure the printing environment is within recommended specifications.

78 Chapter 2 Solve problems ENWW

Solve image-quality problems

Image defect examples

These examples identify the most common print-quality problems.

Table 2-6 Image defect examples

Problem Image example Solution

Blank page

Light print (partial page)

Light print (entire page)

1. The laser/scanner shutter on the toner cartridge might be damaged. Replace the

toner cartridge.

2. The laser/scanner shutter on the laser/scanner might be damaged. Replace the

laser/scanner.

3. The laser/scanner might be damaged. Replace the laser/scanner.

4. Poor developing bias with the cartridge contacts. Clean the contact on the toner

cartridge.

5. The high-voltage power supply might be damaged. Replace the high-voltage

power supply.

1. Make sure that the toner cartridge is fully installed.

2. The toner cartridge might be almost empty. Check the supplies status, and replace

the toner cartridge if necessary.

3. The paper might not meet HP specifications (for example, the paper is too moist

or too rough).

1. Make sure that the toner cartridge is fully installed.

2. Make sure that the Economode setting is turned off at the control panel and in the

print driver. For more information, see the product user guide.

3. Open the Setup menu at the product control panel. and then open the System Setup menu. Increase the Print Density setting.

4. Try using a different type of paper.

5. The toner cartridge might be reaching its estimated end of life. Check the supplies

status, and replace the toner cartridge if necessary.

ENWW Solve image-quality problems 79

Table 2-6 Image defect examples (continued)

Problem Image example Solution

Perform the following test

6. The transfer roller shaft might be dirty. Remove the transfer roller and clean the

7. If the transfer roller is deformed or damaged, replace the roller.

8. The high-voltage power supply might be damaged. Replace the high-voltage

9. The laser/scanner might be damaged. Replace the laser/scanner.

Stop a print job during the print operation before it is complete, then remove the toner cartridge. Open the photosensitive drum shield, and look at the toner image on the drum.

●

If the image is not fully transferring to the page, replace the transfer roller.

●

If the toner on the drum is faint, replace the laser/scanner.

shaft to ensure good contact.

power supply.

If replacing the laser/scanner does not resolve the problem and the high-voltage power supply was not replaced (step 8), replace the high-voltage power supply.

Specks (front or back of the page is dirty)

Dropouts

Specks might appear on a page after a jam has been cleared.

1. The paper might be dirty. Use a new package of paper. Make sure that the paper is

stored correctly. See your product user guide.

2. Print a few more pages to see if the problem corrects itself.

3. Clean the inside of the product and run a cleaning page to clean the fuser.

4. Try using a different type of paper.

5. Check the toner cartridge for leaks. If the toner cartridge is leaking, replace it.

6. The cassette pickup roller might be dirty. Clean the roller. If it cannot be cleaned,

replace the roller.

7. Repetitive dirt marks can be caused by the registration roller, transfer roller, or

pressure roller. Use the repetitive defects ruler to identify the problem, and then replace the appropriate assembly.

8. The paper-feed guide, or the fuser-inlet guide might be dirty. Clean the guide.

9. The delivery rollers might be dirty. Clean the rollers.

1. Make sure that the environmental specifications for the product are being met.

2. Try using a smoother paper.

3. If the transfer roller is deformed or damaged, replace the roller.

4. The high-voltage contact of the static eliminator with the toner cartridge might be

dirty. Clean the contact.

5. The photosensitive drum, primary charging roller, or developing roller might be

damaged. Replace the toner cartridge.

6. The fuser film might be scratched or dirty. Replace the fuser.

7. The high-voltage power supply might be damaged. Replace the high-voltage

power supply.

80 Chapter 2 Solve problems ENWW

Table 2-6 Image defect examples (continued)

Problem Image example Solution

Lines

Horizontal lines

Gray background (image is obviously dark)

1. Print a few more pages to see if the problem corrects itself.

b b

2. Clean the inside of the product and run a cleaning page to clean the fuser.

3. The photosensitive drum might be scratched. Replace the toner cartridge.

4. The fuser-inlet guide might be dirty. Clean the guide.

5. The fuser film might be scratched. Replace the fuser.

1. The photosensitive drum might be scratched. Replace the toner cartridge.

2. The fuser film might be dirty or damaged. Replace the fuser.

1. Do not use paper that has already been run through the product.

2. Try using a different type of paper.

3. Print a few more pages to see if the problem corrects itself.

4. Turn over the paper in the tray. Also, try rotating the paper 180°.

5. Open the Setup menu at the product control panel. and then open the System

Setup menu. Increase the Print Density setting.

Toner smear

6. Make sure that the environmental specifications for the product are being met.

7. The toner cartridge might need to be replaced.

8. The toner-cartridge ground or bias contacts might be dirty. Clean the contacts.

9. Stop a print job before it is complete, and then remove the toner cartridge. Open

the photosensitive drum shield, and look at the toner image on the drum.

●

If the image is not fully transferring to the page, replace the transfer roller.

●

If the toner on the drum is faint, replace the laser/scanner.

10. The high-voltage power supply might be damaged. Replace the high-voltage

power supply.

1. Print a few more pages to see if the problem corrects itself.

2. Try using a different type of paper.

3. Make sure that the environmental specifications for the product are being met.

4. Clean the inside of the product and run a cleaning page to clean the fuser.

5. The toner cartridge might need to be replaced.

ENWW Solve image-quality problems 81

Table 2-6 Image defect examples (continued)

Problem Image example Solution

Loose toner

Repeat defects

Repeat image

DearMr.Abhjerhjk,

Thedhjhﬁuhuifteint hhkjhjnfj usa weuejd, fnk ksnehvnkkjdfkaakdsshsjhnck kajhdhfkashfhnduujdn. Pkshkkhklhlkhkhyufwe4yrh9jjﬂklndjdskshkshdcnksnjcnal aksnclnslskjlncslnaslnslna,ncnsljsjscljcknnsnclknsllj hwlsdknlsnwljsnlnsclnijhsnclsncijhn.Iosi fsjs jlkhandjnathis isa hn. jnsﬁrstie adjakjdajjssk.Thsiiusvnvlutyehlchafted, andwhenhghjhgjhkjdjadt sonnleh.

Suolklvjsdjhvjkrttensutc ofjthjkfjknvjdjhwjd,anolkd .atfhjdjhtajshef.Sewlﬂnvatugahgjfjknvrkdkjdhsjhvjk sjskrplobook.Camegajdsandtheirdjnlnasorgedtyehha asashf hvof thetinhghin thecescmdalvlalatojk.Ho sn shj shjkha sjcakvkjn? Noahdkjahhtuahahavjnvhvvhaefver Tehrehahkjvaknihidhwasskjsaaa dhkjfnanj cjkhapsldnljllhfoihrfhthejahjkkjnaoahjakah w asjkskjnkas safjkankcakajhjkneanjsdnqaejhcpjtpvjlnv4purlaxnwl.Ana

l,andthe askeinaofahthvnasm.Sayhvjantjhhjhrajnvefh k vnjavkfkahjda.Smakkljla sehiahadheufhifyou doklakck wvkaah calllthe cjakhaaadasdﬁjs.

Sincerel

Mr.Scmehnjcj

Loose toner, in this context, is defined as toner that can be rubbed off the page.

1. If you have observed a rougher texture on one side of your paper, try printing on

the smoother side.

2. Make sure that the environmental specifications for the product are being met.

3. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

4. The pressure roller is dirty, the fuser film is scratched, or a foreign substance is on

the fuser film. Use the Fuser Test Page option in the Troubleshooting menu to test the fuser. If the error persists, replace the fuser.

1. Print a few more pages to see if the problem corrects itself.

2. Clean the inside of the product and run a cleaning page to clean the fuser.

3. Use the repetitive defect ruler to determine if the defect is caused by the fuser or

the toner cartridge.

●

If the toner cartridge is causing the defect, run the print/stop test at the 500 msec setting. If the test shows a defect, replace the toner cartridge.

●

Use the Fuser Test Page option in the Troubleshooting menu to test the fuser. If the error persists, replace the fuser.

This type of defect might occur when using preprinted forms or a large quantity of narrow paper. Verify that the preprinted ink used on forms meet HP specifications for use in laser printers.

1. Print a few more pages to see if the problem corrects itself.

2. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

Misformed characters

AaBbCc AaBbCc

3. Verify that the product is configured for the correct paper type.

4. Use the Fuser Test Page option in the Troubleshooting menu to test the fuser. If

the error persists, replace the fuser.

1. Print a few more pages to see if the problem corrects itself.

2. Make sure that the environmental specifications for the product are being met.

3. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

4. The laser/scanner wire connectors might have poor contact. Reconnect the

connectors.

5. The laser/scanner might be damaged. Replace the laser/scanner.

82 Chapter 2 Solve problems ENWW

Table 2-6 Image defect examples (continued)

Problem Image example Solution

Page skew

Curl or wave

Wrinkles or creases

1. Print a few more pages to see if the problem corrects itself.

2. Verify that no torn pieces of paper are inside the product.

3. Make sure that paper is loaded correctly and that all adjustments have been

made. Make sure that the guides in the tray are not too tight or too loose against the paper.

4. Turn over the paper in the tray. Also, try rotating the paper 180°.

5. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

6. Make sure that the environmental specifications for the product are being met.

1. Turn over the paper in the tray. Also, try rotating the paper 180°.

2. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

3. Make sure that the environmental specifications for the product are being met.

4. Try printing to a different output bin.

1. Print a few more pages to see if the problem corrects itself.

2. Make sure that the environmental specifications for the product are being met.

3. Turn over the paper in the tray. Also, try rotating the paper 180°.

Vertical white lines

4. Make sure that paper is loaded correctly and all adjustments have been made. For

more information, see the product user guide.

5. Make sure that the type and quality of the paper you are using meet

HP specifications. See the product user guide.

6. If envelopes are creasing, try storing envelopes so that they lie flat.

1. Print a few more pages to see if the problem corrects itself.

2. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

3. The photosensitive drum might be scratched, or the developing roller might be

damaged. Replace the toner cartridge.

4. The laser beam window might be dirty. Clean the laser beam window on the laser/

scanner.

5. The fuser inlet guide might be dirty. Clean the guide.

6. The fuser film might be scratched or dirty. Replace the fuser.

7. The laser/scanner might be damaged. Replace the laser/scanner.

ENWW Solve image-quality problems 83

Table 2-6 Image defect examples (continued)

Problem Image example Solution

Horizontal white lines

Black page

Tire tracks

White spots on black or in the image

1. The photosensitive drum might be scratched, or the developing roller might be

damaged. Replace the toner cartridge.

2. The fuser film might be damaged. Replace the fuser.

1. The toner-cartridge ground or bias contacts might be dirty. Clean the contacts.

2. The primary charging roller might be defective. Replace the toner cartridge.

3. The high-voltage power supply might be damaged. Replace the high-voltage

power supply.

This defect typically occurs when the toner cartridge has far exceeded its estimated life.

a a

A A

b b

For example, if you are printing a very large quantity of pages with very little toner coverage.

1. The toner cartridge might need to be replaced.

2. Reduce the number of pages that you print with very low toner coverage.

1. Print a few more pages to see if the problem corrects itself.

2. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

Scattered lines

3. Make sure that the environmental specifications for the product are being met.

4. The toner cartridge might need to be replaced.

5. If the transfer roller is deformed or damaged, replace the roller.

6. The transfer roller shaft might be dirty (poor contact). Remove the transfer roller

and clean the shaft.

7. The high-voltage power supply might be damaged. Replace the high-voltage

power supply.

1. Make sure that the type and quality of the paper you are using meet

HP specifications. For more information, see the product user guide.

2. Make sure that the environmental specifications for the product are being met.

3. Turn over the paper in the tray. Also, try rotating the paper 180°.

4. Change the toner density. Open the Setup menu at the product control panel. and

then open the System Setup menu. Change the Print Density setting.

84 Chapter 2 Solve problems ENWW

HP m701, m706 Troubleshooting Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Theory of operation

Basic operation

Major systems

Product block diagram

Engine control system

DC controller

Low-voltage power supply (LVPS)

Overcurrent/overvoltage protection

Fuser control

Fuser-heater protective function

Fuser control functions

2 Solve problems

Solve problems checklist

Menu map

Troubleshooting process

Pre-troubleshooting checklist

Determine the problem source

Troubleshooting flowchart

Power subsystem

Power-on checks

Power-on troubleshooting overview

Control panel checks

Tools for troubleshooting

Engine self-test

Troubleshooting process for product not turning on

Diagrams

Block diagrams

Location of connectors

DC controller connections

Paper feed driver PCA connections

Duplex driver PCA connections

Plug and port locations

Locations of major assemblies

Switch locations

Sensor locations

500-sheet paper feeder accessory

Duplex unit

General timing chart

Circuit diagrams

Use HP Device Toolbox (Windows)

Internal print-quality test pages

Clean the paper path

Print the configuration page

Print quality troubleshooting tools

Repetitive defects ruler

Control panel menus

Setup Menu

HP Web Services

Reports menu

System Setup menu

Service menu

Network Setup menu

Quick Forms menu

Interpret control panel messages

Control panel message types

Control panel messages

Rear door open

49 Error, Turn off then on

50.x Fuser Error

51.XX Error

54.XX Error

55.X Error

57 Fan Error, Turn off then on

59.X Error

79 Error Turn off then on

Black Cartridge Low

Black Very Low

Cleaning

Device error, press OK

Front door open

Genuine HP supply installed

Invalid driver Press OK

Jam in Tray 1, Clear jam and then press OK

Load Tray 1 Press OK for available media

Load Tray 1 <TYPE> <SIZE>, Press OK to use available media

Load Tray 1, <PLAIN> <SIZE> / Cleaning mode, OK to start