HP Designjet T7100 service manual

4.7 (10)

DESIGNJET T7100 and T7100 Monochrome printer series

Service manual

© 2010 Hewlett-Packard Development

Legal notices

Company, L.P.

This document contains proprietary

 

1st edition

information that is protected by copyright.

 

All rights are reserved. No part of this

 

document may be photocopied, reproduced,

 

or translated to another language without

 

the prior written consent of Hewlett-Packard

 

Company.

Notices

Warranty

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

Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

WARNING

The procedures described in this manual are to be performed by HP-qualified service personnel only.

Electrical shock hazard

Serious shock hazard leading to death or injury may result if you do not take the following precautions:

Ensure that the AC power outlet (mains) has a protective earth (ground) terminal.

Disconnect the printer from the power source prior to performing any maintenance.

Prevent water or any other liquids from running onto electrical components or circuits, or through openings in the enclosure.

Electrostatic discharge

Refer to the beginning of Service tests and utilities on page 89 in this manual for precautions you should take to prevent damage to the printer circuits from electrostatic discharge.

Safety symbols

General definitions of safety symbols are given immediately after the table of contents.

WARNING

The Warning symbol calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a Warning symbol until the indicated conditions are fully understood and met.

CAUTION

The Caution symbol calls attention to an operating procedure, practice, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond a Caution symbol until the indicated conditions are fully understood and met.

Customer Assurance

Customer Experience Section

Large Format Printing Division

Hewlett-Packard Española, S.A.

Avenida Graells, 501

08174 Sant Cugat del Vallès

Spain

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Notices

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Using this manual

Purpose

This service manual contains information necessary to test, calibrate and service:

HP Designjet T7100 printer (Models CQ105A, CQ106A)

HP Designjet T7100 Monochrome printer (Models CQ101A, CQ102A) For information about using these printers, refer to the Using your printer manual.

Readership

The procedures described in this service manual are to be performed by HP certified service personnel only.

Part Numbers

Part numbers for printer options, accessories and service parts are located in Parts and diagrams on page 186.

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Using this manual

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Table of contents

1

Printing tips and tricks ......................................................................................................

1

 

Paper loading ..........................................................................................................................

2

 

Paper-advance calibration .........................................................................................................

2

 

Printhead alignment ..................................................................................................................

3

 

Use of multiple rolls ..................................................................................................................

3

2

Troubleshooting ................................................................................................................

5

 

Printer education and training ....................................................................................................

7

 

Firmware update ......................................................................................................................

7

 

Print-quality troubleshooting .......................................................................................................

8

 

Troubleshooting system error codes ............................................................................................

8

 

Performing a service test on a failed assembly .............................................................................

8

 

Performing the necessary service calibrations ..............................................................................

8

 

The printer does not power on ...................................................................................................

9

 

The printer hangs during printing and displays ‘processing’ ..........................................................

9

 

The printer continuously rejects printheads .................................................................................

10

 

A new maintenance cartridge is incorrectly detected as ‘used’ .....................................................

10

 

Cover sensors are not working .................................................................................................

10

 

The Line Sensor has problems detecting paper ...........................................................................

10

 

How to remove the Left Hub when the actuator is broken ............................................................

10

 

Troubleshooting paper jams and printhead crashes ....................................................................

11

 

Troubleshooting shutdowns ......................................................................................................

12

 

Vacuum suction much lower at high altitudes .............................................................................

13

 

Banding at variable extreme environmental conditions ................................................................

13

 

Printhead crashes/smears on high-density prints using coated paper ............................................

14

 

Banding due to ink cartridge replacement while printing .............................................................

14

 

34" Rice Paper not supported ..................................................................................................

14

 

Worm marks on HP Coated Paper with light area fills ................................................................

15

 

Solving paper-handling problems .............................................................................................

15

 

Difficult to load paper: “Too much skew” ..................................................................................

15

 

How to read the power switch LEDs ..........................................................................................

15

 

How to read the Formatter LEDs ...............................................................................................

16

 

If the front panel turns on and then stops ...................................................................................

19

 

How to interpret the Service Information Pages ..........................................................................

19

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When the main window is open and the printer is printing (safety compliance)

.............................. 27

 

How to troubleshoot the 79:04 system error ..............................................................................

28

3

System error codes .........................................................................................................

41

 

What to do if the front panel is blank .......................................................................................

42

 

System error codes .................................................................................................................

42

 

Explanation of system error codes and warnings ........................................................................

42

 

Continuable and non-continuable error codes ............................................................................

45

4

Ink supplies ....................................................................................................................

76

 

What are ink supplies? ...........................................................................................................

77

 

General information about the ink supplies ................................................................................

79

 

General precautions when handling ink supplies ........................................................................

79

 

Priming the ink system .............................................................................................................

80

 

When should you replace the ink supplies? ...............................................................................

80

 

Obtaining Ink Cartridge information .........................................................................................

81

 

Obtaining Printhead information ..............................................................................................

81

 

Summary of solving ink supplies problems .................................................................................

85

 

Troubleshooting Printhead error codes ......................................................................................

86

 

Carriage Interconnect Wiper ...................................................................................................

87

 

Warranty information for ink supplies .......................................................................................

87

5

Service tests and utilities .................................................................................................

89

 

Introduction ...........................................................................................................................

90

 

Diagnostics—self test ..............................................................................................................

90

 

Phone support ........................................................................................................................

90

 

Service tests (diagnostics) ........................................................................................................

90

 

Entering the Service Tests menu ................................................................................................

91

 

Service utilities .....................................................................................................................

107

6

Service calibrations .......................................................................................................

122

 

Service calibrations ..............................................................................................................

123

 

Entering the Service Calibrations menu ...................................................................................

124

7

Print quality .................................................................................................................

145

 

Initial print-quality troubleshooting actions ...............................................................................

146

 

Troubleshooting tools ............................................................................................................

147

 

How to use the Image Quality Service Diagnostic Print .............................................................

151

 

Print-quality issues by symptom ..............................................................................................

168

 

Working with other commercially available papers ..................................................................

181

8

Parts and diagrams ......................................................................................................

186

 

Printer .................................................................................................................................

187

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Stacker ...............................................................................................................................

205

9

Printer part removal and installation ............................................................................

215

 

Service part order ................................................................................................................

216

 

Disassembly order ................................................................................................................

219

10

Stacker part removal and installation .........................................................................

412

 

Right Cover .........................................................................................................................

413

 

Left Cover ...........................................................................................................................

415

 

Top Cover ...........................................................................................................................

416

 

Lower Front Cover ................................................................................................................

419

 

Pinchwheels ........................................................................................................................

424

 

Drive Motor .........................................................................................................................

425

 

Front Cover Sensor ...............................................................................................................

427

 

Safety Temperature Sensor ....................................................................................................

429

 

Temperature Sensor PCA ......................................................................................................

431

 

Media Sensor ......................................................................................................................

433

 

Extension Tray .....................................................................................................................

435

 

Receiving Tray .....................................................................................................................

437

 

Printer Interlocks ...................................................................................................................

438

 

Paper Infeed Platen ..............................................................................................................

440

 

Electronics PCA ...................................................................................................................

441

 

Power Supply Unit ................................................................................................................

444

 

Heating Lamp ......................................................................................................................

448

 

Heat Roller ..........................................................................................................................

452

 

Transport Belt ......................................................................................................................

454

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Preventive maintenance .............................................................................................

461

 

Moisture on the printer ..........................................................................................................

462

 

Noisy Carriage Bushing ........................................................................................................

462

 

Belt swelling ........................................................................................................................

462

 

General cleaning .................................................................................................................

462

 

Clean the Drive Roller and Overdrive .....................................................................................

462

 

Clean the Platen ...................................................................................................................

463

 

Clean the Encoder Strip ........................................................................................................

464

 

Clean the Paper-advance Sensor window ...............................................................................

466

 

Apply oil to the Overdrive .....................................................................................................

466

 

Lubricate the Carriage Assembly ............................................................................................

467

 

Scheduled maintenance ........................................................................................................

468

 

Preventive Maintenance Kits ..................................................................................................

468

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1 Printing tips and tricks

Paper loading on page 2

Paper-advance calibration on page 2

Printhead alignment on page 3

Use of multiple rolls on page 3

Printing tips

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1

tips Printing

Paper loading

Rolls with 3-inch cores cause fewer ink smears and paper jams, and the finished prints stack better, in the bin or the HP stacker.

To avoid selecting the wrong paper name when loading, we recommend hiding paper types that you never use, which can be done from the HP Utility.

Paper-advance calibration

The printer will automatically start paper-advance calibration in the following situations.

A new type of plain or coated paper is loaded for the first time. Each type is calibrated separately: for instance, there is one calibration for plain paper and another for HP Universal Inkjet Paper.

A new matte-black printhead is installed.

The firmware is updated.

Calibration adjusts the paper advance to reduce banding and line continuity issues for each paper type (including all different roll sizes). It is important to use a different front-panel name for each paper type. For example, if a third-party plain paper A is loaded as “plain” in the front panel, and a third-party paper B is also loaded as “plain”, the printer may not be optimized for paper B. We recommend in this case using a different name for B, for instance “HP Universal Inkjet Paper”.

Factory paper-advance

OMAS calibration

Automatic paper-

Manual paper-advance

 

advance calibration

calibration

calibration

 

 

 

 

 

 

 

Paper-advance settings

This is a dynamic correction

This is an offset applied to the

This is an offset applied to the

specific to each paper

applied to every advance

paper advance that takes into

other paper-advance

category. This is a baseline

depending on the OMAS

account the printheads and

calibrations.

for the printer, to which the

readings. It is applied to the

the specific paper loaded.

 

other calibrations add a

specific paper loaded.

 

 

correction.

 

 

 

 

 

 

 

Hard-coded in printer

 

Automatically triggered by

Triggered by user only

 

 

printer or by user

 

 

 

 

 

Used with paper types, such

Used with paper types that

Mandatory for fiber-based

May be used by customers to

as films, with which OMAS

are compatible with OMAS.

papers printing with relatively

fine-tune the paper advance.

cannot be used.

 

few passes. Does not work

Also useful for natural tracing

 

 

with natural tracing paper.

paper, with which automatic

 

 

Optional for other papers,

calibration does not work.

 

 

such as heavyweight or

 

 

 

glossy.

 

 

 

 

 

The paper advance is normally managed by a combination of automatic paper-advance calibration and OMAS tracking of the paper movement.

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Printhead alignment

For printhead alignment to work best with all kinds of plain paper, it is recommended to perform the alignment using HP Coated or HP Bright White papers. Vertical line straightness with other plain papers (such as non-HP plain papers and recycled papers) will improve.

The printheads must be aligned whenever a new printhead is installed, and should be aligned after any paper jam that may have moved the printhead slightly.

Use of multiple rolls

There are various ways to set up the printer for multi-roll printing, using the roll-switch and papermismatch policies. Here are some examples.

1.Same paper type and different sizes loaded: this is typical when printing line drawings in standard sizes. For instance, two rolls with A0 size plain paper and one roll with A1 size plain paper. Driver settings: paper type to Any and roll to Any.

Roll switching policy:

Minimize paper waste: Recommended setting for this workflow. With this setting, roll switch takes precedence over autorotate. This setting minimizes the paper wasted. For instance, if an A2 portrait is sent, the printer autorotates the A2 to fit it onto the A1 roll in landscape. But, if a A1 portrait is sent and the active roll is A0, the printer switches to an A1 roll to save paper.

Minimize roll changes: Not recommended except for very specific situations, when the customer wants to consume a roll faster. Autorotate takes precedence over roll switch, which reduces overall printing speed.

Use roll with less paper: Not recommended in this workflow. This setting ensures that the roll with least paper is used up before changing to another.

Paper mismatch policy:

Print anyway: In this case, for instance, if a A0 page is sent and no A0 roll is available, the printer uses an A1 roll and clips the image. Recommended for a workgroup environment in which users share one printer.

Put job on hold: The printer saves the A0 page on hold in the queue and prints the next pages in the queue that can be printed. To reprint the A0 page, the customer needs to access the queue from the front panel or the Embedded Web Server. This setting is confusing in a workgroup enviornment because distributed customers may not know how to access the queue, but it can be useful in a centralized print environment to avoid clipping.

Pause printer to load paper: The printer stops printing completely. This could be useful for a centralized printing environment where project print order must be maintained—for instance, when a project is a mix of A0, A1 and A2 in a given order.

Printing tips

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Printhead alignment

3

tips Printing

For a workgroup environment this would not be recommended. Can be useful in a centralized print environemnt to will avoid clipping and preserve the printing order.

2.The same setup as example 1. This time, the customer does not want to waste paper, but he does not want the printer to stop if the document size does not match the paper size.

Roll switching policy: Match exact size

Paper mismatch policy: Put job on hold

3.Three rolls loaded, two with plain and one with glossy paper: this is typical when printing line drawings of standard sizes and where some high-density printing is requested. Roll 1 with A0 plain, Roll 2 with A1 plain and Roll 3 with glossy. Driver settings: paper type to Any and roll to Any. To print on glossy paper, set paper type to Glossy paper or roll to Roll 3.

Roll switching policy: Minimize paper waste

Paper mismatch policy: Print anyway for workgroups and Put job on hold or Pause printer to load paper for centralized printing

Protect roll 3, to avoid printing with glossy paper unless the roll or paper type has been explicitly selected.

4.The same setup as example 3. This time, the customer does not want to waste paper, but he does not want the printer to stop if the document size does not match the paper size.

Roll switching policy: Match exact size

Paper mismatch policy: Put job on hold

5.The same setup as example 3. This time, the customer is not concerned about wasting paper, and he does not want the printer to stop.

Roll switching policy: Minimize paper waste

Paper mismatch policy: Print anyway

6.Working with HP IP Pro. This is a solution specifically designed for centralized environments managed by an operator. With HP IP, the jobs to be printed are selected one by one, previewed and assigned to a specific roll to print. So no automatic roll selection is used in this case. When a roll is out of paper, the queue stops, waiting for the operator to load paper, to ensure correct page order.

Roll switching policy

Paper mismatch policy

Result

 

 

 

Match exact size

Print anyway

Prints always. If the loaded paper is narrower than the

 

 

document to be printed, the document is clipped.

 

 

 

 

Put job on hold

Puts the job on hold if the document width does not match any

 

 

of the loaded rolls.

 

 

 

 

Pause printer to load paper

Stops printing if the document width does not match any of

 

 

the loaded rolls.

 

 

 

Minimize paper waste

Print anyway

Prints always. If the loaded paper is narrower than the

 

 

document to be printed, the document is clipped.

 

 

 

 

Put job on hold

Puts the job on hold if the document is wider than any of the

 

 

loaded rolls.

 

 

 

 

Pause printer to load paper

Stops printing if the document is wider than any of the loaded

 

 

rolls.

 

 

 

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Chapter 1 Printing tips and tricks

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2 Troubleshooting

Printer education and training on page 7

Firmware update on page 7

Print-quality troubleshooting on page 8

Troubleshooting system error codes on page 8

Performing a service test on a failed assembly on page 8

Performing the necessary service calibrations on page 8

The printer does not power on on page 9

The printer hangs during printing and displays ‘processing’ on page 9

The printer continuously rejects printheads on page 10

A new maintenance cartridge is incorrectly detected as ‘used’ on page 10

Cover sensors are not working on page 10

The Line Sensor has problems detecting paper on page 10

How to remove the Left Hub when the actuator is broken on page 10

Troubleshooting paper jams and printhead crashes on page 11

Troubleshooting shutdowns on page 12

Vacuum suction much lower at high altitudes on page 13

Banding at variable extreme environmental conditions on page 13

Printhead crashes/smears on high-density prints using coated paper on page 14

Banding due to ink cartridge replacement while printing on page 14

34" Rice Paper not supported on page 14

Worm marks on HP Coated Paper with light area fills on page 15

Solving paper-handling problems on page 15

Difficult to load paper: “Too much skew” on page 15

How to read the power switch LEDs on page 15

How to read the Formatter LEDs on page 16

Troubleshooting

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If the front panel turns on and then stops on page 19

How to interpret the Service Information Pages on page 19

When the main window is open and the printer is printing (safety compliance) on page 27

How to troubleshoot the 79:04 system error on page 28

Troubleshooting

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Chapter 2 Troubleshooting

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Printer education and training

Before any attempt is made to troubleshoot the printer, you must have the relevant training on the HP Designjet T7100 printer series. If you are not trained on this printer, please contact HP Education or HP Training to enquire about becoming ‘HP Service Qualified’ for this printer.

Firmware update

The first step to take when trying to clear an error with the printer is to check that the firmware installed in the printer is the latest available. Firmware updates often include fixes for common problems, and simply updating the firmware can often resolve the problem. New firmware can be downloaded here: http://www.hp.com/go/designjet/downloads

USB firmware update

If it is not possible to perform a firmware update using the Embedded Web Server (for instance, if the printer has a System Error and the Embedded Web Server is inaccessible), it is still possible to do it using a USB flash drive.

1.Turn off the printer.

2.Ensure that your USB flash drive contains a valid FMW firmware file and no other files.

3.Connect the USB flash drive to the USB host port on the Formatter.

4.Turn on the printer and follow the instructions on the front panel.

Forced firmware update

When the printer is started for the first time, it may automatically request a firmware update in order to fix some known issues. You can respond in one of the following ways.

Use the USB flash drive provided in the box with the printer.

When a firmware update is requested, you should find a USB flash drive in the box, containing the new FMW firmware file. Follow the instructions in the flier accompanying the USB flash drive.

NOTE: The USB flash drive is provided only to update the printer's firmware. No other uses of the USB flash drive are supported.

NOTE: If the USB flash drive is not in the printer box, or fails to work properly, then download the firmware instead.

Download the FWM firmware file from the HP Web site.

Store the file in a standard USB flash drive with no other files. Connect the flash drive to the formatter's USB host port to perform the firmware update, following the instructions on the front panel.

Skip the firmware update.

If you cannot find the USB flash drive and you have no Internet connection, you can skip the forced firmware update temporarily by pressing the OK key on the front panel three times, and the printer will continue with the initialization sequence. Make sure that the firmware update is performed later. The printer will request the firmware update every time that it starts, until the update is performed.

Troubleshooting

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Printer education and training

7

Troubleshooting

Print-quality troubleshooting

Whenever a print-quality problem appears, it is advisable to print the Diagnostic Print to help diagnose the problem. The Diagnostic Print will help you differentiate between possible printhead errors and other problems such as incorrect front-panel selection, driver or RIP configuration or mechanical problems. For more information on solving print-quality problems, see Print quality on page 145.

Troubleshooting system error codes

System error codes on page 41 contains a list of system error codes and their respective descriptions and recommended corrective actions. Try only one recommended action at a time and check whether the error code has disappeared.

If you have an error code which is not documented in this Service Manual or you have an error which you cannot resolve, then report the error to the HP Response Center or the nearest HP Support Office. When reporting the error, have the following information ready:

Model and serial number of the printer.

Which firmware revision the printer is using (see Note below). Check firmware in Utilities / Statistics / Code rev.

The complete error number.

NOTE: When reporting the system error code, make sure that you supply the full error code and the firmware version. Without this information, HP support personnel cannot help you.

The service configuration print.

The current configuration sheet.

Which software application the customer is using (name, version, and so on).

Performing a service test on a failed assembly

If possible, always perform a Service Test on the component/assembly that you are about to replace, just to make sure that is the component/assembly that has failed.

NOTE: If the test on that component/assembly passes, you should NOT replace it.

For information on the Service Tests and how to use them, see Service tests and utilities on page 89.

Performing the necessary service calibrations

Is the printer calibrated correctly after replacing a component? For information on the Service Calibrations and how to use them see Service calibrations on page 122.

NOTE: Remember that certain Calibrations are required even if an Assembly has been disassembled to gain access to another Assembly or Component.

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Chapter 2 Troubleshooting

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The printer does not power on

To resolve printer power up problems, do the following.

1.Check that the power cord is connected correctly to the printer and to the power socket.

2.Check that the power switch at the rear of the printer is in the on position.

3.Check that the front-panel cable is correctly connected to the Electronics Module. Also make sure that the front-panel cable is not damaged.

4.Check to see if any of the LEDs on the power switch are on. If any of the LEDs are on, then see How to read the power switch LEDs on page 15 for more information.

The printer hangs during printing and displays ‘processing’

It has been seen under certain circumstances that the printer hangs whilst printing, this may happen immediately after printing, or only a partial print. In some cases when this occurs if the machine is restarted a system error 79:04 is displayed, although restarting again appears to clear this error. After this point, although the printer displays that it is in the “Ready” state, attempting to print anymore plots will once again hang the printer, including internal demo plots.

79:04

Cause

Solution

The reason for this error is that a large spooled file (11 GB for example) has been sent to the printer and has been placed in the disk partition which is related to the print queue. The file completely fills up all the disk space, because of this it will never successfully print, and so the file remains in the disk partition. Even after restarting the printer the file remains, subsequent print requests also fail as there is not sufficient space available in the partition to process anything else.

Perform the following few steps to clear the error.

1.Check that the firmware is the latest available

2.Turn Off and ON the printer.

3.Set Queue to OFF.

4.Set ‘When Start Printing’ to ‘Immediately’.

Please guide the customer through the front panel of the printer to set up the “Queue” to “OFF” and “When Start Printing” to “Immediately”.

Wipe disk solution

If the above procedure does not clear the error, use the wipe the hard disk procedure (Unsecure mode) See Disk Wipe DoD 5330.22’M on page 116. This will delete all previous jobs, ICC profiles and paper presets that were present on the hard disk. This procedure has an advantage for the customer in that it solves the issue without the need to wait for an onsite engineer to come to their premises and remove and replace the HDD (which would also have the same affect of deleting all the previous jobs, ICC profiles and paper presets). The whole procedure should not take more than 30-35 minutes.

Important step is that you need to select the Unsecure mode.

Troubleshooting

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The printer does not power on

9

Troubleshooting

The printer continuously rejects printheads

To resolve printhead rejection problems, do the following.

1.Clean the flex contacts on the Printhead and in the Carriage Assembly using the Carriage Interconnect Wiper (see Carriage Interconnect Wiper on page 87) and try again.

2.If all the Printheads are rejected (for each Printhead, the status message on the Front Panel does

not show 'OK') then perform the Carriage Assembly Test Carriage Assembly test on page 95..

A new maintenance cartridge is incorrectly detected as ‘used’

This can occur if the printer has detected the previous Maintenance Cartridge was nearly full, and when a new Maintenance Cartridge is installed the Front Panel displays an error that the cartridge is ‘used’. To resolve the problem, manually reset the counter of the Maintenance Cartridge Reset Life Counters on page 112.

Cover sensors are not working

To resolve cover sensor problems, do the following.

1.Check that the cable for the faulty sensor is not damaged and is connected correctly.

2.Replace the faulty sensor.

The Line Sensor has problems detecting paper

To resolve Line Sensor paper detection problems, do the following.

1.Check the type of paper that is being used: the Line sensor may have problems detecting transparent paper or some types of Non-HP paper. Try loading white HP paper into the printer and check whether the Line Sensor detects it.

2.Excessive ink deposits on the Platen surface can fool the sensor by reflecting the light. Clean the Center Platen.

3.Clean the Encoder Strip See Clean the Encoder Strip on page 464.

4.The Line Sensor is not calibrated correctly. Perform the Line Sensor Calibration See Line Sensor calibration on page 129.

5.The Line Sensor is damaged or faulty. Replace the Line Sensor See Line Sensor Assembly on page 297.

How to remove the Left Hub when the actuator is broken

You need a standard 90º Torx/Allen key(Torx T10 or Allen 2.5).

10 Chapter 2 Troubleshooting

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HP Designjet T7100 service manual

1.Insert the key about 20 mm between the sheet-metal and plastic parts.

2.Pull the key to the left to release the brake.

Troubleshooting

Troubleshooting paper jams and printhead crashes

NOTE: If you were using HP Coated Paper when the problem occurred, see also Printhead crashes/ smears on high-density prints using coated paper on page 14.

Paper jams and printhead crashes are grouped together because in many cases a paper jam causes the paper to lift up into the Carriage path and cause a printhead crash, which means that many paper jams are reported as printhead crashes.

Question

Answer

 

 

Did the paper jam occur when loading paper?

If paper jams have occurred previously, some pieces of paper

 

may still be stuck in the paper path. Clear the paper path.

 

NOTE: Customers often store used rolls without protecting

 

them from office environmental conditions; when exposed to

 

high humidity, the paper edges tend to curl. This curling can

 

cause paper jams when paper is loaded by feeding paper in

 

without lifting the Media Lever. In these conditions, to avoid

 

paper jams, the recommendation is to load paper by lifting

 

the Media Lever and aligning the paper manually, following

 

the instructions on the front panel.

 

 

Is the customer using non-HP paper?

The use of non-HP paper can easily be the cause of paper

 

jams and printhead crashes—especially printhead crashes,

 

because HP paper is specially formulated to avoid cockle, one

 

of the primary causes of head crashes. If the paper is not HP-

 

approved, advise the customer to use HP paper and check to

 

see if the problem is now solved.

 

 

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Troubleshooting paper jams and printhead crashes

11

Troubleshooting

TIP: When clearing a paper jam, sometimes paper is stuck in the paper path. To clear this, you must lift the Media Lever and insert thicker paper into the paper path to push out the paper that is still stuck there.

Troubleshooting shutdowns

If a shutdown occurs, you will get the message “Switch Power Off” followed by one of these messages:

Check Maintenance Cartridge Path

Check Paper Path

Check Printhead Path

NOTE: A shutdown in each path will require different steps to resolve the problem as explained below. In each case, make sure that you power off the printer before trying to resolve the problem.

Also check that the Rewinder Motor moves easily (without friction) with the printer turned off.

Maintenance cartridge path

Open the right door of the printer and check for any visible obstacles restricting the movement of the Service Station. Manually move the Service Station, checking for smooth and free movement.

Paper path

To resolve paper path problems, do the following.

1.Open the Window and check for any visible obstacles restricting the movement of the Drive Roller. Make sure that the mylar is not damaged. If there is a wrinkled mass of paper inside the paper path, lift the Pinch wheels (using the Paper Load Handles) and clear the obstruction.

2.If this shutdown happens at the end of a Roll of Paper, it could be because the paper is stuck firmly to the Roll. Lift the Pinch wheels (using the Paper Load Handles) and pull the paper clear.

3.Replace the spindle if broken.

4.Perform the Paper Drive Test to obtain further information on the problem Paper Drive test on page 92.

Printhead path

When a shutdown occurs in the Printhead path, you will get the message “Switch Power Off / Check Printhead Path (*). The (*) will be a number, which will give an indication on where the failure occurred.

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PWM shutdown

To resolve a PWM shutdown, do the following.

1.Clean Slider Rods and Apply Oil along the complete axis of the Slider Rods. After applying the

Oil, perform the Scan-Axis Test See Scan Axis test on page 92 and check that the values are within the given limits.

2.Clean the Encoder Strip See Clean the Encoder Strip on page 464.

3.Perform the Scan-Axis Test to obtain further information on the problem Scan Axis test on page 92.

Velocity shutdown

To resolve a velocity shutdown, do the following.

1.Open the Window and check for any visible obstacles restricting the movement of the Carriage Assembly. Try and move the Carriage Assembly manually, checking for smooth and free movement.

2.Check that the Encoder Strip is clean. If necessary, clean Encoder Strip using a damp cloth.

Energy shutdown

To resolve an energy shutdown, do the following.

1.Clean Slider Rods and Apply Oil along the complete axis of the Slide Rods. After applying the

Oil, perform the Scan-Axis Test See Scan Axis test on page 92 and check that the values are within the given limits.

2.Clean the Encoder Strip See Clean the Encoder Strip on page 464.

3.Perform the Scan-Axis Test to obtain further information on the problem Scan Axis test on page 92.

Vacuum suction much lower at high altitudes

At altitudes above 3,000 meters, the vacuum force holding down the paper will be lower, therefore the paper will not be held in place properly causing:

Ink Smearing on the Paper.

Printhead crashes against the Paper.

Roll Paper loading problems (low probability).

Banding at variable extreme environmental conditions

NOTE: This problem is only applicable if the OMAS is disabled.

Since the Accuracy Calibration has been done at normal environmental conditions, printing in extreme environmental conditions will cause banding because the advance of the Drive Roller does not

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correspond to the same conditions that the calibration was done in. To solve the problem, perform the Accuracy Calibration in the new environmental conditions (see Using your printer).

Printhead crashes/smears on high-density prints using coated paper

 

High density prints can cause cockle mainly on HP Coated Paper. This causes two main problems:

 

1. Cockling in the borders - Because the printer places too much ink on the Coated Paper, the

 

Troubleshooting

borders of the print become raised, causing the Printhead to crash against the paper. To solve the

problem, try the following.

 

 

● Change the paper margins to 15mm, either in the Front Panel or in the Driver. If the customer

 

is printing PostScript images, send them a PPD file containing the extended margins of

 

15mm.

 

2. Cockling within the print - If the printer places too much ink within the print, the paper starts to

 

ripple, causing the Printhead to smear against the paper. To solve the problem, try the following.

 

● Check in the Front Panel if Ink Limiting is ON or OFF. If Ink Limiting is OFF, turn it ON.

 

 

● Never use HP Coated Paper for High Density prints. As a substitute use HP Heavy Coated

 

Paper.

 

Banding due to ink cartridge replacement while

 

printing

A user has removed the Ink Cartridge while the printer was printing, which has caused the printer to stop. If the user does not replace the Ink Cartridge immediately, when the printer starts to print again, a band will appear in the position where the printing restarted. This is because the wet ink interacts with the dried ink on the paper causing the band to appear. To solve the problem, try the following.

Do NOT remove the Ink Cartridge while the printer is Printing. Only replace/remove Ink Cartridges in between Prints.

If the Ink Cartridge was replaced due to the “Empty” status on the Front Panel, then advise the customer to replace the Ink Cartridge when the “Very Low” status is showing on the Front Panel.

Reprint the file (without remove the Ink Cartridge).

34" Rice Paper not supported

Roll width is 34" (non-standard), and the pinch wheels can't control the edge of the paper, causing ink smears and printhead crashes.

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Worm marks on HP Coated Paper with light area fills

Light bands (S-shaped) in the direction of the media axis when light area fills are printed, causing an unacceptable print-quality defect.

Print the Service Configuration Print and check whether the ambient humidity is very low (below 30%). Increasing humidity may help to reduce the severity of the problem.

NOTE: The paper is causing the problem and not the printer. Do not attempt to replace printer parts to solve this problem.

Solving paper-handling problems

The front panel keeps indicating that paper Is misaligned or incorrectly positioned.

The roll may be loaded the wrong way. The paper should load over the roll toward you.

Check that the paper is correctly loaded onto the spindle.

The paper may be loaded at an angle. The right-hand edge must be aligned with the blue line on the Print Platen.

NOTE: Ensure that the paper is wrapped tightly on the roll. This is a very important step to remember because if this is not done, the paper may be loaded at an angle, causing the paper to be rejected.

The Line Sensor may be malfunctioning. See The Line Sensor has problems detecting paper on page 10.

Difficult to load paper: “Too much skew”

If you encounter a high failure rate when loading paper and the front panel reports “Too much skew” it is likely that:

The encoder strip must be cleaned (this can be carried out by the customer using the User Maintenance Kit).

The Line Sensor must be cleaned.

The Blue Line calibration must be performed. See Platen blue line calibration on page 138.

How to read the power switch LEDs

In certain circumstances, the LEDs located on top of the power switch (located at the rear of the printer) indicate the status of power supply to the printer.

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