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HP C8157A User's Guide - Page 39

Maintaining the printheads, To check printhead health, To print the print quality diagnostic - service manual

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Maintaining the printheads If printed characters are incomplete, or dots or lines are missing from printouts, this may be caused by clogged ink nozzles and you might need to clean the printheads. When the quality of printouts deteriorates, complete the relevant steps based on the following sequence: 1. Check the health of the printheads (see To check printhead health). 2. Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions (see To print the print quality diagnostic page). 3. If the color tints on printed pages have shifted visibly towards yellow, magenta, or blue, calibrate the color (see Calibrating the color). 4. Manually clean the printhead contacts. See To clean the printhead contacts manually. 5. Replace the printheads, if the problems persist after cleaning. See To replace the printheads. CAUTION HP is not responsible for damage to the printer that results from modifying the printheads. To check printhead health Use one of the following means to check the printhead health. If the status of any printhead is not good or fair, then perform one or more of the maintenance functions, or clean or replace the printhead. ● Configuration page: Print the configuration page on a clean sheet of white paper, and check the printhead health section. See Understanding the configuration page. ● Embedded Web server: Open the embedded Web server (see To open the embedded Web server). Click the Information tab and click Ink Supplies in the left pane. ● Toolbox (Windows): Open the Toolbox (see To open the Toolbox). Click the Information tab and click Printhead Health. To print the print quality diagnostic page Use the print quality diagnostic page to diagnose issues affecting the print quality of the printer. This will help you decide whether to run any maintenance tools to improve the print quality of your printouts. You can also view the ink level information, and the printhead health status on the page. ● Control panel: Press and hold (Power button), press (Cancel button) once, press (Resume button) 4 times, and release (Power button). ● Embedded Web server: Click the Settings tab, click Printer Services in the left pane, select PQ (print quality) diagnostic page from the drop-down list in the Print Quality section, and click Apply. ● Printer driver (Windows): Click the Services tab. For Windows 2000, Windows XP, and Windows Server 2003, click the Service this Device button (this option is available only if the ENWW Maintaining the printheads 31

Section	Page
Getting started	9
Finding other resources for the product	10
Accessibility	12
Understanding the printer parts	13
Front view	13
Control panel	14
Back view	15
Installing the accessories	17
Installing the duplex unit	18
Installing tray 2	19
Using the printer	21
Selecting print media	22
Tips for selecting and using print media	22
Understanding specifications for supported media	23
Understanding supported sizes	23
Understanding supported media types and weights	25
Setting minimum margins	25
Loading media	27
Configuring trays	29
Changing print settings	30
To change settings from an application for current jobs (Windows)	30
To change default settings for all future jobs (Windows)	30
To change settings (Mac OS)	30
Canceling a print job	31
Printing on both sides (duplexing)	32
Guidelines for printing on both sides of a page	32
To perform duplexing (Windows)	32
To perform automatic duplexing (Mac OS)	33
Printing on special and custom-sized media	34
To print on special or custom-sized media (Windows)	34
To print on special or custom-sized media (Mac OS)	34
Maintaining and troubleshooting	37
Replacing the ink cartridges	38
Maintaining the printheads	39
To check printhead health	39
To print the print quality diagnostic page	39
To align the printheads	41
To calibrate the linefeed	41
To clean the printheads	41
To clean the printhead contacts manually	42
To replace the printheads	44
Calibrating the color	45
Troubleshooting tips and resources	46
General troubleshooting tips	47
Resolving printing problems	48
Printer shuts down unexpectedly	48
All printer lights are on	48
Printer is not responding (nothing prints)	48
Printer does not accept printhead	49
Printer takes a long time to print	49
Blank page printed	50
Something on the page is missing or incorrect	50
Placement of the text or graphics is wrong	50
Poor print quality and unexpected printouts	52
Poor quality printouts	52
Meaningless characters print	52
Ink is smearing	53
Ink is not filling the text or graphics completely	53
Output is faded or dull colored	53
Colors are printing as black and white	54
Wrong colors are printing	54
Printout shows bleeding colors	54
Colors do not line up properly	54
Lines or dots are missing from text or graphics	54
Resolving paper-feed problems	55
Tray cannot be inserted	55
Another paper-feed problem is occurring	55
Resolving printer management problems	57
Embedded Web server cannot be opened	57
Troubleshooting installation issues	58
Problems printing an alignment page	58
Problems installing software	58
Problems connecting to a network	58
Problems connecting to a wired network	59
Problems setting up or using wireless communication	59
Clearing jams	62
To clear a jam	62
To avoid jams	64
Printer lights reference	65
Interpreting control panel lights	66
Interpreting network connector lights	70
Configuring and managing the printer	73
Managing the printer	74
Overview of printer management tasks	74
Monitor the printer	75
Administer the printer	75
Configure network settings	76
Overview of printer management tools	77
Embedded Web server	77
To open the embedded Web server	77
Embedded Web server pages	77
Toolbox (Windows)	78
To open the Toolbox	78
Toolbox tabs	78
HP Printer Utility (Mac OS)	79
To open the HP Printer Utility	79
HP Printer Utility panels	80
Network Printer Setup Utility (Mac OS)	80
HP Web Jetadmin software	80
HP Instant Support	81
Security and privacy	81
To gain access to HP Instant Support	82
myPrintMileage	82
Understanding the configuration page	83
Configuring the printer (Windows)	87
Direct connection	87
To install the software before connecting the printer (recommended)	87
To connect the printer before installing the software	88
To share the printer on a locally shared network	88
Network Connection	89
To install a network printer	89
To install the printing software on client computers	90
To install the printer driver using Add Printer	90
Configuring the printer (Mac OS)	91
To install the software for network or direct connection (Mac OS X (10.2, 10.3, 10.4))	91
To share the printer on a locally shared network (Mac OS X (10.2, 10.3, 10.4))	91
Setting up the printer for wireless communication (HP Officejet Pro K550dtwn)	93
Understanding 802.11 wireless network settings	93
To set up the printer on an ad hoc network (Mac OS)	95
To set up the printer for wireless communication (Windows)	95
To set up wireless communication using SecureEasySetup (SES)	96
To set up wireless communication for multiple printers (Windows only)	97
To turn off wireless communication	97
Guidelines for reducing interference on a wireless network	98
Guidelines for ensuring wireless network security	98
Uninstalling the printer software	100
To uninstall the printer software (Windows)	100
To uninstall the printer software (Mac OS)	100
HP supplies and accessories	103
Ordering printing supplies online	104
Accessories	105
Supplies	106
Support and warranty	107
Obtaining electronic support	108
Obtaining HP telephone support	109
Before you call	109
Telephone support numbers	109
Hewlett-Packard limited warranty statement	113
Extent of limited warranty	113
Limitations of warranty	114
Limitations of liability	114
Local law	114
HP Inkjet Supplies - Warranty Quick Reference	116
Is your product covered under warranty?	116
HP Inkjet Supplies Expiration	116
How do you return a product?	116
Printer specifications	117
Regulatory information	123
FCC statement	124
Shielded cables	124
Exposure to radio frequency radiation	124
Other regulatory information	125
Regulatory information for wireless products	126
Notice to users in Canada/Note à l'attention des utilisateurs Canadien	126
Notice to users in Brail/Notificação de Normas de Uso de Dispositivos Sem Fio do Brasil	126
Notice to users in Italy	126
Notice to users in France	126
Notice to users in the European Union	127
Declaration of conformity	128
Environmental sustainability program	130
Reduction and elimination	130
Power consumption	130
Material safety data sheets	130
Recycling	131
Product packaging	131
Plastics	131
Disposal of waste equipment by users in private households in the European Union	131
HP products and supplies	131

Match case Limit results 1 per page

Maintaining the printheads

If printed characters are incomplete, or dots or lines are missing from printouts, this may be caused

by clogged ink nozzles and you might need to clean the printheads.

When the quality of printouts deteriorates, complete the relevant steps based on the following

sequence:

Check the health of the printheads (see

check

printhead

health

Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem

areas, and perform the recommended actions (see

the

quality

diagnostic

page

If the color tints on printed pages have shifted visibly towards yellow, magenta, or blue, calibrate

the color (see

Calibrating

the

color

Manually clean the printhead contacts. See

clean

the

printhead

contacts

manually

Replace the printheads, if the problems persist after cleaning. See

replace

the

printheads

CAUTION

HP is not responsible for damage to the printer that results from modifying the

printheads.

To check printhead health

Use one of the following means to check the printhead health. If the status of any printhead is not

good or fair, then perform one or more of the maintenance functions, or clean or replace the printhead.

●

Configuration page:

Print the configuration page on a clean sheet of white paper, and check

the printhead health section. See

Understanding

the

configuration

page

●

Embedded Web server:

Open the embedded Web server (see

open

the

embedded

Web

server

). Click the

Information

tab and click

Ink Supplies

in the left pane.

●

Toolbox (Windows):

Open the Toolbox (see

open

the

Toolbox

). Click the

Information

tab

and click

Printhead Health

To print the print quality diagnostic page

Use the print quality diagnostic page to diagnose issues affecting the print quality of the printer. This

will help you decide whether to run any maintenance tools to improve the print quality of your

printouts. You can also view the ink level information, and the printhead health status on the page.

●

Control panel:

Press and hold

(

Power

button), press

(

Cancel

button) once, press

(

Resume

button) 4 times, and release

(

Power

button).

●

Embedded Web server:

Click the

Settings

tab, click

Printer Services

in the left pane, select

PQ (print quality) diagnostic page

from the drop-down list in the

Print Quality

section, and

click

Apply

●

Printer driver (Windows):

Click the

Services

tab. For Windows 2000, Windows XP, and

Windows Server 2003, click the

Service this Device

button (this option is available only if the

ENWW

Maintaining the printheads