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HP Color LaserJet Pro M280-M281 User Guide - Page 136

Resolving print quality problems, Introduction

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Resolving print quality problems ● Introduction ● Troubleshoot print quality problems Introduction The following information provides troubleshooting steps for solving image defect issues, including the following defects: ● Light print ● Gray background or dark print ● Blank pages ● Black pages ● Dark or light bands ● Dark or light streaks ● Missing toner ● Skewed images ● Colors that do not align ● Curled paper Troubleshoot print quality problems Table 9-1 Image defects table quick reference Defect Defect Table 9-2 Light print on page 126 Table 9-3 Gray background or dark print on page 127 Defect Table 9-4 Blank page - No print on page 127 124 Chapter 9 Solve problems ENWW

Section	Page
Printer overview	13
Printer views	14
Printer front view	14
Printer back view	15
Control-panel view	16
Home screen layout	17
How to use the touchscreen control panel	18
Printer specifications	19
Technical specifications	19
Supported operating systems	19
Mobile printing solutions	21
Printer dimensions	22
Power consumption, electrical specifications, and acoustic emissions	23
Operating environmental range	23
Printer hardware setup and software installation	24
Paper trays	25
Introduction	26
Load paper to the single-sheet slot (Tray 1)	26
Introduction	26
Tray 1 paper orientation	28
Load paper to Tray 2	29
Introduction	29
Tray 2 paper orientation	31
Load and print envelopes	33
Introduction	33
Print envelopes	33
Envelope orientation	34
Load and print labels	35
Introduction	35
Manually feed labels	35
Label orientation	36
Supplies, accessories, and parts	37
Order supplies, accessories, and parts	38
Ordering	38
Supplies and accessories	38
Customer self-repair parts	39
Replace the toner cartridges	40
Introduction	40
Remove and replace the toner cartridges	42
Print	45
Print tasks (Windows)	46
How to print (Windows)	46
Automatically print on both sides (Windows)	46
Manually print on both sides (Windows)	47
Print multiple pages per sheet (Windows)	47
Select the paper type (Windows)	48
Print tasks (OS X)	49
How to print (OS X)	49
Automatically print on both sides (OS X)	49
Manually print on both sides (OS X)	49
Print multiple pages per sheet (OS X)	50
Select the paper type (OS X)	50
Mobile printing	51
Introduction	51
Wi-Fi Direct (wireless models only)	51
Enable or disable Wi-Fi Direct	52
Change the printer Wi-Fi Direct name	52
HP ePrint via email	53
HP ePrint software	54
AirPrint	54
Android embedded printing	55
Use walk-up USB printing	56
Introduction	56
Step one: Access USB files on the printer	56
Step two: Print USB documents	56
Option one: Print documents	56
Option two: Print photos	57
Copy	59
Make a copy	60
Copy on both sides (duplex)	61
Copy on both sides automatically	61
Copy on both sides manually	61
Scan	63
Scan by using the HP Scan software (Windows)	64
Scan by using the HP Easy Scan Software (OS X)	65
Set up the Scan to E-mail feature	66
Introduction	66
Before you begin	66
Method one: Use the Scan to Email Wizard (Windows)	66
Method two: Set up the Scan to Email feature via the HP Embedded Web Server	68
Step one: Access the HP Embedded Web Server (EWS)	68
Step two: Configure the Scan to E-mail feature	68
Step three: Add contacts to the E-mail Address Book	70
Step four: Configure the default E-mail Options	70
Set up the Scan to Network Folder feature	71
Introduction	71
Before you begin	71
Method one: Use the Scan to Network Folder Wizard (Windows)	71
Method two: Set up the Scan to Network Folder feature via the HP Embedded Web Server	73
Step one: Access the HP Embedded Web Server (EWS)	73
Step two: Configure the Scan to Network Folder feature	73
Scan to a USB flash drive	75
Scan to email	76
Scan to a network folder	77
Additional scan tasks	78
Fax	79
Set up to send and receive faxes	80
Before starting	80
Step 1: Identify the phone connection type	80
Step 2: Set up the fax	81
Dedicated phone line	81
Shared voice/fax line	82
Shared voice/fax line with an answering machine	83
Step 3: Configure the fax time, date, and header	84
HP Fax Setup Wizard	84
Printer control panel	85
HP Embedded Web Server (EWS) and HP Device Toolbox (Windows)	85
Step 4: Run a fax test	86
Send a fax	87
Fax from the flatbed scanner	87
Fax from the document feeder	88
Use speed dials and group-dial entries	88
Send a fax from the software	89
Send a fax from a third-party software program, such as Microsoft Word	89
Manage the printer	91
Use HP Web Services applications (touchscreen models only)	92
Change the printer connection type (Windows)	93
Advanced configuration with HP Embedded Web Server (EWS) and HP Device Toolbox (Windows)	94
Configure IP network settings	97
Introduction	97
Printer sharing disclaimer	97
View or change network settings	97
Rename the printer on a network	97
Manually configure IPv4 TCP/IP parameters from the control panel	98
Printer security features	99
Introduction	99
Assign or change the system password using the Embedded Web Server	99
Energy-conservation settings	100
Introduction	100
Print with EconoMode	100
Set the Sleep/Auto Off After Inactivity setting	100
Set the Shut Down After Inactivity delay and configure the printer to use 1 watt or less of power	100
Set the Delay Shut Down setting	101
HP Web Jetadmin	102
Update the firmware	103
Method one: Update the firmware using the control panel	103
Method two: Update the firmware using the Firmware Update Utility	103
Solve problems	105
Customer support	106
Control panel help system	107
Restore the factory-set defaults	108
A “Cartridge is low” or “Cartridge is very low” message displays on the printer control panel	109
Change the “Very Low” settings	109
For printers with fax capability	110
Order supplies	110
Printer does not pick up paper or misfeeds	111
Introduction	111
The product does not pick up paper	111
The product picks up multiple sheets of paper	111
The document feeder jams, skews, or picks up multiple sheets of paper	111
Clear paper jams	113
Introduction	113
Paper jam locations	113
Experiencing frequent or recurring paper jams?	114
Clear paper jams in the document feeder	115
Clear paper jams in the single-sheet slot (Tray 1)	118
Clear paper jams in Tray 2	120
Clear paper jams in the rear door and the fuser area	122
Clear paper jams in the duplexer (duplex models only)	124
Clear paper jams in the output bin	126
Improve print quality	128
Introduction	128
Update the printer firmware	129
Print from a different software program	129
Check the paper-type setting for the print job	129
Check the paper type setting on the printer	129
Check the paper type setting (Windows)	129
Check the paper type setting (OS X)	129
Check toner-cartridge status	130
Print a cleaning page	130
Visually inspect the toner cartridge or cartridges	131
Check paper and the printing environment	131
Step one: Use paper that meets HP specifications	131
Step two: Check the environment	131
Step three: Set the individual tray alignment	132
Try a different print driver	132
Check the EconoMode settings	133
Adjust Print Density	133
Calibrate the printer to align the colors	134
Adjust color settings (Windows)	134
Print and interpret the print quality page	134
Resolving print quality problems	136
Introduction	136
Troubleshoot print quality problems	136
Improve copy and scan image quality	144
Introduction	144
Check the scanner glass for dirt and smudges	144
Eliminate lines or streaks when using the document feeder	145
Check the paper settings	145
Check the image adjustment settings	145
Optimize for text or pictures	146
Check the scanner resolution and color settings on the computer	146
Resolution and color guidelines	146
Color	147
Edge-to-edge copying	147
Clean the pickup rollers and separation pad in the document feeder	148
Improve fax image quality	149
Introduction	149
Check the scanner glass for dirt and smudges	149
Check the send-fax resolution settings	150
Check the error-correction settings	150
Check the fit-to-page setting	150
Clean the pickup rollers and separation pad in the document feeder	151
Send to a different fax machine	152
Check the sender's fax machine	152
Solve wired network problems	153
Introduction	153
Poor physical connection	153
The computer is unable to communicate with the printer	153
The printer is using incorrect link and duplex settings for the network	154
New software programs might be causing compatibility problems	154
The computer or workstation might be set up incorrectly	154
The printer is disabled, or other network settings are incorrect	154
Solve wireless network problems	155
Introduction	155
Wireless connectivity checklist	155
The printer does not print after the wireless configuration completes	156
The printer does not print, and the computer has a third-party firewall installed	156
The wireless connection does not work after moving the wireless router or printer	156
Cannot connect more computers to the wireless printer	156
The wireless printer loses communication when connected to a VPN	157
The network does not appear in the wireless networks list	157
The wireless network is not functioning	157
Perform a wireless network diagnostic test	157
Reduce interference on a wireless network	157
Solve fax problems	159
Introduction	159
Fax troubleshooting checklist	159
Solve general fax problems	160
Faxes are sending slowly	160
Fax quality is poor	161
Fax cuts off or prints on two pages	162