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HP LaserJet Pro MFP M28-M31 User Guide - Page 81

Improve print quality, Introduction, Update the printer firmware - user guide

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Improve print quality ● Introduction ● Update the printer firmware ● Print from a different software program ● Check the paper-type setting for the print job ● Check toner-cartridge status ● Cartridge cleaning ● Print a cleaning page ● Visually inspect the toner cartridge ● Check paper and the printing environment ● Adjust Print Density Introduction The following information provides troubleshooting steps to resolve print-quality problems, including the following problems: ● Smears ● Fuzzy print ● Dark print ● Light print ● Streaks ● Missing toner ● Scattered dots of toner ● Loose toner ● Skewed images To resolve these or other print-quality problems, try the following solutions in the order presented. For information about resolving specific image defects, see the Resolving print quality problems section of this User Guide. Update the printer firmware Try upgrading the printer firmware. For more information, see the Update the firmware section of this User Guide. Print from a different software program Try printing from a different software program. If the page prints correctly, the problem is with the software program from which you were printing. ENWW Improve print quality 73

Section	Page
Printer overview	9
Warning icons	10
Printer views	11
Printer front view	11
Printer back view	11
Control panel view	12
Wireless models	12
Base models	13
Printer specifications	14
Technical specifications	14
Supported operating systems	14
Mobile printing solutions	15
Printer dimensions	16
Power consumption, electrical specifications, and acoustic emissions	16
Operating-environment range	16
Printer hardware setup and software installation	17
Paper trays	19
Introduction	20
Load paper trays	20
Input tray	20
Load and print envelopes	21
Introduction	21
Print envelopes	21
Envelope orientation	21
Load and print labels	22
Introduction	22
Manually feed labels	22
Label orientation	22
Supplies, accessories, and parts	23
Order supplies, accessories, and parts	24
Ordering	24
Supplies and accessories	24
Replace the toner cartridge	25
Cartridge information	25
Remove and replace the toner cartridge	25
Print	29
Print tasks (Windows)	30
How to print (Windows)	30
Manually print on both sides (Windows)	31
Print multiple pages per sheet (Windows)	31
Select the paper type (Windows)	32
Print tasks (OS X)	33
How to print (OS X)	33
Manually print on both sides (OS X)	33
Print multiple pages per sheet (OS X)	33
Select the paper type (OS X)	34
Mobile printing	35
Introduction	35
Wi-Fi Direct (wireless models only)	35
Enable or disable Wi-Fi Direct	36
Change the printer Wi-Fi Direct name	37
AirPrint	37
Android embedded printing (wireless models only)	38
Copy	39
Make a copy	40
Copy identification card	41
Scan	43
Scan by using the HP Scan software (Windows)	44
Scan by using the HP Easy Scan Software (OS X)	45
Additional scan tasks	46
Manage the printer	47
Change the printer connection type (Windows)	48
Advanced configuration with HP Embedded Web Server (EWS) and HP Device Toolbox (Windows)	49
Advanced configuration with HP Utility for OS X	51
Open HP Utility	51
HP Utility features	51
Configure IP network settings	53
Introduction	53
Printer sharing disclaimer	53
View or change network settings	53
Manually configure IPv4 TCP/IP parameters	53
Printer security features	55
Introduction	55
Assign or change the system password using the HP Embedded Web Server	55
Energy-conservation settings	57
Introduction	57
Set the Sleep/Auto Off After Inactivity setting	57
Set the Shut Down After Inactivity delay and configure the printer to use 1 watt or less of power	58
Set the Delay Shut Down setting	59
Update the firmware	60
Update the firmware using the Firmware Update Utility	60
Solve problems	61
Customer support	62
Laser Warning	63
Interpret control-panel light patterns	64
Restore the factory-set defaults	68
A “Cartridge is low” or “Cartridge is very low” message displays	69
Change the “Very Low” settings	69
Order supplies	70
Printer does not pick up paper or misfeeds	71
Introduction	71
The product does not pick up paper	71
The product picks up multiple sheets of paper	71
Clear paper jams	72
Introduction	72
Jam locations	72
Experiencing frequent or recurring paper jams?	73
Clear jams from the input tray	75
Clear jams from inside the product	77
Clear jams from the output areas	79
Improve print quality	81
Introduction	81
Update the printer firmware	81
Print from a different software program	81
Check the paper-type setting for the print job	82
Check the paper type setting on the printer	82
Check the paper type setting (Windows)	82
Check the paper type setting (OS X)	82
Check toner-cartridge status	82
Cartridge cleaning	83
Print a cleaning page	84
Visually inspect the toner cartridge	84
Check paper and the printing environment	84
Step one: Use paper that meets HP specifications	84
Step two: Check the environment	85
Adjust Print Density	85
Resolving print quality problems	87
Introduction	87
Troubleshoot print quality problems	87
Improve copy and scan image quality	95
Introduction	95
Check the scanner glass for dirt and smudges	95
Check the paper settings	95
Optimize for text or pictures	97
Edge-to-edge copying	97
Solve wireless network problems	98
Introduction	98
Wireless connectivity checklist	98
The printer does not print after the wireless configuration completes	99
The printer does not print, and the computer has a third-party firewall installed	99
The wireless connection does not work after moving the wireless router or printer	99
Cannot connect more computers to the wireless printer	99
The wireless printer loses communication when connected to a VPN	100
The network does not appear in the wireless networks list	100
The wireless network is not functioning	100
Perform a wireless network diagnostic test	100
Reduce interference on a wireless network	101