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Lexmark MX431 Users Guide PDF - Page 160

Print quality problems, Print quality is poor

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Troubleshoot a problem 160 Action Yes Step 8 a Make sure that the printer is not overheating. Contact customer support. Notes: • Allow the printer to cool down after a long print job. • Observe the recommended ambient temperature for the printer. For more information, see "Selecting a location for the printer" on page 19. b Print the document. No The problem is solved. Is the printer printing slow? Print quality problems Print quality is poor Find the image that resembles the print quality problem you are having, and then click the link below it to read problem-solving steps. "Blank or white pages" on "Dark print" on page 163 "Fine lines are not printed "Folded or wrinkled paper" page 161 correctly" on page 164 on page 165 "Gray background" on page 166 "Horizontal light bands" "Incorrect margins" on on page 176 page 168 "Light print" on page 168

Section	Page
Contents	2
Safety information	6
Conventions	6
Product statements	6
Learn about the printer	9
Finding information about the printer	9
Printer configuration	11
Using the control panel	11
Customizing the home screen	12
Changing the language of the keyboard on the display	12
Understanding the status of the indicator light	12
Selecting paper	13
Paper guidelines	13
Paper characteristics	13
Unacceptable paper	14
Selecting preprinted forms and letterhead	14
Storing paper	14
Supported paper sizes	15
Supported paper types	17
Supported paper weights	18
Set up, install, and configure	19
Selecting a location for the printer	19
Attaching cables	20
Installing optional trays	21
Setting up the printer to fax	21
Setting up the fax function	21
Setting up fax using a standard telephone line	22
Setting up fax in countries or regions with different telephone wall jacks and plugs	24
Connecting to a distinctive ring service	27
Setting the fax date and time	28
Configuring daylight saving time	28
Configuring the fax speaker settings	28
Loading paper and specialty media	28
Setting the paper size and type	28
Configuring Universal paper settings	28
Loading trays	28
Loading the multipurpose feeder	30
Linking trays	31
Installing and updating software, drivers, and firmware	31
Installing the printer software	31
Updating firmware	32
Exporting or importing a configuration file	32
Adding available options in the print driver	33
Networking	33
Connecting the printer to a Wi-Fi network	33
Connecting the printer to a wireless network using Wi-Fi Protected Setup (WPS)	34
Connecting a mobile device to the printer	34
Deactivating the Wi-Fi network	35
Checking the printer connectivity	35
Creating a Cloud Connector profile	35
Printing the Menu Settings Page	36
Secure the printer	37
Locating the security slot	37
Erasing printer memory	37
Restoring factory default settings	37
Statement of Volatility	38
Print	39
Printing from a computer	39
Printing from a mobile device	39
Printing from a mobile device using Lexmark Mobile Print	39
Printing from a mobile device using Google Cloud Print	39
Printing from a mobile device using Mopria Print Service	39
Printing from a mobile device using AirPrint	40
Printing from a mobile device using Wi-Fi Direct®	40
Printing from a flash drive	41
Supported flash drives and file types	42
Configuring confidential jobs	42
Printing confidential and other held jobs	43
Printing from a Cloud Connector profile	43
Printing a font sample list	44
Placing separator sheets between copies	44
Canceling a print job	44
Adjusting toner darkness	44
Copy	45
Using the automatic document feeder and scanner glass	45
Making copies	45
Copying photos	45
Copying on letterhead	46
Copying on both sides of the paper	46
Reducing or enlarging copies	46
Collating copies	46
Copying multiple pages onto a single sheet	46
Copying cards	47
Creating a copy shortcut	47
E-mail	48
Using the automatic document feeder and scanner glass	48
Configuring the SMTP server for e-mail	48
Sending an e-mail	49
Creating an e-mail shortcut	49
Fax	50
Using the automatic document feeder and scanner glass	50
Sending a fax	50
Scheduling a fax	51
Creating a fax destination shortcut	51
Changing the fax resolution	51
Adjusting the fax darkness	51
Printing a fax log	52
Blocking junk faxes	52
Forwarding a fax	52
Scan	53
Using the automatic document feeder and scanner glass	53
Creating an FTP shortcut	53
Scanning to an FTP server using a shortcut	53
Creating a network folder shortcut	54
Scanning to a network folder using a shortcut	54
Scanning to a flash drive	54
Scanning to a Cloud Connector profile	55
Use printer menus	56
Menu map	56
Device	57
Preferences	57
Eco-Mode	58
Remote Operator Panel	59
Notifications	59
Power Management	61
Information Sent to Lexmark	62
Restore Factory Defaults	62
Maintenance	63
Config Menu	63
Out of Service Erase	66
Visible Home Screen Icons	67
About this Printer	67
Print	68
Layout	68
Setup	69
Quality	70
PDF	70
PostScript	70
PCL	71
Image	72
Paper	73
Tray Configuration	73
Media Configuration	74
Universal Setup	74
Custom Scan Sizes	75
Media Types	75
Copy	76
Copy Defaults	76
Fax	77
Fax Defaults	77
Fax Mode	77
Fax Setup	78
E-mail	84
E-mail Setup	84
E-mail Defaults	86
FTP	88
FTP Defaults	88
USB Drive	90
Flash Drive Scan	90
Flash Drive Print	92
Network/Ports	94
Network Overview	94
Wireless	95
Ethernet	97
TCP/IP	99
SNMP	100
IPSec	101
802.1x	102
LPD Configuration	103
HTTP/FTP Settings	103
USB	104
Restrict external network access	105
Google Cloud Print	105
Wi-Fi Direct	105
Security	107
Login Methods	107
Public	107
Local Accounts	108
Certificate Management	108
Schedule USB Devices	108
Login Restrictions	109
Confidential Print Setup	109
Erase Temporary Data Files	110
Miscellaneous	110
Cloud Connector	111
Reports	111
Menu Settings Page	111
Device	111
Print	111
Shortcuts	111
Fax	112
Network	112
Troubleshooting	112
Maintain the printer	113
Checking the status of parts and supplies	113
Configuring supply notifications	113
Setting up e-mail alerts	113
Viewing reports	113
Ordering parts and supplies	114
Using genuine Lexmark parts and supplies	114
Ordering a toner cartridge	114
Ordering an imaging unit	116
Replacing parts and supplies	116
Replacing the toner cartridge	116
Replacing the imaging unit	119
Replacing the tray	122
Replacing the pick roller assembly	122
Replacing the tray separator roller	126
Replacing the ADF separator pad	127
Resetting the supply usage counters	129
Cleaning printer parts	129
Cleaning the printer	129
Cleaning the scanner	130
Saving energy and paper	131
Configuring the power save mode settings	131
Adjusting the brightness of the printer display	132
Conserving supplies	132
Moving the printer to another location	132
Shipping the printer	133
Troubleshoot a problem	134
The printer is not responding	134
Unable to read flash drive	135
Enabling the USB port	135
Network connection problems	136
Cannot open Embedded Web Server	136
Issues with supplies	137
Replace cartridge, printer region mismatch	137
Non-Lexmark supply	137
Clearing jams	138
Avoiding jams	138
Identifying jam locations	140
Paper jam in the automatic document feeder	141
Paper jam in the standard bin	141
Paper jam in the multipurpose feeder	142
Paper jam in trays	145
Paper jam in the duplex unit	148
Paper jam in the rear door	150
Paper feed problems	153
Envelope seals when printing	153
Collated printing does not work	153
Tray linking does not work	154
Paper frequently jams	154
Jammed pages are not reprinted	155
Printing problems	155
Print jobs do not print	155
Confidential and other held documents do not print	156
Job prints from the wrong tray or on the wrong paper	157
Slow printing	158
Print quality problems	160
Print quality is poor	160
Blank or white pages	161
Dark print	163
Fine lines are not printed correctly	164
Folded or wrinkled paper	165
Gray background	166
Incorrect margins	168
Light print	168
Mottled print and dots	170
Paper curl	171
Print crooked or skewed	173
Solid black pages	174
Text or images cut off	175
Toner easily rubs off	176
Horizontal light bands	176
Vertical light bands	177
Vertical white lines	178
Vertical dark bands	179
Vertical dark lines or streaks	180
Vertical dark streaks with print missing	181
Repeating defects	182
Faxing problems	183
Caller ID is not shown	183
Cannot send or receive faxes	183
Can receive but not send faxes	185
Can send but not receive faxes	185
Poor fax print quality	186
Scanning problems	186
Cannot scan from a computer	186
Partial copies of document or photo	187
Scan job was not successful	187
Poor copy quality	188
Vertical dark streaks on output when scanning from the ADF	188
Scanner does not close	188
Scanning takes too long or freezes the computer	189
Scanner does not respond	189
Adjusting scanner registration	189
Adjusting ADF registration	190
Contacting customer support	190
Recycle and dispose	191
Recycling Lexmark products	191
Recycling Lexmark packaging	191
Notices	192
Product information	192
Edition notice	192
GOVERNMENT END USERS	192
Trademarks	193
Licensing notices	193
Noise emission levels	193
Waste from Electrical and Electronic Equipment (WEEE) directive	194
India E-Waste notice	194
Product disposal	194
Returning Lexmark cartridges for reuse or recycling	194
Static sensitivity notice	195
ENERGY STAR	195
Temperature information	195
Laser notice	195
Power consumption	196
Product power consumption	196
Sleep Mode	196
Hibernate Mode	197
Off mode	197
Total energy usage	197
Regulatory notices for telecommunication terminal equipment	197
Notice to users of the US telephone network: FCC requirements	197
Notice to users of the Canadian telephone network	198
Notice to users of the New Zealand telephone network	199
Japanese telecom notice	199
Regulatory notices for wireless products	200
Modular component notice	200
Exposure to radio frequency radiation	201
Industry Canada (Canada)	201
Federal Communications Commission (FCC) compliance information statement	201
日本の VCCI 規定	202
European Community (EC) directives conformity	202
European Community (EC) directives conformity	203
STATEMENT OF LIMITED WARRANTY FOR LEXMARK LASER PRINTERS, LEXMARK LED PRINTERS, AND LEXMARK MULTIFUN ...	203