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Troubleshooting print-quality issues

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15 Troubleshooting print-quality issues ● General printing advice ● Horizontal lines across the image (banding) ● Lines are too thick, too thin, or missing ● Lines appear stepped or jagged ● Lines print double or in the wrong colors ● Lines are discontinuous ● Lines are blurred ● Line lengths are inaccurate ● The whole image is blurry or grainy ● The paper is not flat ● The print is scuffed or scratched ● Ink marks on the paper ● Black ink comes off when you touch the print ● Edges of objects are stepped or not sharp ● Edges of objects are darker than expected ● Vertical lines of different colors ● White spots on the print ● Colors are inaccurate ● Colors are fading ● The image is incomplete (clipped at the bottom) ● The image is clipped ● Some objects are missing from the printed image 136 Chapter 15 Troubleshooting print-quality issues ENWW

Section	Page
Introduction	5
Safety precautions	5
General safety guidelines	5
Electrical shock hazard	6
Fire hazard	6
Mechanical hazard	7
Heavy paper hazard	7
Ink handling	7
Warnings and cautions	7
Using this guide	7
Introduction	7
Use and maintenance	8
Troubleshooting	8
Accessories, support and specifications	8
Glossary	8
Index	8
Warnings and Cautions	8
Printer models	9
The printer’s main features	9
The printer’s main components	10
HP DesignJet T830 Multifunction Printer front view	10
HP DesignJet T730 Printer front view	11
HP DesignJet T830 Multifunction Printer rear view	12
HP DesignJet T730 Printer rear view	13
Communication	13
The front panel	13
Printer software	15
Mobile printing and Web Services	16
Mobile printing	16
Enable email printing	16
Turn the printer on and off	16
Reports	17
Connecting the printer	19
Choose which connection method to use	20
Connect the printer to your network	20
Connect a computer to the printer by network (Windows)	21
Uninstall the printer software (Windows)	21
Connect a computer to the printer by network (Mac OS X)	21
Bonjour connection	22
TCP/IP connection	22
Sharing the printer	23
Uninstall the printer software (Mac OS X)	23
Setting up the printer	24
Introduction	25
Automatic firmware update	25
Turn email notifications on and off	25
Turn alerts on and off	25
Control access to the Embedded Web Server	27
Set Windows driver preferences	27
Set up Web Services	27
Personalizing the printer	29
Change the language of the front-panel display	30
Access the Embedded Web Server	30
Change the language of the Embedded Web Server	30
Access the HP Utility	30
Change the language of the HP Utility	31
Change the unit of measurement	31
Change the sleep mode setting	31
Change the auto-off setting	31
Change the front-panel display brightness	31
Configure network settings	32
Configure firewall settings	32
Creating and using firewall rules	33
Create a firewall rule	33
Change the priority of firewall rules	33
Change firewall options	33
Reset firewall settings	33
Limitations to rules, templates, and services	33
Reset network settings	34
Manage printer security	34
Change your printer’s email address	34
Paper handling	35
General paper-loading advice	36
Load a roll onto the spindle	36
Load a roll into the printer	38
Unload a roll	40
Load a single sheet	40
Unload a single sheet	42
Use the multi-sheet tray	42
View information about the paper	43
Maintain paper	43
Change the drying time	43
Turn the automatic cutter on and off	44
Form feed with or without cutting	44
Printing	45
Print from USB flash drive	46
Print settings	47
Mobile printing	47
Print with HP Click	47
Print from a computer using a printer driver	48
Advanced print settings	48
Select print quality	48
Select paper size	49
Custom paper sizes	49
Select margins options	50
Print on loaded paper	51
Rescale a print	51
Print a draft	52
High-quality printing	52
If you have a high-resolution image	52
Use paper economically	52
Use ink economically	52
Color management	53
Color management options	53
Printing in grayscale or black-and-white	53
Scanning	55
Paper types suitable for scanning	56
Scan to file	57
Scan settings	62
Scan options setup process	63
Scan to email setup process	63
Scan to network setup process	64
Scan to computer	68
Webscan	68
From server/from printer	68
Example: Create a scan-to-network folder under Windows	69
Example: Create a scan-to-network folder under Mac OS X	70
Scan from the HP Smart App	72
Copying	73
Copy	73
Copy settings	74
Mobile printing	76
Mobile specifications	77
Mobile printing	77
Print from in-OS	77
Print, scan, and share from the HP Smart App	78
Print by email (HP ePrint)	78
Practical printing examples	80
Print from Adobe Acrobat	81
Print from Autodesk AutoCAD	83
Using printer emulation	88
Using clip contents by margins	89
Print from Adobe Photoshop	89
Print and scale from Microsoft Office	92
Using PowerPoint	92
Using Project	93
Using Excel	95
Handling ink cartridges and printhead	98
About the ink cartridges	99
Storage of anonymous usage information	99
Check ink cartridge status	99
Replace an ink cartridge	100
About the printhead	101
Maintaining the printer	102
Check printer status	103
Take care of the printer	103
Clean the exterior of the printer	103
The Print Quality Diagnostic Report	103
Corrective actions	104
Clean the printhead	104
Align the printhead	105
Replace the printhead	105
Recalibrate the paper advance	110
Recalibrating the paper advance procedure	110
Return to default calibration	111
Move or store the printer	111
Firmware update	111
Software update	112
Printer maintenance kits	112
Clean the scanner scanbars	113
Calibrate the scanner	115
Accessories	117
How to order supplies and accessories	118
Order ink supplies	118
Order paper	118
Order accessories	118
Introduction to the accessories	119
HP DesignJet 36-in Spindle (for 36-in printers)	119
HP DesignJet 24-in Spindle (for 24-in printers)	119
HP USB 3.0 to Gigabit Adapter	119
HP DesignJet rugged case	119
Troubleshooting paper issues	120
The paper cannot be loaded successfully	121
Unsuccessful roll load	121
Unsuccessful sheet load	121
Unsuccessful load from the multi-sheet tray	122
Paper loading error messages	122
The paper type is not in the driver	123
Transparent or translucent film	123
Photo paper	123
Bond and coated or technical paper	123
Black ink is easily removed when touched	123
After printing, the paper has wrinkles or there is too much ink	124
The printer printed on the wrong paper type	124
Paper mismatch	124
The roll has jammed	124
A single sheet has jammed	132
The multi-sheet tray has jammed	134
A strip stays on the output tray and generates jams	136
The printer displays out of paper when paper is available	136
Prints do not fall neatly into the bin	136
The sheet stays in the printer when the print has been completed	136
The paper is cut when the print has been completed	137
The cutter does not cut well	137
The roll is loose on the spindle	137
Scanner does not load original	137
Scanner paper jam removal	137
Troubleshooting print-quality issues	140
General printing advice	141
Horizontal lines across the image (banding)	141
Lines are too thick, too thin, or missing	142
Lines appear stepped or jagged	142
Lines print double or in the wrong colors	143
Lines are discontinuous	143
Lines are blurred	144
Line lengths are inaccurate	144
The whole image is blurry or grainy	145
The paper is not flat	145
The print is scuffed or scratched	146
Ink marks on the paper	146
Horizontal smears on the front of coated paper	146
Ink marks on the back of the paper	147
Black ink comes off when you touch the print	147
Edges of objects are stepped or not sharp	147
Edges of objects are darker than expected	147
Vertical lines of different colors	148
White spots on the print	148
Colors are inaccurate	148
Colors are fading	148
The image is incomplete (clipped at the bottom)	149
The image is clipped	149
Some objects are missing from the printed image	149
Troubleshooting scanner issues	151
Cannot access the network folder	151
Scanning to file is slow	151
Original document is reloaded while scanning	152
Troubleshooting copy and scan quality issues	153
Random vertical lines	154
Wrinkles or folds	154
Line discontinuities	155
Light-colored area fills are missing in the scan or copy	156
Grain in area fills when scanning plain paper	156
Small color differences between adjacent scanbars	158
Vertical light lines at the intersection between scanner scanbars	158
Variable line thickness or missing lines	159
Inaccurately reproduced colors	159
Color fringing	160
Clipping in dark or light areas	161
Flare in the image when scanning glossy originals	162
Vertical red and green bands over white or black background	162
Vibration	162
Defocus, blurring and fading colors	163
Incorrect paper advance, skew during scanning, or horizontal wrinkles	164
Vertical black band 30 cm wide	165
The scanner damages some originals	165
Completely wrong colors	166
Vertical distortion	166
Object replication (ghosting)	167
Clipping or incorrect scale factor when down-scaling in copies and prints	168
Incorrect edge detection, mostly when scanning tracing paper	168
A copied or scanned image is very skewed	168
The scanner diagnostic plot	169
Prepare the printer and the paper to print the diagnostic sheet	170
Visual check for errors while printing the diagnostic sheet	170
Resolution	170
Alignment	171
Loss of shadow or highlight details	172
Printer banding	172
Streaks	173
Grain	173
Scan or copy the diagnostic plot	173
Monitor calibration	174
Save the diagnostic plot for future use	174
Troubleshooting ink cartridge and printhead issues	175
Cannot insert an ink cartridge	176
Ink cartridge status messages	176
Cannot insert the printhead	176
Cannot connect the tubes to the printhead	177
Troubleshooting data communication issues	178
Communication failures between computer and printer	179
Wired network issues	179
Network port created does not match printer IP address (Windows)	180
Wireless network issues	180
Advanced wireless network troubleshooting	181
Add hardware addresses to a wireless access point (WAP)	183
Mobile printing and web services issues	183
The network configuration page	183
Troubleshooting general printer issues	185
The printer does not start	186
The printer does not print	186
The printer seems slow	186
The front panel is frozen	186
Cannot access the Embedded Web Server	187
Alerts	187
Front-panel error messages	188
HP Customer Care	190
Introduction	191
HP Professional Services	191
HP Support Center	191
HP Care Packs and Warranty Extensions	191
Installation Service with Network Setup	191
Customer Self Repair	192
Contact HP Support	192
Telephone number	192
Printer specifications	193
Functional specifications	194
Mobile printing specifications	195
Physical specifications	196
Memory specifications	196
Power specifications	196
Ecological specifications	196
Environmental specifications	196
Acoustic specifications	197
Wireless frequency bands	197
Glossary	198