HP L7780 User Manual Page 167
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- Table of contents
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Check the type of media loaded in the device
• Make sure the tray supports the type of media you have loaded. For more
information, see
Understand specifications for supported media.
• Make sure you have selected the tray in the print driver that contains the media
that you want to use.
Check the device location and length of USB cable
High electromagnetic fields (such as those generated by USB cables) can sometimes
cause slight distortions to printouts. Move the device away from the source of the
electromagnetic fields. Also, it is recommended that you use a USB cable that is less
than 3 meters (9.8 feet) long to minimize the effects of these electromagnetic fields.
Meaningless characters print
If an interruption occurs to a job that is printing, the device might not recognize the rest
of the job.
Cancel the print job and wait for the device to return to the ready state. If the device
does not return to the ready state, cancel all jobs and wait again. When the device is
ready, resend the job. If prompted by the computer to retry the job, click Cancel.
Check the cable connections
If the device and computer are connected with a USB cable, the problem may be due
to a poor cable connection.
Make sure the cable connections at both ends are secure. If the problem persists, turn
off the device, disconnect the cable from the device, turn on the device without
connecting the cable, and delete any remaining jobs from the print spooler. When the
Power light is on and not flashing, reconnect the cable.
Check the document file
The document file may be damaged. If you can print other documents from the same
application, try printing a backup copy of your document, if available.
Ink is smearing
Check the print settings
• When you print documents that use much ink, allow more time to dry before
handling the printouts. This is especially true for transparencies. In the printer
driver, select the Best print quality, and also increase the ink drying time and
reduce the ink saturation using the ink volume under the advanced features
(Windows) or ink features (Mac OS). However, note that decreasing ink saturation
might give printouts a "washed-out" quality.
• Color documents that have rich, blended colors can wrinkle or smear when printed
using the Best print quality. Try using another print mode, such as Normal, to
reduce ink, or use HP Premium Paper designed for printing vivid color documents.
For more information, see
Change print settings.
Poor print quality and unexpected printouts
163
- HP Officejet Pro 1
- L7300/L7500/L7600/L7700 1
- HP Officejet Pro L7300/L7500/ 3
- L7600/L7700 All-in-One series 3
- Contents 5
- 1 Get started 14
- Accessibility 15
- Chapter 1 16
- 12 Get started 16
- Front view 17
- Printing supplies area 18
- Memory card slots 18
- Back view 19
- Connection information 23
- Install the accessories 25
- Chapter 2 26
- 22 Install the accessories 26
- 3 Use the all-in-one 28
- Control-panel message types 29
- Change device settings 29
- Chapter 3 30
- 26 Use the all-in-one 30
- Text and symbols 32
- Load the originals 34
- Select print media 36
- Load media 41
- 38 Use the all-in-one 42
- Configure trays 44
- Print borderless 46
- 44 Use the all-in-one 48
- 46 Use the all-in-one 50
- Change print settings 51
- Chapter 4 52
- 48 Print 52
- Cancel a print job 53
- Change the copy settings 54
- Cancel a copy job 55
- Scan an original 56
- Chapter 6 58
- Edit a scanned original 60
- Change scan settings 61
- Cancel a scan job 61
- 7 Work with memory devices 62
- (some models only) 62
- Connect a digital camera 63
- Chapter 7 64
- Connect a storage device 65
- View photos 66
- Print panoramic photos 69
- Print passport photos 70
- Print video action photos 71
- Save photos to your computer 72
- Fax (some models only) 74
- Send a fax 75
- Chapter 8 76
- 72 Fax (some models only) 76
- Receive a fax 77
- Set up backup fax reception 78
- 76 Fax (some models only) 80
- Block junk fax numbers 81
- 78 Fax (some models only) 82
- Change fax settings 83
- 80 Fax (some models only) 84
- Set the dial type 85
- Set the redial options 85
- Fax over the Internet 86
- Test fax setup 87
- Use reports 87
- Print fax error reports 88
- Cancel a fax 89
- 9 Configure and manage 90
- Monitor the device 91
- Administer the device 92
- Use device management tools 94
- Toolbox (Windows) 95
- HP Printer Utility (Mac OS) 97
- HP Web Jetadmin software 98
- HP Instant Support 98
- Chapter 9 100
- 96 Configure and manage 100
- 98 Configure and manage 102
- Configure network options 103
- 100 Configure and manage 104
- (continued) 111
- 108 Configure and manage 112
- 1 Telephone wall jack 112
- 110 Configure and manage 114
- 4 Computer 119
- 5 Telephone 119
- 118 Configure and manage 122
- 120 Configure and manage 124
- 122 Configure and manage 126
- Serial-type fax setup 128
- Direct connection 129
- 126 Configure and manage 130
- Network connection 131
- Configure the device (Mac OS) 132
- Control panel 133
- 132 Configure and manage 136
- 134 Configure and manage 138
- 136 Configure and manage 140
- 138 Configure and manage 142
- 140 Configure and manage 144
- 142 Configure and manage 146
- 10 Maintain and troubleshoot 147
- Replace the ink cartridges 148
- Maintain the printheads 149
- To align the printheads 150
- To calibrate the linefeed 151
- To clean the printheads 151
- Chapter 10 152
- 148 Maintain and troubleshoot 152
- To replace the printheads 154
- 3. Lift the printhead latch 155
- Store printing supplies 156
- Clean the device 156
- Clean the scanner glass 157
- To clean the ADF 158
- 1. Turn off the device 158
- 2. Lift the ADF 158
- 156 Maintain and troubleshoot 160
- Clean the exterior 161
- Solve printing problems 162
- Blank or partial page printed 164
- Poor quality printouts 166
- Meaningless characters print 167
- Ink is smearing 167
- Wrong colors are printing 168
- Solve paper-feed problems 169
- 166 Maintain and troubleshoot 170
- Solve copy problems 171
- Size is reduced 172
- Copy quality is poor 172
- Copy defects are apparent 172
- Solve scan problems 173
- Scanner did nothing 174
- Scan takes too long 174
- Text cannot be edited 175
- Error messages appear 175
- Scanned image quality is poor 175
- 172 Maintain and troubleshoot 176
- Scan defects are apparent 177
- Solve fax problems 178
- 176 Maintain and troubleshoot 180
- 178 Maintain and troubleshoot 182
- 180 Maintain and troubleshoot 184
- 184 Maintain and troubleshoot 188
- 186 Maintain and troubleshoot 190
- 188 Maintain and troubleshoot 192
- Solve alignment page problems 193
- Solve network problems 194
- Solve wireless problems 195
- Clear jams 196
- Clear a jam in the device 197
- 194 Maintain and troubleshoot 198
- Clear jams in the ADF 199
- 196 Maintain and troubleshoot 200
- Tips for avoiding jams 201
- HP supplies and accessories 202
- Printheads 203
- HP media 203
- Support and warranty 204
- Telephone support numbers 205
- Appendix B 206
- 202 Support and warranty 206
- Pack the device 210
- Device specifications 212
- System requirements 213
- Print specifications 214
- Copy specifications 215
- Fax specifications 215
- Supported devices 217
- Memory card specifications 217
- Regulatory information 218
- FCC statement 219
- Appendix D 220
- 216 Regulatory information 220
- Other regulatory information 222
- VCCI statement (Japan) 223
- Regulatory model number 223
- Power cord statement 223
- LED classification 223
- 220 Regulatory information 224
- Notice to users in France 226
- Notice to users in Germany 227
- Notice to users in Italy 228
- Notice to users in Spain 229
- Declaration of conformity 230
- HP Officejet Pro L7700 231
- Reduction and elimination 232
- Power consumption 232
- Battery information 232
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