HP L7780 User Manual Page 176
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- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
following suggestions do not solve the problem, you might need to use a better-quality
version of the original.
• To eliminate the patterns, try reducing the size of the image after scanning.
• Print the scanned image to see if the quality is better.
• Make sure that the resolution and color settings are correct for the type of scan job.
• For best results, use the flatbed scanner for scanning rather than the ADF.
• Text or images on the back of a two-sided original appear in the scan
Two-sided originals can "bleed" text or images from the back side to the scan if the
originals are printed on media that is too thin or too transparent.
• The image quality is better when printed
The image that appears on the screen is not always an accurate representation of
the quality of the scan.
• Try adjusting your computer monitor settings to use more colors (or levels of
gray). On Windows computers, you typically make this adjustment by opening
Display on the Windows control panel.
• Try adjusting the resolution and color settings.
•
The scanned image is skewed (crooked)
The original might have been loaded incorrectly. Be sure to use the media guides
when you load the originals into the ADF. For more information, see
Load the
originals.
•
The scanned image shows blots, lines, vertical white stripes, or other defects
• If the scanner glass is dirty, the image produced does not have optimum
clarity. See
Clean the device for cleaning instructions.
• The defects might be on the original and not a result of the scanning process.
•
Graphics look different from the original
The graphics settings might not be suitable for the type of scan job that you are
performing. Try changing the graphics settings.
• Take steps to improve the scan quality
• Use the flatbed scanner to scan rather than the ADF.
• Use high-quality originals.
• Load the media correctly. If the media is loaded incorrectly, it might skew,
which causes unclear images. For more information, see
Load the originals.
• Adjust the software settings according to how you plan to use the scanned
page.
• Use or make a carrier sheet to protect your originals.
• Clean the scanner glass. See
Clean the scanner glass for more information.
Chapter 10
172 Maintain and troubleshoot
- 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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