Hp Deskjet 6840 Color Inkjet Printer User Manual Page 144
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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A personal software firewall is blocking communication between the printer
and the computer
The personal software firewall is a security program that protects a computer from
intrusion. However, the personal firewall might block communication between the
computer and the printer.
If you cannot communicate with the printer, try disabling the personal firewall. If you
are still unable to communicate with the printer, then re-enable the firewall.
If disabling the firewall allows you to communicate with the printer, you might want
to assign the printer a static IP address and then re-enable the firewall. To assign
the printer a static IP address, see the network guide that came with the printer.
The Wireless Access Point filters MAC addresses
MAC filtering is a security feature in which a Wireless Access Point (WAP) is
configured with a list of MAC addresses (also called hardware addresses) of devices
that are allowed to gain access to the network through the WAP.
If the WAP does not have the hardware address of a device attempting to access
the network, the WAP denies the device access to the network.
If the WAP filters MAC addresses, then the printer's MAC address must be added
to the WAP's list of accepted MAC addresses.
1. Print an HP Report page.
2. Find the printer's hardware address on the HP Report page.
3. Open the WAP's configuration utility, then add the printer's hardware address
to the list of accepted MAC addresses.
Printer has the wrong network settings
If one of these network settings in the printer is incorrect, you will not be able to
communicate with the printer:
• Communication Mode
• Network Name (SSID)
• Channel (Ad hoc networks only)
• Authentication Type
• Encryption
• WPA
Follow these steps to correct the printer's network settings:
1. Connect the printer to your network or computer with an Ethernet cable.
2. Open the printer's embedded Web server (EWS).
HP Deskjet 6800 series printer
144
- 2 Special features 2
- 3 Getting started 3
- 3.2 Buttons and lights 5
- Power button and light 6
- Print Cancel button 6
- Resume button and light 6
- 3.4 Paper trays 7
- Out tray 8
- 3.5 Photo/envelope feeder 9
- Envelopes 10
- Postcards 11
- 3.6 Print cartridges 12
- 3.7 Ink-backup mode 13
- Exiting ink-backup mode 14
- 4 Connecting to the printer 15
- Adapters and access points 16
- Wireless network examples 18
- Communication modes 18
- Wireless network settings 19
- Wireless profiles 20
- Ad hoc networks 20
- Infrastructure networks 21
- 4.2.3 Wireless profiles 22
- 4.2.4 Network name (SSID) 23
- 4.2.5 Wireless security 25
- Wireless security basics 26
- Authentication 26
- Encryption 27
- WPA is a network feature 29
- WEP is a network feature 30
- WEP keys 30
- 4.2.9 Open system 31
- 4.2.11 Wireless Status light 31
- Signal Strength indicator 32
- 4.2.12 Report Page button 33
- 4.2.13 Network icon 33
- 4.2.14 Wireless radio 34
- How the wireless radio works 34
- Wireless Status light 34
- 4.2.15 HP Report page 35
- Printing an HP Report page 35
- Selecting the language 35
- 4.2.18 Networking glossary 41
- 4.3.1 Ethernet basics 46
- Hardware 46
- Network communication 47
- Internet connections 47
- Ethernet network examples 47
- Previous installations 51
- Software installation 51
- 4.3.6 Ethernet lights 51
- Link light 51
- 5.1 PictBridge 53
- 5.2 PictBridge printing 54
- 5.3 PictBridge problems 55
- 6 Printing photos from a 58
- 6.2 PhotoREt 59
- 6.4 Maximum dpi 60
- 6.5 Exif Print 61
- 6.7 Photo print cartridge 64
- 6.9 Color management 66
- 6.14 Small borderless photos 69
- 6.15 Large borderless photos 71
- 7 Printing other documents 79
- 7.1 Email 80
- 7.2 Letters 81
- 7.3 Documents 82
- 7.4 Envelopes 83
- 7.5 Postcards 84
- 7.6 Brochures 85
- 7.7 Greeting cards 86
- 7.8 Transparencies 88
- 7.9 Labels 89
- 7.11 Booklets 91
- 7.12 Posters 93
- 7.13 Banners 94
- 7.14 Iron-on transfers 95
- 8 Printing tips 97
- 8.1.5 Presentation printing 99
- 8.1.7 Postcard printing 99
- 8.2 Print task quick sets 100
- 8.4 Printing in grayscale 102
- 8.6 Setting the page order 103
- 8.7 Printing collated copies 104
- Binding type 106
- Book binding 106
- Tablet binding 107
- 8.11 Print preview 112
- 8.12 Selecting a paper type 113
- 8.14 Resizing a document 115
- 8.15 Watermarks 117
- Guidelines 119
- Printing 119
- Load paper 120
- Defining a custom paper size 122
- 9 Printer software 125
- 9.3 Device Status window 126
- 10 Maintenance 128
- Installation instructions 129
- 10.3 Calibrating color 132
- Gathering cleaning supplies 133
- Preparing to clean 133
- 10.6 Printing a test page 134
- Storing print cartridges 135
- 10.11 Printer toolbox 137
- 11 Troubleshooting 138
- Activity light 139
- The radio signal is weak 143
- 11.3 Printer is not printing 145
- 11.4 Paper jam 146
- 11.5 Paper problems 147
- 11.6 Print quality is poor 148
- Blank pages print 149
- 11.7 Document is misprinted 150
- Check the printer properties 151
- Part of the photo is faded 152
- Check the paper tray 153
- Check the software 153
- Image is printed at an angle 155
- Ink smears 157
- 11.11 Error messages 158
- What the lights indicate 159
- Power light is flashing 159
- Resume light is flashing 159
- 11.13 Document prints slowly 160
- Printer driver is outdated 161
- Printer is in ink-backup mode 161
- 12 Optional accessories 162
- 12.1.2 Enabling the duplexer 164
- Paper jam 166
- Two parts 170
- Setting the paper size 171
- Loading paper 173
- Accessory 174
- Dimensions 175
- Paper Tray 176
- 12.3.2 Printing postcards 178
- Preparing to print 178
- 12.3.3 Small photos 179
- 12.3.4 Envelopes 181
- 13 Supplies 188
- 14 Specifications 189
- Energy consumption 190
- 15 Notices 192
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