HP DesignJet T770 User Manual

							●Paper handling on page 31
●
Working with two rolls (T1200 series only) on page 46
●
Printing on page 49
●
Color management on page 65
●
Practical printing examples on page 77
●
Job queue management on page 103
●
Retrieving printer usage information on page 109
●
Handling ink cartridges and printheads on page 112
●
Maintaining the printer on page 123
Troubleshooting
These chapters help you solve problems that may occur while printing and include the following
topics.
●
Troubleshooting paper issues on page 135
●
Troubleshooting print-quality issues on page 147
●
Troubleshooting ink cartridge and printhead issues on page 163
●
Troubleshooting general printer issues on page 171
●
Front-panel error messages on page 177
Accessories, support and specifications
These chapters, Accessories on page 128, HP Customer Care on page 179 and Printer
specifications on page 183, contain reference information, including customer care, the printer
specifications and part numbers for paper types, ink supplies and accessories.
Glossary
The Glossary on page 187 contains definitions of printing and HP terms used in this documentation.
Index
In addition to the table of contents, there is an alphabetical index to help you to find topics quickly.
Warnings and Cautions
The following symbols are used in this manual to ensure the proper use of the printer and to prevent
the printer from being damaged. Follow the instructions marked with these symbols.
WARNING!Failure to follow the guidelines marked with this symbol could result in serious personal
injury or death.
CAUTION:Failure to follow the guidelines marked with this symbol could result in minor personal
injury or damage to the product.
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							Printer models
This guide covers the following printer models, normally referring to them by their short names for
brevity.
Full nameShort name
HP Designjet T770T770
HP Designjet T770 with PS Upgrade T770 PS
HP Designjet T770 with Hard Disk T770 HD
HP Designjet T770 with Hard Disk and PS Upgrade T770 HD PS
HP Designjet T1200T1200
HP Designjet T1200 PostScript® T1200 PS
The printers main features
Your printer is a color inkjet printer designed for printing high-quality images on paper up to 610 mm
(24 in) or 1118 mm (44 in) wide. Some major features of the printer are shown below:
●Print resolution of up to 2400 × 1200 optimized dpi, from a 1200 × 1200 dpi input, using the Best
print-quality option, the Maximum Detail option and photo paper
●The HP Utility, see 
Access the HP Utility on page 27, provides an easy-to-use interface
including:
◦Job management, see 
Job queue management on page 103
◦Printer calibration
◦Access to the online HP Knowledge Center (see 
Knowledge Center on page 180)
●Paper flexibility and automatic easy load, see 
Paper handling on page 31, with information and
presets accessible from the front panel and the HP Utility
●Handles cut-sheet and roll paper
●Six-ink system
●Accurate and consistent color reproduction with automatic color calibration
●Color emulations, see 
Printer emulation on page 68
●Economode for printing economically
●Two rolls loaded at once provide fast and easy switching between different rolls, or long runs of
unattended printing (T1200 series only)
●High productivity features such as job previewing and nesting using the HP Utility or the printers
Embedded Web Server (T1200 series only)
●Ink and paper usage information available from the Embedded Web Server, see 
Access the
Embedded Web Server on page 27
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							The printers main components
The following front and rear views of the 1118mm (44 in) printer illustrate the main components. The
610 mm (24 in) printer (not shown) has the same components in a narrower body.
Front view
1.Ink cartridge
2.Ink cartridge slots
3.Blue lever
4.Window
5.Front panel
6.Printhead carriage
7.Printhead
8.Output tray
9.Paper alignment lines
10.Basket
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							Rear view
HP Designjet T1200 series HP Designjet T770 series
1.Roll cover
2.Communication ports
3.Power switch
4.Power socket
5.Spindle
6.Spindle stop
7.Paper roll
8.Quick Reference Guide holder
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							Communication ports
1.USB 2.0 port, to connect a computer
2.Ethernet port, to connect to a network
3.Diagnostic LEDs, to be used by service engineers
4.USB 2.0 host port, to connect an accessory
The wall spacers
If you place the printer with its back against a wall, lower the two wall spacers at the rear of the printer
to ensure that the rear of the printer is a minimum distance from the wall. Otherwise, you may
experience paper advance problems.
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							The front panel
Your printers front panel is located on the front of the printer, in the center. It has the following
important functions:
●Assists you in troubleshooting issues
●Is used to perform certain procedures, such as cutting and unloading paper
●Displays helpful animations to guide you through procedures
●Displays up-to-date information about the status of the printer such as, the ink cartridges, the
printheads, the paper and the print jobs
●Displays warning and error messages, when appropriate, along with audio alerts to call attention
to a warning or message
●Can be used to change the values of printer settings and thus change the operation of the
printer. However, settings in the front panel are overridden by settings in the printer drivers, see
Installing the software on page 11
HP Designjet T1200 series HP Designjet T770 series
The front panel has the following components, starting with the four direct-access keys:
1.View ink levels key: see 
Check the ink cartridges status on page 113.
2.View information key. By pressing this key repeatedly, you can see information about all loaded
papers (roll 1, roll 2, sheet) and about the printers connection to the computer. See 
View
information about the paper on page 42.
3.Pause printing key (T1200 series) pauses printing after finishing the current page. Press the key
again to restart printing. This can be useful, for instance, when you want to change or load a roll.
Unload paper key (T770 series) unloads the currently-loaded paper (roll or sheet).
4.Form feed and cut key: see 
Feed and cut the paper on page 45.
5.Front-panel display - Displays errors, warnings and information on using your printer.
6.Back key - To go to the previous step in a procedure or interaction. To go to the upper level, or
leave the option in the menu, or when given an option.
7.Menu key - Press to return to the main menu of the front-panel display. If you are already on the
main menu it will display the status screen.
8.Down key - To go down in a menu or option, or to decrease a value, for example when
configuring the front-panel display contrast or the IP address.
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							9.Power key - To turn the printer off or on, it also has a light to indicate the printers status. If the
power key light is off the printer is off. If the power key light is blinking green, the printer is
starting up. If the power key light is green on, the printer is on. If the power key light is amber on,
the printer is in standby. If the power key light is blinking amber, the printer needs attention.
10.Cancel key - To abort a procedure or interaction.
11.Up key - To go up in a menu or option, or to increase a value, for example when configuring the
front-panel display contrast or the IP address.
12.OK key - To confirm an action while in a procedure or interaction. To enter in a submenu in the
menu. To select a value when given an option. If the status screen is displayed, this key takes
you to the main menu.
13.Status light - Indicates the printers status. If the Status light is solid green, the printer is ready. If
it is flashing green, the printer is busy. If it is solid amber, there is a system error. If it is flashing
amber, the printer needs attention.
To highlight an item in the front-panel display, press the Up or Down key until the item is highlighted.
To select an item in the front-panel display, first highlight it and then press the OK key.
When this guide shows a series of front-panel display items like this: Item1 > Item2 > Item3, it means
that you should select Item1, then select Item2, then select Item3.
Information about specific uses of the front panel can be found throughout this guide.
Printer software
The following software is provided with your printer:
●The HP-GL/2 and HP RTL driver for Windows
●The PCL3 raster driver for Mac OS (T770 and T1200)
●The PostScript drivers for Windows and Mac OS (T770 PS and T1200 PS)
●The HP Utility, see 
Access the HP Utility on page 27, allows you to:
◦Manage the printer including color with the HP Color Center
◦View the status of the ink cartridges, the printheads and the paper
◦Access the HP Knowledge Center, see 
Knowledge Center on page 180
◦Update the printers firmware, see 
Update the firmware on page 125
◦Perform calibrations and troubleshooting
◦Manage the job queue, see 
Job queue management on page 103
◦View job accounting information, see 
Retrieving printer usage information on page 109
◦Change various printer settings (in the Settings tab) (T1200 series only)
●The Embedded Web Server runs in the printer and enables you to use a Web browser on any
computer to check ink levels and printer status, see 
Access the Embedded Web Server
on page 27.
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							The printers internal prints
The internal prints give various kinds of information about your printer. They can be requested from
the front panel without using a computer.
Before requesting any internal print, check that the printer and the paper are ready for printing.
●The print will be made on the active roll. To change the active roll, select the Paper menu icon
, then Select active roll.
●The loaded paper should be at least A3 landscape—420 mm (16.53in) wide—otherwise the print
may be clipped.
●The front panel should be displaying the Ready message.
To print any internal print, select the Internal Prints menu icon 
, then select the internal print you
want. The following internal prints are available.
●Demo prints: show some of the capabilities of the printer
◦Print drawing demo
◦Print rendering demo
◦Print GIS map
●Menu map: shows details of all the front-panel display menus
●Configuration: shows all the current front-panel display settings
●Usage report: shows estimates of the total number of prints, number of prints by paper type,
number of prints by print-quality option and total amount of ink used per color (the accuracy of
these estimates is not guaranteed) (T770 HD and T1200 series only)
●HP-GL/2 palette: shows the color or grayscale definitions in the currently selected color palette
●Service information: provides information needed by service engineers
●PostScript font list: shows PostScript fonts available (PostScript printers only)
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							2 Installing the software
●Choose which connection method to use
●
Connect to a network (Windows)
●
Connect directly to a computer (Windows)
●
Uninstall the printer software (Windows)
●
Connect to a network (Mac OS)
●
Connect directly to a computer (Mac OS)
●
Uninstall the printer software (Mac OS)
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							Choose which connection method to use
The following methods can be used to connect your printer.
Connection type Speed Cable length Other factors
Ethernet Very fast; varies
according to network
trafficLong: 100 m (328 ft) Requires extra equipment (switches)
Jetdirect print server
(optional accessory)Moderate; varies
according to network
trafficLong: 100 m (328 ft) Requires extra equipment (switches)
Provides additional features
See 
http://www.hp.com/go/jetdirect/ for
more details
USB 2.0 Very fast Short: 5 m (16 ft) A certified USB 2.0 cable is necessary for
reliable communication.
NOTE:The speed of any network connection depends on all components used in the network,
which can include network interface cards, hubs, routers, switches and cables. If any one of these
components cannot operate at high speed, you will have a low-speed connection. The speed of your
network connection can also be affected by the total amount of traffic from other devices on the
network.
Connect to a network (Windows)
Before you begin, check your equipment:
●The printer should be set up and on.
●The Ethernet hub or router should be on and functioning correctly.
●All computers on the network should be on and connected to the network.
●The printer should be connected to the network.
Now you can proceed to install the printer software and connect your printer:
1.Make a note of the printers IP address from the front panel (see 
Access the Embedded Web
Server on page 27).
2.Insert the HP Start-Up Kit CD into your computer. If the CD does not start automatically, run the
autorun.exe program in the root folder of the CD.
3.Press the Express Network Install button, and choose your printer from the list of networked
printers that appears, identifying it by its IP address if necessary. The printer drivers and the HP
Utility are installed.
If your computer fails to find any printers on the network, the Printer Not Found window is displayed,
which helps you to try to find your printer. If you have a firewall in operation; you may have to disable
it temporarily in order to find the printer. You also have the options of searching for the printer by its
URL, IP address or MAC address.
Connect directly to a computer (Windows)
You can connect your printer directly to a computer without going through a network, by using the
printers built-in USB 2.0 port.
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Software installation