HP OfficeJet Pro K850 User Manual

							NOTEThis information is intended to be an easy-to-read summary of the full HP warranty
statement. To read the full warranty statement, go to 
www.hp.com/support/inkjet_warranty
and select your supply.
Is your product covered under warranty?
If you believe your ink supply or printhead is defective, you may return it for a refund or replacement
provided that ALL of the following are true:
●Ink supply: It is not out of ink.
●Printhead: It has not exceeded its warranted usage:
●Black printhead: 530 ml
●Color printhead: 200 ml
NOTETo determine the volume of ink that has passed through the printhead currently
installed in your printer, see Accumulated ink usage (ml) in the Printhead Status section of
the configuration page. See 
Printing a configuration page.
●Ink supply: It has not been refilled, remanufactured, or otherwise tampered with.
●Printhead or ink supply: Its end of warranty date has not passed. Look at the illustration below
to find the date location for your product.
End of warranty date locations
Date format: YYYYMMDD
Figure 1: New printheadsFigure 2: Older printheadsFigure 3: Ink supplies
Install-by date
Make sure to install your product before the install-by date printed on the supply package. Installing
before or on the install-by date ensures that you will have at least the following before the end-of-
warranty date:
●Printhead: one year (subject to accumulated ink usage limit)
●Ink supply: six months
HP Inkjet supplies - expiration
As ink ages, it loses water. When ink is old enough, it can damage the printheads or other parts of
the printing system. In normal use, most cartridges will run out of ink long before the ink is old
enough to cause damage. However, to prevent any possibility of damage, HP printers that use the
cartridges listed above are designed to stop printing with the cartridges before the ink gets too old.
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							See Expiration date (Y-M-D) located in the Ink Cartridge Status section of the configuration page.
See 
Printing a configuration page.
●Expiration has nothing to do with the product warranty. For information about the warranty on
your ink cartridge, see 
www.hp.com/support/inkjet_warranty.
●Expiration prevents damage from old ink. When ink cartridges expire, they stop working and
must be replaced.
How do you return a product?
There are two ways to return a product under warranty:
●Visit the retailer where you bought the product (subject to the retailers return policy).
●If you cannot return the product to the retailer, call the support phone number listed on the
product insert that came in the box with the product.
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							8 Printer lights reference
The printer lights indicate printer status and are useful for diagnosing printing problems. This section
contains information about the printer lights, what they indicate, and what action to take if necessary.
Control panel lights
1
Power button and light
2
Cancel button
3
Resume button and light
4
Paper Jam light
5
Door Open light
6
Out of Paper light
7
Color indicator lights
8
Printhead light
9
Ink Cartridge light
Network connector lights (HP Officejet Pro K850dn Color Printer)
1 Link light
2 Activity light
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							Interpreting control panel lights
This section briefly explains some of the messages that might appear on the printer lights display.
Printer light indicationExplanation and recommended action
No lights are on.The printer is off.
▲
Press 
 (Power button).
The Power light is on.The printer is ready.
▲No action is required.
The Power light blinks.The printer is turning on or off or
processing a print job, or a print job has
been cancelled.
▲No action is required.
The printer is pausing for the ink to dry.
▲No action is required. Wait for the ink
to dry.
The Power light is on and the Resume light blinks.The printer is in manual duplex mode. It is
waiting for the ink to dry so the pages can
be flipped over and reloaded.
▲Reload the stack into the printer and
press 
 (Resume button).
The printer has printed a banner, and the
banner needs to be removed from the
printer.
▲
Press 
 (Resume button) to remove
the banner from the printer.
The width of the paper in the In tray does
not match the width selected in the printer
driver.
▲Reload paper of the required width in
the In tray, and then press 
 (Resume
button).
The printer carriage has stalled.
●
Press 
 (Resume button) to continue
printing.
●If the error persists, turn the printer off,
and then on again. See 
Troubleshooting.
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							Printer light indicationExplanation and recommended action
The Power light is on and the Resume light and Paper Jam light blink.Print media is jammed in the printer.
●
Press 
 (Resume button) to eject the
jammed media.
●Remove all media from the output tray.
Locate and clear the jam (see 
Clearing
jams). After clearing the jam, press 
(Resume button) to continue the print
job.
The Power light is on and the Resume light and Out of Paper light blink.The printer is out of paper.
▲
Load paper and then press 
(Resume button).
The Power light and the Door Open light are on.A cover is not closed completely.
▲Make sure all covers are completely
closed.
The Power light is on and the Door Open light blinks.The rear-access panel or the automatic
two-sided printing accessory (duplex unit)
is not inserted completely.
▲Make sure the rear-access panel or
the duplex unit is inserted completely
in the back of the printer.
The Power light is on, and the Door Open and Printhead lights are on.The printhead latch is not secured.
▲Open the top cover and press down
firmly on the printhead latch to ensure
that it is secured properly.
The Power light is on, and the Printhead light and one or more of the color
indicator lights blink.One or more of the printheads needs
attention.
●Reinstall the appropriate printheads,
close all covers, and then try to print.
●If the error persists, turn the printer off,
and then on again.
●If the error persists, clean the
printhead contacts (see 
Maintainingthe printheads).
●If the error persists, replace the
printhead or printheads indicated. See
HP supplies and accessories for
information about ordering supplies.
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							Printer light indicationExplanation and recommended action
The Power light, the Printhead light, and one or more of the color indicator
lights are on.One or more of the printheads is missing.
●Make sure that the protective tape on
the printhead has been removed.
●Reinstall the printheads, close all
covers, and then try to print.
The Power light is on and one or more of the color indicator lights is on.An ink cartridge is low on ink and will need
to be replaced soon.
▲No action is required.
The Power light is on and one or more of the color indicator lights blinks.An ink cartridge is out of ink and must be
replaced before you can continue printing.
▲Replace the ink cartridge indicated.
See 
HP supplies and accessories for
information about ordering supplies.
The Power light, the Ink Cartridge light, and one or more of the color indicator
lights are on.One or more of the ink cartridges is missing.
●Install the ink cartridges and try to print.
●If the error persists, replace the ink
cartridge or cartridges indicated. See
HP supplies and accessories for
information about ordering supplies.
The Power light is on, and the Ink Cartridge light and one or more of the color
indicator lights blink.One or more of the ink cartridges is faulty
or has expired.
▲Replace the ink cartridge indicated.
See 
HP supplies and accessories for
information about ordering supplies.
The Power light and one or more of the color indicator lights are on, and the
Ink Cartridge light blinks.A non-HP ink cartridge is installed.
CAUTIONDamage to the printer
that results from modifying or
refilling the ink cartridges, or from
using non-HP ink cartridges, is not
covered under the warranty.
●If you thought that this ink cartridge
was an HP ink cartridge, return it to
the place where you purchased it. Buy
and install an HP ink cartridge.
●If you choose to use a non-HP ink
cartridge, press and hold down 
(Power button) and press  (Resume
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							Printer light indicationExplanation and recommended action
button) three times. All lights except
the Power light go off. Damage that
results to the printer from using this
cartridge is not covered under the
warranty.
The Power light blinks. All control panel lights are on.One or more printer errors have occurred.
●Cancel all jobs from the printer queue.
●Turn the printer off and wait for about
10 seconds before turning on the
printer again. Try printing again.
●If the problem persists, see 
Supportand warranty.
Interpreting network connector lights
This section briefly explains some of the patterns that might appear on the network connector lights.
Network connector light indication Explanation and recommended action
Link light is on. Activity light is off. The printer is connected to the network but is not
receiving or transmitting data over the network. The
printer is turned on and idle.
▲No action is required.
Link light is on. Activity light blinks. The printer is receiving or transmitting data over the
network.
▲No action is required.
Link light is off. Activity light is off.  The printer is turned off or is not connected to the network.
▲Turn on the printer. If the printer is already turned on
and a network cable is connected, see 
Troubleshooting.
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							9 Printer specifications
This section provides information on physical, system, and functional specifications for the printer.
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							Physical specifications
For media and media-handling specifications, see Selecting print media.
Available models and physical
dimensionsSize (width by depth by height)610 by 376.8 by 205 mm (24 by 14.8
by 8.1 inches)
▲With duplex unit: 610 by 524.8 by
205 mm (24 by 20.6 by 8.1 inches)
Weight (does not include printheads or
ink cartridges)12.3 kg (27.1 lbs)
▲With duplex unit: 14.3 kg (35.1 lbs)
112 Chapter 9   Printer specifications ENWW