HP Color LaserJet 2840 User Manual

							HP policy on non-HP supplies
Hewlett-Packard Company cannot recommend the use of non-HP supplies, either new or
remanufactured. Because they are not HP products, HP cannot influence their design or
control their quality. Service or repairs required as a result of using a non-HP supply will not
be covered under the printer warranty.
When you insert a supply into the device, the device will inform you if the supply is not a
genuine HP supply. If you insert a genuine HP supply that has reached the low state from
another HP device, the device identifies the supply as non-HP. Simply return the supply to
the original device to reactivate the HP features and functionality.
Resetting the printer for non-HP supplies
When you install a non-HP print cartridge or imaging drum, the control panel displays the
Unauthorized message . In order to print with this supply, you must press E
NTER the first
time you install this non-HP supply.
CAUTION
The device will not stop printing when this type of supply is empty. Printer damage could
occur if the device prints with an empty non-HP print cartridge or imaging drum. See 
Hewlett-
Packard limited warranty statement and Print Cartridge and Imaging Drum Limited Warranty
Statement.
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							HP fraud hotline
Call the HP fraud hotline if the device or HP Toolbox indicates that the print cartridge or
imaging drum is not an HP print cartridge and you think that it is genuine. HP will help
determine if the product is genuine and take steps to resolve the problem.
Your print cartridge or imaging drum might not be a genuine HP one if you notice the
following issues:
●You are experiencing a large number of problems with the print cartridge or imaging
drum.
●The print cartridge or imaging drum does not look like it usually does (for example, the
pull tab or the box is different).
In the United States, call toll-free: 877-219-3183.
Outside the United States, you can call collect. Dial the operator and ask to place a collect
call to this telephone number: 770-263-4745. If you do not speak English, a representative at
the HP fraud hotline who speaks your language will assist you. Or, if someone who speaks
your language is not available, a language line interpreter will connect approximately one
minute after the beginning of the call. The language line interpreter is a service that will
translate between you and the representative for the HP fraud hotline.
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							Changing a print cartridge
To replace a print cartridge
1. Push the scanner-release button to open the scanner assembly.
2. Open the top cover.
3. Make sure that the correct print-cartridge slot is in the access position.
●If the correct print-cartridge slot is not in the access position, close the top cover and
the scanner assembly, and then press R
OTATE CAROUSEL until the correct print-
cartridge slot is in the correct position.
4. Pinch together the two large blue tabs on the first cartridge, and then lift the cartridge
straight up to remove it from the carousel.
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							5. Remove the new print cartridge from its packaging, remove the orange cover from the
print cartridge, and then pull the orange tab straight out to remove the sealing tape.
6. Squeeze the blue release levers on the print cartridge, holding it with the roller facing
you. Lower the cartridge straight down into the carousel until it is firmly in place.
●If you need to replace another cartridge, close the top cover and the scanner
assembly, press R
OTATE CAROUSEL, and then repeat steps 4 through 6.
7. Close the top cover, and then close the scanner assembly.
Note
If you have replaced a black print cartridge, the device prompts you to run a cleaning page.
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							Changing the imaging drum
To change the imaging drum
1. Push the scanner-release button to open the scanner assembly.
2. Open the top cover.
3. Grasp the imaging drum handle, and then rotate the drum until the handle is at the top.
4. Lift the imaging drum straight up to remove it from the device.
5. Remove the new imaging drum from its packaging.
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							6. Place the imaging drum on a firm surface, and then pull the orange rings to remove the
shipping pins.
7. Remove the orange shipping lock on each end of the imaging drum, and remove the two
orange shipping spacers.
8. Remove the orange cover from the imaging drum.
CAUTIONDo not touch the surface of the roller or expose the roller to light for an extended period of
time. Doing so could cause print-quality issues.
9. Align the arrows on the side of the imaging drum with the arrows inside the printer.
10. Lower the imaging drum into the printer, and then press it firmlyinto place.
11. Close the top cover and the scanner assembly.
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							14
Troubleshooting
This troubleshooting information is organized to help you resolve printing problems. Choose
the general topic or type of problem from the following list.
●
Support strategy
●
Troubleshooting process
●
Control panel messages
●
Clearing jams
●
Print problems
●
Scan problems
●
Copy problems
●
Fax problems
●
Memory card problems
●
Troubleshooting tools
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							Support strategy
This device has a one-year limited warranty. Warranty service and support options might
vary depending on your country/region. Please refer to the support flyer that came in your
box for contact information, or visit http://www.hp.com.
You can find additional support information in 
Service and support.
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							Troubleshooting process
Use the troubleshooting checklist to solve issues with the device.
Troubleshooting checklist
Follow the steps below when trying to solve a problem with the device.
Step
numberVerification stepPossible problemsSolutions
1Is the power on?
When the device is
connected to a grounded
power source, the control
panel shows Hewlett
Packard with moving
cursors indicating that the
firmware code is loading,
and the print engine motor
rotates for approximately
45 to 60 seconds. When
the firmware is done
loading, Scanner bulb
warming up appears in
the control panel, and the
scan head moves back
and forth for 10-15
seconds. If you lift the
scanner lid, you will see
that the scanner bulb is lit.
Near the end of this time,
the automatic document
feeder (ADF) motor turns
on for about two seconds.No power due to failed power source,
cable, switch, or fuse.1. Verify that the device is plugged in.
2. Verify that the power cable is
functional and that the power
switch is on.
3. Check the power source by
plugging the device directly into
the wall or into a different outlet.
Print engine motor does not rotate.1. Verify that the fuser shipping
locks have been removed. For
more information, see the Getting
Started Guide.
2. Verify that the fuser locks are in
the locked position. See 
To clear
output area jams.
3. Verify that the print cartridges
and imaging drum are properly
installed. (See 
Managing
supplies.) Look at the control-
panel messages and follow the
instructions to remove and
replace the cartridges.
4. Verify that the top cover is closed.
ADF motor does not rotate.Open the ADF cover and remove any
orange shipping tape inside the ADF.
Verify that the ADF cable is
connected correctly to the scanner.
See 
Changing the automatic
document feeder (ADF).
If the ADF motor still does not rotate,
replace the ADF. See 
Changing the
automatic document feeder (ADF).
Scanner bulb does not light.If the scanner bulb does not light,
contact HP Customer Care. See
Service and support or the support
flyer that came in the device box.
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							Step
numberVerification stepPossible problemsSolutions
2Does Ready appear in
the device control panel?
The control panel should
function without error
messages.Control panel shows an error.See Control panel messages for a list
of common messages that will help
you correct the error.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came
in the device box.
3Do information pages
print?
Print a Configuration page.
See 
Configuration page.
Control panel displays an error
message.See Control panel messages for a list
of common messages that will help
you correct the error.
Media does not move smoothly
through the device paper path.Clean the paper path. See Clean the
paper path.
Poor print quality.See Print quality problems.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came
in the device box.
4Does the device copy?
Place the Configuration
page into the ADF and
make a copy. The report
should feed smoothly
through the ADF, and
copies should print without
print-quality problems.
Make a copy from the
flatbed as well.Poor copy quality from the ADF.1. If the print quality from the
internal tests and the copy from
the flatbed were acceptable,
clean the ADF scanning strip.
See 
To clean the scanner glass.
2. If the ADF is damaged, replace
the ADF. See 
Changing the
automatic document feeder (ADF).
Media does not move smoothly
through the ADF path.1. Clean the ADF pick roller and
ADF separation pad. See
Cleaning the automatic document
feeder (ADF) pickup roller
assembly.
2. If the problem persists, replace
the ADF pick roller. See
Changing the automatic
document feeder (ADF) pickup
roller assembly.
3. If the problem persists, replace
the ADF. See 
Changing the
automatic document feeder (ADF).
Poor copy quality from the flatbed.1. If the print quality from the
internal tests and the copy from
the ADF were acceptable, clean
the flatbed glass. See 
To clean
the scanner glass.
2. If, after performing the
maintenance, the problem
persists, see 
Copy problems.
If the error persists, contact HP Customer Care. See Service and support or the
support flyer that came in the device box.
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