HP Color LaserJet 2840 User Manual

							Control panel messageDescriptionRecommended action
Unsupported Memory CardThe memory card that you have inserted
is not a type that is supported.Insert a card that is supported. See
Inserting a memory card.
Critical error messages
Critical error messages can indicate some kind of failure. Cycling the power might fix the
problem. If a critical error persists, the device might require service.
Critical error messages
Control panel messageDescriptionRecommended action
50.x Fuser ErrorThe device has experienced an internal
hardware error.Turn off the device, and then disconnect
the power cord. Remove the fuser (see
To clear output area jams), and then
wait at least 20 minutes. Reinstall the
fuser, turn on the device, and then wait
for the device to initialize.
CAUTION
The parts on the internal surface of the
fuser are very hot. To avoid burning
yourself, do not touch those parts.
If a surge protector is being used,
remove it. Plug the device directly into
the wall socket. Use the power switch to
turn on the device.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
51 Laser ErrorThe device has experienced an internal
hardware error.Turn off the power by using the power
switch, wait at least 30 seconds, and
then turn on the power and wait for the
device to initialize.
If a surge protector is being used,
remove it. Plug the device directly into
the wall socket. Use the power switch to
turn the device on.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
Alert and warning messages  (continued)
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							Control panel messageDescriptionRecommended action
52 Scanner ErrorThe device has experienced an internal
hardware error.Turn off the power by using the power
switch, wait at least 30 seconds, and
then turn on the power and wait for the
device to initialize.
If a surge protector is being used,
remove it. Plug the device directly into
the wall socket. Use the power switch to
turn the device on.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
54.2, 55.1, 59.16, 59.192, 59.4,
59.99 ErrorsThe device has experienced an internal
hardware error.Turn off the power by using the power
switch, wait at least 30 seconds, and
then turn on the power and wait for the
device to initialize.
If a surge protector is being used,
remove it. Plug the device directly into
the wall socket. Use the power switch to
turn the device on.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
57 Fan Error Turn off then onThe device has experienced a problem
with its internal fan.Turn off the power by using the power
switch, wait at least 30 seconds, and
then turn on the power and wait for the
device to initialize.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
79 Error Turn off then onThe device has experienced an internal
firmware error.Turn off the power by using the power
switch, wait at least 30 seconds, and
then turn on the power and wait for the
device to initialize.
If you have recently installed a memory
DIMM in the device, turn off the device,
remove the memory DIMM, reinstall the
DIMM to verify that it is seated properly,
and then turn on the device.
If a surge protector is being used,
remove it. Plug the device directly into
the wall socket. Use the power switch to
turn the device on.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
Critical error messages (continued)
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							Control panel messageDescriptionRecommended action
Engine errorThe device has experienced an engine
error.Press ENTER to clear the message.
Turn off the power by using the power
switch, wait at least 30 seconds, and
then turn on the power and wait for the
device to initialize.
If a surge protector is being used,
remove it. Plug the device directly into
the wall socket. Use the power switch to
turn the device on.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
Sensor errorThe device has experienced an internal
sensor error.Turn off the power by using the power
switch, wait at least 30 seconds, and
then turn on the power and wait for the
device to initialize.
If a surge protector is being used,
remove it. Plug the device directly into
the wall socket. Use the power switch to
turn the device on.
If the error persists, contact
HP Customer Care. See 
Service and
support or the support flyer that came in
the device box.
Critical error messages (continued)
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							Clearing jams
This section contains instructions for clearing jams from the device.
Media jams occur in the device
Occasionally, paper or other print media can become jammed during a print job. Some
causes include the following events:
●The input trays are loaded improperly or overfilled, or the media guides are not set
properly.
●Optional tray 2 is removed during a print job.
●The top cover is opened during a print job.
●Too many sheets have accumulated in an output area, or sheets are blocking an output
area.
●The print media that is being used does not meet HP specifications. See 
Media
specifications.
●The media is damaged or has foreign objects attached to it, such as staples or paper
clips.
●The environment in which the print media was stored is too humid or too dry. See
Printing and storage environment.
Tips to avoid media jams 
●Verify that the input tray is not overfilled. The input tray capacity varies depending on the
type of print media that you are using.
●Verify that the media guides are properly adjusted.
●Check that the input tray is securely in place.
●Do not add print media into the input tray while the device is printing.
●Use only HP-recommended media types and sizes. See 
Media specifications for more
information about print media types.
●Do not let print media stack up in the output bin. The print media type and the amount of
toner used affect the output bin capacity.
●Check the power connection. Make sure that the power cord is firmly connected to both
the device and the power supply box. Plug the power cord into a grounded AC power
outlet.
Where to look for jams
Jams can occur in these locations:
●inside the device
●in output areas
●in the automatic document feeder (ADF)
Find and remove the jam by using the instructions on the following pages. If the location of
the jam is not obvious, first look inside the device.
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							Loose toner might remain in the device after a jam. This problem typically resolves itself after
a few sheets have been printed.
To clear a media jam inside the device
CAUTIONMedia jams might result in loose toner on the page. If toner gets on your clothing, wipe the
toner off with a clean cloth, wash the items in cold water, and air dry. Using hot water or heat
from a dryer will set the toner in the fabric. If you get any toner on your hands, wash them in
cold water.
Do not use a sharp object, such as a pencil or scissors, to remove jammed media.
1. On the back of the device, open the rear-output door, and then push down the fuser
levers.
Releasing the fuser levers relieves tension on the device rollers, which makes removing
jammed pages easier.
2. Push the scanner-release button to open the scanner assembly.
3. Open the top cover, and then remove the image drum and set it aside.
4. With both hands, grasp the side of the media that is most visible (this includes the
middle), and carefully pull it free from the device.
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							5. When you have removed the jammed media, replace the image drum, and close the top
cover and the scanner assembly.
6. Return the fuser levers to their original upward position.
After clearing the media jam, you might need to turn the device off, and then turn it on again.
Note
When you add new media, remove all of the media from the input tray, straighten the stack
after adding the new media, place the stack in the tray, and then adjust the media guides.
To clear output area jams
If the media has jammed where it exits the device, complete the following steps.
CAUTION
Do not use a sharp object, such as a pencil or scissors, to remove jammed media.
1. Push the scanner-release button to open the scanner assembly, and then open the top
cover.
2. On the back of the device, open the rear-output door, and then push down the fuser
levers.
Releasing the fuser levers relieves tension on the device rollers, which makes removing
jammed pages easier.
3. Grasp the leading edge of the media and pull the media out through the output bin.
4. Return the fuser levers to their original upward position, and then close the rear-output
door.
5. Close the top cover and the scanner assembly.
Note
If you turned the device off before clearing the media jam, turn it on again, and then restart
your printing or copying job.
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							If the jam is too far into the device to remove, you might have to remove the fuser. To do so,
complete the following steps.
1. Turn off the device, and then disconnect the power cable.
2. Rotate the locks on the fuser to the unlocked position.
3. Grasp the fuser handles and pull them to remove the fuser from the device.
CAUTIONThe parts on the internal surface of the fuser are very hot. To avoid burning yourself, do not
touch those parts.
4. Using both hands, slowly and steadily remove any print media from inside the device.
Then, carefully reinsert the fuser and secure the locks.
5. Reconnect the power cable, and then turn on the device.
Media jams occur in the automatic document feeder (ADF)
Occasionally, media becomes jammed during a copy, scan, or fax job.
You are notified of a media jam by the Doc feeder jam Clear, Reload message that
appears on the device control-panel display.
●The ADF input tray is loaded incorrectly or is too full. See 
To load originals into the
automatic document feeder (ADF) for more information.
●The media does not meet HP specifications, such as those for size or type. See 
Media
specifications for more information.
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							To clear a media jam from the automatic document feeder (ADF)
1. Open the ADF cover.
NoteVerify that any shipping tape inside the ADF has been removed.
2. Remove the jam cleanout part. Using both hands, lift up on the two handles until the part
unsnaps. Rotate and lift out the cleanout part and set it aside.
3. Lifting the green lever, rotate the pick mechanism until it stays open.
4. Gently try to remove the page without tearing it. If you feel resistance, go to the next step.
5. Open the ADF lid and gently loosen the media by using both hands.
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							6. When the media is free, gently pull it out in the direction shown.
7. Close the lid to the flatbed scanner.
8. Lower the green lever.
9. Reinstall the cleanout part by inserting it as shown. Push down on the two tabs until the
part snaps into place. Install the cleanout part correctly, because future jamming might
occur if the cleanout part is not replaced correctly.
10. Close the ADF lid.
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							Print problems
Print quality problems
Occasionally, you might encounter problems with print quality. The information in the
following sections helps you identify and resolve these issues.
Note
If you are having copy problems, see Copy problems.
Improving print quality
Use the print-quality settings to prevent print-quality problems.
Understanding print-quality settings
Print-quality settings affect how light or dark the print is on the page and the style in which
the graphics are printed. You can also use the print-quality settings to optimize the print
quality for a specific media type.
You can change the settings in the device properties to accommodate the types of jobs that
you are printing. The following settings are available, depending on the printer driver that
you are using:
●600 dpi
●Custom: This setting produces the same resolution as the default setting, but you can
change the scale patterns.
Note
Changing the resolution can change the formatting of your text.
To temporarily change print-quality settings
To change the print-quality settings only for the current software program, open the
properties through the Print Setup menu in the program that you are using to print.
To change print-quality settings for all future jobs
Note
For Macintosh instructions, see Printing from the Macintosh OS for more information.
For Windows 98, Windows 2000, and Windows Me:
1. In the Windows system tray, click Start, select Settings, and then click Printers.
2. Right-click the device icon.
3. Click Properties (in Windows 2000, you can also click Printing Preferences).
4. Change the settings, and click OK.
For Windows XP:
1. In the Windows system tray, click Start, click Control Panel, and then click Printers
and Faxes.
2. Right-click the device icon.
3. Click Properties, or click Printing Preferences.
4. Change the settings, and click OK.
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