HP Color LaserJet 2840 User Manual

							ProblemCauseSolution
Copies are blank. The sealing tape might not
have been removed from the
print cartridges.Remove the print cartridges
from the device, pull out the
sealing tape, and reinstall the
print cartridges.
The original might have been
loaded incorrectly.In the ADF, load the original
with the narrow side forward
and the side to be scanned
facing up.
On the flatbed scanner, make
sure that the original document
is placed face-down with the
upper-left corner of the
document at the lower-right
corner of the glass.
The media might not meet
HP specifications.Use media that meets
HP specifications. See 
Media
specifications.
One or more print cartridges
might be low.Replace any low print
cartridges. See 
Changing a
print cartridge.
The wrong original was copied.The ADF might be loaded.Make sure that the ADF is
empty.
Copies are reduced in size. The device software settings
might be set to reduce the
scanned image.See the HP Toolbox Help for
more information about
changing the settings.
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							Fax problems
This section helps you identify and resolve fax problems.
Problems receiving faxes
Use the table in this section to solve problems that might occur when receiving faxes.
Note
You must use the fax cord that came with the device in order to ensure that the device
functions correctly.
ProblemCauseSolution
The device cannot receive
faxes from an extension
telephone.The extension-telephone
setting might be disabled.See Making an extension
telephone available to receive
faxes for instructions about
changing this setting.
The fax cord might not be
securely connected.Verify that the fax cord is
securely connected between
the telephone jack and the
device (or another device that
is connected to the device).
Press 1-2-3 in sequence (tone-
dial mode only), wait for three
seconds, and then hang up.
The device dialing mode might
be incorrectly set, or the
extension phone might be
incorrectly set.Verify that the device dialing
mode is set to Tone. See
Selecting tone-dialing or pulse-
dialing mode. Verify that the
extension phone is set up for
tone dialing as well.
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							ProblemCauseSolution
Incoming fax calls are not
being answered by the device.The answer mode might be set
to Manual.If the answer mode is set to
Manual, the device does not
answer calls. You have to start
the fax-receiving process
manually. See 
Setting the
answer mode for more
information.
The rings-to-answer setting
might not be set correctly.Check the rings-to-answer
setting for your configuration.
See 
Changing the rings-to-
answer setting to determine
which setting you need.
The answer-ring pattern feature
might be turned on, but you do
not have the service, or you do
have the service and the
feature is not set correctly.Check the answer-ring pattern
feature to verify that it is set
properly. See 
Changing ring
patterns for call answering.
The fax cord might not be
correctly connected, or the fax
cord is not working.See the Getting Started Guide
to check the installation. Verify
that you are using the fax cord
that came with the device.
The device might not be able to
detect incoming fax tones
because the answering
machine is playing a voice
message.Re-record your answering
machine message, leaving at
least two seconds of silence at
the beginning of the message.
Too many devices might be
connected to the telephone line.You should not have more than
three devices attached to the
line. Try removing the last
device that was connected and
determine whether the device
works. If not, continue
removing devices one at a time
and retry after removing each
one.
The telephone line might not be
working.Do one of the following:
●Increase the volume on
the device, and then press
S
TART FAX on the control
panel. If you hear a dial
tone, the telephone line is
working.
●Disconnect the device
from the telephone jack,
and then connect a
telephone. Try to make a
telephone call to verify that
the telephone line is
working.
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							ProblemCauseSolution
Incoming fax calls are not
being answered by the device.A voice-messaging service
might be interfering with the
device as it attempts to answer
calls.Do one of the following:
●Disable the messaging
service.
●Get a telephone line that is
dedicated to fax calls.
●Set the device answer
mode to Manual. In
manual mode, you must
start the fax-receive
process yourself. See
Setting the answer mode
for more information.
●Leave the device set to
automatic mode and lower
the rings-to-answer setting
for the device to a number
less than the rings-to-
answer setting for the
voice mail (see 
Changing
the rings-to-answer
setting). The device will
answer all incoming calls.
The device might be out of
paper and the memory is full.Refill the media input tray.
Press E
NTER. The device prints
all of the faxes it has saved in
memory and then resumes
answering fax calls.
Faxes are not printing.The media input tray is empty.Load media. Any faxes that are
received while the input tray is
empty are stored in memory
and will print after the tray has
been refilled.
The receive-to-PC option might
be selected, and faxes are
being received by the computer.Check to determine whether
the computer is receiving
faxes. See 
Receiving faxes to
your computer.
Faxes are printing on two
pages instead of one.The autoreduction setting might
not be set correctly.Turn on the autoreduction
setting. See 
Changing
autoreduction settings for
incoming faxes.
The incoming faxes might have
been sent on larger media.Adjust the autoreduction setting
to allow larger pages to be
printed on one page. See
Changing autoreduction
settings for incoming faxes.
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							ProblemCauseSolution
Received faxes are too light or
are printing only on half of the
page.The device ran out of toner
while printing a fax.The device stores the most
recently printed faxes. (The
amount of memory that is
available determines the actual
number of faxes stored for
reprinting.) As soon as
possible, replace the print
cartridge, and then reprint the
fax. See 
Reprinting a fax.
The fax that was sent was too
light.Contact the sender and have
the sender resend the fax after
altering the settings.
Problems sending faxes
Use the information in this table to solve problems that might occur when sending faxes.
ProblemCauseSolution
The document stops feeding in
the middle of faxing.The maximum length of a page
that you can load is 381 mm
(15 inches). Faxing of a longer
page stops at 381 mm (15
inches).Print the document on shorter
media.
If no jam exists and less than
one minute has elapsed, wait a
moment before pressing
C
ANCEL. If a jam exists, see
Clearing jams. Then, resend
the job.
If the item is too small, it can
jam inside the automatic
document feeder (ADF). Use the flatbed scanner. The
minimum page size for the ADF
is 127 by 127 mm (5 by 5
inches).
If a jam exists, see 
Clearing
jams. Then, resend the job.
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							ProblemCauseSolution
Faxes stop during sending.The fax machine to which you
are sending might be
malfunctioning.Try sending to another fax
machine.
Your telephone line might not
be working.Do one of the following:
●Turn up the volume on the
device, and then press
S
TART FAX on the control
panel. If you hear a dial
tone, the telephone line is
working.
●Disconnect the device
from the jack in the wall,
and then connect a
telephone to the jack. Try
to make a telephone call to
verify that the telephone
line is working.
A communication error might
be interrupting the fax job.Change the redial-on-
communication-error setting to
On (see 
To change the redial-
on-communication-error option).
The device is receiving faxes
but is not sending them.If your device is on a PBX
system, the PBX system might
be generating a dial tone that
the device cannot detect.Disable the detect-dial-tone
setting. See 
Changing the
detect-dial-tone setting.
A poor telephone connection
might exist.Try again later.
The fax machine to which you
are sending might be
malfunctioning.Try sending to another fax
machine.
Your telephone line might not
be working.Do one of the following:
●Turn up the volume on the
device and press S
TART
FAX on the control panel. If
you hear a dial tone, the
telephone line is working.
●Disconnect the device
from the telephone jack
and connect a telephone.
Try to make a telephone
call to verify that the
telephone line is working.
Outgoing fax calls continue to
be dialed.The device automatically
redials a fax number if the
redial options are set to On.To stop the redials while the
device is dialing, press C
ANCEL.
To cancel a pending fax job,
see 
Canceling a fax job. See
Changing the redial settings to
change the redial setting.
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							ProblemCauseSolution
Faxes that you send are not
arriving at the receiving fax
machine.The receiving fax machine
might be off or might have an
error condition, such as being
out of paper.Call the recipient to verify that
the fax machine is on and
ready to receive faxes.
The originals might be
incorrectly loaded.Verify that the original
documents are correctly loaded
into the ADF input tray or
flatbed scanner. See 
Loading
trays
A fax might be in memory
because it is waiting to redial a
busy number, other jobs that
are ahead of it are waiting to be
sent, or the fax is set up for a
delayed send.If a fax job is in memory for any
of these reasons, an entry for
the job appears in the fax log.
Print the fax activity log (see
Printing the fax activity log) and
check the Status column for
jobs that show a Pending
designation.
Faxes you send include a block
of gray shading at the end of
each page.You might be sending a fax
from the flatbed scanner with
the glass-fax size set incorrectly.Verify that the setting is correct.
See 
Changing the default glass-
size setting.
Faxes you send have data
missing from the end of each
page.You might be sending a fax
from the flatbed scanner with
the glass-fax size set incorrectly.Verify that the setting is correct.
See 
Changing the default glass-
size setting.
Voice call problems
ProblemCauseSolution
Voice calls are not being
received by the telephone or
answering machine that is
connected to the line.The fax cord might not be
correctly connected.See the Getting Started Guide
to check the installation. The
device must be the first device
connected to the telephone line.
The answer mode or rings-to-
answer settings might not be
correctly set.See Setting the answer mode
or 
Changing the rings-to-
answer setting to determine
which settings you need. The
rings-to-answer must be set
higher than the answering
machine setting.
The answering machine or
telephone might not be
functioning.Connect the telephone or
answering machine directly to
the telephone line and
determine if it works by itself.
Media-handling problems
Use the information in this table to solve problems that involve print media.
Note
For information about removing jams, see Clearing jams.
ENWWFax problems261
 
						

							ProblemCauseSolution
Print is skewed.The media input tray might be
overloaded.Remove some of the media
from the input tray.
The media guides might be
incorrectly set, broken, or
missing.Verify that the guides are not
adjusted too tightly or too
loosely against the paper.
Check for broken or missing
guides, and replace them if
necessary.
The media might not meet
HP specifications.Use media that meets
HP specifications. See 
Media
specifications.
Pages are curled or wrinkled.The media might not meet
HP specifications.Use media that meets
HP specifications. See 
Media
specifications.
The paper path might be
affecting the pages.Open the straight-through
output door on the back of the
printer and use this paper path.
The media is not stored
properly.When possible, store media in
its sealed ream at room
temperature.
The media has been in the
input tray too long.Turn over the stack of media in
the tray or rotate the media
180° in the paper tray.
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							Performance problems
ProblemCauseSolution
Faxes are transmitting or being
received very slowly.The fax might be very complex,
such as one with many graphics.Complex faxes take longer to
be sent or received. Breaking
longer faxes into multiple jobs
and decreasing the resolution
can increase the transmission
speed.
The receiving fax machine
might have a slow modem
speed.The device only sends the fax
at the fastest modem speed
that the receiving fax machine
can accept.
The resolution at which the fax
was sent or is being received
might be very high.If you are receiving the fax, call
and ask the sender to lower the
resolution and resend the fax. If
you are sending the fax, lower
the resolution and resend the
fax. See 
Changing the default
light/dark (contrast) setting to
change the default setting.
Your telephone line might not
be working.Hang up and resend the fax.
Have the telephone company
check the telephone line.
You are sending a fax via an
international call.You must allow more time to
transmit fax jobs internationally.
The fax activity logs or fax call
reports are printing at
inappropriate times.The fax activity log or fax call
reports settings are not correct.Print a Configuration page and
check when the reports print.
For instructions about setting
log or report printing times, see
To set the fax activity log to
print automatically or Setting
print times for the fax call report.
The device sounds are too loud
or too soft.The volume setting might not
be adjusted correctly.See Using the device volume
controls.
ENWWFax problems263
 
						

							Memory card problems
This section helps you identify and resolve memory card-related problems.
Note
For help with control-panel error messages while printing from a memory card, see Control
panel messages.
Missing or wrong files
Use the table in this section to solve problems with memory-card files.
ProblemCauseSolution
Device cannot detect files on
the memory card.The memory card might be
missing or inserted incorrectly.Verify that the memory card is
inserted correctly. See
Inserting a memory card.
The files might not be in the
correct format.To print from the device control
panel, the files must be in the
sRGB JPEG format. To print
other formats, you must use a
software program on your
computer.
You might have inserted more
than one memory card.Only one card slot can be
occupied for the device to
detect JPEG files. Verify that
only one card is inserted.
Index page not printing
Use the table in this section to solve problems with index-page printing.
ProblemCauseSolution
The index page will not print.The memory card might have
been removed before the
device could print the page.Reinsert the card and reprint
the index page.
You might have inserted more
than one memory card.Only one card slot can be
occupied for the device to
detect JPEG files. Verify that
only one card is inserted.
One or more print cartridges
might be low.Replace any low print
cartridges. See 
Changing a
print cartridge.
Proof sheet not printing
Use the table in this section to solve problems with proof-sheet printing.
264Chapter 14 Troubleshooting ENWW