HP laserjet 3390, 3392 all-in-one サービスマニュアル

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Problem
Cause
Solution
The all-in-one is not answering incoming
fax calls.
A voice-messaging service might be
interfering with the all-in-one 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 all-in-one answer mode to
Manual. In manual mode, you must
start the fax-receive process
yourself.
Leave the all-in-one set to
automatic mode and lower the
rings-to-answer setting for the all-
in-one to a number less than the
rings-to-answer setting for the voice
mail. The all-in-one will answer all
incoming calls.
The all-in-one might be out of paper and
the memory is full.
Refill the media input tray. Press 
. The
all-in-one 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.
Faxes are printing on two pages instead
of one.
The auto reduction setting might not be
set correctly.
Turn on the auto reduction setting.
The incoming faxes might have been
sent on larger media.
Adjust the auto reduction setting to allow
larger pages to be printed on one page.
Received faxes are too light or are
printing only on half of the page.
The all-in-one ran out of toner while
printing a fax.
The all-in-one 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.
The fax that was sent was too light.
Contact the sender and have the sender
resend the fax after altering the settings.
ENWW
Fax troubleshooting
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