Lexmark 7003-050 X340n, Руководство по обслуживанию

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2-2
Service Manual
7003-XXX
Symptom tables
POST symptom table
These symptoms may appear during the POST (Power-on Self Test). See “Power–On Reset (POR)
sequence” on page 2-1 for the sequence when the MFP is turned on.
POST symptom table
MFP symptom table
Symptom Action
The main motor, cooling fan, and
fuser do not come on. See “Controller card service check” on page 2-21 .
POST completes except lights do
not come on. See “Operator panel service check” on page 2-27 .
POST complete except display
does not function. See “Operator panel service check” on page 2-27 .
Main motor does not come on. See “Main motor service check” on page 2-25 .
Black boxes appear on the
display, and the MFP fails to
function Turn off the MFP, wait ten seconds, and restart the MFP.
Fan does not come on. See “Cooling fan service check” on page 2-20 .
Fuser lamp does not come on. See “Cold fuser service check” on page 2-20 .
Fuser lamp never turns off. See “Hot fuser service check” on page 2-24 .
The paper feed picks and tries to
feed paper. See “Paper feed service checks” on page 2-29 .
CCD Lamp fails to illuminate. See “CCD service check” on page 2-20 .
False Scanner Lock
displayed.
Check to see if the scanner is locked. Unlock the scanner if it is
locked.
If the scanner was unlocked, see “CCD service check” on
page 2-20 .
Symptom Action
Front access cover will not close See “Cover interlock switch service check” on page 2-22 .
Fuser parts melted See “Hot fuser service check” on page 2-24 .
Toner not fused to the paper See “Poor fusing of image” on page 2-32 .
Blank page See “Blank page” on page 2-31 .
Black page See “Black page” on page 2-31 .
Heavy background See “Heavy background” on page 2-32 .
Light print See “Light print” on page 2-33 .
White or black lines or bands See “White or black lines or bands” on page 2-33 .