Lexmark X734DE - Symptom Tables; Multiple Function Printer (MFP) Symptom Table; Print Quality Symptom Table

2-6 Service Manual
7526
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Symptom tables
Multiple function printer (MFP) symptom table
Print quality symptom table
Symptom Action
Close Front Door does not
appear when door is open
Go to “920.26—POST service check” on page 2-127.
Dead printer Go to “Dead printer service check” on page 2-144.
Front door locks and will not
open.
Go to “Front cover locked in place” on page 3-49.
Operator panel—one or
more buttons do not work.
Go to “One or more operator panel buttons fail” on page 2-149.
Operator panel—does not
respond to touch
Check display connection. See the installation note on page 4-29.
Operator panel—display is
blank. Printer sounds five
beeps.
Go to “Operator panel display blank, five beeps, and LED is off” on
page 2-150.
Operator panel—display is
blank.
Go to “Operator panel display blank, five beeps, and LED is off” on
page 2-150.
Operator panel continuously
displays all diamonds and
does not complete POST.
Go to “Operator panel display blank, five beeps, and LED is off” on
page 2-150.
Paper pick assembly—arm
hangs down, and tray
cannot be opened
Order PN 40X6319, and replace the broken plastic spring hook.
Scanner lid does not close
completely, will not stay
open, or makes noise when
opening and closing.
Go to “ADF hinge (left and right) removal” on page 4-256.
Top access cover does not
open.
The top access cover spring or springs may be broken. Go to “If the cover
won’t open” on page 4-179. Replace the top access cover spring(s).
Symptom Action
Background Go to “Print quality—background” on page 2-152.
Blank page Go to “Print quality—blank page” on page 2-153.
Blurred or fuzzy print Go to “Print quality—blurred or fuzzy print” on page 2-154.
Half-color page Go to “Print quality—half-color page” on page 2-154.
Horizontal banding Go to “Print quality—horizontal banding” on page 2-154.
Horizontal line Go to “Print quality—horizontal line” on page 2-155.
Insufficient fusing Go to “Print quality—insufficient fusing” on page 2-155.
Missing image at edge Go to “Print quality—missing image at edge” on page 2-155.
Mottle (2–5mm speckles) Go to “Print quality—mottle (2–5mm speckles)” on
page 2-155.
Narrow vertical line Go to “Print quality—narrow vertical line” on page 2-155.
Random marks Go to “Print quality—random marks” on page 2-155.
Residual image Go to “Print quality—residual image” on page 2-156.
Solid color page Go to “Print quality—solid color page” on page 2-156.