Lexmark X642e - Symptom Tables; Printer Symptoms

2-10 Service Manual
7002-xxx
Symptom tables
Printer symptoms
Symptom Action
Dead machine Go to “Dead machine service check” on page 2-125.
Touchscreen panel blank, LED is on Go to “LCD touchscreen display service check—models
X644e/X646e” on page 2-149.
Touchscreen all white Go to “LCD touchscreen display service check—models
X644e/X646e” on page 2-149
Touchscreen panel blank, LED off, operator
panel buttons do not work
Go to “Operator panel right cover assembly service check”
on page 2-154.
LCD touchscreen icon buttons do not work Go to “LCD touchscreen display service check—models
X644e/X646e” on page 2-149.
LCD touchscreen (mono—model X642e)—
contrast does not change with contrast
control
Go to “LCD touchscreen contrast control service check—
model X642e” on page 2-149.
LCD touchscreen (color—models X644e/
X646e)—unable to change LCD
touchscreen backlight
Go to “LCD touchscreen backlight—models X644e/X646e”
on page 2-151
LCD (mono—model X642e)—Home and
Help buttons on operator panel do not
operate.
Go to “Operator panel Help and Home buttons service
check—model X642e” on page 2-154.
LCD (mono—model X642e)—Menu button
on operator panel does not operate.
Go to “Operator panel Menu button service check—model
X642e” on page 2-154.
Operator panel—none of the buttons work. Replace the operator panel right cover assembly. See
“Operator panel right cover assembly removal” on
page 4-64.
Operator panel—one button does not work Replace the operator panel right cover assembly. See
“Operator panel right cover assembly removal” on
page 4-64.
Operator panel LED does not come on
while MFP operates normally
Go to “Operator panel right cover assembly service check”
on page 2-154.
Paper feed problems—printer or integrated
500-sheet paper tray
Go to “Paper feed service check—printer” on page 2-156.
Paper jams at exit of redrive assembly—
duplex option not installed.
Go to “Paper feed service check—printer” on page 2-156.
Paper jams at exit of redrive assembly—
duplex option installed.
Go to “Duplex option service check” on page 2-127.
Fuser solenoid fails to operate. Go to “Fuser solenoid service check” on page 2-140.
Printer—black page (print quality) Go to “Print quality—all black page” on page 2-160.
Printer—blank page (print quality) Go to “Print quality—blank page” on page 2-161.
Printer—light print (print quality) Go to “Print quality—light print” on page 2-164.
Printer—background (print quality) Go to “Print quality—background” on page 2-162.
Printer—residual image (print quality) Go to “Print quality—residual image” on page 2-163.
Printer—skew (print quality) Go to “Paper feed service check—printer” on page 2-156.
Printer—banding (print quality) Go to
“Print quality—banding” on page 2-163.
Printer—random marks (print quality) Go to “Print quality—random marks” on page 2-161.
Printer—toner on backside of printed page.
(print quality)
Go to “Print quality—toner on backside of printed page” on
page 2-164.