Lexmark X644E Service Manual - Page 48
Symptom tables, Printer symptoms
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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 Go to "Operator panel right cover assembly service check" panel buttons do not work 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)- Go to "LCD touchscreen contrast control service check- contrast does not change with contrast model X642e" on page 2-149. control 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 Go to "Operator panel Menu button service check-model on operator panel does not operate. 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 Go to "Paper feed service check-printer" on page 2-156. 500-sheet paper tray 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. Go to "Print quality-toner on backside of printed page" on (print quality) page 2-164. 2-10 Service Manual