Symptom Tables - Lexmark T520 Service Manual

Infoprint 1120 and 1125

Symptom Tables

Symptom Table - Base Printer
Symptom
Dead Machine
Operator Panel - One or more
buttons do not work.
Operator Panel - Display is blank.
Printer sounds 5 beeps.
Operator Panel - Display is blank.
Printer does not sound 5 beeps.
Operator Panel continuously
displays all diamonds, sounds 5
beeps and does not complete
POST.
Paper feed problems - Base
printer or Integrated 500 Paper
Tray
Paper jams at exit of Redrive
Assembly - No Duplex Unit
installed.
Paper jams at exit of Redrive
Assembly - Duplex Unit installed.
Fuser Solenoid fails to operate.
Print quality - Black page
Print quality - Blank page
Print quality - Light print
Print quality - Background
Print quality - Residual image
2-36
Service Manual
Action
Go to the "Dead Machine Service
Check" on page 2-43.
Go to the "Operator Panel Buttons
Service Check" on page
Go to the "Operator Panel Service
Check" on page 2-79.
Replace the operator panel
assembly.
Go to the "Operator Panel Service
Check" on page 2-79.
Go to the "Paper Feed Service
Check" on page 2-84.
Go to the "Paper Feed Service
Check" on page 2-84.
Go to the "Duplex Unit Service
Check" on page 2-45.
Go to the "Fuser Solenoid Service
Check" on page 2-60.
Go to the "Print Quality - All Black
Page" on page 2-89.
Go to the "Print Quality - Blank
Page" on page 2-90.
Go to the "Print Quality - Light Print"
on page 2-98.
Go to the "Print Quality -
Background" on page
Go to the "Print Quality - Residual
Image" on page 2-98.
2-79.
2-94.