Diagnostic information 2-23
4506-1xx
Printer symptom table
Symptom Action
Dead machine (no power). See “Dead machine service check” on page 2-25.
Fan noisy or not working. Unplug the fan at CN404 on the LVPS/HVPS. Turn the printer on and
verify +24 V dc on pin 1. If the voltage is not correct, replace the LVPS/
HVPS. If it is correct, the most likely failure is the fan. Contact the next
level of support.
Fuser parts melted. See “Hot fuser service check” on page 2-27.
Fuser lamp does not light. See “Fuser service check” on page 2-26.
Fuser lamp never turns off. See “Hot fuser service check” on page 2-27.
Toner is not fused to the paper. See “Fuser service check” on page 2-26.
Paper jams. See “Paper feed service checks” on page 2-29.
Main motor is noisy or not moving. See “Main motor service check” on page 2-28.
Paper skews. See “Paper feed service checks” on page 2-29.
Operator panel button is not responding. See “Controller card service check” on page 2-24.
Operator panel lights are off or very dim. See “Controller card service check” on page 2-24.
Blank page See “Blank page” on page 2-32.
Black page See “Black page” on page 2-33.
Heavy background See “Heavy background” on page 2-33.
Light print See “Light print” on page 2-35.
White or black lines or bands See “White or black lines or bands” on page 2-35.
Toner on back of page See “Toner on back of page” on page 2-36.
Paper never picks. See “Paper never picks” on page 2-30.
Paper feeds continuously. See “Paper picks during POST and/or continuously” on page 2-29.
Paper is wrinkled or bent. See “Paper “trees,” wrinkles, stacks poorly, or curls” on page 2-31.
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