Lexmark T620 Service Manual - Page 70
Symptom Tables, 5XX/7XX, Symptom Table - Base Printer
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4069-5XX/7XX Symptom Tables Symptom Table - Base Printer Symptom Cartridge Fan (722/72n) fails to run or is noisy Printhead Fan fails to run or is noisy (722/72n). 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 250 Paper Tray Paper jams at exit of Redrive Assembly - No Duplex Option installed. Paper jams at exit of Redrive Assembly - Duplex Option installed Fuser Solenoid fails to operate. Print quality - Black page Print quality - Blank page Action Go to the "Cartridge Fan Service Check" on page 2-64. Go to "Printhead Fan Service Check" on page 2-63. If the fan is noisy, replace the fan assembly. Go to the "Dead Machine Service Check" on page 2-50. Go to the "Operator Panel Buttons Service Check" on page 2-86. Go to the "Operator Panel Service Check" on page 2-86. Replace the operator panel assembly. Go to the "Operator Panel Service Check" on page 2-86. Go to the "Paper Feed Service Check" on page 2-105. Go to the "Paper Feed Service Check" on page 2-105. Go to the "Duplex Option Service Check" on page 2-53. Go to the "Fuser Solenoid Service Check" on page 2-68. Go to the "Print Quality - All Black Page" on page 2-110. Go to the "Print Quality - Blank Page" on page 2-110. 2-42 Service Manual