Lexmark T620 Service Manual - Page 112

4069-5XX/7XX Excessive Noise or Vibration FRU 1 DC Motor Assembly 2 Idler Pulley DC Motor Assembly 3 Drive Pulley 4 Motor Drive Belt Tray Drive Belt Action Check to make sure all the motor plate mounting screws are tight. Check to make sure the idler pulley is not binding on the pulley shaft. Check the pulley for any signs of wear. Check the idler pulley shaft on the motor mounting plate for any signs of damage or contamination. Check the drive pulley for any signs of wear, binds or damage to the pulley or pulley shaft. Make sure the pulley turns freely on the pulley shaft. Check the DC motor drive belt for any signs of damage. Check to make sure the belt is tracking correctly on the drive pulley, idler pulley and motor pulley. Check the tray drive belt for any signs of damage. Check to make sure the belt is tracking correctly on the lower section of the drive pulley and lead screw pulleys. 2-84 Service Manual