Oki ML490 Maintenance Manual - Page 89

5.2 Lubrication This printer is designed to be maintenance free and requires no lubrication during normal operation. However it is necessary to apply lubricant in case the printer is disassembled, reassembled, cleaned or parts have been changed. (1) Cleaning time Remarks: 1) Turn off the power before cleaning. 2) Make sure that paper dust will not fall inside of the machine. • Cleaning period: 6 months of operation or 300 hours of operation, whichever the earlier. • Cleaning points: Carriage shaft and surroundings: Remove paper and ribbon dust. Paper path: Clean stains and dusts. Paper End Sensor Remove the dust on the Sensor. (2) Lubricant • Pan motor oil (or equivalent): PM • Molicort (or equivalent): EM-30L (3) Amount of lubricant • Medium amount A : Apply three to four drops of oil, or 0.008 inch (0.2 mm) thick grease. • Small amount B : Apply one drop of oil (0.006±0.002 g) (4) Areas to Avoid No. Do not lubricate 1 Platen assembly (rubber face) 2 Pressure roller (rubber face) 3 Carriage shaft 4 Ink ribbon image 5 Pin tractor 6 Flexible cable and crack 7 Motor PCB 8 Connector terminals Reason To prevent stained paper and illegal paper feed. To prevent stained paper To stabilize carriage traveling load To prevent blurring of print Remarks Pay attention not to put the grease on the rubber face of the pressure roller. To prevent stained paper To prevent loose connection To prevent loose connection To prevent loose connection 42114101 Rev.1 89 /