Lubrication - Oki ML420 Maintenance Manual

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:
Paper path:
Paper End 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
(4) Areas to Avoid
No.
1 Platen assembly
(rubber face)
2 Pressure roller (rubber
face)
3 Carriage shaft
4 Ink ribbon
5 Pin tractor
6 Flexible cable
and crack
7 Motor PCB
8 Connector terminals
42113901TH01 Rev.3
: Apply one drop of oil (0.006±0.002 g)
Do not lubricate
To prevent stained paper
and illegal paper feed.
To prevent stained paper
To stabilize carriage
traveling load
To prevent blurring of print
image
To prevent stained paper
To prevent loose connection
To prevent loose connection
To prevent loose connection
Remove paper and ribbon dust.
Clean stains and dusts.
Remove the dust on the Sensor.
Reason
Pay attention not to put
the grease on the rubber
face of the pressure roller.
Oki Data CONFIDENTIAL
Remarks
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