Oki ML520 - Manual (Page 164)

3.5.06 Areas Not Lubricated
Lubricant should never contact the parts listed below.
1. Ribbon
2. Platen Assembly (Rubber Face)
3. Pressure Roller (Rubber Face)
4. Tractor Pins
5. Head Cable
6. Space Motor Printed Circuit Board
7. Electrical Contacts and Connections
8. Space Rack
CAUTION
Do NOT lubricate the space rack. Lubricating the space rack will attract dust. If enough dust accumulates
on the space rack, printing problems will occur.
9. Teeth of the gears in the Gear Case Assembly
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