Ricoh Aficio FT4027, Service Manual

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1.6 DEVELOPMENT UNIT
1. Be careful not to nick or scratch the development roller sleeves.
2. Place the development unit on a sheet of paper after removing it from the
copier. This prevents any small metal objects (staples, clips, E-rings, etc.)
from being attracted to the development roller and getting inside the unit.
3. Clean the drive gears after removing the used developer.
4. Never load different types of developer or toner into the development unit.
Doing so will cause poor copy quality and toner scattering inside the copier.
5. TD sensor initial setting (SP2-214) is necessary when new developer is
loaded.
Do not perform the TD sensor initial setting with used developer.
Do not make any copy before TD sensor initial setting.
6. When removing the development unit, push it to the right to prevent the OPC
drum from being scratched by part of the development unit.
7. The doctor gap and the development roller position must not be adjusted in
the field as they are precisely adjusted at the factory using special tools. Do
not loosen any screws except for those needed when removing the toner
supply unit.
8. Before pulling out the development unit, disconnect the connector and
release the development unit lock lever.
9. When putting the development unit back in the copier, do not forget to
reconnect the connector.
1.7 TRANSFER BELT UNIT
1. Do not touch the transfer belt with bare hands.
2. When servicing the transfer belt cleaning unit, be careful not to damage the
edge of the cleaning blade.
3. Apply setting powder to the transfer belt when installing a new transfer belt
cleaning blade.
4. Dispose of the used toner inside the collection tank at every preventive
maintenance. Never use the toner in the used toner collection tank for toner
recycling.
5. Do not bend the bias terminal at the rear side of the transfer belt unit. A bent
terminal may cause a bad contact for the transfer charge circuit.
FT5535/4527/4522 4-4 FSM