Ricoh FT4460, Service Manual, Page: 208 / 413

28 February 1989
5.4 EXPLANATION OF REGULAR PM
Optics Unit
Paper Feed,
Registration
Item
Transport
Mirrors, Lens,
Reflector, Exposure
Glass, Platen Cover
Exposure Lamp
Optical Fiber
Paper Feed Roller,
Pick-up Roller,
Separation Roller
Registration Roller
Worm Gear
Worm Wheel
Transport Roller
Explanation
Stains on any part of the optics unit
result in a dirty background, black
lines, or areas of decreased sharp-
ness on the copy image. Periodic
cleaning is required. The exposure
glass and the platen cover must also
be cleaned. If stains on the platen
cover cannot be removed, it must be
replaced.
Deterioration of the exposure lamp af-
fects the copy image. Check the lamp
at regular intervals and replace if dis-
colored.
A dirty optical fiber receptor can result
in insufficient image density. Clean at
regular intervals.
This machine uses cassettes for paper
feeding. If paper powder or dust ad-
heres to the paper feed roller, paper
may not feed correctly and/or skewing
may result. Cleaning or replacement is
required at regular intervals.
A dirty registration roller can cause
paper to register incorrectly, skew, or
jam. Cleaning is required at regular in-
tervals.
If the worm gear or worm wheel
doesn’t turn smoothly, paper may not
feed correctly or skewing may result.
They must be lubricated at regular in-
tervals.
If the transport roller is dirty or if it
slips, the back sides of the copy may
become dirty. Clean the roller at
regular intervals.