1 December 1990
5.2 EXPLANATION OF REGULAR PM
ItemExplanation
Optics UnitMirrors, Lens,Stains on any part of the optics unit result in a dirty
Reflector, Exposurbackeground, black lines, or areas of decreased
Glass, Platen Coversharpness 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.
Exposure LampDeterioration of the exposure lamp affects the copy
image. Check the lamp at regular intervals and
replace if discolored.
Optical FiberA dirty optical fiber receptor can result in insufficient
image density. Clean at regular intervals.
Paper Feed, Paper Feed RollerThis, machine uses cassettes for paper feeding. If
RegistrationPick-up Roller,paper powder or dust adheres to the paper feed roller
Separation Rollerand rollers are worn out, paper may not feed correctly
and/or skewing may result. Cleaning or replacement
is required at regular intervals.
Registration RollerA dirty registration roller can cause paper to register
incorrectly, skew, or jam. Cleaning is required at
regular intervals.
TransportTransfer Guide Plate If the transfer guide plate is dirty, the back sides of the
copy may become dirty. Clean the plate at regular
intervals.
Around Drum Charge WiresDirty charge wires may cause uneven image density.
They should be cleaned or replaced at regular
intervals.
End BlocksToner tends to accumulate on the corona end blocks,
and this can result in poor copy quality or even a high
voltage leak. Clean end blocks at regular intervals.
QLIf toner accumulates on the QL, a dirty background or
a repeating negative image may result.
Clean the QL at regular intervals.
PTLIf paper dust or toner accumulates on the PTL, its
efficiency may be reduced. This can cause toner to
be reattracted to the drum during transfer, reducing
image density. Clean the PTL at regular intervals.
ID SensorIf paper dust or toner accumulates on the ID sensor,
the toner density cannot be controlled correctly. This
results in light copy or overtoning. Clean this sensor
at regular intervals.
Erase LampIf toner accumulates on the erase lamp, a dirty
background may occur that becomes progressively
worse in long copy runs. Clean this lamp at regular
intervals.
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ACEC
