Explanation Of Regular Pm - Ricoh Robin Service Manual

PREVENTIVE MAINTENANCE SCHEDULE

5.2 EXPLANATION OF REGULAR PM

Item
Optics Unit Mirrors, Lens,
Reflector, Exposure
Glass, Platen Cover
Exposure Lamp
Paper Feed, Feed Roller
and
Registration
Registration Roller
Transport Transfer Guide Plate If the transfer guide plate is dirty, the back side of
Around Charge Wires
Drum
End Blocks
QL
ID Sensor
Erase Lamp
Cleaning Cleaning Blade
Unit
Used Toner Tank
Explanation
Stains on any part of the optics unit result in a dirty
background, black lines, black spots, or areas of
decreased sharpness 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 affects the copy
image. Inspect the lamp at regular intervals and
replace if discolored.
If paper powder or dust adheres to the feed rollers
and/or rollers are worn out, 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 misfeed. Cleaning is required at
regular intervals.
copies may become dirty. Clean the plate at regular
intervals.
Dirty charge wires may cause uneven image density.
They should be cleaned or replaced at regular
intervals.
Toner 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.
If toner accumulates on the QL, a dirty background or
a repeating negative image may result.
Clean the QL at regular intervals.
If paper dust or toner accumulates on the ID sensor,
the toner density cannot be controlled correctly. This
results in light copy or overtorning. Clean this sensor
at regular intervals.
If 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.
A dirty or worn out cleaning blade will cause black
lines on copies and/or scratches on the drum. The
blade must be replaced or cleaned at regular intervals.
To avoid damaging the drum, dust with setting powder
evenly along the edge and surface of the blade after
replacement or cleaning.
If the used toner tank becomes full, "E70" lights and
copying becomes inhibited. To prevent unnecessary
EM calls, the used toner tank should be emptied at
every visit.
4-32
24 June 1994