Service manual

1.5 ERASE LAMP
1. A narrower lead edge erase margin increases the possibility of
fusing jams. The margin should be at least 1.0 mm.
2. After cleaning the erase lamp unit, rub it lightly with your finger to
discharge any static electricity on the unit surface.
3. Make sure that the erase lamp setting (SP84) is correct.
Otherwise, ID sensor abnormal condition will occur.
1.6 DEVELOPMENT UNIT
1. Be careful not to nick or scratch the development roller sleeve.
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. Be careful not to bend the bias terminals.
4. Clean the drive gears after removing the used developer.
5. Never load different types of developer or toner (black and color)
into the development unit. Doing so will cause poor copy image
and toner scattering inside the copier.
6. Developer initialization is necessary when new developer is
loaded.
a) Black developer initialize (SP65)
b) Color developer initialize (SP10)
7. Adjust the black development bias voltage (SP37) together with
the exposure lamp voltage (SP48) if necessary. This should be
done only when the drum initial setting (SP66) is performed. The
results of adjusting the black bias voltage with the used drum will
be compensated by the exposure lamp voltage when the VL
pattern detections are performed. The color development bias
voltage (SP79) can be adjusted any time.
8. The doctor gaps must not be adjusted in the field as they are
strictly adjusted at the factory.
FT5733/5433 4-4 FSM