General Cautions
D017/D018/D019/D020/D084/D085 4-3 SM
Replacement
and
Adjustment
4.2.3 SCANNER UNIT
Clean the exposure glass with alcohol or with glass cleaner to reduce the amount of
static electricity on the surface of the glass.
Use a blower brush or a cotton pad with water to clean the mirrors and lens.
Do not bend or crease the exposure lamp flat cable.
Do not disassemble the lens unit. Doing so will throw the lens and the copy image out of
focus.
Do not turn any of the CCD positioning screws. Doing so will throw the CCD out of
position.
4.2.4 LASER UNIT
Do not loosen the screws that secure the LD drive board to the laser diode casing.
Doing so will throw the LD unit out of adjustment.
Do not adjust the variable resistors on the LD unit, as they are adjusted in the factory.
The polygon mirror and F-theta mirror are very sensitive to dust.
Do not touch the glass surface of the polygon mirror motor unit with bare hands.
4.2.5 FUSING UNIT
After installing the fusing thermistor, make sure that it is in contact with the hot roller and
that the hot roller can rotate freely.
Be careful not to damage the edges of the hot roller strippers or their tension springs.
Do not touch the fusing lamp and rollers with bare hands.
Make sure that the fusing lamp is positioned correctly and that it does not touch the
inner surface of the hot roller.
4.2.6 PAPER FEED
Do not touch the surface of the paper feed roller.
To avoid paper misfeeds, the side fences and end fences of the paper tray must be
positioned correctly to align with the actual paper size.
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