Brother FAX-2840 Service Manual page 41

Others
(1) Condensation
When the ambient temperature of the machine varies from low to high during cold
seasons or due to the effect of air conditioning, condensation may occur inside the
machine, causing various problems as listed below.
• Condensation on the surface of optical devices such as the laser scanner windows,
lens, reflecting mirror, and protection glass may cause light print image.
• If the exposure drum is cold, the electrical resistance of the photosensitive layer is
increased, making it impossible to obtain the correct contrast when printing.
• Condensation on the charge unit may cause corona charge leakage.
• Condensation on the plate and separation pad may cause paper feed problems.
If condensation has occurred, leave the machine for at least two hours to allow it to reach
room temperature.
If the drum unit is unpacked soon after it is moved from a cold place to a warm room,
condensation may occur inside the drum unit which may cause incorrect images. Instruct
the user to allow the drum unit to come to room temperature before unpacking it. This will
take one or two hours.
(2) Low temperature
The motor may not drive normally under the low temperature environment. This is due to
there being too much load to drive each unit. In this case, increase the room
temperature.
Cleaning
Use a soft dry lint-free cloth.
WARNING
DO NOT use any flammable spray or flammable solvent such as alcohol, benzine,
or thinner to clean the machine. DO NOT use these articles near the machine.
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