MINOLTA-QMS PagePro 4100 Series Service Manual page 8

• To reassemble the product, reverse the order of disassembly unless otherwise specified.
• While the product is energized, do not unplug or plug connectors into the circuit boards
or harnesses.
• The magnet roller generates a strong magnetic field, therefore it should not come in
close contact with a watch, floppy disk, magnetic card, or CRT tube.
• An air gun and vacuum cleaner generates a strong electrostatic charge that can destroy
the ATDC sensor and other sensors. Before cleaning a component with one of these
devices, be sure to remove all the sensors. Otherwise, use a blower brush and cloth
when cleaning parts.
• When handling circuit boards with MOS ICs, observe the "INSTRUCTIONS FOR
HANDLING THE PWBs WITH MOS ICs" (applicable only to the products using
MOS ICs).
• The PC Drum is a very delicate component. Observe the precautions given in "HAN-
DLING OF THE PC DRUM" because mishandling may result in serious image prob-
lems.
• Note that replacement of a circuit board may call for readjustments or resetting of
• particular items, or software installation.
• After completing a service job, perform a safety check. Make sure that all parts, wiring
and screws are returned to their original positions.
• Check the area surrounding the service site for any signs of damage, wear or need of
repair.
• Do not pull out the toner hopper while the toner bottle is turning. This could result in a
damaged hopper motor or locking mechanism.
• If the product is to be run with the front door open, make sure that the toner hopper is in
the locked position.
Other Precautions
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