Minolta PagePro 1200 Series Service Manual page 60

PagePro 1200 Series Maintenance / Disassembly
(3) Instructions for Handling the PWBs with MOS ICs
The following precautions must be observed when handling circuit boards with MOS (Metal Oxide
Semiconductor) ICs.
• During transportation or when in storage, new circuit boards must not be indiscriminately
removed from their protective conductive bags.
• Do not store or place circuit boards in a location exposed to direct sunlight.
• When it becomes absolutely necessary to remove a board from its conductive bag or case, always
place it on its conductive mat in an area as free as possible from static electricity.
(4) During Replacement the PWBs with MOS ICs:
• Before unplugging connectors from the circuit boards, make sure that the power cord has been
unplugged from the power outlet.
• When removing a board from its conductive bag or case, do not touch the pins of the ICs or the
printed pattern. Place it in position by holding only the edges of the board.
• Before plugging connectors into the board, make sure that the power cord has been unplugged
from the power outlet.
(5) During Inspection the PWBs with MOS ICs:
• Avoid checking the IC directly with a multimeter; use connectors on the board.
• Never create a closed circuit across IC pins with a metal tool.
• Where it is absolutely necessary to touch the ICs and other electrical components on the board, be
sure to ground your body.
(6) During Transportation/Storage the Drum Cartridge:
• Use the specified carton whenever moving or storing the Imaging Cartridge.
• The storage temperature is in the range between -20°C and +40°C.
(7) Handling the Drum Cartridge:
• The PC Drum is extremely sensitive to light shock and takes long time to recover sensitivity.
Never open the protection cover or expose the PC Drum to direct sunlight for long periods of
time.
• Do not to contaminate the surface of the PC Drum with oil-base solvent, fingerprints, and other
foreign matter.
• Do not scratch the surface of the PC Drum.
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