Chapter
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d.
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3-3
3.2.3 Inspecting the Rack Outside View
Put the rack vertically on the solid ground. The rack should be erected upright without
tilting. Visually there is no dent, bump, scratches, peel, bubbling, stains or other similar
damaged signs. The captive screws should not be loose, missing or misplaced. The
installation slots for plug-in shelves are intact and the slot guide rails are not missing,
damaged or broken. All fittings and accessories required for rack installation are
complete. The labels of installation slots are intact and eligible. The busbar, the exhaust
fan and the installation positions are not damaged or deformed. There is no rack
surface paint flake-off or scratches.
3.3 Unpacking the Carton
3.3.1 Carton
Caution:
1. Avoid taking any circuit board out of the antistatic bags during the unpacking and
acceptance. Do not open the antistatic bags until the board is to be mounted into the
rack. In addition, avoid damaging any antistatic bag and keep it for future use when
storing spare boards and packing the faulty boards for repair.
2. When the equipment is moved from a colder and drier place to a hotter and
damper place, wait for 30 minutes before unpacking the equipment. Otherwise,
moisture may appear on the surface of the equipment and cause damage.
3. Properly recycle the desiccants lest children may eat them by accident. Cartons are
generally used to pack circuit boards and terminal equipment.
The circuit boards are placed in the anti-static protective bags during transportation.
Before unpacking the boards, take proper anti-static protective measures to avoid
damages. In addition, attention should be paid to the ambient temperature. Usually
some desiccant is placed in the anti-static protective bag to absorb moisture and keep
the bag dry.
The packing box of a module is shown in Fig. 3.3-1.
