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4 Replacement Procedures
Satellite A80 /A85 Series Maintenance Manual
[CONFIDENTIAL]
4-3
Safety Precautions
Before you begin disassembly, read the following safety precautions and observe them carefully
as you work.
DANGER:
1. Always use the lithium ion battery pack or backup battery that is authorized by
Toshiba or compatible with the unit. Since other battery packs have different
specifications, they may be incompatible with the unit, and may burst or explode.
Heating or disassembling the battery pack could cause leakage of alkaline solution.
Throwing the battery pack into a fire could cause the battery pack to explode.
2. The power supply, FL inverter and other components carry high voltages. To avoid
the risk of electric shock when you need to turn on the power of a partially
disassembled computer to check its operation, be very careful not to touch
connectors or components. Also, do not disassemble individual components in first-
level maintenance.
WARNING: To avoid the risk of electric shock or other injury:
1. Always turn the power off and disconnect the AC adaptor from the power source.
2. Remove any metal jewelry or accessories such as necklaces, bracelets, or rings.
Batteries in the computer retain an electrical charge so there is danger of electrical
shock even when the computer is disconnected from an AC power source.
3. Never work with wet or damp hands.
4. The computer contains sharp edges and corners: be careful not to injure yourself.
5. Make sure that all replacement components meet the specifications for the computer
and that all cables and connectors are securely fastened.
CAUTION: To avoid damage to the computer:
1. When you change a component, be sure the replacement component meets the required
specifications. Never use foreign parts.
2. Metal objects such as screws or paper clips which fall into the unit can cause a short-
circuit, fire, or other internal damage.
3. When assembling the computer, make sure you use the correct screws to secure the
various pieces in place. Screw sizes are listed in their corresponding figure. Make sure
all screws are securely fastened. Loose screws can cause short circuits, resulting in
heat, smoke, or fire.
4. Before removing an FRU or other component, make sure all cables to the component
have been disconnected.
5. If you use AC power, be sure to use the cable that came with the computer or one
recommended by Toshiba.