Casio DT-X5M10E, Service Manual, Page: 9 / 76

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Maintenance Precautions
The following precautions are a reminder. To avoid personal injury or damage to the terminal while performing
a removal and/or replacement job, take the following precautions:
1. Don't drop it. Perform your repairs on a stable surface. If the terminal falls, the case and other components
could be damaged.
2. Don't overheat it. Note the proximity of any heating elements. Keep the terminal out of direct sunlight.
3. Avoid interference. Note the proximity of any high capacity transformers, electric motors, and other strong
magnetic fields. These can hinder proper performance and damage components and/or data. You should also
monitor the position of magnetized tools (i.e. screwdrivers).
4. Keep it dry. This is an electrical appliance. If water or any other liquid gets into it, the Handheld Terminal could
be badly damaged.
5. Be careful with power. Avoid accidental shocks, discharges or explosions.
• Before removing or servicing any part from the terminal, turn the terminal off and detach any power supplies.
• When you want to unplug any cable/wire, be sure to disconnect it by the plug head. Do not pull on the wire.
6. Peripherals – Turn off and detach any peripherals.
7. Beware of static discharge. ICs, such as the CPU and main support chips, are vulnerable to static electricity.
Before handling any part in the terminal, discharge any static electricity inside the terminal. When handling a
printed circuit board, do not use gloves or other materials which allow static electricity buildup. We suggest that
you use an antistatic wrist strap instead.
8. Beware of corrosion. As you perform your job, avoid touching any connector leads.
Even the cleanest hands produce oils which can attract corrosive elements.
9. Keep your work environment clean. Tobacco smoke, dust or other air-born particulate matter is often
attracted to charged surfaces, reducing performance.
10. Keep track of the components. When removing or replacing any part, be careful not to leave small parts,
such as screws, loose inside the terminal.
Cleaning
Do not apply cleaner directly to the terminal, use a soft clean cloth.
Do not use volatile (petroleum distillates) or abrasive cleaners on any part of the terminal.