Lenovo ThinkStation C30 Hardware Maintenance Manual - ThinkStation C30 - Page 11

Voltage-selection switch, Safety inspection guide, If any unsafe conditions are present - series

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Voltage-selection switch Some computers are equipped with a voltage-selection switch located near the power-cord connection point on the computer and some computers do not have a voltage-selection switch. Before you install your computer or relocate your computer to another country or region, you must be certain that you have matched your computer to the voltage available at your electrical outlet. CAUTION: You must know the voltage of the electrical connection (outlet) where your computer will be connected. If you do not know the voltage, contact your local electric company or refer to official Web sites or other literature for travelers to the country or region where you are located. If your computer has a voltage-selection switch, you must set the switch to match the voltage available at your electrical outlet. Setting the voltage-selection switch incorrectly will cause the computer to malfunction and might cause permanent damage to the computer. Do not connect the computer to an electrical outlet until you have verified that the voltage-selection switch setting matches the voltage available at the electrical outlets. If your computer does not have a voltage-selection switch, inspect the voltage-rating label on the bottom of the computer and note the following: • If the voltage-rating label shows a range of either "100-127 V" or "200-240 V," you must ensure that the voltage provided at the electrical outlet matches the voltage rating on the computer label. If it does not match, do not attempt to connect the computer to the electrical outlet, unless an external device such as a voltage-converting transformer is used. • If the voltage-rating label shows a dual range of "100-127 V" and "200-240 V," this signifies that the computer is suitable for worldwide operation and the computer will automatically adjust to the voltage at the electrical outlet regardless of the country or region where the computer is being connected. Safety inspection guide The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service personnel from injury. This guide addresses only those items. However, good judgment should be used to identify potential safety hazards due to attachment of features or options not covered by this inspection guide. If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem. Consider these conditions and the safety hazards they present: • Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock). • Explosive hazards, such as a damaged CRT face or bulging capacitor • Mechanical hazards, such as loose or missing hardware The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and the power cord disconnected. Checklist: 1. Check exterior covers for damage (loose, broken, or sharp edges). 2. Power-off the computer. Disconnect the power cord. Chapter 2. Safety information 5

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Voltage-selection switch
Some computers are equipped with a voltage-selection switch located near the power-cord connection
point on the computer and some computers do not have a voltage-selection switch. Before you install
your computer or relocate your computer to another country or region, you must be certain that you have
matched your computer to the voltage available at your electrical outlet.
CAUTION:
You must know the voltage of the electrical connection (outlet) where your computer will be
connected. If you do not know the voltage, contact your local electric company or refer to official
Web sites or other literature for travelers to the country or region where you are located.
If your computer has a voltage-selection switch, you must set the switch to match the voltage available at
your electrical outlet. Setting the voltage-selection switch incorrectly will cause the computer to malfunction
and might cause permanent damage to the computer. Do not connect the computer to an electrical
outlet until you have verified that the voltage-selection switch setting matches the voltage available at the
electrical outlets.
If your computer does not have a voltage-selection switch, inspect the voltage-rating label on the bottom of
the computer and note the following:
•
If the voltage-rating label shows a range of either “100-127 V” or “200-240 V,” you must ensure that the
voltage provided at the electrical outlet matches the voltage rating on the computer label. If it does
not match, do not attempt to connect the computer to the electrical outlet, unless an external device
such as a voltage-converting transformer is used.
•
If the voltage-rating label shows a dual range of “100-127 V” and “200-240 V,” this signifies that the
computer is suitable for worldwide operation and the computer will automatically adjust to the voltage at
the electrical outlet regardless of the country or region where the computer is being connected.
Safety inspection guide
The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these
products. Each machine, as it was designed and built, had required safety items installed to protect users
and service personnel from injury. This guide addresses only those items. However, good judgment should
be used to identify potential safety hazards due to attachment of features or options not covered by this
inspection guide.
If any unsafe conditions are present, you must determine how serious the apparent hazard could be and
whether you can continue without first correcting the problem.
Consider these conditions and the safety hazards they present:
•
Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal
electrical shock).
•
Explosive hazards, such as a damaged CRT face or bulging capacitor
•
Mechanical hazards, such as loose or missing hardware
The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and
the power cord disconnected.
Checklist:
1. Check exterior covers for damage (loose, broken, or sharp edges).
2. Power-off the computer. Disconnect the power cord.
Chapter 2
.
Safety information
5