Lenovo V570, B570 manual Electrical safety

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Safety information

Electrical safety

Observe the following rules when working on electrical equipments.

Important:

Use only approved tools and test equipments. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents.

Many customers have rubber floor mats near their machines that contain small conductive fibers to decrease electrostatic discharges. Do not use such kind of mat to protect yourself from electrical shock.

Find the room emergency power-off (EPO) switch, disconnecting the switch or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly.

Do not work alone under hazardous conditions or near the equipment that has hazardous voltages.

Disconnect all power before:

Performing a mechanical inspection

Working near power supplies

Removing or installing main units

Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to power-off the wall box that supplies power to the machine, and to lock the wall box in the off position.

If you need to work on a machine that has exposed electrical circuits, observe the following precautions:

Ensure that another person, familiar with the power-off controls, is near you.

Attention: Another person must be there to switch off the power, if necessary.

Use only one hand when working with powered-on electrical equipment; keep the other hand in your pocket or behind your back.

Attention: An electrical shock can occur only when there is a complete circuit. By observing the above rule, you may prevent a current from passing through your body.

When using testers, set the controls correctly and use the approved probe leads and accessories for that tester.

Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as metal floor strips and machine frames.

Observe the special safety precautions when you work with very high voltages; instructions for these precautions are in the safety sections of maintenance information. Be extremely careful when you measure the high voltages.

Regularly inspect and maintain your electrical hand tools for safe operational condition.

Do not use worn or broken tools and testers.

Never assume that power has been disconnected from a circuit. First, check it to make sure that it has been powered off.

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Contents Lenovo V570/B570 Page Contents Lenovo V570/B570 About this manualSafety information General safety Electrical safety Lenovo V570/B570 Hardware Maintenance Manual Safety inspection guide Grounding requirements Safety notice Safety notices multilingual translationsLenovo V570/B570 Hardware Maintenance Manual Safety information Lenovo V570/B570 Hardware Maintenance Manual Safety information Lenovo V570/B570 Hardware Maintenance Manual Safety information Laser compliance statement Safety information Strategy for replacing FRUs Before replacing partsImportant notice for replacing a system board Strategy for replacing a hard disk driveOriginal part Important information about replacing RoHS compliant FRUsGeneral checkout What to do first Following are not covered under warrantyChecking the AC adapter Power system checkoutChecking operational charging Checking the battery pack Restoring the factory contents by using OneKey Recovery Related service informationPower-on password PasswordsSupervisor password Screen blank mode Power managementSleep standby mode Hibernation mode Feature Description SpecificationsWlan Status indicators Flashing white Indicator MeaningBlinking white OffKey combination Description Fn key combinationsLogic card to plastic FRU replacement noticesScrew notices Plastic to plasticRemoving and replacing an FRU Removal steps of battery pack Battery packRemoval steps of dummy cards Dummy cardStep Screw quantity Color Torque Removal steps of hard disk drive Hard disk driveRemoval steps of optical drive Optical driveRemoval steps of Dimm DimmRemoval steps of PCI Express Mini Card for wireless LAN/WAN PCI Express Mini Card for wireless LAN/WANWhen installing Removal steps of keyboard KeyboardLenovo V570/B570 Lenovo V570/B570 Hardware Maintenance Manual Removal steps of keyboard bezel Keyboard bezelRemove the screw c Lenovo V570/B570 M2 × 3.5 mm, flat-head, nylok-coated Black Kgfcm Important notices for handling the system board System boardRemoval steps of system board Lenovo V570/B570 Removal steps of LCD unit LCD unitRemove the LCD unit in the direction shown by arrows c Removal steps of fan assembly and heat sink assembly Fan assembly and Heat Sink assemblyLenovo V570/B570 Removal steps of CPU 1130 CPUBase cover, speakers and bluetooth card Lenovo V570/B570 Hardware Maintenance Manual Removal steps of LCD front bezel LCD front bezelRemoval steps of LCD panel, LCD cable and hinges LCD panel, LCD cable and hingesM2 × 2.5, flat-head, nylokcoated Black Kgfcm Lenovo V570/B570 Hardware Maintenance Manual Removal steps of integrated camera Integrated cameraRemoval steps of antenna assembly and LCD cover Antenna assembly and LCD coverFront view LocationsRight-side view Bottom and Left-side view Parts list Overall Parts list-Overall Pcie NB HMC LA57 Lower Case UMA W/SPEAKER&DC-IN TBD LCD FRUs 15.6-in. HD TFT Keyboard Lenovo V570/B570 Miscellaneous parts Parts list-Miscellaneous partsAC adapters Parts list-3-pin AC adaptersParts list-3-pin power cords Power cordsLongwell LP-46+H03VV-F+LS-18 1m Israel Lenovo V570/B570 Hardware Maintenance Manual Page Trademarks