Lenovo B6000, B8000 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 for 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 B6000 / B8000 Page Contents Lenovo B6000 Lenovo B8000 About this manualSafety information General safety Electrical safety Lenovo B6000/B8000 Hardware Maintenance Manual Safety inspection guide Grounding requirements Safety notice Safety notices multilingual translationsLenovo B6000/B8000 Hardware Maintenance Manual Safety information Lenovo B6000/B8000 Hardware Maintenance Manual Safety information Lenovo B6000/B8000 Hardware Maintenance Manual Safety information Laser compliance statement Safety information Strategy for replacing FRUs Before replacing partsImportant notice for replacing a system board Important service informationOriginal part Important information about replacing RoHS compliant FRUsGeneral checkout What to do first Following are not covered under warrantyAccurate information about the battery status Power system checkoutChecking the internal battery status Approximate information about the battery statusLenovo B6000/B8000 Hardware Maintenance Manual Security Power managementActivating/Deactivating the Display Feature Description SpecificationsLenovo B6000 / B8000 Logic card to plastic FRU replacement noticesScrew notices Plastic to plasticRemoving and replacing an FRU Peeling off the label on the rear cover Rear coverSeparating the rear cover using a suction tool Unlocking the central area of the rear cover Step Screw quantity Color Torque Screws on the holder of the speaker box Right speaker boxDisconnecting the speaker FPC Prying off the holder Removing the speaker box Hinge frame and pivot Disconnecting the main FPCRemoving the hinge frame with the main FPC at the left end Removing the hinge pivot Main camera Disconnecting the main camera FPCDetaching the main camera Screws fixing the left speaker box Left speaker boxScrews on the main antenna Main antennaPhillips flat-head, M1.4 × 1.5 Black N/A Screw on the WiFi antenna WiFi antennaWiFi antenna frame detached Important notices for handling PCB Main PcbaRemoving the conductive fiber Removing the USB FPC holder Disconnecting the FPC between the main Pcba and sub board Disconnecting the LCD FPC Removing the adhisive tapes Main Pcba removed 10 Unlock the main antenna FPC connector 12 Main antenna removed Screws on the sub board Sub boardDisconnecting the TP FPC Detaching the vibrator motor Pushing out the power button Power buttonFront view LocationsRear view Parts list Overall Lenovo B6000 / B8000 Parts list-Overall for Lenovo B6000 only Parts list-Overall for Lenovo B8000 only Screw Parts list-ScrewPage Trademarks