Lenovo U260 manual Safety inspection guide

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Safety information

Safety inspection guide

The purpose of this inspection guide is to assist you in identifying potential unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service personnel from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards according to the attachment of non-Lenovo IdeaPad 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 a bulging capacitor

•• Mechanical hazards, such as loose or missing hardware

To determine whether there are any potential unsafe conditions, use the following checklist at the beginning of every service task. 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.Turn off the computer. Disconnect the power cord.

3.Check the power cord for:

a.A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0.1 ohm or less between the external ground pin and the frame ground.

b.The power cord should be the type specified in the parts list.

c.Insulation must not be frayed or worn.

4.Check for cracked or bulging batteries.

5.Remove the cover.

6.Check for any obvious non-Lenovo IdeaPad alterations. Use good judgment as to the safety of any non-Lenovo IdeaPad alterations.

7.Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

8.Check for worn, frayed, or pinched cables.

9.Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

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Contents IdeaPad U260 First Edition Aug Copyright Lenovo 2010. All rights reserved Contents About this manual Safety information General safety Electrical safety IdeaPad U260 Hardware Maintenance Manual Safety inspection guide Grounding requirements Safety notice Safety notices multilingual translationsIdeaPad U260 Hardware Maintenance Manual Safety information IdeaPad U260 Hardware Maintenance Manual Safety information IdeaPad U260 Hardware Maintenance Manual Safety information Laser compliance statement Safety information Strategy for replacing FRUs Important service informationImportant notice for replacing a system board Strategy for replacing a hard disk driveImportant information about replacing RoHS compliant FRUs General checkout What to do first Following are not covered under warrantyPower system checkout Checking the AC adapterChecking operational charging Checking the battery pack Restoring the factory contents by using OneKey Recovery Related service informationPasswords Power-on passwordSupervisor password Power management Screen blank modeSleep standby mode Hibernation mode Specifications SpecificationsIdeaPad U260 Hardware Maintenance Manual Status indicators Status indicatorsFlashing white Fn key combinations Fn key combinationsScrew notices FRU replacement noticesRemoving and replacing an FRU Removal steps of keyboard KeyboardRemoval steps of keyboard bezel Keyboard bezelIdeaPad U260 Hardware Maintenance Manual M1.98 × 3 mm, flat-head, nylok-coated White ~1.5 kgfcm M1.98 × 3 mm, flat-head, nylok-coated White Removal steps of battery pack Battery packRemoval steps of PCI Express Mini Card for wireless LAN PCI Express Mini Card for wireless LANWhen installing Removal steps of LCD unit LCD unitRemove the LCD unit in the direction shown by arrows Removal steps of hard disk drive Hard disk driveRemoval steps of Dimm DimmRemoval steps of fan assembly and heat sink assembly Fan assembly and Heat Sink assemblyWhen installing Removal steps of speakers SpeakersImportant notices for handling the system board System boardRemoval steps of system board Removal steps of base cover Base coverIdeaPad U260 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 × 3 mm, flat-head, nylok-coated Black ~1.5 kgfcm Removal steps of integrated camera Integrated cameraRemoval steps of antenna assembly and LCD cover Antenna assembly and LCD coverFront view LocationsBottom and Left-side view Right-side viewParts list Overall No. FRU FRU no Parts list-OverallNIUM1 Logic LOWER-BROWN AM0DZ000310 LCD FRUs 12.5-in. HD TFT Parts list-12.5-in. HD TFTParts list-Keyboard Miscellaneous parts Parts list-Miscellaneous partsAC adapters Parts list-3-pin AC adaptersParts list-3-pin power cords Power cords145000538 Lenovo IdeaPad U260 IdeaPad U260 Hardware Maintenance Manual APS Trademarks
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