Lenovo E49 Important service information, Strategy for replacing FRUs, Before replacing parts

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Chapter 2. Important service information

This chapter presents the following important service information that applies to all machine types supported by this manual:

“Strategy for replacing FRUs” on page 27

“Strategy for replacing a hard disk drive” on page 28

“Important notice for replacing a system board” on page 28

“Important information about replacing RoHS compliant FRUs” on page 28

Important: BIOS and device driver fixes are customer-installable. The BIOS and device drivers are available at http://www.lenovo.com/support.

Strategy for replacing FRUs

Before replacing parts:

Make sure that all software fixes, drivers, and BIOS downloads are installed before replacing any FRUs listed in this manual.

After a system board is replaced, ensure that the latest BIOS is installed to the system board before completing the service action.

To download software fixes, drivers, and BIOS, do the following:

1.Go to http://www.lenovo.com/support.

2.Click Download Drivers & Software. The Web site offers three options to begin your search:

Search by product number

Search through the product auto-detect function

Search by product category

3.Follow the directions on the screen and install the necessary software.

Notes: If you need to improve the computer performance, you also could download and install the latest BIOS utility from the Support Web site.

Do not try to update the BIOS settings for any computer unless you have been trained and certified. An untrained person runs the risk of damaging the computer.

Before installing the latest utility, make sure that the battery is fully charged and an ac power adapter is connected.

Do not turn off or put your computer into sleep or hibernation until the update has been completed. Otherwise, the system board might be damaged.

Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:

If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue.

Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one.

© Copyright Lenovo 2012

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Contents Lenovo E49 and ZhaoYang E49 Hardware Maintenance ManualSecond Edition May Copyright Lenovo Contents Ii Hardware Maintenance Manual About this manual Iv Hardware Maintenance Manual General safety Safety informationElectrical safety Safety inspection guide Grounding requirements Safety notices multilingual translationsSafety information Hardware Maintenance Manual Safety information Perigo Perigo Vorsicht Vorsicht Vorsicht Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Laser compliance statement multilingual translations Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Important service information Before replacing partsStrategy for replacing FRUs Important notice for replacing a system board Strategy for replacing a hard disk driveImportant information about replacing RoHS compliant FRUs For products shipped after JuneFollowing are not covered under warranty General checkoutWhat to do first Checking the ac power adapter Power system checkoutChecking operational charging Checking the battery packHardware Maintenance Manual Recovering the computer settings Related service informationPasswords Power-on passwordScreen blank mode Power managementSleep mode Hibernation modeRelated service information Hardware Maintenance Manual Specifications Indicator Meaning Status indicatorsKey combination Description Fn key combinationsHardware Maintenance Manual Screw notices FRU replacement noticesCRU statement for customers Plastic to plasticTorque driver General guidelines Removing and replacing a FRUOptical drive Battery packRemoval steps of optical drive Bottom slot cover Memory modulesRemoval steps of bottom slot cover Removal steps of memory modules Hard disk drive assemblyRemoval steps of hard disk drive assembly Removal steps of hard disk drive bracket PCI Express Mini Card for wireless LANRemoval steps of PCI Express Mini Card for wireless LAN Removal steps of thermal fan assembly Thermal fan assemblyHardware Maintenance Manual Microprocessor Removal steps of microprocessor KeyboardRemoval steps of keyboard Hardware Maintenance Manual Keyboard bezel Remove the screws That secure the keyboard bezel Removal steps of keyboard bezelPower board Backup battery Removal steps of power boardRemoval steps of backup battery Important notices for handling the system board System board assemblyLCD unit Removal steps of system board assemblyRemoval steps of LCD unit and hinge brackets When installing DC-in cable and base cover Removal steps of DC-in cable and base cover Applying labels to the base cover LCD front bezelRemoval steps of LCD front bezel Integrated camera LCD panel, LCD cable, and hingesRemoval steps of integrated camera Removal steps of LCD panel and LCD cable Removal steps of hinges Antenna assembly and LCD rear coverRemoval steps of antenna assembly and LCD rear cover Front view LocationsRear view Right-side viewLenovo E49 and ZhaoYang E49 bottom and left-side view Bottom and left-side viewHardware Maintenance Manual CRU statement for customers Parts listCRU OverallParts list CRU LSS MB DIS N13M-GE1 1G E49A WO/3G/BT LCD FRUsFRU Miscellaneous parts Ac power adaptersPower cords Parts list 3-pin power cords Longwell Parts list 3-pin power cords Volex Parts list 2-pin power cords Linetek Hardware Maintenance Manual Appendix A. Notices Trademarks Electronic emissions noticesPage Part Number 1P P/N