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Har dwar e Maint enance Manual
L enovo E49 and ZhaoY ang E49
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Not e: Befor e using this information and the pr oduct it suppor ts, be sur e t o r ead the gener al information under Appendix A “Notices” on page 89 . Second Edition (May 2012) © Copyright L enovo 2012. LIMITED AND RES TRIC TED RIGHT S NO TICE: If data or softwar e is deliver ed pursuant a Gener al Ser vices Administr ation “GSA ” contr act, use, r epr oduction, or disclosur e is subject t o r estrictions set for th in Contr act No. GS-35F-05925.
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Contents About this manual . . . . . . . . . . . iii Chapt er 6. FRU r eplacement notices . . . . . . . . . . . . . . . . 41 Chapt er 1. Safety information . . . . . 1 Scr ew notices . . . . . . . . . . . . . . . 41 Gener al safety . . . . . . . . . . . . . . . 1 Electrical safety . . . . . . . . . . . . . . 2 Chapt er 7. Removing and r eplacing a FRU . . . . . . . . . . . . . . . . . . 43 Safety inspection guide . . . . . . . . . . . 3 Gener al guidelines . . . . . . . . . . . . . 43 Handling d
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ii Har dwar e Maint enance Manual
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About this manual ® This manual pr ovides ser vice and r efer ence information for the following L enovo pr oducts. Machine Machine type (MT) L enovo E49 3464 ZhaoY ang E49 20161, 20162, 20178 Use this manual t o tr oubleshoot pr oblems. The manual is divided int o the following sections: • The common sections pr ovide gener al information, guidelines, and safety information r equir ed for ser vicing comput ers. • The pr oduct-specific sections include ser vice, r efer ence, and pr oduct-specifi
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iv Har dwar e Maint enance Manual
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Chapt er 1. Safety information This chapt er pr esents following safety information that you need t o be familiar with befor e you ser vice a L enovo Not ebook. • “Gener al safety” on page 1 • “Electrical safety” on page 2 • “Safety inspection guide” on page 3 • “Handling devices that ar e sensitive t o electr ostatic dischar ge” on page 3 • “Gr ounding r equir ements” on page 4 • “Safety notices (multilingual tr anslations)” on page 4 • “Laser compliance stat ement (multilingual tr anslations)”
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Electrical safety Obser ve the following rules when working on electrical equipment. Impor tant: Use only appr oved t ools and t est equipment. Some hand t ools have handles cover ed with a soft mat erial that does not insulat e you when working with live electrical curr ents. Many cust omers have, near their equipment, rubber floor mats that contain small conductive fibers t o decr ease electr ostatic dischar ges. Do not use this type of mat t o pr ot ect yourself fr om electrical shock. • Find
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– Use caution; do not become a victim yourself. – Switch off power . – Send another person t o get medical aid. Safety inspection guide The purpose of this inspection guide is t o assist you in identifying pot entially unsafe conditions. As each machine was designed and built, r equir ed safety it ems wer e installed t o pr ot ect users and ser vice t echnicians fr om injur y . This guide addr esses only those it ems. Y ou should use good judgment t o identify pot ential safety hazar ds due t o
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2. Mak e sur e that the ESD pr ot ective devices you use have been cer tified (ISO 9000) as fully effective. When handling ESD-sensitive par ts: • K eep the par ts in pr ot ective packages until they ar e inser t ed int o the pr oduct. • A void contact with other people. • W ear a gr ounded wrist str ap against your skin t o eliminat e static on your body . • P r event the par t fr om t ouching your clothing. Most clothing is insulative and r etains a char ge even when you ar e wearing a wrist s
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D ANGER D ANGER D ANGER D ANGER D ANGER Chapt er 1 . Safety information 5
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D ANGER 6 Har dwar e Maint enance Manual
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Chapt er 1 . Safety information 7
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PERIGO PERIGO PERIGO PERIGO PERIGO PERIGO 8 Har dwar e Maint enance Manual
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PERIGO PERIGO D ANGER D ANGER D ANGER Chapt er 1 . Safety information 9
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D ANGER D ANGER D ANGER D ANGER D ANGER V ORSICHT 10 Har dwar e Maint enance Manual
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V ORSICHT V ORSICHT V ORSICHT V ORSICHT Chapt er 1 . Safety information 11
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V ORSICHT V ORSICHT V ORSICHT 12 Har dwar e Maint enance Manual
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Chapt er 1 . Safety information 13
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14 Har dwar e Maint enance Manual
