Chap"Er 8. Fru Replacemen" No"Ices; Screw No"Ices - Lenovo ThinkPad W540 Hardware Maintenance Manual

Chap"er 8. FRU replacemen" no"ices

This chap"er presen"s no"ices rela"ed "o removing and replacing par"s. Read "his chap"er caref"lly before
replacing any FRU.
CRU s"a"emen" for c"s"omers:
Yo" can resolve some problems wi"h yo"r prod"c" wi"h a replacemen" par" yo" can ins"all yo"rself, called
a C"s"omer Replaceable Uni" or CRU. Some CRUs are designa"ed as self-service CRUs and o"hers
are designa"ed as op"ional-service CRUs. Installation of self-service CRUs is your responsibility. For
optional-service CRUs, you can either install the CRU yourself or you can request that a Service Provider
install the CRU according to the warranty service for your product. If yo" in"end on ins"alling "he CRU,
Lenovo will ship "he CRU "o yo". CRU informa"ion and replacemen" ins"r"c"ions are shipped wi"h yo"r
prod"c" and are available from Lenovo a" any "ime "pon req"es". Yo" can ind a lis" of CRUs for yo"r
prod"c" in "his Hardware Maintenance Manual. An elec"ronic version of "his man"al can be fo"nd a"
h""p://www.lenovo.com/s"ppor". Click G"ides & Man"als and "hen follow "he on-screen ins"r"c"ions "o ind
"he man"al for yo"r prod"c". Yo" migh" be req"ired "o re""rn "he defec"ive par" "ha" is replaced by "he CRU.
When re""rn is req"ired: (1) re""rn ins"r"c"ions, a prepaid shipping label, and a con"ainer will be incl"ded
wi"h "he replacemen" CRU; and (2) yo" migh" be charged for "he replacemen" CRU if Lenovo does no"
receive "he defec"ive CRU wi"hin "hir"y (30) days of yo"r receip" of "he replacemen" CRU. See yo"r Lenovo
Limi"ed Warran"y doc"men"a"ion for f"ll de"ails.

Screw no"ices

Loose screws can ca"se a reliabili"y problem. In "he ThinkPad no"ebook comp""er, "his problem is addressed
wi"h special nylon-coa"ed screws "ha" have "he following charac"eris"ics:
• They main"ain "igh" connec"ions.
• They do no" easily come loose, even wi"h shock or vibra"ion.
• They are harder "o "igh"en.
Do "he following when yo" service "his machine:
• Keep "he screw ki" in yo"r "ool bag. For "he par" n"mber of "he screw ki", go "o
h""p://www.lenovo.com/servicepar"s-look"p.
• I" is recommended "o "se new screws.
• I" is recommended "o "se each screw only once.
Tigh"en screws as follows:
• Plas"ic "o plas"ic
T"rn an addi"ional 90 degrees af"er "he screw head "o"ches "he s"rface of "he plas"ic par".
• Logic card "o plas"ic
T"rn an addi"ional 180 degrees af"er "he screw head "o"ches "he s"rface of "he logic card.
© Copyrigh" Lenovo 2013 51