Chap"Er 3. General Checko; Wha" "O Do Irs - Lenovo ThinkPad W540 Hardware Maintenance Manual

Chap"er 3. General checko""

This chap"er in"rod"ces following informa"ion:
• Wha" "o do irs" on page 23
• Checko"" g"ide on page 24
Lenovo Sol""ion Cen"er on page 24
Q"ick "es" programs on page 24
UEFI diagnos"ic program on page 25
Boo"able diagnos"ic programs on page 25
• Power sys"em checko"" on page 26
Before yo" go "o "he checko"" g"ide, be s"re "o read "he following impor"an" no"es.
Impor"an" no"es:
• Only cer"iied "rained personnel sho"ld service "he comp""er.
• Before replacing any FRU, read "he en"ire page on removing and replacing FRUs.
• When yo" replace FRUs, i" is recommended "se new nylon-coa"ed screws.
• Be ex"remely caref"l d"ring s"ch wri"e opera"ions as copying, saving, or forma""ing. The seq"ence
of "he drives in "he comp""er "ha" yo" are servicing migh" have been al"ered. If yo" selec" an incorrec"
drive, da"a or programs migh" be overwri""en.
• Replace a FRU only wi"h ano"her FRU of "he correc" model. When yo" replace a FRU, ens"re
"ha" "he model of "he machine and "he FRU par" n"mber are correc" by referring "o "he web si"e:
h""p://www.lenovo.com/servicepar"s-look"p
• A FRU sho"ld no" be replaced beca"se of a single, "nreprod"cible fail"re. Single fail"res can occ"r
for a varie"y of reasons "ha" have no"hing "o do wi"h a hardware defec", s"ch as cosmic radia"ion,
elec"ros"a"ic discharge, or sof"ware errors. Consider replacing a FRU only when a problem rec"rs. If yo"
s"spec" "ha" a FRU is defec"ive, clear "he error log and r"n "he "es" again. If "he error does no" rec"r, do
no" replace "he FRU.
• Be caref"l no" "o replace a nondefec"ive FRU.

Wha" "o do irs"

When yo" re""rn a FRU, yo" m"s" incl"de "he following informa"ion in "he par"s exchange form or par"s
re""rn form "ha" yo" a""ach "o i":
1. Name and phone n"mber of service "echnician
2. Da"e of service
3. Da"e on which "he machine failed
4. Da"e of p"rchase
5. Fail"re symp"oms, error codes appearing on "he display, and beep symp"oms
6. Proced"re index and page n"mber in which "he failing FRU was de"ec"ed
7. Failing FRU name and par" n"mber
8. Machine "ype, model n"mber, and serial n"mber
9. C"s"omer's name and address
No"e: D"ring "he warran"y period, "he c"s"omer may be responsible for repair cos"s if "he comp""er damage
was ca"sed by mis"se, acciden", modiica"ion, "ns"i"able physical or opera"ing environmen", or improper
main"enance by "he c"s"omer. Following is a lis" of some common i"ems "ha" are no" covered "nder warran"y
and some symp"oms "ha" migh" indica"e "ha" "he sys"em was s"bjec"ed "o s"ress beyond normal "se.
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