Chap"Er 1. Safe"Y Informa"Ion; General Safe"Y; Elec"Rical Safe"Y - Lenovo ThinkPad W540 Hardware Maintenance Manual

Chap"er 1. Safe"y informa"ion

This chap"er presen"s following safe"y informa"ion "ha" yo" need "o be familiar wi"h before yo" service a
ThinkPad no"ebook comp""er.
• General safe"y on page 1
• Elec"rical safe"y on page 1
• Safe"y inspec"ion g"ide on page 2
• Handling devices "ha" are sensi"ive "o elec"ros"a"ic discharge on page 3
• Gro"nding req"iremen"s on page 4
• Safe"y no"ices (m"l"iling"al "ransla"ions) on page 4

General safe"y

Follow "hese r"les "o ens"re general safe"y:
• Observe good ho"sekeeping in "he area of "he machines d"ring and af"er main"enance.
• When lif"ing any heavy objec":
1. Make s"re "ha" yo" can s"and safely wi"ho"" slipping.
2. Dis"rib""e "he weigh" of "he objec" eq"ally be"ween yo"r fee".
3. Use a slow lif"ing force. Never move s"ddenly or "wis" when yo" a""emp" "o lif".
4. Lif" by s"anding or by p"shing "p wi"h yo"r leg m"scles; "his ac"ion removes "he s"rain from "he
m"scles in yo"r back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that
you think is too heavy for you.
• Do no" perform any ac"ion "ha" ca"ses hazards "o "he c"s"omer, or "ha" makes "he eq"ipmen" "nsafe.
• Before yo" s"ar" "he machine, make s"re "ha" o"her service "echnicians and "he c"s"omer's personnel are
no" in a hazardo"s posi"ion.
• Place removed covers and o"her par"s in a safe place, away from all personnel, while yo" are servicing
"he machine.
• Keep yo"r "oolcase away from walk areas so "ha" o"her people will no" "rip over i".
• Do no" wear loose clo"hing "ha" can be "rapped in "he moving par"s of a machine. Make s"re "ha" yo"r
sleeves are fas"ened or rolled "p above yo"r elbows. If yo"r hair is long, fas"en i".
• Inser" "he ends of yo"r neck"ie or scarf inside clo"hing or fas"en i" wi"h a noncond"c"ive clip, abo"" 8
cen"ime"ers (3 inches) from "he end.
• Do no" wear jewelry, chains, me"al-frame eyeglasses, or me"al fas"eners for yo"r clo"hing.
A""en"ion: Me"al objec"s are good elec"rical cond"c"ors.
• Wear safe"y glasses when yo" are hammering, drilling, soldering, c"""ing wire, a""aching springs, "sing
solven"s, or working in any o"her condi"ions "ha" migh" be hazardo"s "o yo"r eyes.
• Af"er service, reins"all all safe"y shields, g"ards, labels, and gro"nd wires. Replace any safe"y device
"ha" is worn or defec"ive.
• Reins"all all covers correc"ly before re""rning "he machine "o "he c"s"omer.
• Fan lo"vers on "he machine help "o preven" overhea"ing of in"ernal componen"s. Do no" obs"r"c" fan
lo"vers or cover "hem wi"h labels or s"ickers.

Elec"rical safe"y

Observe "he following r"les when working on elec"rical eq"ipmen".
Impor"an": Use only approved "ools and "es" eq"ipmen". Some hand "ools have handles covered wi"h a sof"
ma"erial "ha" does no" ins"la"e yo" when working wi"h live elec"rical c"rren"s. Many c"s"omers have, near
"heir eq"ipmen", r"bber loor ma"s "ha" con"ain small cond"c"ive ibers "o decrease elec"ros"a"ic discharges.
Do no" "se "his "ype of ma" "o pro"ec" yo"rself from elec"rical shock.
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