Specifications

Lenovo B50-30/B50-30 Touch/B50-45/ B50-70
Hardware Maintenance Manual
4
• Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesof
thesehazardsaremoistfloors,nongroundedpowerextensioncables,power
surges,andmissingsafetygrounds.
• Donottouchliveelectricalcircuitswiththereflectivesurfaceofaplastic
dentalmirror.Thesurfaceisconductive;suchtouchingcancausepersonal
injuryandmachinedamage.
• Donotservicethefollowingpartswiththepoweronwhentheyareremoved
fromtheirnormaloperatingplacesinamachine:
– Powersupplyunits
– Pumps
– Blowersandfans
– Motorgenerators
andsimilarunits.(Thispracticeensurescorrectgroundingoftheunits.)
• Ifanelectricalaccidentoccurs:
– Usecaution:donotbecomeavictimyourself.
– Switchoffthepower.
– Sendthevictimtogetmedicalaid.