Lenovo B50-45 Hardware Maintenance Manual - Lenovo B50-xx, B50-30 Touch Notebo - Page 8

generators, electrical

Get Lenovo B50-45 PDF manuals and user guides View all Lenovo B50-45 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 8 highlights

Lenovo B50-30/B50-30 Touch/B50-45/ B50-70 Hardware Maintenance Manual • 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. 4

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
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.