iii
About this manual
........................................
iv
Safety information
.........................................
1
General
safety
......................................................
2
Electrical
safety
....................................................
3
Safety
inspection
guide
......................................
5
Handling
devices
that
are
sensitive
to
electro
‐
static
discharge
....................................................
6
Grounding
requirements
...................................
6
Safety
notices:
multilingual
translations
..........
7
Laser
compliance
statement
.............................
14
Important service information
...................
16
Strategy
for
replacing
FRUs
.............................
16
Strategy
for
replacing
a
hard
disk
drive .. 17
Important
notice
for
replacing
a
system
board
.............................................................
17
Important
information
about
replacing
RoHS
compliant
FRUs
.................................................
18
General checkout
........................................
19
What
to
do
first
..................................................
20
Power
system
checkout
....................................
21
Checking
the
AC
adapter
...........................
21
Checking
operational
charging
.................
21
Checking
the
battery
pack
.........................
22
Related service information
.......................
23
Restoring
the
factory
contents
by
using
Recov
‐
ery
Disc
Set
.........................................................
23
Passwords
...........................................................
24
Power
‐
on
password
....................................
24
Hard
‐
disk
password
...................................
24
Supervisor
password
..................................
24
Power
management
..........................................
25
Screen
blank
state
........................................
25
Putting
the
computer
to
sleep
or
shutting
it
down
.............................................................
25
Lenovo B50-30/B50-30 Touch/B50-45/B50-70
27
Specifications
.....................................................
27
Status
indicators
................................................
29
Fn
key
combinations
.........................................
30
Hotkeys
...............................................................
30
FRU
replacement
notices
..................................
31
Screw
notices
................................................
31
Removing
and
replacing
an
FRU
....................
32
1010
Battery
pack
.........................................
33
1020
Optical
drive
.......................................
34
1030
Bottom
slot
cover
................................
36
1040
Hard
disk
drive
...................................
37
1050
DIMM
...................................................
39
1060
PCI
Express
Mini
Card
for
wireless
LAN/WAN
....................................................
40
1070
Keyboard
..............................................
41
1080
Keyboard
bezel
...................................
43
1090
Finger
print
and
power
board
..........
45
1100
USB
board
and
ODD
board
...............
47
1110
Led
board
.............................................
48
1120
Docking
board
(on
select
models)
....
49
1130
System
board
.......................................
50
1140
Fan
and
heat
sink
assembly
..............
53
1150
Speakers
and
battery
board
...............
54
1160
LCD
unit
and
base
cover
...................
55
1170
LCD
front
bezel
...................................
59
1180
LCD
panel
............................................
60
1190
LCD
hinges
..........................................
62
1200
Antenna,
LCD
cable,
and
integrated
camera
...........................................................
63
Locations
.............................................................
65
Front
view
.....................................................
65
Right
‐
side
view
............................................
66
Bottom
and
left
‐
side
view
..........................
67
Parts
list
...............................................................
68
Overall
...........................................................
69
LCD
FRUs
.....................................................
73
Keyboard
.......................................................
75
Miscellaneous
parts
.....................................
78
AC
adapters
..................................................
79
Screws
............................................................
79
Power
cords
..................................................
80
Notices
.........................................................
83
Trademarks
.........................................................
84
Contents