Lenovo ThinkCentre M51 Hardware Maintenance Manual - Page 48

Types - 8141

Page 48 highlights

Types 8095, 8096, 8141, 8142, 8145, 8420, and 8421 This section lists the physical specifications. Dimensions Height: 146 mm (5.7 in.) Width: 442 mm (17.4 in.) Depth: 401 mm (15.8 in.) Heat output (approximate) in British thermal units (Btu) per hour: Minimum configuration: 256 Btu/hr (75 watts) Maximum configuration: 1058 Btu/hr (310 watts) Weight Airflow Minimum configuration as shipped: 11 kg (24 lb) Maximum configuration: 14 kg (31 lb) Approximately 1.13 cubic meters per minute (40 cubic feet per minute) maximum Environment Air temperature: System on: 10° to 35°C (50° to 95° F) System off: 10° to 43°C (50° to 110° F) Acoustical noise-emission values Average sound-pressure levels: At operator position: (0.5 meters) Idle: 33 dBA Maximum altitude: 2134 m (7000 ft) Operating: 35 dBA Note: The maximum altitude, 2134 m (7000 ft), is the At bystander position - 1 meter (3.3 ft): maximum altitude at which the specified air temperatures apply. At higher altitudes, the maximum air temperatures are lower than those specified. Idle: 29 dBA Operating: 31 dBA Humidity: Declared (upper limit) sound-power levels: System on: 8% to 80% Idle: 4.3 bels System off: 8% to 80% Operating: 4.4 bels Electrical input Input voltage: Low range: Minimum: 90 V ac Maximum: 180 V ac Input frequency: 50/60 Hz Voltage switch setting: 115 V ac Note: These levels were measured in controlled acoustical environments according to the procedures specified by the American National Standards Institute (ANSI) S12.10 and ISO 7779 and are reported in accordance with ISO 9296. Actual sound-pressure levels in a given location might exceed the average values stated because of room reflections and other nearby noise sources. The declared sound-power levels indicate an upper limit, below which a large number of computers will operate. High range: Minimum: 137 V ac Maximum: 265 V ac Input frequency: 50/60 Hz Voltage switch setting: 230 V ac Input kilovolt-amperes (kVA) (approximate): Minimum configuration as shipped: 0.08 kVA Maximum configuration: 0.25 kVA Note: Power consumption and heat output vary depending on the number and type of optional features installed and the power-management optional features in use. 42 Hardware Maintenance Manual

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Types
8095,
8096,
8141,
8142,
8145,
8420,
and
8421
This
section
lists
the
physical
specifications.
Dimensions
Height:
146
mm
(5.7
in.)
Width:
442
mm
(17.4
in.)
Depth:
401
mm
(15.8
in.)
Weight
Minimum
configuration
as
shipped:
11
kg
(24
lb)
Maximum
configuration:
14
kg
(31
lb)
Environment
Air
temperature:
System
on:
10°
to
35°C
(50°
to
95°
F)
System
off:
10°
to
43°C
(50°
to
110°
F)
Maximum
altitude:
2134
m
(7000
ft)
Note:
The
maximum
altitude,
2134
m
(7000
ft),
is
the
maximum
altitude
at
which
the
specified
air
temperatures
apply.
At
higher
altitudes,
the
maximum
air
temperatures
are
lower
than
those
specified.
Humidity:
System
on:
8%
to
80%
System
off:
8%
to
80%
Electrical
input
Input
voltage:
Low
range:
Minimum:
90
V
ac
Maximum:
180
V
ac
Input
frequency:
50/60
Hz
Voltage
switch
setting:
115
V
ac
High
range:
Minimum:
137
V
ac
Maximum:
265
V
ac
Input
frequency:
50/60
Hz
Voltage
switch
setting:
230
V
ac
Input
kilovolt-amperes
(kVA)
(approximate):
Minimum
configuration
as
shipped:
0.08
kVA
Maximum
configuration:
0.25
kVA
Note:
Power
consumption
and
heat
output
vary
depending
on
the
number
and
type
of
optional
features
installed
and
the
power-management
optional
features
in
use.
Heat
output
(approximate)
in
British
thermal
units
(Btu)
per
hour:
Minimum
configuration:
256
Btu/hr
(75
watts)
Maximum
configuration:
1058
Btu/hr
(310
watts)
Airflow
Approximately
1.13
cubic
meters
per
minute
(40
cubic
feet
per
minute)
maximum
Acoustical
noise-emission
values
Average
sound-pressure
levels:
At
operator
position:
(0.5
meters)
Idle:
33
dBA
Operating:
35
dBA
At
bystander
position
-
1
meter
(3.3
ft):
Idle:
29
dBA
Operating:
31
dBA
Declared
(upper
limit)
sound-power
levels:
Idle:
4.3
bels
Operating:
4.4
bels
Note:
These
levels
were
measured
in
controlled
acoustical
environments
according
to
the
procedures
specified
by
the
American
National
Standards
Institute
(ANSI)
S12.10
and
ISO
7779
and
are
reported
in
accordance
with
ISO
9296.
Actual
sound-pressure
levels
in
a
given
location
might
exceed
the
average
values
stated
because
of
room
reflections
and
other
nearby
noise
sources.
The
declared
sound-power
levels
indicate
an
upper
limit,
below
which
a
large
number
of
computers
will
operate.
42
Hardware
Maintenance
Manual