Lenovo 3012-2KU - IdeaCentre C300 - Desktop PC Safety And Warranty Manual page 22

1. To avoid unexpected failure, pay attention to ensure the computer to operate
within the scope of environmental specifications and:
Adaptability index for product operation environment
Adaptability for power supply
Operating temperature
Relative operation humidity
Storage & transportation temperature
Relative humidity for storage & transportation
Atmosphere pressure
Warning
It will cause irremovable failure when the computer is powered on
immediately after it is moved from the environment with low temperature to
the operating temperature, so make sure your computer to restore for more
than 2 hrs under the operating temperature.
2. Select appropriate operating desks and seats and adjust their height to ensure
your forearms are parallel with the floor while operating the keyboard and
mouse, and your eyes are basically on the same level with the monitor, as well
as ensure that your thighs are basically parallel with the floor and your feet can
be placed on the floor steadily. Furthermore, you may also choose backrest-
adjustable seats to enhance your comfort.
31037314B_SWG(AIO)_EN_V1.1.indd 17
Set the monitor and screen to be
on the even level with or slightly
lower level than your line of sight
Adjust the elevation of the monitor
to a comfort angle of view
Keep your wrists in a comfort and
relaxed position
Keep your forearms on the even
level with the desktop
Keep your feet on the floor
steadily
220V ±22V, 50Hz ±1Hz
10˚C - 35˚C
35% - 80%
-20˚C - 35˚C
20% - 93% (40˚C)
86 kPa - 106 kPa
Safety and warranty guide (AIO)
17
2009.4.13 2:55:17 PM