Lenovo Thinkpad User Manual page 6

Charging method
ThinkPad Tablet Dock (fastest
charging method)
ThinkPad Tablet AC Charger
ThinkPad Tablet DC Charger
A USB connection between the
micro USB connector on the tablet
and a USB connector of a personal
computer or other device that
complies with the USB 2.0 standards
(slowest charging method)
Charging devices might become warm during normal use. Ensure that you have adequate ventilation around
the charging device. Unplug the charging device if any of the following occurs:
• The charging device has been exposed to rain, liquid, or excessive moisture.
• The charging device shows signs of physical damage.
• You want to clean the charging device.
Lenovo is not responsible for the performance or safety of products not manufactured or approved by
Lenovo.
Prevent hearing damage:
Your tablet has a headphone connector. Always use the headphone connector for headphones (also called a
headset) or earphones.
CAUTION:
Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of
the equalizer to maximum increases the earphone and headphone output voltage and the sound
pressure level. Therefore, to protect your hearing, adjust the equalizer to an appropriate level.
Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if
the output of the headphone or earphone connectors do not comply with specifications of EN 50332-2.
The headphone output connector of your tablet complies with EN 50332-2 Sub clause 7. This specification
limits the tablet's maximum wide band true RMS output voltage to 150 mV. To help protect against hearing
loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7 limits) for a
wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 50332-2 can be
dangerous due to excessive sound pressure levels.
If your tablet came with headphones or earphones in the package, as a set, the combination of the
headphones or earphones and the tablet already complies with the specifications of EN 50332-1. If different
headphones or earphones are used, ensure that they comply with EN 50332-1 (Clause 6.5 Limitation
Values). Using headphones that do not comply with EN 50332-1 can be dangerous due to excessive
sound pressure levels.
iv
User Guide
Tablet on
(Display is on)
Approved
Approved, but the battery will charge
slowly
Approved, but the battery will charge
slowly
Might not charge due to USB 2.0
power limits.
If the power consumption of the tablet
exceeds USB 2.0 power limits, the
battery will discharge to compensate
for the additional power required by
the tablet.
Tablet off or in screen lock mode
(Display is off)
Approved
Approved
Approved
Approved