Check the following:

• Use the keyboard within about 33 ft. / 10 m of your VAIO computer. See About the Usage Environment for the Keyboard for more information.

• Set the power switch of the keyboard to ON. See Parts and Controls of the Keyboard for more information.

  The keyboard supplied with your VAIO computer has a power switch to save the AA battery power.

• Insert new dry cell AA battery. See Replacing the AA Battery of the Keyboard for more information.

• If the battery indicator light of the keyboard is blinking, the battery is getting low. Replace it with a new one. See Replacing the AA Battery of the Keyboard for more information.

• Make sure the keyboard is properly connected to your VAIO computer. See Connecting the Wireless Keyboard for more information.