The charge indicator does not appear.
Make sure you have securely connected the tablet with the USB cable for Multi Port, the USB cable for Multi
Port with the AC adapter, the AC adapter with an AC power cord (mains lead), and an AC power cord (mains
lead) with an AC outlet (wall socket).
* You do not need an AC power cord (mains lead) in some countries.
Your tablet does not support charging the battery via USB connection from a computer or a commercially
available charger not designated by Sony. Charge the battery using the supplied AC adapter or designated
Sony AC adapter.