Many buyers including Apple have expressed keen interest in buying Toshiba Corp's semiconductor/ chip business. It is expected that the proceeds will more than cover all of Toshiba Corp's debt.
http://appleinsider.com/articl...lash-memory-business
Even if Toshiba Corp sold off its 50% interest in Toshiba Tec, it would not generate enough cash to make much difference in removing Toshiba Corp's debt.
Toshiba Tec's diversification of product lines is key to its long term viability.