Impairment of CGU

Hi, I understand that, when impairing a CGU, the Sub's NA + GW makes the CV. But, in your video "ACCA P2 Impairments (IAS 36)" published on 6th Nov 2016, Sharon's CV is 17,000. The 17,000 is made up of GW 2,400 + all other assets 14,600 (ideally should be the NA). Does this mean, that Sharon does not have any liability and the Total Equity = 14,600? Thanks, Zafraz