This capital loss does not directly effect the bank’s ability to increase deposit liabilities. They still have $100,000 in excess reserves, which means they could —hypothetically—increase deposit liabilities by $2 Million, but indirectly it does create a limitation.
Because of the deterioration of their capital, First Bank can add only $47,500 to their note portfolio. Since they cannot create deposit liabilities for which they get nothing in return, they will limit additional deposit liabilities to $47,500 to match the assets they can buy. Thus, capital limitations can limit deposit liabilities (money) creation.