Greece made its first €310m (£223.6m) payment to the International Monetary Fund, but will struggle to make the €1.5bn of repayments to the fund over the next two weeks.
Three other instalments are due on March 13, 16 and 20, as part of the agreed bailout deal.
Speaking in an interview with Germany's Der Spiegel magazine, the Greek Prime Minister Alexis Tsipras said the European Central Bank "is still holding the rope which we have around our necks".
Greece's left-wing government sent a list of economic reforms to Brussels on Friday, expanding on an earlier list of reforms it had outlined.
The list is thought to include measures to combat tax evasion and reduce red tape, as well as measures to boost government coffers through the repayment of pension and tax fund arrears.
Greek banks are not facing a liquidity crisis and have enough capital to cope with deposit outflows, according to central bank chief Yannis Stournaras.
"There is full support for Greek banks (from the ECB) there is absolutely no danger," Stournaras said on Friday.
His comments followed demands from Greek Prime Minister Alexis Tsipras for the country's debt to be restructured, also known as a haircut.
Eurozone leaders have taken a tough stance on Greece's recently-elected government, which won office on an anti-austerity platform.
The European Central Bank will only resume lending to Greek banks when it sees that Athens is complying with bailout conditions, the bank's president Mario Draghi said on Thursday.