1. Connecting the Equipment 1.1 Connecting the Banknote Acceptor 1. Identifying the MDB port: On your Zanussi Necta Astro coffee machine, identify the MDB port. This is usually located on the back of the machine. 2. Connecting the MDB cable: Use the MDB cable to connect the Chas Code banknote acceptor to the MDB port of the machine. Make sure the connection is firm and the pins are aligned correctly. 3. Checking the power: Make sure the banknote acceptor is properly powered. It must be connected to a suitable power source. 1.2 Connecting the NRI Coin Acceptor 1. Identifying the MDB port: Similar to the banknote acceptor, the NRI coin acceptor will have an MDB port. 2. Connecting the coin acceptor: Use the same MDB cable to connect the coin acceptor to the MDB port of the coffee machine. 3. Change Configuration: Make sure the coin acceptor is configured correctly to return change. This involves checking the coin acceptor's internal settings, according to its manual. 2. MDB Protocol Setup 2.1 Access the Machine Settings Menu, and on the motherboard, set the dip-swtch commutator pins to the ON position, i.e. to the accumulator