OBTAIN OUTPUT OF DEEP NEURAL NETWORK USING WEIGHTS

I have created a deep neural network in MATLAB R2016a using help provided in mathworks site https://in.mathworks.com/help/nnet/ug/construct-deep-network-using-autoencoders.html. I have trained it using inputs and targets. Also i can obtain the outputs of the network by providing inputs(other than the training inputs) to the 'deepnet' function.. E.g output = deepnet(input).

But I want to obtain the outputs of the neural netowrk without using any function , i.e using only the weights obtained from the network. I know that the weights and bias values can be obtained. But I don't know how to apply these properly to get the required ouput...

Please help