Uart - where do the lines go

I was looking at my C64 Mini board and was thinking where do they go,cos mind don't work so it has to have resistors before it goes into the CPU,now If I could find out what resistors then and where I could try to replace them,but that would be very hard cos of how small the board is.

Here a picture of the Uart connector..


and here is the back of the board at the same place..


and another picture at a different angle..


Here is the schematic of the A20-OLinuXino-Lime board that this board is part copy of.. just the Uart part..


I am not that good at reading schematics.