HITACHI EX200LC-2 control operation

Good afternoons friends, I have a small inconvenience with the controls of an ex200lc-2 Hitachi I have changed the packing of this and I have returned to put together as it is in the catalog of parts, but when placing it in the excavator only two controls work one to upload the arm and another to lower it, I have tried to exchange the pistons but I do not solve the error .... anyone knows how to fix this problem ???