Toyota Echo's conditioned air evaporator

Greetings I am new in this forum I would like to a problem that I have with the evaporator of a Toyota Echo 2000 is that it leads him to review because I stop cooling and they told me that it was the evaporator that I was on the panel, and I disassemble it but I did not see it I would like if anyone knows how to disassemble the evaporator or have a scheme, diagram or manual that I could do it I will do them myself.

The air conditioning evaporator, we don't call him evaporisador, because I know, and make it clear that I am not an expert in air, you have the bomb outside, the accumulator, the canyraries and the radiator and inside on the occasion a kind of internal radiator and nothing else. According to what I know, anyway in the manual section is the Toyota Eco O Yaris workshop manual, if you do not approve as an echo look for it by motor if it is 1nz or 2nz your cachay.