Pioneer WYS Series Disassembly Manual page 12

Procedure
1) Release the hook on the evaporator (see
Figure 25).
2) Remove the one screw on the evaporator
located at the fixed plate (see
Figure 26).
3) Pull out the evaporator (see
Note: This section is for reference only. Actual unit appearance may vary.
Page 12
Illustration
Figure 27).
Figure 25
Figure 26
Figure 27