Pioneer WYS Series Disassembly Manual page 10

Procedure
9) Remove 1 screw and open the 2 clips
along the direction indicated in right
Figure 21).
image (see
10) Pull out the electrical main board
along the direction indicated in right
image to remove it (see
Figure 22).
Note: This section is for reference only. Actual unit appearance may vary.
Page 10
Illustration
Figure 21
Figure 22