2RV/2RW/2RX/2RY/3RA-1
4-86
22. Open the top cover (a).
23. Remove the screws(M3x8S tight)(b),
detach the right middle cover (c).
Figure 4-156
24. Remove two screws (a) (M3×8 tight).
25. Detach the USB PWB (b).
26. Check or replace the USB PWB (b),
and then reattach the parts which are
detached in the original position.
Figure 4-157
b
c
a