3. Disconnect all the connectors from the
PF main PWB (a).
4. Remove two screws (a)(M3x8) and
remove the PF main PWB (c) from two
holders (b).
5. Check or replace the PF main PWB (c)
and then reattach the parts in the origi-
nal position.
b
a
a
4-223
2WA/2NJ/2RK
a
a
Figure 4-338
c
Figure 4-339
14j0522
b
14j0523