5. Disconnect all the connectors from the
DF main PWB (a).
6. Remove six screws (b)(M3x8) and
remove the DF main PWB (a).
7. Check or replace the DF main PWB (a),
and then reattach the parts in the origi-
nal position.
YC18
YC17
YC16
YC12
YC3
YC19
YC21
YC14
YC20
YC5
YC15
YC4
YC8
YC7
YC6
YC9
YC1
U3
YC10
YC23
YC2
Figure 4-376
4-243
2WA/2NJ/2RK
YC22
YC13
a
b
b
b
b
b
14j0556