Yamaha RX-V683 Service Manual page 21

4. Removal of DIGITAL P.C.B.
a. Remove screw (5) and 6 screws (6). (Fig. 5)
b. Remove 3 screws (7). (Fig. 4)
c. Remove CB76, CB78, CB79, CB80, CB942, CB944 and CB949. (Fig. 4)
d. Unlock and remove CB946 and CB948. (Fig. 4)
e. Remove the DIGITAL (1) P.C.B. which is connected directly to the OPERATION (15) P.C.B. with board-to-board
connectors. (Fig. 4)
5. Removal of AMP Unit and Power Transformer
a. Remove screw (8), 2 screws (9) 3 screws (j) and 4 screws (k). (Fig. 4)
b. Remove 3 screws (l). (Fig. 5)
c. Remove the AMP unit together with the power transformer. (Fig. 4)
Remove CB946 and CB948
① Unlock the connector
②
Connected Remove the cable
①
Cable
Connect CB946 and CB948
① Lock the connector
Connected ② Insert the cable
①
Cable
A
Power transformer
Fig. 5
RX-V683
CB76
CB942
①
CB944
②
CB78
①
②
8
A
>
Fig. 4
AMP unit
6
7
DIGITAL (1) P.C.B.
CB80
CB946
CB79
CB948
CB949
9
5
B
RX-V683/RX-A770
CB945
Board-to-board connectors
Board-to-board connectors
CB382
7
OPERATION (15) P.C.B.
>
21