Yamaha R-N500 Service Manual page 11

3. Removal of Sub-chassis Unit
a. Remove 2 screws ( ⑥ ). (Fig. 2)
b. Remove CB21, CB61, CB426, CB461, CB463 and
CB952. (Fig. 2)
c. Unlock and remove CB205. (Fig. 1)
d. Remove the sub-chassis unit. (Fig. 2)
4. Removal of DIGITAL P.C.B.
a. Remove screw ( ⑦ ) and then remove the support.
(Fig. 2)
b. Remove 2 screws ( ⑧ ) and 9 screws ( ⑨ ). (Fig. 3)
c. Remove CB23, CB30, CB64 and CB65. (Fig. 2)
d. Unlock and remove CB24 and CB25. (Fig. 1)
e. Remove the DIGITAL P.C.B. together with the
OPERATION (3)–(5) P.C.B.s. (Fig. 2)
Remove CB24, CB25, CB205
1 Unlock the connector
Remove the cable
2
Connected
1
Cable
Connect CB24, CB25, CB205
1 Lock the connector
Insert the cable
2
Connected
1
Cable
OPERATION (10) P.C.B.
⑥
Sub-chassis unit
1
Power transformer
⑬
⑬
2
⑩
1
2
CB426
CB463
⑥
Fig. 2
⑨
Fig. 3
5. Removal of Amp Unit and Power Transformer
a. Remove 2 screws ( ⑩ ) and screw ( ⑪ ). (Fig. 2)
b. Remove 2 screws ( ⑫ ). (Fig. 3)
c. Remove push rivet and then remove the amp unit.
(Fig. 2)
d. Remove 4 screws ( ⑬ ). (Fig. 2)
e. Remove the power transformer. (Fig. 2)
CB65
CB24
CB952
CB64
CB25
CB61
⑦
Push rivet
CB23
Support
OPERATION
(5) P.C.B.
CB205
CB461
MAIN (1) P.C.B.
OPERATION (6) P.C.B.
⑧
Rear view
⑫
R-N500
DIGITAL P.C.B.
OPERATION (4) P.C.B.
CB30
CB21
OPERATION (3)
⑪
P.C.B.
⑨
AMP unit
11