Yamaha RXV559 - AV Receiver, Руководство по обслуживанию

Страница: 17 / 116

17
RX-V559/HTR-5950/DSP-AX559
CB402 CB103
CB401
CB105
( U, C models )
CB104
FUNCTION (2) P.C.B. VIDEO P.C.B.
0
B
Fig. 3
4. Removal of DSP P.C.B.
a. Remove 2 screws ( 8 ). (Fig. 2)
b. Remove 7 screws (U, C models) / 6 screws (T, A
models) ( 9 ). (Fig. 4)
c. Remove CB2-4, CB9 and CB57. (Fig. 2)
d. Remove the DSP P.C.B.. (Fig. 2)
5. Removal of VIDEO P.C.B.
a. Remove 1 push rivet ( 0 ). (Fig. 3)
b. Remove 6 screws ( A ). (Fig. 4)
c. Remove CB401 and CB402. (Fig. 3)
b. Remove the VIDEO P.C.B.. (Fig. 3)
7
D I
A 9 C U, C models
8. Removal of MAIN (1), (2), (4) and (5) P.C.B.s
a. Remove the Artbase/P.C.B.. (Fig. 5)
b. Remove 2 screws (
E ), 1 screw ( F ), 2 screws ( G )
and 1 screw ( H ). (Fig. 5)
c. Remove 5 screws ( I ). (Fig. 4)
d. Remove CB103, CB104 and CB105 (U, C models). (Fig. 3)
e. Remove MAIN (1), (2), (4) and (5) P.C.B.s together with
the Heat Sink. (Fig. 5)
H
F
E
E
G
TUNER
Heat Sink
Artbase / P.C.B.
MAIN (1) P.C.B.
MAIN (2) P.C.B.
MAIN (4) P.C.B.
MAIN (5) P.C.B.
6. Removal of FUNCTION (2) P.C.B.
a. Remove 1 push rivet ( B ). (Fig. 3)
b. Remove 5 screws ( C ). (Fig. 4)
c. Remove the FUNCTION (2) P.C.B.. (Fig. 3)
7. Removal of TUNER
a. Remove 3 screws ( D ). (Fig. 4)
b. Remove the TUNER. (Fig. 5)
Fig. 4
When checking the P.C.B.:
• Put a Cloth over the equipment. Put the P.C.B.s together with the heat sink upright on the Cloth and check them. (Fig. 6)
• Reconnect all cables (connectors) that have been disconnected.
• When connecting the flat cable, use care for the polarity.
• The P.C.B. removed from the chassis does not work because its grounding is loose. Be sure to connect the ground of
Rear Panel, MAIN (1) P.C.B. (G1001) and OPERATION (4) P.C.B. (G3001) to the chassis with a ground lead or the
like.
Fig. 5
Cloth
G1001 G3001
Ground lead
OPERATION (4) P.C.B.
MAIN (1) P.C.B.
Ground lead
Fig. 6