When Checking The P.c.b. - Yamaha RX-V559 Service Manual

RX-V559/HTR-5950/DSP-AX559

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. 6)
MAIN (1) P.C.B.
G1001
Cloth
16
Ground Lead
OPERATION (4) P.C.B.
G3001
Ground Lead
Fig. 6
HTR-5950
I DISASSEMBLY PROCEDURES
(Remove parts in the order as numbered.)
Disconnect the power cable from the AC outlet.
1. Removal of Top Cover
a. Remove 4 screws (1), 5 screws (2) and 1 screw (3).
(Fig. 1)
b. Slide the Top Cover rearward to remove it. (Fig. 1)
2. Removal of Front Panel Unit
a. Remove 6 screws (4). (Fig. 1)
b. Remove a push rivet (5). (Fig. 1)
c. Remove the Barrier/FFC. (Fig. 1)
d. Remove CB5, CB203, CB205 and CB310. (Fig. 1)
e. Remove the Front Panel Unit. (Fig. 1)
Top Cover
1
Barrier / FFC 5
CB310
4
Front Panel Unit
4
4
DSP P.C.B. CB202
CB57
CB4
CB9
CB3 8 CB2 8
3. Removal of FUNCTION (1) P.C.B.
a. Remove 2 screws (6). (Fig. 2)
b. Remove 7 screws (7). (Fig. 4)
c. Remove CB200-202, CB204, CB206 and CB207.
(Fig. 2)
d. Remove the FUNCTION (1) P.C.B.. (Fig. 2)
2
2
3
1
CB5
CB205
CB203
Fig. 1
CB200 FUNCTION (1) P.C.B.
CB204
CB206
CB207
CB201
6
6
Fig. 2