When Checking The Digital P.c.b.; When Checking The Main P.c.b. - Yamaha HTR-3064 Service Manual

When checking the DIGITAL P.C.B.

• Put the rubber sheet and cloth over this unit, and place the DIGITAL P.C.B. on them. (Fig. 4)
• Connect ST201 on DIGITAL P.C.B. to the chassis with a ground lead or the like. (Fig. 4)
• Reconnect all cables (connectors) that have been disconnected. Be sure to use the P.C.B. CHECKING JIG (Part No.
WW483800) to connect between the following connectors.
CB263 on DIGITAL P.C.B. – CB196 on OPERATION (4) P.C.B.
CB264 on DIGITAL P.C.B. – CB195 on OPERATION (4) P.C.B.
• When connecting the flexible flat cable, be careful with polarity.
Rubber sheet and cloth
ST201
Ground lead
When checking the MAIN (1) P.C.B.
a. Remove the top cover. (Fig. 1)
b. Remove 3 screws ( ⑨ ). (Fig. 3)
c. Remove 5 screws ( ⑩ ) and 4 screws ( ⑪ ). (Fig. 5)
d. Place the P.C.B.s (with rear panel) upright. (Fig. 6)
e. Connect the heatsink, rear panel and MAIN (1) P.C.B. (G3) to the chassis with a ground lead or the like. (Fig. 6)
⑩ ⑪
⑩
Fig. 5
DIGITAL P.C.B.
CB263
CB264
P.C.B. CHECKING JIG
CB195
Chassis
Fig. 4
MAIN (1) P.C.B.
⑩
Heatsink
RX-V371/HTR-3064
OPERATION (4) P.C.B.
CB196
Rear panel
G3
Ground lead
Fig. 6
Ground lead
Chassis
19