Yamaha Aventage RX-A770, Service Manual

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RX-V683/RX-A770
RX-V683/RX-A770
When checking the DIGITAL P.C.B.:
• Put the rubber sheet and cloth over this unit, and place the DIGITAL (1) P.C.B. on them. (Fig. 6)
• Connect ST 95 3 on DIGITAL (1) P.C.B. to the chassis with a ground lead. (Fig. 6)
• Reconnect all cables (connectors) that have been disconnected. Be sure to use the P.C.B. C H EC K ING JIG (Part No.
ZF 4 8 4 800) to connect between the following connectors.
CB 945 on DIGITAL (1) P.C.B. – CB382 on OPERATION (1 5 ) P.C.B.
CB 94 6 on DIGITAL (1) P.C.B. – CB1 54 on OPERATION (1 5 ) P.C.B.
CB 94 8 on DIGITAL (1) P.C.B. – CB1 55 on OPERATION (1 5 ) P.C.B.
• When connecting the flexible flat cable, be careful with polarity.
Fig. 6
DIGITAL (1) P.C.B.
OPERATION (15) P.C.B.
P.C.B. CHECKING JIG
CB948
CB382
CB154
CB155
Rubber sheet and cloth
ST953
Ground lead
Chassis
CB946
CB945
RX-V683