Yamaha RX-V681 Service Manual

RX-V681/RX-A760
Note:
When the DIGITAL P.C.B. or IC82 on DIGITAL (1) P.C.B. is replaced, this unit will display "Internal Error" and will not
operate properly. The model name MUST be written to the backup IC (EEPROM: IC82 on DIGITAL (1) P.C.B.) to
have proper operation. (For detailed procedure, refer to related Service News or Service Bulletin. Or contact your
local Yamaha representative.)
■ CONTENTS
TO SERVICE PERSONNEL ........................................... 2
FRONT PANELS ............................................................ 3
REAR PANELS .............................................................. 4
REMOTE CONTROL PANEL ....................................... 10
SPECIFICATIONS ........................................................ 11
INTERNAL VIEW ......................................................... 15
SERVICE PRECAUTIONS ........................................... 16
DISASSEMBLY PROCEDURES .................................. 17
UPDATING FIRMWARE ............................................... 27
SELF-DIAGNOSTIC FUNCTION ................................. 30
POWER AMPLIFIER ADJUSTMENT .......................... 72
1 0 1 3 6 7
AV RECEIVER
SERVICE MANUAL
DISPLAY DATA ............................................................ 73
IC DATA ........................................................................ 75
BLOCK DIAGRAMS .................................................... 83
WIRING DIAGRAM ...................................................... 87
PRINTED CIRCUIT BOARDS ...................................... 88
PIN CONNECTION DIAGRAMS ................................ 110
SCHEMATIC DIAGRAMS .......................................... 111
REPLACEMENT PARTS LIST ................................... 127
REMOTE CONTROL .................................................. 156
FIRMWARE UPDATING PROCEDURE ..................... 158
'16.05