SERVICE MANUAL
AV RECEIVER
RX-V483/HTR-4071
Note:
When the DIGITAL P.C.B. or IC23 on DIGITAL P.C.B. is replaced, this unit will display “Internal Error” and will
not operate properly. The model name and serial number MUST be written to the backup IC (EEPROM: IC23 on
DIGITAL P.C.B.) to have proper operation. (For detailed procedure, refer to related Service News or Service Bulletin.
Or contact your local Yamaha representative.)
注意：
DIGITAL
P.C.B. または DIGITAL P.C.B. の IC23 を交換すると、“
Internal Error” が表示されて本機が正常に動作しな
くなります。正常に動作させるために、モデル名とシリアル番号をバックアップ IC（EEPROM：DIGITAL P.C.B. の
IC23）へ書き込む必要があります。（詳しい手順は、関連するサービスニュース、または技術報告を参照してくださ
い。もしくはヤマハのサービスセンターまでご連絡ください）
■ CONTENTS
TO SERVICE PERSONNEL ........................................... 2
FRONT PANELS ............................................................ 3
REAR PANELS .............................................................. 4
REMOTE CONTROL PANEL ......................................... 9
SPECIFICATIONS / 参考仕様 ...................................... 10
INTERNAL VIEW .....................................
.................... 14
SERVICE PRECA
UTIONS / サービス時の注意事項 .... 14
DISASSEMBLY PROCEDURES / 分解手順 ................ 15
UPDATING FIRMWARE /
ファームウェアのアップデート ................................. 20
SELF-DIAGNOSTIC FUNCTION /
ダイアグ（自己診断機能） .......................................... 24
POWER AMPLIFIER ADJUSTMENT /
パワーアンプ調整 ...................................................... 68
DISPLAY DATA ...........................
................................. 69
IC DAT
A ........................................................................ 72
BLOCK DIAGRAMS ..................................................... 83
WIRING DIAGRAMS .................................................... 86
PRINTED CIRCUIT BOARDS ...................................... 88
PIN CONNECTION DIAGRAMS ................................ 102
CIRCUIT DIAGRAMS ....
............................................. 103
REPLACEMENT PAR
TS LIST ....................................115
REMOTE CONTROL .................................................. 138
FIRMWARE UPDATING PROCEDURE ..................... 141
ファームウェア更新手順 ............................................ 147
101388
'17.04
RX-V483/HTR-4071
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