Yamaha RX-V375U Service Manual

Note:
When the DIGITAL P.C.B. or IC225 on DIGITAL P.C.B. is replaced, this unit will display "Internal Error" and will not
operate properly. The model name and destination MUST be written to the backup IC (EEPROM: IC221 on DIGITAL
P.C.B.) to have proper operation. (For details, refer to "S5. SOFT SWITCH" menu of the self-diagnostic function.)
注意：
DIGITAL P.C.B. ま た は DIGITAL P.C.B. の IC225 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、モデル名と仕向け先をバックアップ IC（EEPROM：DIGITAL P.C.B. の
IC221）へ書き込む必要があります。 （詳細は、ダイアグの S5. SOFT SWITCH メニューを参照してください。 ）
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifi cally Yamaha Products, are already known
and understood by the users, and have therefore not been restated.
WARNING:
IMPORTANT:
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service
departments of Yamaha are continually striving to improve Yamaha products. Modifi cations are, therefore, inevitable and specifi cations
are subject to change without notice or obligation to retrofi t. Should any discrepancy appear to exist, please contact the distributor's
Service Division.
WARNING:
IMPORTANT:
■ CONTENTS
TO SERVICE PERSONNEL ............................................2
FRONT PANELS .........................................................3-4
REAR PANELS ......................................................... 5-12
REMOTE CONTROL PANELS ..................................... 13
SPECIFICATIONS / 参考仕様 ................................. 14-18
INTERNAL VIEW .......................................................... 19
SERVICE PRECAUTIONS / サービス時の注意事項 ..... 19
DISASSEMBLY PROCEDURES / 分解手順 ...........20-23
UPDATING FIRMWARE /
ファームウェアのアップデート ............................24-28
SELF-DIAGNOSTIC FUNCTION /
ダイアグ（自己診断機能） .....................................29-60
POWER AMPLIFIER ADJUSTMENT /
パワーアンプ調整 .......................................................61
1 0 1 2 6 1
RX-V375/HTR-3066/
Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components, and failure of the product to perform as specifi ed. For these reasons, we advise
all Yamaha product owners that any service required should be performed by an authorized Yamaha Retailer or the
appointed service representative.
The presentation or sale of this manual to any individual or fi rm does not constitute authorization, certifi cation or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
Copyright (c) Yamaha Corporation All rights reserved.
This manual is copyrighted by Yamaha and may not be copied or
redistributed either in print or electronically without permission.
AV RECEIVER
HTR-2866
SERVICE MANUAL
IMPORTANT NOTICE
DISPLAY DATA .......................................................62-63
IC DATA ...................................................................64-71
BLOCK DIAGRAMS ................................................ 73-74
WIRING DIAGRAM .......................................................75
PRINTED CIRCUIT BOARDS ................................. 76-93
PIN CONNECTION DIAGRAMS ...................................94
SCHEMATIC DIAGRAMS ..................................... 95-106
REPLACEMENT PARTS LIST ............................ 107-121
REMOTE CONTROL ........................................... 122-126
CONFIGURING THE SYSTEM SETTINGS ................. 127
システム設定を変更する ............................................. 128
FIRMWARE UPDATING PROCEDURE .............. 129-132
ファームウェア更新手順 ..................................... 133-136
P.O.Box 1, Hamamatsu, Japan
'13.03