Yamaha RX-V373 User manual

101234
SERVICE MANUAL
IMPORTANT NOTICE
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 specifically YAMAHA Products, are already known
and understood by the users, and have therefore not been restated.
WARNING: 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 specified. 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.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
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. Modifications are, therefore, inevitable and
specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING: 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).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
AV RECEIVER
RX-V373/HTR-3065
P.O.Box 1, Hamamatsu, Japan
■CONTENTS
TO SERVICE PERSONNEL ............................................2
FRONT PANELS .........................................................3–4
REAR PANELS ...........................................................5–9
REMOTE CONTROL PANELS ..................................... 10
SPECIFICATIONS / 参考仕様 ................................. 11–16
INTERNAL VIEW .......................................................... 17
SERVICE PRECAUTIONS / サービス時の注意事項 ..... 17
DISASSEMBLY PROCEDURES / 分解手順 ........... 18–21
UPDATING FIRMWARE /
ファームウェアのアップデート ..............................22–26
SELF-DIAGNOSTIC FUNCTION /
ダイアグ（自己診断機能）
.......................................27–52
DISPLAY DATA .......................................................53–54
IC DATA ...................................................................55–65
BLOCK DIAGRAMS ................................................66–67
PRINTED CIRCUIT BOARDS .................................68–81
PIN CONNECTION DIAGRAMS ...................................82
SCHEMATIC DIAGRAMS .......................................83–92
REPLACEMENT PARTS LIST .............................. 93–105
REMOTE CONTROL ............................................106–110
CONFIGURING THE SYSTEM SETTINGS ..................111
システム設定を変更する
............................................. 112
'12.03
Copyright © 2012 All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
Note:
When the following parts are replaced, the model name and destination MUST be written to the back-up IC (EEPROM:
IC221 on DIGITAL P.C.B.) to have proper operation. (For details, refer to “22 SOFT SWITCH” menu of the self-
diagnostic function.)
注意：
下記の部品を交換した場合、正常動作のためにモデル名と仕向け先をバックアップ IC（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 “22.SOFTSWITCH” メニューを参照してください。）
• DIGITAL P.C.B.
• EEPROM: IC221 on DIGITAL P.C.B.
RX-V373/HTR-3065

This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive
harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or
expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.
1. Critical Components Information
Components having special characteristics are marked ⚠and
must be replaced with parts having specifications equal to those
originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
• Meter impedance should be equivalent to 1500 ohms shunted
by 0.15 μF.
■TO SERVICE PERSONNEL
• Leakage current must not exceed 0.5mA.
• Be sure to test for leakage with the AC plug in both polarities.
WARNING: CHEMICAL CONTENT NOTICE!
For U model
“CAUTION”
“F1501: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 6A,
125V FUSE.”
For C model
CAUTION
F1501: REPLACE WITH SAME TYPE 6A, 125V FUSE.
ATTENTION
F1501: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 6A, 125V.
WALL
OUTLET EQUIPMENT UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
本機に搭載されているすべての基板およびハンダ付けに
よる接合部は無鉛ハンダでハンダ付けされています。
無鉛ハンダにはいくつかの種類がありますが、修理時に
は下記のような無鉛ハンダの使用を推奨します。
󱾁 Sn+Ag+Cu（錫+銀+銅）
󱾁 Sn+Cu（錫 + 銅）
󱾁 Sn+Zn+Bi（錫 + 亜鉛 + ビスマス）
注意：
無鉛ハンダの融点温度は通常の鉛入りハンダに比べ 30 〜
40℃程度高くなっていますので、それぞれのハンダに合っ
たハンダごてをご使用ください。
All of the P.C.B.s installed in this unit and solder joints are
soldered using the lead free solder.
Among some types of lead free solder currently available,
it is recommended to use one of the following types for
the repair work.
• Sn + Ag + Cu (tin + silver + copper)
• Sn + Cu (tin + copper)
• Sn + Zn + Bi (tin + zinc + bismuth)
Caution:
As the melting point temperature of the lead free solder
is about 30°C to 40°C (50°F to 70°F) higher than that of
the lead solder, be sure to use a soldering iron suitable
to each solder.
About lead free solder / 無鉛ハンダについて
2
RX-V373/HTR-3065
RX-V373/HTR-3065

■FRONT PANELS
RX-V373 (U, C, R, K, A, B, G, F, L, S, H, J models)
RX-V373 (T model)
J model
U, C, R, K, A, B, G, F, L, S, H models
3
RX-V373/HTR-3065
RX-V373/HTR-3065

HTR-3065 (U, C, R, K, A, B, G, F, L, S, H models)
HTR-3065 (T model)
4
RX-V373/HTR-3065
RX-V373/HTR-3065

■REAR PANELS
RX-V373 (U, C models)
RX-V373 (R, S models)
RX-V373 (T model)
5
RX-V373/HTR-3065
RX-V373/HTR-3065

RX-V373 (K model)
RX-V373 (A model)
RX-V373 (B, G, F models)
6
RX-V373/HTR-3065
RX-V373/HTR-3065

RX-V373 (L, H models)
RX-V373 (J model)
HTR-3065 (U, C models)
7
RX-V373/HTR-3065
RX-V373/HTR-3065

HTR-3065 (K model)
HTR-3065 (R, S models)
HTR-3065 (T model)
8
RX-V373/HTR-3065
RX-V373/HTR-3065

HTR-3065 (A model)
HTR-3065 (B, G, F models)
HTR-3065 (L, H models)
9
RX-V373/HTR-3065
RX-V373/HTR-3065

■REMOTE CONTROL PANELS
RAV463
(U, C, R, K,
B, G, F, L, S, H, J models)
RAV462
(T model)
RAV461
(A model)
Remote control sheet
10
RX-V373/HTR-3065
RX-V373/HTR-3065

■Audio Section / オーディオ部
Rated Output Power (Power Amp. Section) /
定格出力（パワーアンプ部）
(1 kHz, 0.9 % THD)
– 1 channel driven –
U, C models (8 ohms)
FRONT L/R ................................................................ 100 W/ch
CENTER .......................................................................... 100 W
SURROUND L/R ........................................................ 100 W/ch
R, T, K, A, B, G, F, L, S, H, J models (6 ohms)
FRONT L/R ................................................................ 100 W/ch
CENTER .......................................................................... 100 W
SURROUND L/R ........................................................ 100 W/ch
– 2 channels driven simultaneously –
U, C models (8 ohms)
FRONT L/R ...........................................................85 W + 85 W
CENTER ............................................................................ 85 W
SURROUND L/R ...................................................85 W + 85 W
(20 Hz to 20 kHz, 0.08 % THD)
– 2 channels driven simultaneously –
U, C models (8 ohms)
FRONT L/R ...........................................................70 W + 70 W
R, T, K, A, B, G, F, L, S, H, J models (6 ohms)
FRONT L/R ...........................................................65 W + 65 W
Maximum Effective Output Power / 実用最大出力 (JEITA)
(1 kHz, 10 % THD, 6 ohms / 1 channel driven)
[R, T, K, L, S, H, J models]
FRONT L/R ......................................................................... 135 W/ch
CENTER .................................................................................. 135 W
SURROUND L/R ................................................................ 135 W/ch
Dynamic Power Per Channel / ダイナミックパワー (IHF)
FRONT L/R drive
U, C models
(8 / 6 / 4 / 2 ohms) .................................. 110 / 130 / 160 / 180 W
R, T, K, A, B, G, F, L, S, H, J models
(6 / 4 / 2 ohms) ................................................ 110 / 130 / 150 W
Dynamic Headroom [U, C models]
8 ohms ..................................................................................0.23 dB
Damping Factor / ダンピングファクタ (20 Hz to 20 kHz, 8 ohms)
FRONT L/R to SPEAKER ................................................ 120 or more
Input Sensitivity/Input Impedance / 入力感度／入力インピーダンス
(1 kHz, 100 W/6 ohms)
AV5 etc. ............................................................ 200 mV / 47 k-ohms
Maximum Input Signal / 最大許容入力 (1 kHz, 0.5 % THD)
AV5 etc. (EFFECT ON) .............................................................. 2.3 V
Output Level/Output Impedance / 出力電圧／出力インピーダンス
AV OUT ............................................................ 200 mV / 1.2 k-ohms
SUBWOOFER ......................................................... 1 V / 1.2 k-ohms
Headphone Jack Rated Output/Output Impedance /
ヘッドホン出力／出力インピーダンス (1 kHz, 50 mV, 8 ohms)
AV5 etc. input ..................................................... 100 mV / 470 ohms
Frequency Response / 再生周波数帯域 (10 Hz to 100 kHz)
AV5 etc., FRONT ..................................................................0 / -3 dB
Signal to Noise Ratio / 信号対雑音比 (IHF-A network)
AV5, etc. (DIRECT) to SP OUT (Input shorted 250 mV)
.............................................................................. 100 dB or more
■SPECIFICATIONS /
参考仕様
Residual Noise / 残留ノイズ (IHF-A Network)
FRONT L/R to SP OUT ................................................150 μV or less
Channel Separation / チャンネルセパレーション
AV5, etc. (Input 5.1 k-ohms shorted)
1 kHz / 10 kHz ............................... 60 dB or more / 45 dB or more
Volume Control / 可変範囲／ステップ
......................................... MUTE / -80 dB to +16.5 dB / 0.5 dB step
Tone Control Characteristics / トーンコントロール特性
FRONT L/R
Bass
Boost/Cut ...................................... ±6 dB / 0.5 dB step, at 50 Hz
Turnover frequency ..........................................................350 Hz
Treble
Boost/Cut .....................................±6 dB / 0.5 dB step, at 20 kHz
Turnover frequency ......................................................... 3.5 kHz
Filter Characteristics / フィルタ特性
FRONT, CENTER, SURROUND small (H.P.F.)
.................... fc=40/60/80/90/100/110/120/160/200 Hz, 12 dB/oct.
SUBWOOFER small (L.P.F.)
.................... fc=40/60/80/90/100/110/120/160/200 Hz, 24 dB/oct.
■Video Section / ビデオ部
Video Signal Type / ビデオ信号方式
U, C, R, K, S, J models ............................................................NTSC
T, A, B, G, F, L, H models ............................................................PAL
Composite Video Signal Level / コンポジットビデオ信号
...............................................................................1 Vp-p / 75 ohms
Component Video Signal Level / コンポーネントビデオ信号
Y .............................................................................1 Vp-p / 75 ohms
Cb/Cr ..................................................................0.7 Vp-p / 75 ohms
D4 Video Signal / D4 ビデオ信号 [J model]
Y .............................................................................1 Vp-p / 75 ohms
Cb/Cr ..................................................................0.7 Vp-p / 75 ohms
Video Maximum Input Level / ビデオ最大許容入力
(VIDEO Conversion Off)
............................................................................... 1.5 Vp-p or more
Video Signal to Noise Ratio / ビデオ信号対雑音比
................................................................................... 50 dB or more
Monitor Out Frequency Response / モニター出力周波数帯域
(VIDEO Conversion Off)
Component video signal level /コンポーネントビデオ信号
....................................................................5 Hz to 60 MHz, -3 dB
D4 video signal / D4 ビデオ信号 [J model]
.....................................................................5 Hz to 60 MHz, -3 dB
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RX-V373/HTR-3065

U .......................U.S.A. model
C .................Canadian model
R ....................General model
T .................... Chinese model
K .....................Korean model
A ................Australian model
B ......................British model
G .................European model
F .................... Russian model
L .................Singapore model
S ...................Brazirian model
H ..........................Thai model
J .................. Japanese model
Manufactured under license from Dolby Laboratories. Dolby, Pro Logic and
the double-D symbol are trademarks of Dolby Laboratories.
ドルビーラボラトリーズからの実施権に基づき製造されています。「ドルビー」、
「PROLOGIC」およびダブル D 記号 はドルビーラボラトリーズの商標です。
DTS-HD, the Symbol, & DTS-HD and the Symbol together are registered
trademarks of DTS, Inc. Product includes software. © DTS, Inc. All Rights
Reserved.
DTS-HD および記号は DTS 社の登録商標です。また、DTS-HD ロゴは DTS 社の
商標です。製品にはソフトウェアを含みます。著作権 DTS 社。不許複製。
■FM Section / FM部
Tuning Range / 受信周波数範囲
U, C models .........................................................87.5 to 107.9 MHz
R, L, S, H models .............87.5 to 108.0 MHz / 87.50 to 108.00 MHz
T, K, A, B, G, F models .................................... 87.50 to 108.00 MHz
J model ..................................................................76.0 to 90.0 MHz
50 dB Quieting Sensitivity / 50dBSN 感度 (IHF)
(1 kHz, 100 % MOD.)
Mono ......................................................................... 3 μV (20.8 dBf)
Signal to Noise Ratio / 信号対雑音比 (IHF)
Mono ........................................................................................72 dB
Stereo ......................................................................................70 dB
Harmonic Distortion / 歪率 (1 kHz)
Mono ........................................................................................ 0.3 %
Stereo ...................................................................................... 0.5 %
Antenna Input / アンテナ入力
....................................................................... 75 ohms unbalanced
■AM Section / AM部
Tuning Range / 受信周波数範囲
U, C models ........................................................... 530 to 1,710 kHz
R, L, S, H models .....................530 to 1,710 kHz / 531 to 1,611 kHz
T, K, A, B, G, F, J models ....................................... 531 to 1,611 kHz
Antenna / アンテナ
..................................................................................... Loop antenna
■General / 総合
Power Supply / 電源電圧
U, C models ............................................................ AC 120 V, 60 Hz
R, S model ...................................AC 110–120/220–240 V, 50/60 Hz
T model ................................................................... AC 220 V, 50 Hz
K model .................................................................. AC 220 V, 60 Hz
A model .................................................................. AC 240 V, 50 Hz
B, G, F models ........................................................ AC 230 V, 50 Hz
L, H models ............................................... AC 220–240 V, 50/60 Hz
J model .............................................................. AC 100 V, 50/60 Hz
Power Consumption / 消費電力
U, C models ..............................................................250 W / 320 VA
R, T, K, A, B, G, F, L, S, H models ........................................... 250 W
J model ................................................................................... 175 W
Standby Power Consumption (reference data) /
待機時消費電力（参考値）
U, C, T, K, A, B, G, F, L, H, J models ............................0.3 W or less
R, S models ..................................................................0.5 W or less
Maximum Power Consumption [R, L, S, H models]
................................................................................................ 470 W
Dimensions (W x H x D) / 寸法（幅 × 高さ × 奥行き）
..................................... 435 x 151 x 315 mm (17-1/8" x 6" x 12-3/8")
Weight / 質量
............................................................................... 7.5 kg (16.5 lbs.)
Finish / 仕上げ
[RX-V373]
T model .................................................................GD (Gold color)
U, C, R, T, K, A, B, G, F, L, S, H, J models ............BL (Black color)
R, K, B, G, F, L, H models ................................. TI (Titanium color)
[HTR-3065]
T model .................................................................GD (Gold color)
U, C, R, T, K, A, B, G, F, L, S, H models ................BL (Black color)
G model ............................................................ TI (Titanium color)
Accessories / 付属品
Remote control ..............................................................................x 1
Battery (R03, AAA, UM-4) .............................................................x 2
FM antenna (1.4 m) ......................................................................x 1
AM antenna (1.3 m) ......................................................................x 1
YPAO microphone (6.0 m) ............................................................x 1
Remote control sheet (T model) ...................................................x 1
*Specifications are subject to change without notice.
※ 参考仕様および外観は、製品の改良のため予告なく変更すること
があります。
iPhone, iPod, iPod classic, iPod nano and iPod touch are trademarks of
Apple Inc., registered in the U.S. and other countries.
iPhone、iPod、iPodclassic、iPodnano、iPodtouch は、米国およびその他
の国々で登録されている AppleInc. の商標です。
“HDMI,” the “HDMI” logo and “High-Definition Multimedia Interface” are
trademarks, or registered trademarks of HDMI Licensing LLC.
HDMI、HDMI ロゴ、および High-DefinitionMultimediaInterface は、HDMI
Licensing,LLC の商標または登録商標です。
12
RX-V373/HTR-3065
RX-V373/HTR-3065

Front view
Top view
435 (17-1/8")
315 (12-3/8") 274 (10-3/4")
170 (6-5/8")
58
(2-1/4")
46 (1-3/4")
23 (7/8")
18
(3/4")
130 (5-1/8")21
(7/8") 151 (6")
335 (13-1/4")
ø 60
50
(2")
“SILENT CINEMA” is a trademark of Yamaha Corporation.
「サイレントシネマ™ SILENTCINEMA™」はヤマハ株式会社の登録商標です。
“x.v.Color” is a trademark of Sony Corporation.
「x.v.Color」は、ソニー株式会社の商標です。 AAC ロゴマーク はドルビーラボラトリーズの商標です。
•DIMENSIONS
Unit: mm (inch)
単位：mm（インチ）
13
RX-V373/HTR-3065
RX-V373/HTR-3065

Parameter
Decode Type Panorama: Off / On, [Off] Center Width: 0 to 7, [3] Dimension: -3 to +3, [0] Center Image: 0.0 to 1.0, [0.3]
Category Program
MOVIE Standard
Spectacle
Sci-Fi
Adventure
Drama
Mono Movie
Sports
Action Game
Roleplaying Game
MUSIC Hall in Munich
Hall in Vienna
Chamber
Cellar Club
The Roxy Theatre
The Bottom Line
Music Video
2ch Stereo
5ch Stereo
SUR. DECODE ●
*1
STRAIGHT
ENHANCER Enhancer On / Off
●: Setting is possible
設定可
•SELECT MENU
Sound field parameters
*1 Decode Type
Pro Logic
PLII Movie
Decode Type
PLII Music
PLII Game
Neo: 6 Cinema
Neo: 6 Music
14
RX-V373/HTR-3065
RX-V373/HTR-3065

•SET MENU TABLE
MAIN
MENU SUB-MENU PARAMETER VALUE [INITIAL VALUE]
Speaker Configuration Subwoofer [Use] / None
Front [Small] / Large
Center [Small] / Large / None
Surround [Small] / Large / None
Crossover 40 Hz / 60 Hz / [80 Hz] / 90 Hz / 100Hz / 110 Hz / 120 Hz / 160 Hz /
200 Hz
Subwoofer Phase [Normal] / Reverse
Extra Bass [Off] / On
Distance Unit Feet / Meter
Front L 0.30 to 24.00 m, [3.05 m], 0.05 m step
Front R 1.0 to 80.0 ft, [10.0 ft], 0.2 ft step
Center 0.30 to 24.00 m, [2.60 m], 0.05 m step
1.0 to 80.0 ft, [8.6 ft], 0.2 ft step
Surround L 0.30 to 24.00 m, [2.45 m], 0.05 m step
Surround R 1.0 to 80.0 ft, [8.0 ft], 0.2 ft step
Subwoofer 0.30 to 24.00 m, [3.05 m], 0.05 m step
1.0 to 80.0 ft, [10.0 ft], 0.2 ft step
Level Front L -10.0 to +10.0 dB, [0.0 dB], 0.5 dB step
Front R
Center
Surround L -10.0 to +10.0 dB, [-1.0 dB], 0.5 dB step
Surround R
Subwoofer -10.0 to +10.0 dB, [0.0 dB], 0.5 dB step
Equalizer EQ Select PEQ / [GEQ] / Off
*“PEQ” is available only when the YPAO has been performed
“PEQ” は自動測定（YPAO）を行った場合のみ選択可能
GEQ Edit Front L 63 Hz ···········||···········
Front R 160 Hz ···········||···········
Center 400 Hz ···········||···········
Surround L 1 kHz ···········||··········· -6.0 to +6.0 dB, [0 dB], 0.5 dB step
Surround R 2.5 kHz ···········||···········
6.3 kHz ···········||···········
16 kHz ···········||···········
Test Tone [Off] / On
HDMI Configuration HDMI Control [Off] / On
Audio Output Amp Off / [On]
HDMI OUT (TV) [Off] / On
*This setting is available only when “HDMI Control” is set to “Off”.
“HDMI Control” が“Off” の場合のみ設定可能
TV Audio Input AV1 / AV2 / AV3 / [AV4] / AV5 / AUDIO1 / AUDIO2
Standby Sync Off / On / [Auto]
ARC Off / [On]
SCENE BD / DVD Off / [On]
TV
CD [Off] / On
RADIO
15
RX-V373/HTR-3065
RX-V373/HTR-3065

MAIN
MENU SUB-MENU PARAMETER VALUE [INITIAL VALUE]
Sound DSP Parameter Panorama [Off] / On
Center Width 0 to 7, [3]
Dimension -3 to +3, [0]
Center Image 0.0 to 1.0, [0.3]
Lipsync Select Manual / [Auto]
Adjustment 0 to 250 ms, [0 ms], 1 ms step
Volume Dynamic Range [Maximum] / Standard / Min/Auto
Max Volume -30.0 to +15.0 dB / +16.5 dB (Maximum volume), [+16.5 dB], 5.0 dB step
Initial Volume [Off] / Mute / -80.0 to +16.5 dB, 0.5 dB step
ECO Auto Power Down U, C, R, T, K, A, L, S, H, J models: [Off] / 2 hours / 4 hours / 8 hours /
12 hours
B, G, F models: Off / 2 Hours / 4 Hours / [8 Hours] / 12 Hours
ECO Mode [Off] / On
Function Input Rename Input sources: HDMI1 / HDMI2 / HDMI3 / HDMI4 / AV1 / AV2 / AV3 /
AV4 / AV5 / AUDIO1 / AUDIO2 / USB / V-AUX
Input is possible to 9 characters
Input possible Character type
Capital: A to Z
Small: a to z
Figure: 0 to 9
Symbols: # * + , - etc.
Space
Preset name select: Blu-ray / DVD / SetTopBox / Game / TV / DVR /
CD / CD-R / Satellite / VCR / Tape / MD / PC /
iPod / HD DVD
Dimmer -4 to 0 (higher to brighten), [-2]
Memory Guard [Off] / On
Language English (English) / Français (Franch) / Deutsch (German) /
(U, C, R, T, K, A, B, G, F, L, S, H models) Español (Spanish) / РУccкий (Russian) / 中文 (Chinese)
16
RX-V373/HTR-3065
RX-V373/HTR-3065

■SERVICE PRECAUTIONS / サービス時の注意事項
Safety measures
• Some internal parts in this product contain high voltages
and are dangerous.
Be sure to take safety measures during servicing, such
as wearing insulating gloves.
• Note that the capacitors indicated below are dangerous
even after the power is turned off because an electric
charge remains and a high voltage continues to exist
there.
Before starting any repair work, connect a discharging
resistor (5 k-ohms/10 W) to the terminals of each
capacitor indicated below to discharge electricity.
The time required for discharging is about 30 seconds
per each.
C46 and C47 on MAIN (1) P.C.B.
C1501 on OPERATION (3) P.C.B.
For details, refer to “PRINTED CIRCUIT BOARDS”.
■INTERNAL VIEW
安全対策
・ この製品の内部には高電圧部分があり危険です。修理
の際は、絶縁性の手袋を使用するなどの安全対策を
行ってください。
・ 下記のコンデンサには電源を OFF にした後も電荷が残
り、高電圧が維持されており危険です。
修理作業前に放電用抵抗（5k Ω /10W）を下記の各コ
ンデンサの端子間に接続して放電してください。
放電所用時間は各々約 30 秒間です。
MAIN（1）P.C.B. の C46、C47
OPERATION（3）P.C.B. の C1501
詳しくは “PRINTEDCIRCUITBOARDS” を参照してくだ
さい。
OPERATION (3) P.C.B.
MAIN (3) P.C.B. (R, S models)
MAIN (1) P.C.B.
AM/FM TUNER
DIGITAL P.C.B.
MAIN (2) P.C.B.
OPERATION (4) P.C.B.
MAIN (4) P.C.B.
OPERATION (9) P.C.B.
OPERATION (2) P.C.B.
OPERATION (8) P.C.B.
POWER TRANSFORMER
OPERATION (7) P.C.B.
OPERATION (1) P.C.B.
OPERATION (6) P.C.B.
OPERATION (5) P.C.B.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
911
16
12 10 8
1
13 14 15
3524 6 7
17
RX-V373/HTR-3065
RX-V373/HTR-3065

Fig. 1
(Remove parts in the order as numbered.)
Disconnect the power cable from the AC outlet.
1. Removal of Top Cover
a. Remove 5 screws (①) and 4 screws (②). (Fig. 1)
b. Lift the rear of the top cover to remove it. (Fig. 1)
2. Removal of Front Panel Unit
a. Remove 7 screws (③). (Fig. 1)
b. Remove CB166, CB193, CB221 and CB281. (Fig. 1)
c. Unlock and remove CB136. (Fig. 1)
d. Release hook, and then remove the front panel unit.
(Fig. 1)
（番号順に部品を外してください。）
AC 電源コンセントから、電源コードを抜いてください。
1. トップカバーの外し方
a. ①のネジ 5 本、②のネジ 4 本を外します。（Fig.1）
b. トップカバーの後部を持ち上げ、外します。（Fig.1）
2. フロントパネルユニットの外し方
a. ③のネジ 7 本を外します。（Fig.1）
b. CB166、CB193、CB221、CB281を外します。（Fig.1）
c. ロックを外し、CB136を外します。（Fig.1）
d. フック 1 箇所を外し、フロントパネルユニットを外し
ます。（Fig.1）
■DISASSEMBLY PROCEDURES / 分解手順
Connected
接続
Connected
接続
Cable
ケーブル
Cable
ケーブル
Unlock the connector
コネクター ロック解 除
Remove the cable
ケーブルを外す
Remove CB136 and CB262
Connect CB136 and CB262
1
1 1
2
2
Lock the connector
コネクター ロック
Insert the cable
ケーブルを差し込む
1
1 1
2
2
①
②
②
③
③
③
Top cover
トップカバー
Front panel unit
フロントパネルユニット
Hook
CB166
CB193
CB221
CB281
CB136
18
RX-V373/HTR-3065
RX-V373/HTR-3065

Fig. 3
Fig. 2
3. Removal of DIGITAL P.C.B.
a. Remove CB222 and CB223 (Fig. 2)
b. Unlock and remove CB262. (Fig. 2)
c. Remove screw (④). (Fig. 2)
d. Remove 2 screws (⑤) and 5 screws (⑥). (Fig. 3)
e. Remove the DIGITAL P.C.B. which is connected
directly to the OPERATION (4) P.C.B. with board-to-
board connectors. (Fig. 2)
4. Removal of OPERATION (4) P.C.B.
a. Remove CB194. (Fig. 2)
b. Remove screw (⑦). (Fig. 2)
c. Remove screw (⑧). (Fig. 3)
d. Remove the OPERATION (4) P.C.B. which is
connected directly to the MAIN (1) P.C.B. with board-
to-board connectors. (Fig. 2)
3. DIGITALP.C.B. の外し方
a. CB222、CB223 を外します。（Fig.2）
b. ロックを外し、CB262 を外します。（Fig.2）
c. ④のネジ 1本を外します。（Fig.2）
d. ⑤のネジ 2 本、⑥のネジ 5 本を外します。（Fig.3）
e. DIGITALP.C.B.を外します。ただし、DIGITALP.C.B. は
OPERATION（4）P.C.B. に基板対基板コネクターで直
接接続されています。（Fig.2）
4. OPERATION（4）P.C.B. の外し方
a. CB194 を外します。（Fig.2）
b. ⑦のネジ 1 本を外します。（Fig.2）
c. ⑧のネジ 1 本を外します。（Fig.3）
d. OPERATION（4）P.C.B. を外します。ただし、
OPERATION（4）P.C.B. は MAIN（1）P.C.B. に基板対基
板コネクターで直接接続されています。（Fig.2）
④
⑦
DIGITAL P.C.B.
OPERATION (4) P.C.B.
DIGITAL P.C.B.
CB263
CB223
CB222
OPERATION (4) P.C.B.
MAIN (1) P.C.B.
CB191
CB192
CB195
CB196
CB21
CB22 Board-to-board
connectors
基板対基板コネクター
Board-to-board
connectors
基板対基板コネクター
CB223
CB222
CB262
CB264
CB262
CB194
⑨
⑤⑥⑤
⑧
19
RX-V373/HTR-3065
RX-V373/HTR-3065

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. (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.
Fig. 4
DIGITAL P.C.B.
OPERATION (4) P.C.B.
P.C.B. CHECKING JIG
P.C.B.チェック用冶具
CB263
CB264
CB196
CB195
Rubber sheet and cloth
ゴムシートと布 ST201
Ground lead
アース線 Chassis
シャーシ
DIGITALP.C.B. をチェックする場合には：
・ 本機の上にゴムシートと布を敷き、その上に DIGITAL
P.C.B. を置きます。（Fig.4）
・ DIGITALP.C.B. の ST201 のアースをリード線でシャー
シに接続してください。（Fig.4）
・ 外したケーブル（コネクター）をすべて接続しま
す。ただし下記のコネクター間を接続するには
P.C.B. チェック用冶具（部品番号 :WW483800）を使
用してください。
DIGITALP.C.B.のCB263‒OPERATION(4)P.C.B.の
CB196
DIGITALP.C.B.のCB264‒OPERATION(4)P.C.B.の
CB195
・ フラットケーブルを接続する際、極性に注意してく
ださい。
20
RX-V373/HTR-3065
RX-V373/HTR-3065