Yamaha DVD-S840 User manual

DVD-S840
100850
P.O.Box 1, Hamamatsu, Japan
■CONTENTS
TO SERVICE PERSONNEL .......................................... 2
PREVENTION OF ELECTRO STATIC DISCHARGE... 3~4
LOCALE MANAGEMENT INFORMATION ................... 4
FRONT PANEL .............................................................. 4
REAR PANELS .............................................................. 5
REMOTE CONTROL PANEL ........................................ 5
SPECIFICATIONS / 参考仕様 ........................................ 6
DISASSEMBLY PROCEDURES AND
SERVICE POSITION /
分解手順とサービスポジション .. 7~13
OPTICAL PICKUP SELF-DIAGNOSIS AND REPLACEMENT
PROCEDURE / 光ピックアップの故障診断と交換手順 .......
14~17
SELF-DIAGNOSIS FUNCTION AND SERVICE MODES
/ 自己診断機能とサービスモード ....................................
18~29
ASSEMBLING AND DISASSEMBLING THE MECHANISM
UNIT / メカニズムユニットの分解組立 ...........................
30~40
ADJUSTMENT / 調整 ............................................. 41~44
ABBREVIATIONS / 略語表 .................................... 45~47
BLOCK DIAGRAM................................................. 48~53
INTERCONNECTION SCHEMATIC DIAGRAM.......... 54
PRINTED CIRCUIT BOARD .................................. 55~60
SCHEMATIC DIAGRAM ........................................ 61~73
VOLTAGE CHART / 電圧表 ......................................... 74
PARTS LIST........................................................... 75~85
SERVICE MANUAL
DVD PLAYER
DVD-S840
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.
本资料由ＯＫＸＩＡ视听皮带资源库ｗｗｗ．ｏｋｘｉａ．ｃｎ提供

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DVD-S840
WALL
OUTLET EQUIPMENT UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and
possibly other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA-
SON 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.
WARNING: Laser Safety
This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may
cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be used during
servicing of the unit.
1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from
the laser pick-up unit at all times. Do not stare at the laser beam at any time.
2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.
3) CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
Laser Emitting conditions:
1) When the Top Cover is removed, and the "STANDBY/ON" SW is turned to the "ON" position, the laser component will
emit a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through
the lens of the laser pick-up unit. Do not attempt any servicing during this period!
If no disc is detected, the laser will stop emitting the beam. When a disc is set, you will not be exposed to any laser
emissions.
2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factory
prior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this
manual.
Adjustment of this control can increase the laser emission level from the device.
■TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked s
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 ohm shunted
by 0.15µF.
●Leakage current must not exceed 0.5mA.
●Be sure to test for leakage with the AC plug in both polarities.
“CAUTION”
“F1001: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.6A, 125V FUSE.”
CAUTION
F1001: REPLACE WITH SAME TYPE 1.6A, 125V FUSE.
ATTENTION
F1001: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.6A, 125V.

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DVD-S840
VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASER-
SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING!: OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN.
WARNING
The use of optical instruments with this product will increase eye hazard.
Repair handling should take place as much as possible with a disc loaded inside the player
■PREVENTION OF ELECTRO STATIC DISCHARGE
The laser diode in the traverse unit (optical pickup) may be damaged due to static electricity from clothes or the human body.
Use caution to prevent electro static damage when servicing or handling the laser diode.
1. Grounding for Electro Static Damage Prevention
Some devices, such as the DVD player, use an optical pickup (laser diode) that will be damaged by static electricity in the
working environment. Only attempt service after ensuring that all grounding procedures have been completed.
1. Worktable grounding
Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed.
2. Human body grounding
Use an anti-static wrist strap to discharge the static electricity from your body.
1M Conductive material
(sheet) or iron sheet
Anti-static wrist strap
U model
All model
Laser Diode Properties
Type: Semiconductor laser GaAlAs
Wave length: 658 nm (DVD)
790 nm (VCD/CD)
Output Power: CLASS IIa 1mW (DVD)
CLASS I1mW (VCD/CD)

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■FRONT PANEL
2. Handling of the Optical Pickup
1. To prevent damage to the optical pickup replacement parts during transportation and before installation, both ends of the
laser diode are short-circuited. After installing the new part, remove the short circuit according to the correct procedure in
this service manual.
2. Do not use a tester to check the laser diode in the optical pickup. The power supply in the tester will damage the laser
diode.
3. Handling Precautions for the Traverse Unit (Optical Pickup)
1. Handle the traverse unit (optical pickup) gently, as it is an extremely high-precision assembly.
2. The flexible cable lines may break if an excessive force is applied to it. Use caution when handling the cable.
3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor.
1
2
4
2
5
5
4
2
6
3
5
■LOCALE MANAGEMENT INFORMATION
Locale Management Information : This DVD player is designed and manufactured to respond to the Locale Management
Information that is recorded on the DVD disc. If the Locale number described on the DVD disc does not correspond to the
Locale number of this DVD player, this DVD player cannot play this disc.
This product incorporates copyright protection
technology that is protected by method claims of
certain U.S. patents and other intellectual
property rights owned by Macrovision Corporation
and other rights owners. Use of this copyright
protection technology must be authorized by
Macrovision Corporation, and is intended for
home and other limited viewing uses only unless
otherwise authorized by Macrovision Corporation.
Reverse engineering or disassembly is prohibited.

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DVD-S840
U model
J model
■REAR PANELS
■REMOTE CONTROL PANEL
ZOOM
SET UP
ON SCREEN RETURN
TOP MENU MENU
ENTER
PAUSESTOP
SKIP
PLAY
SLOW/
SEARCH
OPEN/CLOSE
POWER
CINEMA
SUB TITLE
PROG
A
- B
REPEAT
RANDOM
CANCEL
V.S.S.
V975640
AUDIO ANGLE
GROUP PAGE VIDEO OFF POS. MEMO.

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DVD-S840
●DIMENSIONS
435 (17-1/8")
60
(2-3/8")
258 (10-1/8")
Unit : mm (inch)
単位:mm（インチ）
■SPECIFICATIONS/参考仕様
Signal System / ビデオ信号方式:.......................... NTSC
Operating Temperature Range / 動作温度範囲: ... +5 to +35°C
Operating Humidity Range / 動作湿度範囲:
............ 5 to 90% RH (no condensation / 結露無し)
Discs Played / 再生可能ディスク [8 cm or 12 cm]:
(1) DVD-Audio
(2) DVD-Video
(3) DVD+RW/DVD+R
(4) DVD-R/DVD-RW (DVD-Video compatible)
(5) CD-Audio (CD-DA)
(6) Video CD
(7) CD-R/CD-RW (CD-DA, Video-CD formatted discs)
(8) MP3/WMA
•Maximum Number of Tracks and Groups Recognizable
/ 認識可能最大トラック＆グループ数:
........................................999 tracks and 99 groups
•Compatible Compression Rate / ビットレート:
....................between 32 kbps and 320 kbps (MP3)
.................. between 48 kbps and 192 kbps (WMA)
Video Output / ビデオ信号出力:
Output Level:........................................... 1 Vp-p (75 Ω)
Output Terminal: ............................ Pin jack (1 system)
S Video Output / Sビデオ信号出力:
Y Output Level: ....................................... 1 Vp-p (75 Ω)
C Output Level: ................................0.286 Vp-p (75 Ω)
Output Terminal: ........................ S terminal (1 system)
Component Video Output / コンポーネントビデオ出力:
Y Output Level: ....................................... 1 Vp-p (75 Ω)
PBOutput Level: ..................................0.7 Vp-p (75 Ω)
PROutput Level: ..................................0.7 Vp-p (75 Ω)
Output Connector:............................................ Pin jack
(Y: green, PB: blue, PR: red)
Number of Connectors:.................................. 1 system
Audio Output / オーディオ出力:
Output Level:............................... 2 Vrms (1 kHz, 0 dB)
Output Connector:............................................ Pin jack
Number of Connectors:
2 Channel: ................................................ 1 system
5.1-channel Discrete Output (5.1 Channel):......1 system
Audio Performance / 音声系:
(1) Frequency Response / 周波数特性:
• DVD (linear audio):....2 Hz–22 kHz (48 kHz sampling)
................................. 2 Hz–44 kHz (96 kHz sampling)
•DVD-Audio: .......2 Hz–88 kHz (192 kHz sampling)
•CD audio: ......................................... 2 Hz –20 kHz
(2) S/N Ratio / 信号対雑音比:
•CD audio: ....................................................115 dB
(3) Dynamic Range / ダイナミックレンジ:
•DVD (linear audio):......................................102 dB
•CD audio: ......................................................98 dB
(4) Total Harmonic Distortion / 全高調波歪率:
•CD audio: ................................................0.0025 %
Digital Audio Output / デジタルオーディオ出力:
Optical Digital Output:..........................Optical terminal
Coaxial Digital Output: ..................................... Pin jack
Pickup / ピックアップ:
Wave Length: .......................................658 nm/790 nm
Laser power: .................................. CLASS 2/CLASS 1
Power Supply / 電源電圧:
U model: ............................................. AC 120 V, 60 Hz
J model:.........................................AC 100 V, 50/60 Hz
Power Consumption / 消費電力:
U model: ................................................................11 W
J model:.................................................................11 W
Standby Power Consumption / 待機時消費電力:
.......................................................... approx. 1.5 W
Dimensions / 外形寸法 (W x H x D): ....... 435 x 60 x 258 mm
......................................(17-1/8" x 2-3/8" x 10-1/8")
Weight / 質量: .................................... 3.3 kg (7 lbs. 4 oz.)
Finish / 仕上げ:
Black color:...................................................... U model
Gold color: ........................................................ J model
Accessories / 付属品:
Remote Control, Batteries, Audio/Video Cable, Power
Cable
* Specifications are subject to change without notice
due to product improvements.
U ....... U.S.A. model J ....... Japanese model
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”and the double-D symbol are
trademarks of Dolby Laboratories.
“DTS”and “DTS Digital Surround”are registered
trademarks of Digital Theater Systems, Inc.

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DVD-S840
RearPanel
リアパネル
MODULEP.C.B.
モジュールP.C.B.
Tray
トレイ
MechanismUnit
メカニズムユニット
TopCover
トップカバー
FRONT1P.C.B.
/FRONT2P.C.B.
フロント1P.C.B.
／フロント2P.C.B.
TERMINALP.C.B.
/POWERP.C.B.
ターミナルP.C.B.
／パワーP.C.B.
FrontPanel
フロントパネル
INTERMEDIATEP.C.B.
中継P.C.B.
MechanismUnit
メカニズムユニット
INTERMEDIATEP.C.B.
中継P.C.B.
TERMINALP.C.B.
ターミナルP.C.B.
MODULEP.C.B.
モジュールP.C.B.
FRONT2P.C.B.
フロント2P.C.B.
FrontPanel
フロントパネル
FRONT1P.C.B.
フロント1P.C.B.
POWERP.C.B.
パワーP.C.B.
TopCover
トップカバー
■ DISASSEMBLY PROCEDURES AND SERVICE POSITION / 分解手順とサービスポジション
(Remove parts in the order as numbered.)
Disconnect the power cable from the AC outlet.
1. Disassembly Procedure
（番号順に部品を取り外してください。）
AC電源コンセントから、電源コードを抜いてください。
1. 分解手順
2. Casing Parts and P.C.B. Locations 2. P.C.B.配置図

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DVD-S840
MechanismUnit
メカニズムユニット
Gearforopeningthetray
トレイ引き出しギア
Cut/カット
Gear/ギア Screwdriver/ドライバー
<Gearjig>
〈ギア治具〉
3. Top Cover
Remove the screws. 3. トップカバー
ねじを外す。
4. トレイ
1. メカニズムユニットよりトレイ引き出しギアを外し、ド
ライバーに挿入し、ギア治具を準備する。
2. ギア治具をトレイ開閉穴に挿し込む。
3. ギア治具を反時計方向に回し、トレイをオープンさせ
る。
4. トレイ部よりトレイリッドを外す。
4. Tray
1. Remove the gear for opening the tray from the
mechanism unit and install it onto a screwdriver to
make a gear jig.
2. Insert the gear jig into the tray open/close hole.
3. Turn the gear jig counterclockwise to open the tray.
4. Remove the tray lid from the tray section.
Trayopen/closehole
トレイ開閉穴
Gearjig
ギア治具
Traylid
トレイリッド

DVD-S840
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DVD-S840
2. Release the tabs.
3. Remove the connectors.
5. Front Panel
1. Remove the screws. 5. フロントパネル
1. ねじを外す。
2. ツメを外す。
3. コネクターを外す。

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DVD-S840
6. Mechanism Unit
1. Remove the screws.
2. Remove the connectors.
3. Pull out the mechanism unit vertically.
7. INTERMEDIATE P.C.B.
1. Remove the screws.
2. Remove the solders.
3. Remove the connectors.
6. メカニズムユニット
1. ねじを外す。
2. コネクターを外す。
3. メカニズムユニットを垂直に引き抜く。
7. 中継P.C.B.
1. ねじを外す。
2. はんだを取り除く。
3. コネクターを外す。

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DVD-S840
9. FRONT 1 P.C.B. and FRONT 2 P.C.B.
1. Remove the screws (A).
2. Remove the Front Angle.
8. MODULE P.C.B.
1. Remove the screws.
2. Remove the connectors.
3. Squeeze each tab with pliers to pull out the MODULE
P.C.B. vertically.
3. Remove the screws (B).
8. モジュールP.C.B.
1. ねじを外す。
2. コネクターを外す。
3. ツメをニッパで押え込みながら、モジュールP.C.B.を垂
直に引き抜く。
9. フロント1P.C.B.、フロント2P.C.B.
1. ねじ（A）を外す。
2. フロントアングルを外す。
3. ねじ（B）を外す。

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10. Rear Panel
1. Remove the screws.
2. Release the tabs.
11. TERMINAL and POWER P.C.B.
1. Remove the connectors
2. Remove the screws.
3. Remove the FC1001A Solder.
10. リアパネル
1. ねじを外す。
2. ツメを外す。
11. ターミナルP.C.B.・パワーP.C.B.
1. コネクターを外す。
2. ねじを外す。
2. FC1001Aのはんだを取り除く。

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1TX946370 26 pins PS4201 (MODULE P.C.B.) –PP4301 (TERMINAL P.C.B.) JGS0098
2AAX16610 22 pins PS3201 (MODULE P.C.B.) –PP3201 (TERMINALP.C.B.) JGS0116
12.2. Service position of the INTERMEDIATE P.C.B.
12. Service Position
12.1. Service position of the MODULE P.C.B.
12.3. List of the Extension Cables
12. サービスポジション
12.1. モジュールP.C.B.サービスポジション
12.3. 延長ケーブル表
12.2. 中継P.C.B.サービスポジション

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■OPTICAL PICKUP SELF-DIAGNOSIS AND REPLACEMENT PROCEDURE
1.Self-diagnosis
An optical pickup self-diagnosis function and tilt adjustment check function have been included in this unit. When repairing,
use the following procedure for effective Self-diagnosis and tilt adjustment. Be sure to use the self-diagnosis function before
replacing the optical pickup when "NO DISC" is displayed. As a guideline, you should replace the optical pickup when the
value of the CD laser drive current is more than 55 (70 for DVD).
Note:
Press the STANDBY/ON button to turn on the power. Check the value within three minutes before the unit warms up.
(Otherwise, the result will be incorrect.)

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DVD-S840
NODISC表示が出る
スムーズに再生しない等
レーザー駆動電流の確認
光ピックアップ交換
交換後の
レーザー駆動電流の確認
・現在値が60（DVDの場合）、
45（CDの場合）以下なら
本体に書き込む
現在値が60（DVDの場合）、
45（CDの場合）を越える
場合は、新しい光りピック
に取り替える。
（原因）
交換時に静電気ダメージ
を与えた
光ピックあおり調整
あおり調整確認
機能を使う
現在値が
70（DVDの場合）、
55（CDの場合）を越える
現在値が
70（DVDの場合）、
55（CDの場合）以下
プレーヤーの初期化
直らない場合は、モジュール
P.C.B.をチェックする。
［確認方法］…ディスク無の状態で
・「 」と「 」（DVD）または
「 」（CD）を押しながら
リモコンより「 」を
送信する

［表示内容］
Ldd ○○○ ○○○（DVD）
Ldc ○○○ ○○○（CD）

◎光ピック故障診断機能を使う
     
工場出荷値 現在値
［書込方法］
・「 」と「 」を押しながら
リモコンより「 」を送信
する
［確認方法］…ディスク無の状態で
・「 」と「 」（DVD）または
「 」（CD）を押しながら
リモコンより「 」を
送信する
■光ピックアップの故障診断と交換手順
1. 故障診断
本機には、「光ピックアップ故障診断機能」と「あおり調整確認機能」を内蔵しております。修理時は、次の手法を用い効率的に故障
診断、およびあおり調整を実施ください。
「NODISC」表示が出る場合は光ピックアップを交換する前に「故障診断」を行います。CD用レーザー駆動電流の現在値が「55を
越える」場合（DVDは70）が光ピックアップ交換の目安になります。
注意
電源を入れてから3分以内に診断をしてください。（プレーヤーが温まると正確な診断ができません。）

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2. Cautions to Be Used Before Replacing the Optical Pickup Unit and Spindle Motor Assembly
Before replacing the optical pickup unit and spindle motor assembly, check the total usage hours for each of them. The
checking method is as follows:
Note: Each of these procedures should start with the unit stopped.
Cautions to be taken when replacing the optical
pickup
The optical pickup may become damaged due to static
electricity from the human body. Take proper protection
measures against static electricity before repairing the
parts around the optical pickup. (See the page describing
the PREVENTION OF ELECTRO STATIC DISCHARGE.)
1. Do not touch the areas around the laser diode and
actuator.
2. Do not judge the laser diode with a tester. (The tester
will damage the diode.)
3. It is recommended to use an anti-static soldering
iron for soldering or desoldering on the pickup.
(Recommended soldering iron) HAKKO ESD Product
4. Solder the land of the flexible cable in the optical
pickup.
Note:
•When using a soldering iron which is not anti-static,
short-circuit the terminal face of the flexible cable
with a clip. After that, short-circuit the land.
•After the repairing work is completed, remove the
solder according to the correct procedure shown in
this service manual.
Opticalpickupunit
Flexiblecable Groundwithaclip.

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DVD-S840
光ピックアップ交換時のお願い
光ピックアップは体に帯電している静電気等で破壊される
場合があります。光ピックアップ周辺を修理する場合は静
電気保護対策を行なった上で実施してください。（静電気
保護対策についてのページを参照してください。）
1. レーザーダイオード周辺やアクチュエータ周辺はさ
わらないこと。
2. レーザーダイオードをテスター等で良否判定しない
こと。（簡単に破壊されます。）
3. レーザーダイオードのショート･除去に使用する半田
ゴテは静電対策されたものを推奨します。
（推奨半田ゴテ）HAKKOESD対策品
2. 光ピックアップユニット、スピンドルモータアセンブリ交換時の注意
光ピックアップユニット、スピンドルモータアセンブリを交換する場合は、交換前にそれぞれの使用累積時間を確認してく
ださい。
確認方法は下記のように操作して行います。
4. 光ピックアップのフレキシブルケーブルにあるラン
ドを半田付けします。
注意
・静電対策されていない半田ゴテ使用時は、フレキシブ
ルケーブルの端子面をクリップ等でショートしてか
ら、ランドをショートしてください。
・上記のレーザーダイオードのショートは修理完了後、
本文説明順に従い正しい手順でハンダを取り除いてく
ださい。
レーザ使用時間
SPモータ使用時間
CDレーザとDVDレーザ使用時間の
リセット（同時リセット）
SPモータ使用時間のリセット
動作条件とキー操作
ストップ状態で、本体
を押す
ストップ状態で、本体
を押す
ストップ状態で、本体
を押す
ストップ状態で、本体
を押す
表 示
t1xxxxyyyy
xxxx：DVDレーザ使用時間
yyyy：CDレーザ使用時間
時間を単位10時間の4桁で表示する。
t2xxxx
xxxx=時間を単位10時間の4桁で表示する。
t100000000
t20000
光ピックアップユニット
フレキシブルケーブル クリップ等でアースしてください

DVD-S840
18
DVD-S840
■SELF-DIAGNOSIS FUNCTION AND SERVICE MODES
1. Service Mode Table
Pressing various button combinations on the player and remote control unit can activate the service modes.
Note: For jitter check, load the DVD test disc or the CD test disc. (See page 41)

DVD-S840
19
DVD-S840
■自己診断機能とサービスモード
1. モード一覧
本体ボタンとリモコンボタンの組合わせでそれぞれのモードが活用できます。
注）ジッタチェックには、DVDテストディスクまたはCDテストディスクを使用します。（41ページ参照）

DVD-S840
20
DVD-S840
Use of operation time display function
When repairing a trouble, check these figures and use them for reference.
When performing replacement, be sure to check the total operation time and reset only for the part replaced.