Yamaha SILENT Piano SD Series User manual

CONTENTS
SPECIFICATIONS ................................. 3
SWITCH BOX & PEDAL
................................... 4
CIRCUIT BOARD LAYOUT ... 5
DISASSEMBLY PROCEDURE ............... 6
LSI PIN DESCRIPTION ................ 13
IC BLOCK DIAGRAM .................... 15
CIRCUIT BOARDS ......................... 16
TEST MODE, ADJUSTMENT
....................................... 20/22
CHECKING VERSIONS AND TYPES
............. 24/26
SWITCH BOX SELF-TEST MODE
.......................... 28
PARTS LIST
BLOCK DIAGRAM, UNIT COMPARISON
WIRING
OVERALL CIRCUIT DIAGRAM
SERVICE MANUAL
PP 008610
SILENT SD SERIES
b1-Silent / JU109-Silent
(C109)
b2-Silent / JX113T-Silent
(C113T)
Copyright (c)Yamaha Corporation. All rights reserved. PDF ’06.08
HAMAMATSU, JAPAN
b1-Silent/JU109-Silent (C109) b2-Silent/JX113T-Silent (C113T)
（総合仕様）
（スイッチボックスとペダル）
（ユニットレイアウト）
（分解手順）
（LSI端子機能表）
（ICブロック図）
（シート基板図）
（テストモード、調整）
（バージョン、プログラム種別の確認）
（スイッチボックス自己診断機能）
（ブロックダイアグラム、ユニット表）
（結線図） （総回路図）
（目次）

2
SILENT SD SERIES
WARNING
145EX
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Applies to power adaptor
Connecting the Plug and Cord
IMPORTANT:
The wires in the mains lead are coloured in accordance with the following code:
BLUE: NEUTRAL
BROWN: LIVE
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your
plug, proceed as follows:
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
Make sure that neither core is connected to the earth terminal of the three pin plug.
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 all service required should be performed by an authorized Yamaha Retailer or the
appointed service representative.
IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certification,
recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.
The data provided is belived 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 changes in
specification 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 bus in the unit (heavy gauge black wires connect to this bus.)
IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.
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 REASON WHAT SO EVER!
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.
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
印の商品は、安全を維持するために重要な部品です。交換する場合は、安全のために必ず指定の部品をご使用ください。

SILENT SD SERIES
3
Keyboard 88 keys
Pedal Soft pedal, Center pedal, Damper pedal
Voice Piano
Polyphony 32-note stereo sampling
Sensors Continuous detection key sensor
Continuous detection damper pedal sensor
ON/OFF detection soft pedal sensor
Controls Power switch, Volume control, Reverb depth control
Reverb type switch (4 types), Pitch adjustment
DDE adjustment (Damper pedal resonance), All reset
Terminals Headphones x 2, Power input terminal DC IN
Rated power DC12V 6W
Supplied accessories AC adaptor YAMAHA PA-5D, Headphones,
Headphones hanger and attachment screws,
Owner's manual
SPECIFICATIONS
総合仕様
鍵盤 88鍵
ペダル ソフトペダル、消音ペダル、ダンパーペダル
音色 ピアノ
最大同時発音数 ステレオサンプリング32音
センサーユニット 連続検出キーセンサー
連続検出ダンパーペダルセンサー
ON/OFF検出ソフトペダルセンサー
コントロール・機能 電源スイッチ、音量ツマミ、リバーブ深さツマミ、
リバーブ種類切り替え（4種類）、ピッチ調整、
DDE調整（ダンパーペダル共鳴）、オールリセット
付属端子 ヘッドフォン端子（2）、電源入力端子DCIN
定格電源 AC100V(50/60Hz)
定格消費電力 DC12V6W
付属品 ACアダプター（ヤマハPA-5D）（1個）、ヘッドフォン（1個）、
ヘッドフォンハンガー（1個）、ヘッドフォンハンガー取り付けねじ（2個）、
取扱説明書

4
SILENT SD SERIES
SWITCH BOX & PEDAL
（スイッチボックスとペダル）
Soft pedal
（ソフトペダル）
Damper pedal
（ダンパーペダル）
Center pedal
（消音ペダル）
Switch box unit
（SWBOXユニット）
• Rear panel（リアパネル）
Switch Box（スイッチボックス）
[POWER] switch
（電源スイッチ） [REVERB] control
（リバーブ調整ツマミ）
[VOLUME] control
（音量ツマミ）
[PHONES] sockets
（ヘッドフォン端子）
[PDL] connector
（PDL端子） [DC IN 12V] connector
（DCIN12V端子）

[KEY] connector
（KEY端子）
• Front panel（フロントパネル）
POWER REVERB VOLUME
OFF ON
PHONES
AB

SILENT SD SERIES
5
CIRCUIT BOARD LAYOUT
（ユニットレイアウト）
Pedal unit S (Soft)
（ペダルユニットＳ） Pedal unit L (Damper)
（ペダルユニットＬ）
Switch box unit
（SWBOXユニット）
Switch box unit
（SWBOXユニット）
DM
AM
Key sensor unit
（キーセンサーユニット）
● Switch Box Unit（SWBOXユニット）
●
b1-Silent/ JU109-Silent (C109)
DC-IN
KEY SENSOR
AM
< Rear view >
< Right side view >
< Top view >
< Front view >
< Front view >
DM
AM
Power switch（電源スイッチ）

SILENT SD SERIES
6
[A]
Switch box unit
（SW BOXユニット）
Headphone hanger
（ヘッドホンハンガー）
[41S]
Switch box unit
（SW BOXユニット）
[41S]
<Bottom view>
[41S]: Bind Head Screw (小ネジ＋BIND) 4.0X12 MFZN2B3 (WF456600)
Fig. A-1（図A-1）
Fig. A-2（図A-2）
DISASSEMBLY PROCEDURE（分解手順）
[A]: Bind Head Screw (小ネジ＋BIND) 4.0X8 MFZN2B3 (WE969000)
A. Switch Box Unit
1. Removing the Switch Box Unit
(Time required: About 1 minute)
1-1 Remove the AC adaptor, connector assembly-KEY
and connector assembly-PDL from the backside of
the switch box unit.
1-2 Loosen the three (3) screws marked [41S], slide
the switch box unit toward you and then remove it
from the piano body, and carefully place it upside
down on a soft cloth. (Fig. A-1, Fig. A-2)
1-3 Remove the two (2) screws marked [A]. The
headphone hanger can then be removed from the
switch box unit. (Fig. A-2)
* A label marked “KEY” or “PDL” is attached on
the connector assembly-KEY and connector
assembly-PDL respectively. Before connecting
a connector assembly to the switch box unit,
see the label to check if the connector assembly
is inserted to the correct connector, and then
insert all the way seated.
A. SWBOX ユニット
1. SWBOXユニットの取り外し
（所要時間:約 1 分）
1-1 SWBOXユニットの背面からACアダプタ、KEY束
線、PDL 束線を抜きます。
1-2 [41S]のネジ3 本を緩めて、手前にスライドしてピ
アノ本体からSWBOX ユニットを外し、布を敷い
た上に上面を下にして静かに置きます。（図A-1、
図A-2）
1-3 [A]のネジ 2 本を外して、SWBOX ユニットから
ヘッドホンハンガーを外します。（図 A-2）
※ KEY束線と PDL束線にはそれぞれKEYまたは
PDLと記されたラベルが貼られています。SW
BOXユニットに束線を差し込む際は、ラベルに記
されたコネクタに、しっかりと奥まで差し込んで
ください。

7
SILENT SD SERIES
Fig. A-3（図A-3）
[71G]
[71G]
[71G]
[71G]
Knob
（ツマミ）
Switch box front panel
（SB前パネル）
[61G]
[61G]
Switch box upper case
（SB上ケース）
[61G]: Bind Head Tapping Screw-S (Sタイト＋BIND) 3.0X6 MFZN2B3 (WE877800)
[71G]: Flat Head Tapping Screw (Sタイト＋FLAT) 3.0X6 MFZN2B3 (WE986900)
2. Disassembling the Switch Box Unit
2-1 Switch Box Front Panel
(Time required: About 1 minute)
2-1-1 Pull out the two (2) knobs for [VOLUME] and
[REVERB], and remove the four (4) screws marked
[71G]. The switch box front panel can then be
removed. (Fig. A-3)
2-2 Switch Box Upper Case
(Time required: About 2 minutes)
2-2-1
Remove the switch box front panel. (See procedure A-2-1)
2-2-2 Remove the three (3) screws marked [61G]. The
switch box upper case can then be removed.
(Fig. A-3)
2-3 DM Circuit Board (Time required: About 4 minutes)
2-3-1
Remove the switch box front panel. (See procedure A-2-1)
2-3-2 Remove the switch box upper case. (See procedure A-2-2)
2-3-3 Remove the two (2) screws marked [121G] and two
(2) screws marked [122G]. The DM circuit board
can then be removed. (Fig. A-4)
2-4 DC-IN Circuit Board
(Time required: About 3 minutes)
2-4-1
Remove the switch box front panel. (See procedure A-2-1)
2-4-2 Remove the switch box upper case. (See procedure A-2-2)
2-4-3 Remove the two (2) screws marked [131G]. The DC-
IN circuit board can then be removed. (Fig. A-4)
2-5 Connector assembly-SW
(Time required: About 4 minutes)
2-5-1
Remove the switch box front panel. (See procedure A-2-1)
2-5-2 Remove the switch box upper case. (See procedure A-2-2)
2-5-3 Remove the DC-IN circuit board. (See procedure A-2-4)
2-5-4 Disconnect the connector of the connector
assembly-SW from the AM circuit board. While
holding down the hooks on the both sides of the
seesaw switch, pull out the seesaw switch and
remove the connector assembly-SW. (Fig. A-4)
2-3 DM シート（所要時間:約 4 分）
2-3-1 SB 前パネルを外します。（A-2-1 項参照）
2-3-2 SB 上ケースを外します。（A-2-2 項参照）
2-3-3 [121G]のネジ 2 本と[122G]のネジ2 本を外して、
DM シートを外します。（図 A-4）
2-4 DC-IN シート（所要時間:約 3 分）
2-4-1 SB 前パネルを外します。（A-2-1 項参照）
2-4-2 SB 上ケースを外します。（A-2-2 項参照）
2-4-3 [131G]のネジ2本を外して、DC-INシートを外しま
す。（図 A-4）
2-5 SW 束線（所要時間:約 4 分）
2-5-1 SB 前パネルを外します。（A-2-1 項参照）
2-5-2 SB 上ケースを外します。（A-2-2 項参照）
2-5-3 DC-IN シートを外します。（A-2-4 項参照）
2-5-4 AMシートからSW束線のコネクタを抜きます。照
光シーソー SW の両横にあるツメを押さえながら
パネルの手前に押し出して、SW 束線を外します。
（図 A-4）
2. SWBOX ユニットの分解
2-1 SB 前パネル（所要時間:約 1 分）
2-1-1 [VOLUME]・[REVERB]コントロール用のツマミ 2
個を引き抜き、[71G]のネジ4本を外して、SB前パ
ネルを外します。（図 A-3）
2-2 SB 上ケース（所要時間:約 2 分）
2-2-1 SB 前パネルを外します。（A-2-1 項参照）
2-2-2 [61G]のネジ3 本を外して、SB 上ケースを外しま
す。（図 A-3）

SILENT SD SERIES
8
[111G]: Bind Head Tapping Screw-S (Sタイト＋BIND) 3.0X6 MFZN2B3 (WE877800)
[112G]: Hexagonal Nut (ナット特殊) M12X14X2 P=1.0 (WF559900)
Fig. A-5（図A-5）
[111G]
[111G]
[112G]
[111G]
[B]
AM
Fig. A-4（図A-4）
[51GA]: Bind Head Tapping Screw-S (Sタイト＋BIND) 3.0X6 MFZN2B3 (WE877800)
[121G]: Bind Head Tapping Screw-S (Sタイト＋BIND) 3.0X6 MFZN2B3 (WE877800)
[122G]: Bind Head Tapping Screw-S (Sタイト＋BIND) 3.0X6 MFZN2B3 (WE877800)
[131G]: Bind Head Tapping Screw-S (Sタイト＋BIND) 3.0X6 MFZN2B3 (WE877800)
[121G]
[131G]
[51GA]
[122G]
[131G]
[121G]
Switch box PCB chassis
（SB基板シャーシ）
Seesaw switch
（照光シーソーSW）
Hook
（ツメ）
Connector assembly-SW
（SW束線）
DM
DC-IN
2-6 AM Circuit Board (Time required: About 3 minutes)
2-6-1 Remove the switch box front panel. (See procedure A-2-1)
2-6-2 Remove the switch box upper case. (See procedure A-2-2)
2-6-3 Remove the screw marked [51GA] and two (2)
screws marked [122G]. The switch box PCB chassis
can then be removed together with the DM circuit
board and DC-IN circuit board. (Fig. A-4)
2-6-4 Remove the two (2) hexagonal nuts marked [B],
two (2) hexagonal nuts marked [112G], and three
(3) screws marked [111G]. The AM circuit board
can then be removed. (Fig. A-5)
2-6 AM シート（所要時間:約 3分）
2-6-1 SB 前パネルを外します。（A-2-1 項参照）
2-6-2 SB 上ケースを外します。（A-2-2 項参照）
2-6-3 [51GA]のネジ1 本と[122G]のネジ2 本を外して、
DMシートとDC-INシートと共にSB基板シャーシ
を外します。（図 A-4）
2-6-4 [B]の六角ナット 2 個と[112G]の六角ナット 2 個、
[111G]のネジ3本を外して、AMシートを外します。
（図 A-5）

9
SILENT SD SERIES
Upper front board
（上前板）
Top board
（屋根）
Fall board
（鍵盤蓋）
Upper front board
（上前板）
Upper front board
stopper
（上前板止め木）
Upper front board
stopper
（上前板止め木）
Fig. B-1（図B-1） Fig. B-2（図B-2）
Fig. B-3（図B-3）
B. Exterior and Keyboard
•b2-Silent/JX113T-Silent (C113T)
1. Upper Front Board
(Time required: About 2 minutes)
1-1 Open the top board. (Fig. B-1)
1-2 Turn the right and left upper front board stoppers.
(Fig. B-2)
1-3 Put your hand on the middle portion of the upper
front board and lift it to remove it. (Fig. B-2)
2. Lower Front Board
(Time required: About 1 minute)
2-1 Remove the switch box unit. (See procedure A-1)
2-2 While pushing the spring, pull the knob to the front
and remove the lower front board. (Fig. B-3)
Lower front board
（下前板）
Knob
（下前板ツマミ）

B. 外装と鍵盤
•b2-Silent/JX113T-Silent (C113T)
1. 上前板（所要時間：約 2 分）
1-1 屋根を開けます。（図 B-1）
1-2 左右の上前板止め木を内側に回します。（図 B-2）
1-3 上前板の中央部に手をかけ、持ち上げて外します。
（図 B-2）
2. 下前板（所要時間：約 1 分）
2-1 SWBOX ユニットを外します。（A-1 項参照）
2-2 バネを押しながら下前板ツマミを手前に引き、下
前板を外します。（図 B-3）

SILENT SD SERIES
10
Fall board
（鍵盤蓋）
Keyboard（鍵盤）
Key shutter（キーシャッター）
Fig. B-4（図B-4）
Fig. B-6（図B-6）
Fig. B-5（図B-5）
3. Key Stopper and Keyboard
(Time required: About 24 minutes)
3-1 Remove the upper front board. (See procedure B-1)
3-2 Open the fall board vertically and pull up to remove
it. (Fig. B-4)
3-3 Remove the two (2) screws marked [C]. The key
stopper can then be removed. (Fig. B-5)
3-4 Remove all the keyboards. (Fig. B-6)
* When removing the keyboards, be careful not
to break the key shutter attached to the
keyboard. Also, when placing the removed
keyboard on the floor, be careful not to break
the key shutter.
* When removing the keyboards, be careful not
to touch the key shutter.
Key shutter:
Remove the key shutter from the keyboard. (Fig. B-6)
Pull the key shutter with slightly slanting it.
* When inserting the key shutter, also slant and
insert it.
[C]
[C]
Key stopper
（鍵盤押さえ）
3. 鍵盤押さえと鍵盤（所要時間：約 24分）
3-1 上前板を外します。（B-1 項参照）
3-2 鍵盤蓋を垂直に開け、持ち上げて外します。
（図 B-4）
3-3 [C]のネジ 2 本を外して、鍵盤押さえを外します。
（図 B-5）
3-4 すべての鍵盤を外します。（図 B-6）
※ 鍵盤を外すときは、鍵盤に付いているキーシャッ
ターを破損しないように注意してください。また、
取り外した鍵盤を下に置くときは、キーシャッ
ターを破損しないように注意してください。
※ 鍵盤を外すときに、キーシャッターに触らないよ
うにしてください。
キーシャッター：
鍵盤からキーシャッターを外します。（図 B-6）
キーシャッターを反らせながら引き抜きます。
※ 差し込むときも、反らせながら差し込んでくだ
さい。

11
SILENT SD SERIES
[31S] [31S]
[31S][31S] Key sensor unit
（キーセンサーユニット）
[51GB]
[51GB][51GB]
<Top view>
<Bottom view>
<Top view>
<Bottom view>
KEY SENSOR
Key sensor unit
（キーセンサーユニット）
KEY SENSOR
Fig. C-1（図C-1）
Fig. C-2（図C-2）
[31S]: Truss Head Tapping Screw-1 (TP#1＋TRUS) 4.0X20 MFZN2B3 (WE965300)
[51GB]: Bind Head Tapping Screw-S (Sタイト＋BIND)
3.0X4 MFZN2W3 (WG242400)
C. Electrical Components
1. Key Sensor Unit
(Time required: About 26 minutes)
1-1 Remove the upper front board. (See procedure B-1)
1-2 Remove the fall board. (See procedure B-3-2)
1-3 Remove the key stopper. (See procedure B-3-3)
1-4 Remove all the keyboards. (See procedure B-3-4)
1-5 Remove the eight (8) screws marked [31S]. The
key sensor unit can then be removed. (Fig. C-1)
2. KEY SENSOR Circuit Board
(Time required: About 27 minutes)
2-1 Remove the upper front board. (See procedure B-1)
2-2 Remove the fall board. (See procedure B-3-2)
2-3 Remove the key stopper. (See procedure B-3-3)
2-4 Remove all the keyboards. (See procedure B-3-4)
2-5 Remove the key sensor unit. (See procedure C-1)
2-6 Remove the two (2) screws marked [51GB]. The
KEY SENSOR circuit board can then be removed.
(Fig. C-2)
C. 電気部品
1. キーセンサーユニット（所要時間：約 26 分）
1-1 上前板を外します。（B-1項参照）
1-2 鍵盤蓋を外します。（B-3-2 項参照）
1-3 鍵盤押さえを外します。（B-3-3 項参照）
1-4 すべての鍵盤を外します。（B-3-4 項参照）
1-5 [31S]のネジ8本を外して、キーセンサーユニット
を外します。（図 C-1）
2. KEYSENSOR シート（所要時間：約 27分）
2-1 上前板を外します。（B-1項参照）
2-2 鍵盤蓋を外します。（B-3-2 項参照）
2-3 鍵盤押さえを外します。（B-3-3 項参照）
2-4 すべての鍵盤を外します。（B-3-4 項参照）
2-5 キーセンサーユニットを外します。（C-1 項参照）
2-6 [51GB]のネジ2本を外して、KEYSENSORシート
を外します。（図 C-2）

SILENT SD SERIES
12
[61S]
Pedal unit L（ペダルユニットL）
Pedal unit L
（ペダルユニットL）
<Top view>
Pedal unit S
（ペダルユニットS）
Pedal unit S（ペダルユニットS） <Top view>
[71S]
Fig. C-3（図C-3）
[61S]: Truss Head Tapping Screw-1 (TP#1＋TRUS) 4.0X14 MFZN2W3 (WE965100)
Fig. C-4（図C-4）
[71S]: Truss Head Tapping Screw-1 (TP#1＋TRUS) 4.0X14 MFZN2W3 (WE965100)
[71S]
[71S]
[61S]
[61S]
Pedal unit S
（ペダルユニットS） Pedal unit L （ペダルユニットL）
<Top view>
• b2-Silent/JX113T-Silent (C113T)
Fig. C-5（図C-5）
[61S]: Truss Head Tapping Screw-1 (TP#1＋TRUS) 4.0X14 MFZN2W3 (WE965100)
[71S]: Truss Head Tapping Screw-1 (TP#1＋TRUS) 4.0X14 MFZN2W3 (WE965100)
3. Pedal Unit L (Time required: About 1 minute)
3-1 Remove the switch box unit. (See procedure A-1)
3-2 Remove the lower front board. (See procedure B-2)
3-3 Remove the two (2) screws marked [61S].The pedal
unit L can then be removed. (Fig. C-3, Fig. C-5)
4. Pedal Unit S (Time required: About 1 minute)
4-1 Remove the switch box unit. (See procedure A-1)
4-2 Remove the lower front board. (See procedure B-2)
4-3 Remove the two (2) screws marked [71S].The pedal
unit S can then be removed. (Fig. C-4, Fig. C-5)
3. ペダルユニットL（所要時間：約 1 分）
3-1 SWBOXユニットを外します。（A-1項参照）
3-2 下前板を外します。（B-2 項参照）
3-3 [61S]のネジ 2 本を外して、ペダルユニットL を外
します。（図 C-3、図 C-5）
4. ペダルユニットS（所要時間：約 1 分）
4-1 SWBOXユニットを外します。（A-1項参照）
4-2 下前板を外します。（B-2 項参照）
4-3 [71S]のネジ 2 本を外して、ペダルユニット S を外
します。（図 C-4、図 C-5）

SILENT SD SERIES
13
AK4385ET (X6040A00) DAC (Digital to Analog Converter) ............................................................... 14
HD6433690B70FYV (X6008200) CPU (E-HOSTs) ............................................................................ 14
HD64F2128F16 (X2690A00) CPU (FLASH) ...................................................................................... 14
YMW767-VTZ (X6055A00) CPU (SWL01B) ...................................................................................... 13
LSI PIN DESCRIPTION
PIN
NO. I/O FUNCTIONNAME PIN NO. I/O FUNCTIONNAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Vss
TESTN
PLLBPN
PLLV
DD
CIN
PLLVss
TRSTN
TMS
TCK
TDI
TDO
XI
XO
Vss
V
DD
ICN
ECSN
EWRN/PD5
ERDN/PD4
EA3/PD3
EA2/PD2
EA1/PD1
EA0/PD0
IOV
DD
ED0/PC0
ED1/PC1
ED2/PC2
ED3/PC3
ED4/PC4
ED5/PC5
ED6/PC6
ED7/PC7
Vss
IRQ0N/PH0
TxD0
RxD0
TxD1/PG2
RxD1/PH1
SCLK1/PH2
SDO
SDI/PH3
BCLK
WCLK/SYO
SYSCLK/PG3
Vss
V
DD
IOV DD
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
Vss
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7/SYI
-
I
I
-
-
-
I
I
I
I
O
I
O
-
-
I
I
I
I
I
I
I
I
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
I
O
I
O
I
I
O
I
O
O
O
-
-
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Ground
Input for TEST
PLL bypass select
PLL Power supply +2.5 V
Capacitor terminal for PLL
PLL Ground
JTAG input
JTAG output
Crystal oscillator
Crystal oscillator
Ground
Power supply +2.5 V
Hardware reset
CPU I/F chip select
CPU I/F write enable / Port D
CPU I/F read enable / Port D
CPU I/F address bus / Port D
Power supply +3.3 V
CPU I/F data bus / Port C
Ground
Interrupt input / Port H
Serial output
Serial input
Serial output / Port G
Serial input / Port H
External synchronization clock / Port H
Serial output
Serial input / Port H
Bit clock output
Word clock output
Clock output / Port G
Ground
Power supply +2.5 V
Power supply +3.3 V
I/O port A
Ground
I/O port B
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
Vss
IOV
DD
LBN/LWRN/PF6
UBN/UWRN/PF7
RDN/PF4
MD00
MD08
MD01
MD09
MD02
MD10
MD03
Vss
MD11
MD04
MD12
MD05
MD13
MD06
MD14
MD07
MD15
WRN/PF5
Vss
V
DD
IOV DD
MA17
MA16
MA15
MA14
MA13
MA12
MA11
MA10
MA09
MA08
MA07
MA06
MA05
Vss
MA04
MA03
MA02
MA01
CS0N/PG0
MA18
MA19
MA21/PF1
MA22/PF2
MA20
MA23/PF3
CSIN/PG1
MA00/PF0
Vss
V
DD
IOV DD
CS2N/PE0
CS3N/PE1
CS4N/CASN/PE2
CS5N/PE3
CS50RDN/PE4
CS51WRN/PE5
CS52WRN/PE6
CS53WRN/RASN/PE7
-
-
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
-
-
-
O
O
O
O
O
O
O
O
O
O
O
O
O
-
O
O
O
O
O
O
O
O
O
O
O
O
O
-
-
-
O
O
O
O
O
O
O
O
Ground
Power supply +3.3 V
External memory lower-byte enable / Port F
External memory upper-byte enable / Port F
External memory read enable / Port F
External memory data bus
Ground
External memory data bus
Ground
Power supply +2.5 V
Power supply +3.3 V
External memory address bus
Ground
External memory address bus
External memory chip select / Port G
External memory address bus
External memory address bus / Port F
External memory address bus
External memory address bus / Port F
External memory chip select / Port G
External memory address bus / Port F
Ground
Power supply +2.5 V
Power supply +3.3 V
External memory chip select / Port E
YMW767-VTZ (X6055A00) CPU (SWL01B)
DM: IC004, 007
（LSI端子機能表）

14
SILENT SD SERIES
PIN
NO. I/O
I/O
I/O
I/O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
NAME
Port5 / Transmission data
Port5 / Reception data
Port5 / Serial clock
Reset
Non-maskable interrupt
Power supply +5V
Stand-by mode signal
Ground
Crystal oscillator
Mode select
Analog ground
Port7 / Analog input
Analog power supply +5V
Port6
Power supply +5V
Port2 / Serial clock
FUNCTION PIN
NO. I/O
NAME FUNCTION
HD64F2128F16 (X2690A00) CPU (FLASH)
KEY SENSOR: CPU1
P50/TxD0
P51/RxD0
P52/SCL0
/RES
NMI
Vcc
/STBY
Vss
XTAL
EXTAL
MD1
MD0
AVss
P70/AN0
P71/AN1
P72/AN2
P73/AN3
P74/AN4
P75/AN5
P76/AN6
P77/AN7
AVcc
P60
P61
P62
P63
P64
P65
P66
P67
Vcc
P27/SCK1
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Port2 / Reception data
Port2 / Transmission data
Port2 / Serial clock
Port2 / Serial data
Port2
Ground
Port1
Port3
Port4 / Interrupt request
Port4
Port4 / Serial data
P26/RxD1
P25/TxD1
P24/SCL1
P23/SDA1
P22
P21
P20
Vss
P17
P16
P15
P14
P13
P12
P11
P10
P30
P31
P32
P33
P34
P35
P36
P37
P40//IRQ2
P41//IRQ1
P42//IRQ0
P43
P44
P45
P46
P47/SDA0
HD6433690B70FYV (X6008200) CPU (E-HOSTs)
DM: IC024
PIN
NO. NAME I/O FUNCTION PIN
NO. NAME I/O FUNCTION
Analog Power Supply (+3.3V) (Pull Up)
Sub Clock Output - (NC)
Sub Clock Input - (NC)
Internal Power Supply (+3.3V) - (NC)
RESET input - (NC)
TEST input - (NC)
Ground (Pull Up or Vcc)
Clock output - (NC)
Clock input - (NC)
Power supply SCK3 (Main CPU)
- (NC) RXD (Pull Up)
- (NC) TXD (Main CPU)
Active Sensing ON/OFF /IRQ0 (Main CPU)
- (NC) - (NC)
- (NC) - (NC)
- (NC) - (NC)
- (NC) Analog Controller (AN4)
- (NC) Analog Controller (AN5)
/E-IC Analog Controller (AN6)
SDA Analog Controller (AN7)
SCL Analog Controller (AN3)
- (NC) Analog Controller (AN2)
- (NC) Analog Controller (AN1)
- (NC) Analog Controller (AN0)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
-
O
I
-
I
I
-
O
I
-
O
O
I
O
O
O
O
O
O
I/O
I/O
O
O
O
Avcc
X2
X1
Vcl
/RES
TEST
Vss
OSC2
OSC1
Vcc
P50
P51
P52
P53
P54
P55
P10
P11
P12
P56
P57
P74
P75
P76
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
/NMI
P80
P81
P82
P83
P84
P85
P86
P87
P20
P21
P22
P14
P15
P16
P17
PB4
PB5
PB6
PB7
PB3
PB2
PB1
PB0
I
O
O
O
O
O
I
O
O
O
I
O
I
O
O
O
I
I
I
I
I
I
I
I
AK4385ET (X6040A00) DAC (Digital to Analog Converter)
DM: IC011
PIN
NO. NAME I/O FUNCTION PIN
NO. NAME I/O FUNCTION
I Master Clock Rch Analog out(-)
I Audio Serial Data Clock Rch Analog out(+)
I Audio Serial Date Input Lch Analog out(-)
I L/R Clock Lch Analog out(+)
I Power Down mode Ground
I Chip Select Power Supply
I Control Data Input Rch Data Zero Input Detect
I Control Data Input Lch Data Zero Input Detect
1
2
3
4
5
6
7
8
MCLK
BICK
SDTI
LRCK
PDN
CSN
CCLK
CDTI
9
10
11
12
13
14
15
16
AOUTR-
AOUTR+
AOUTL-
AOUTL+
Vss
VDD
DZFR
DZFL
O
O
O
O
-
-
O
O

SILENT SD SERIES
15
IC BLOCK DIAGRAM
MM74HC14SJX_NL (XW104A00)
Hex Inverter
KEY SENSOR: IC006
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
GND
14
VDD
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
HA1630Q04T 4CH (X2869A00)
Quad Operational Amplifier
KEY SENSOR: OP001, 002
1
2
3
4
5
6
7
OUT A
-IN A
+IN A
+V
DD
+IN B
-IN B
OUT B
14
13
12
11
10
9
8
OUT D
-IN D
+IN D
-V
SS
+IN C
-IN C
OUT C
+-
+V
+-
+-
+-
-V
SN74LV32APWR (X5647A00)
Quad 2 Input OR
DM: IC018
1
2
3
1A
1Y
4 2A
5 2B
6 2Y
7 GND
1B
14
13
12
Vcc
4A
11 4Y
10 3B
9 3A
8 3Y
4B
SN74LV126APWR (X3865A00)
Bus Buffer
DM: IC029
1
2
3
4
5
6
7
1G
1A
2Y
2G
2A
2Y
GND
14
13
12
11
10
9
8
Vcc
4G
4A
4Y
3G
3A
3Y
SN74AHCT245PWR (X2709A00)
TC74VHCT245AFT(E,K) (XT744B00)
Octal 3-State Bus Transceiver
DM: IC028
1D1R
2
3
4
5
6
7
8
9
10
A1
A2
A3
A4
A5
A6
A7
A8
GND 11
12
13
14
15
16
17
18
19
20 V
CC
G
B1
B2
B3
B4
B5
B6
B7
B8
SN74AHC1G08DCKR (X3833A00)
TC7S08FU (XP116A00)
Single 2-Input Positive-AND Gate
DM: IC002, 023
1
2
3
A
B
GND
5
4
Vcc
Y
INPUTS
FUNCTION TABLE
OUTPUT
AB Y
H
L
L
H
X
L
H
L
X
LA6517M-TRM-E (XT131A00)
Dual Power Operational Amplifier
AM: IC209
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Thermal Shut
Doun and
Current Limiter
Amp1
Amp2
NC
NC
OUT 1
VCC
OUT 2
VEE
NC
NC NC
NC
INPUT -2
INPUT +2
INPUT +1
INPUT -1
NC
NC
NJM2068M-D (TE2) (X3505A00)
µPC4570G2-E1-A (X7351A00)
Dual Operational Amplifier
DM: IC014
1
2
3
4-V
8
7
6
5
Output A +V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A
+-
+-
（IC ブロック図）

16
SILENT SD SERIES
Component side（部品側）
CIRCUIT BOARDS
AM Circuit Board (X7417B0) ......................................................................................... 16/17
DC-IN Circuit Board (X7417B0) ..........................................................................................19
DM Circuit Board (X5830E0) ...............................................................................................18
KEY SENSOR Circuit Board (X2329B0) .............................................................................19
Note: See parts list for details of circuit board component parts.
not installed
to DM-CN7
to DM-CN1
to DC-IN-CN101
to DC-IN-CN104
REVERB
VOLUME
PHONES
A
B
not installed
not installed
to Power switch
not installed
AM Circuit Board
AM: SW15-X7417B0
（シート基板図）
注： シートの部品詳細はパーツリストをご参照ください。

SILENT SD SERIES
17
AM: SW15-X7417B0
AM Circuit Board
Pattern side（パターン側）

18
SILENT SD SERIES
2NA-WD97020
2NA-WD97020
DM Circuit Board
to DC-IN -CN103
to AM-CN206
to AM-CN205
not installed
not installednot installed
not installed
not installed to DC-IN-CN102
not installed
not installed
Component side（部品側）
Pattern side（パターン側）
5
6

SILENT SD SERIES
19
not connected
not installed
not installed
DC IN 12V PDL
KEY
to DM-CN2
to DM-CN3to AM-CN204
to AM-CN202
DC-IN: SW15-X7417B0
KEY SENSOR: V858590
KEY SENSOR Circuit Board
DC-IN Circuit Board
Component side（部品側）
Component side（部品側）
Pattern side（パターン側）
Pattern side（パターン側）

20
SILENT SD SERIES
TEST MODE, ADJUSTMENT
[1] Key Sensor Adjustment
A) Measurement of All Keys
1) Start-up
Turn on the power switch while pressing the three lowest F#0 (10), G#0 (12), and A#0 (14) keys, and release the keys
in two seconds. (Fig. 1)
A tone will be sounded at regular two-second intervals. (Waiting mode)
Wait for about 30 seconds until the key sensor is stabilized.
2) Start of rest value reading
Depress the damper pedal.
Two successive tones will be sounded at regular one-second intervals.
If the tone does not change, wait a moment; then, repeat the procedure.
Then, the mode will change to the rest value reading mode.
3) Rest value reading
Confirm that the key is in the rest position.
If it is not, adjust the key to the rest position.
4) Fixing the rest value
Depress the damper pedal.
The rest value of the key will be fixed and three successive tones will be sounded at regular one-second intervals.
Then, the mode will change to the end value reading mode.
5) End value reading
Press the keys lightly one by one in order as far as to the end position.
(The same key may be pressed more than once because the minimum value is internally memorized.)
6) Fixing the end value
Depress the damper pedal.
The end values of the damper pedal and keys will be fixed and a tone will be sounded at regular two-second intervals.
7) Flash memory writing
Depress the soft pedal.
The tone will die away and writing will start.
The writing will be completed in about 10 seconds; then, the high tone will sound three times.
(If the writing fails, the error key is shown by NG key sound between alternating high tones “re” and “do”.)
Turn off the power switch to finish the operation.
(Reference)
Rest value: indicates that the key is not pressed.
End value: indicates that the key is lightly pressed to the bottom of the keyboard.
C0 D0
C#0 D#0
E0 F0 G0 A0
F#0 G#0 A#0
B0 C1 D1
C#1 D#1
E1 F1 G1 A1
F#1 G#1 A#1
B1 C2 D2
C#2 D#2
E2 F2 G2 A2
F#2 G#2 A#2
B2 C3 D3
C#3 D#3
E3 F3 G3 A3
F#3 G#3 A#3
B3 C4 D4
C#4 D#4
E4 F4 G4 A4
F#4 G#4 A#4
B4 C5 D5
C#5 D#5
E5 F5 G5 A5
F#5 G#5 A#5
B5 C6 D6
C#6 D#6
E6 F6 G6 A6
F#6 G#6 A#6
B6 C7
B-1A-1
[3] Sensor Test Mode
[1] Key Sensor Adjustment
B) One key measurement
[1] Key Sensor Adjustment
A) Measurement of All Keys
[2] Damper Pedal Sensor Adjustment
A#-1
(2) (5) (7) (10) (12) (14) (17) (19) (22) (24) (26) (29) (31) (34) (36) (38)
(1) (3) (4) (6) (8) (9) (11) (13) (15) (16) (18) (20) (21) (23) (25) (27) (28) (30) (32) (33) (35) (37) (39)
(41) (43) (46) (48) (50)
(40) (42) (44) (45) (47) (49) (51)
(53) (55) (58) (60) (62)
(52) (54) (56) (57) (59) (61) (63)
(65) (67) (70) (72) (74)
(64) (66) (68) (69) (71) (73) (75)
(77) (79) (82) (84) (86)
(76) (78) (80) (81) (83) (85) (87) (88)
       
         
• Keys corresponding to start-up of each test mode and adjustment
(Fig. 1)
If the illustration of a camera is clicked, an animation will flow.