Yamaha PSR-S550, PSR-S550B User Manual
SERVICE MANUAL
PSR-S550 PSR-S550B
CONTENTS（目次）
SPECIFICATIONS..................................................................... 3
PA NEL LAYOUT ........................................................................ 4
CIRCUIT BOARD LAYOUT & WIRING
（ユニットレイアウト及び結線図）................................... 6
EXTENSION CABLE FOR SERVICE USE
（サービス用延長ケーブル）.............................................. 7
BLOCK DIAGRAM（ブロックダイアグラム）........................... 8
DISASSEMBLY PROCEDURE（分解手順）.............................. 9
LSI PIN DESCRIPTION（LSI端子機能表）............................. 16
IC BLOCK DIAGRAM （ICブロック図）................................. 20
CIRCUIT BOARDS（シート基板図）...................................... 21
TEST PROGRAM ................................................................... 33
INITIALIZATION ...................................................................... 37
DATA BACKUP ........................................................................ 38
SYSTEM BOOTING FLOW CHART ....................................... 43
MIDI IMPLEMENTATION CHART
（MIDIインプリメンテーションチャート）..................... 44
MIDI DATA FORMAT ............................................................... 45
PA RTS LIST
OVERALL CIRCUIT DIAGRAM（総回路図）
PK 001810
HAMAMATSU, JAPAN
Copyright (c) Yamaha Corporation. All rights reserved. ’08.08
PSR-S550/PSR-S550B
p
p
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:
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. 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:
IMPORTANT:
WARNING: 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
WHAT SO EVER!
IMPORTANT NOTICE
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.
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.
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.)
Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to
the unit.
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
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
SAVING DATA
Saving and backing up your data
The panel settings and some other types of data are not retained in memory when you turn off the power to the
instrument. Save data you want to keep to the Registration Memory.
Saved data may be lost due to malfunction or incorrect operation.
Be sure to
erform it
Backing up the USB storage device/external media
Be sure to
erform it
Save important data to a USB storage device/or other external device such as a computer.
To protect against data loss through media damage, we recommend that you save your important data onto two
USB storage devices/external media.
2
■ SPECIFICATIONS
Keyboards
• 61 Standerd-size keys (C1–C6), with Touch Response.
Display
• 320 x 240 dots LCD display (backlit)
Setup
• STANDBY/ON
•MASTER VOLUME: MIN–MAX
• LCD CONTRAST
Panel Controls
• DEMO, SONG MODE
•SONG-PRESET, SONG-USER, SONG-SCORE,
SONG-LYRICS, SONG-REC
• STYLE CATEGORY, VOICE CATEGORY
• TRANSPOSE [-] [+], METRONOME, TAP TEMPO, TEMPO [-]
[+]
•OTS LINK, AUTO FILL IN, ACMP, INTRO [1]–[3], MAIN VARIATION [A]–[D], ENDING/rit. [1]–[3] (REW) (FF), SYNC STOP
(A-B REPEAT), SYNC START (PAUSE), START/STOP
• REGIST/PART [MIXER], MEMORY, REGIST BANK [-] [+],
REGISTRATION MEMORY [1]–[8], STYLE [1]-[8], SONG
[1/9]-[8/16], EXIT, CATEGORY [ ] [ ], Dial, [+/YES] [-/NO]
• EXECUTE, MDB, FILE MENU, FUNCTION, ONE TOUTCH
SETTING [1]–[4], LEFT, DUAL, HARMONY, TOUCH,
SUSTAIN, DSP, UPPER OCTAVE [-] [+]
Realtime Control
•Pitch Bend Wheel
Voice
• 294 Voices + 12 Drum Kits + 10 SFX Kits + 480 XG Voices
(Included 11 Regional Voices and 8 Regional Drum/Percussion
Kits)
• Polyphony: 64
• LEFT
• DUAL
Style
• 176
• Style Control: ACMP ON/OFF, SYNC STOP, SYNC START,
START/STOP, INTRO [1]–[3], MAIN VARIATION [A]–[D], ENDING/rit. [1]–[3], AUTO FILL IN
•Fingering: Multi Finger, Full Keyboard
• Style Volume
Music Database
• 600
Registration Memory
•8 banks x 8 memories
• Regist Clear
Effects
• Harmony: 26 types
• Reverb: 35 types
• Chorus: 44 types
• DSP: 237 types
Song
•5 Preset Songs + User Songs + USB Memory
• Song Clear, Track Clear
• Song Volume
• Song Control: A-B REPEAT, PAUSE, REW, FF, START/STOP
Recording
• Song
User Song: 5 Songs
Recording Tracks: 1
-
16, STYLE
MIDI
• Local On/Off
• Initial Setup
• External Clock
• Keyboard Out
• Style Out
• Song Out
Auxiliary jacks
• PHONES/OUTPUT, DC IN 16V, USB TO HOST,
USB TO DEVICE, SUSTAIN
Amplifier
• 12W x 2
Speakers
• (12cm + 3cm) x 2
Power Consumption
• 25W
Power Supply
• Adaptor: Yamaha PA-301 or PA-300 AC power adaptor
Dimensions (W x D x H)
• 946 x 402 x 130 mm (37-1/4" x 15-7/8" x 5-1/8")
Weight
• 7.5kg (16 lbs., 9 oz.)
Supplied Accessories
•Music Rest
• Accessory CD-ROM
• Keyboard Stand: L6
• Foot Switch: FC4/FC5
• Owner’s Manual
• AC Power adaptor (May not be included depending on your par-
ticular area.)
Optional Accessories
• Headphones: HPE-150
• Style Creator
Function
•VOLUME: Style Volume, Song Volume
•OVERALL: Tuning, Pitch Bend Range, Split Point, Touch
Sensitivity, Chord Fingering
•MAIN VOICE: Volume, Octave, Pan, Reverb Level,
Chorus Level, DSP Level, Dry Level
• DUAL VOICE: Volume, Octave, Pan, Reverb Level,
Chorus Level, DSP Level, Dry Level
• LEFT VOICE: Volume, Octave, Pan, Reverb Level,
Chorus Level, DSP Level, Dry Level
• EFFECT: Reverb Type, Chorus Type, DSP Type, Master
EQ Type
• HARMONY: Harmony Type, Harmony Volume
• PC: PC Mode
•MIDI: Local On/Off, External Clock, Keyboard Out,
Style Out, Song Out, Initial Setup
•METRONOME: Time Signature Numerator, Time Signature
Denominator, Bell On/Off, Metronome Volume
• SCORE: Quantize, Right-Part, Left-Part
• UTILITY:
• LANGUAGE: Language
Demo Cancel, TG Mode
Mixer
• Volume, Pan, Reverb, Chorus
• Style Creator
• USB
PSR-S550/PSR-S550B
3
PSR-S550/PSR-S550B
■ PANEL LAYOUT
r
e
q
y u
w
#3
#2
• Front Panel
[STANDBY/ON] switch
q
w [MASTER VOLUME] control
e [DEMO] button
r [SONG MODE] button
t SONG
[PRESET], [USER], [SCOPE]
[LYRICS] buttons
y [USB] button
u [REC] button
i STYLE
o STYLE CONTROL
[OTS LINK], [AUTO FILL IN], [ACMP]
INTRO[I]-[III], MAIN VARIATION [A]-[D]
ENDING/rit. [I]-[III], [SYNC STOP]
[SYNC START], [START/STOP] buttons
!0 SONG CONTROL
[ ], [ ], [A B], [ ], [ / ] buttons
t i
!1 TRANSPOSE [+] and [
!2 [METRONOME] button
!3 [TAP TEMPO] button
!4 TEMPO [+] and [
!5 [REGIST/PART[MIXER]] button
!6 [MEMORY] button
!7 REGIST BANK [+] and [
!8 Style Part/Song Part [1/9]-[8/16]/
REGISTRATION MEMORY [1] - [8] buttons
!9 DISPLAY
@0 [EXIT] button
-
] buttons
-
] buttons
-
] buttons
o
!1
!2 !3
!4
!0
!5
!6
!7
4
!9
PSR-S550/PSR-S550B
@0
@1
!8
@3
Rear Panel
@1
Dial
@2
[+/YES] and [-/NO] buttons
@3
CATEGORY [ ] and [ ] buttons
@4
[EXECUTE] button
@5
[MDB] button
@6
[FILE MENU] button
@7
[FUNCTION] button
@8
ONE TOUCH SETTING [1] - [4] buttons
@9
VOICE
#0
VOICE CONTROL
[LEFT], [DUAL], [HARMONY], [TOUCH]
[SUSTAIN], [DSP] buttons
#1
UPPER OCTAVE [+] and [-] buttons
#2
[PITCH BEND] wheel
#3
Drum Kit
@4 @5
@9
@2
@6 @7
@8
#0
#4 #5 #6 #7 #8
#1
• Rear Panel
#4
SUSTAIN jack
#5
USB TO HOST and TO DEVICE terminals
#6
CONTRAST knob
#7
PHONES/OUTPUT jack
#8
DC IN 16V jack
5
PSR-S550/PSR-S550B
■ CIRCUIT BOARD LAYOUT & WIRING（ユニットレイアウト及び結線図）
（（
上上
ケケ
ーー
• Upper Case Assembly
（
（（
上
上上
ケ
ケケ
ー
ーー
スス
ス Ass’y
スス
W401
550
））
）
））
JACK
AM
540
520560
TWTW
PNR
ENC PNCDM
30
PNL
500510530
PSW
MVR
PB
• Lower Key Bed Assembly
6
（（
下下
ケケ
ーー
スス
鍵鍵
（
下
ケ
下下
ケケ
ー
ーー
（（
61L 61H
ス
スス
鍵
鍵鍵
盤盤
盤 Ass’y
盤盤
））
）
））
L30 L40L50
No. Ref. Part No. Assembly Destination Remarks
JK-AM e
xtension cab
AM-DM e
xtension cab
No.
130 (WH33630)
2 500 WJ465900 FFC4 PNL-CN102
3 510 WJ466000 FFC5 PNC-CN202
4 520 WQ075900 FFC2 DM-CN701
5 530 WJ465800 FFC3 DM-CN901
6 540 (WJ46010)
7 550 WJ465600 FFC1 DM-CN501
8 560 WH336400 LCD AM-CN102 LCD 2P
9 L30 WE13850R MK1 DM-CN801 61H-CN1 12P L=220
10 L40 WE13870R MK2 DM-CN803 61H-CN2 5P L=250
11 L50 WE13880R MK3 DM-CN802 61L-CN5 7P L=190
12 W401 (WJ45910)
*1: The parts with "( )" in "Part No." are not available as service parts.
*1:上記束線のうち、部品No.に"()"がついている部品は、サービス部品として準備されていません。
*2: Edge mark is adjusted to pin 1 mark(왕 mark).
*2:エッジマークを１ピン側（왕マーク）に合わせます。
（パーツNo.） （束線） （行き先） （備考）
*1
*1
*1
SP JACK-CN453 SP(WF) 4P
*2
PNR-CN301
*2
*2
*2
PNL-CN101
PNL-CN103
AM-CN104
*2
*2
*2
*2
14P
21P
7P
27P
JKAM AM-CN101 JACK-CN451 10P
*2
JACK-CN403
*2
14P
GND JACK(Soldered) FG L=70
PSR-S550/PSR-S550B
■ EXTENSION CABLE FOR SERVICE USE（サービス用延長ケーブル）
Check the AM circuit board and the DM circuit board by using the following extension cables.
（AMシートやDMシートは、下記の延長ケーブルを使うとチェックが容易になります。）
1.JK-AMextensioncable（JK-AMシート間の延長ケーブル）
V8973600 JUMPER WIRE FVP=2.0C26SB10-400（ジャンパーワイヤーFVP=2.0C26SB10-400）
2. AM-DM extension cable（AM-DMシート間の延長ケーブル）
WG123900 FFC CABLE P-70 （FFCケーブルP-70）
DM
JK-AM e
xtension cab
leJK-AM extension cable
AM-DM e
xtension cab
leAM-DM extension cable
7
8
28CA1-2001035400
PNC
ENC
PSW
PNL
PNR
DM
61L
JACK 2/2
CN403-14P
CN501-14P
SUSTAIN
TO DEVICE TO HOST
CONTRAST
JK401 CN401 CN402
VR401
USB
LCD
BACKLIGHT
LCD
UNIT
SW & LED
Matrix
LED
DRIVER
TR101-115
CPU
IC101(64P)
SW & LED
Matrix
SW & LED
Matrix
ROTARY
ENCODER
PA- 301
AC ADAPTER
AC IN
TW-L
3cm
TW-R
3cm
WF-R
12cm
8Ω
WF-L
12cm
8Ω
EC301
JK451
+16V
+5V
Regulator
+5A
6
14
11,13
1
1
2
1
3
8,9
+5D_2
+5LD
+5D
+5D
VR320
+5LD
+5A
+5A
RD/WRN,/WE0,/WE1/RASL,
/CASL,CKIO,CKE
PNL_IC
D[0-15]
AD[0-25]
PITCH_BEND
/ENC-A,ENC-B
/DAC-IC
SYSCLK(LCDC)
+ 3.3D
+1.2V
+3.3V
Regulator
+1.2V
Regulator
IC14-16P
DAC
24bit
ROM
256Mbit(*1)
Wave
IC13-14P
Level
Converter
IC17-44P
Key Scan CPU
MKS
CPU
SWX2
DC/DC
Converter
IC4-64P
LCDC
ROM
128MBit(*1)
Program
FLASH ROM
16MBit(*2)
Data
SDRAM
128MBit(*3)
IC13,IC24-14P
Level
Converter
IC7-316P
IC1-3P
IC6-3P
IC19-8P
IC9-56P IC10-48P IC8-54P
Keyboard 61Key 16N
with touch response
BUS Clk 67.7376MHz
Int. Clk 135.4752MHz
Ext. Clk 33.8688MHz
5MHz
Ceramic
IC5-5P
Reset
IC18-5P
USB
Bus Power
Controller
48MHz
Crystal OSC
16.9344MHz
Crystal OSC
IC16-8P
LPF
+3.3D
+3.3D
+3.3D
PNL_IC
+29V
VBUS
FUNCTION D+,D-
FUNC_DP,DM
HOST_DP,DM
OVER_CUR_N
POWER_ENB
PK2
PD6
SDO0
WCLK
BCLK
SYSCLK
PK0,PK1
*B
*C
AN3
PD7
6
5
*A39
RxD0
PD3
PEDAL
VEE1
/LCD_OFF
/LCD_IC
/CS4
/WE0,/RD
D[0-7]
A[0-15]
/CS0
/CS5
/CS3
D[0-15]
D[0-15]
A[1-20]
A[1-14]
/DTA-WP
/WE1,/RD
/H-RES
/PRG-WP
D[0-15]
A[1-23]
/WE1,/RD
/H-RES
SYSCLK
+3.3D
43
14
+3.3D
37
+3.3D
+5D
1,3,9,14
27,43,49
FPFRAME
FPLINE
FPSHIFT
MOD
FPDAT[0-3]
VBUS
VBUS
to Device D+, D-
to Host D+, D-
/WAIT
B[7-11]
B[1-7]
N[11-16]
N[21-26]
RD2
CS4N
CS0N
CS5N
CS3N
A[0-25]
D[0-15]
PG2
PG7
RDN
WE1N
WE0N
PK7
TxD0
RESN
XTAL
EXTAL
VBUS
VEE2
+5V,500mA
+20 - 26V
HOST D+,D-
IC11-56P
+1.2D
/H-RES
/H-RES
UCLK
X1
/SCK0
TIO
/RESET
X2
MKS_TX
MKS_SCLK
MKS_REQ
/MKS_IC
/MRD
RxD1
SCK1
TxD1
EICN
/MWR
/MCS0
MA[1-25]
MD[0-15]
+5A
+5D
IC101-5P
IC201-14P
IC102-3P
A Curve
5kΩ
+5V DC/DC
Converter
Power AMP
12W x 2
LA4625
STANDBY/ON
LCD DISPLAY
320 X 240
STN
CN601-14P
CN701-7P
CN702-3P
CN330-4P
CN452-4P
JK452
CN301-3P
CN103-7P
CN101-21P
CN202-21P
CN104-27P
CN901-27P
CN455-2P
CN453-4P
CN454-2P
CN102-14P
CN301-14P
CN102-2P
CN204-5P
CN310-5P
CN103-3P
CN320-3P
CN451-10P
CN101-10P
7
+5LD
8MHz
+5LD
PHONES/
OUTPUT
DCIN 16V
MASTER VOLUME
PITCH
BEND
+-
JACK
AM
PB
MVR
1/2
CN802-7P
CN801-12P
CN803-5P
CN5-7P
CN4-12P
CN3-12P
61H
CN1-12P
CN2-5P
+5D
14
14
8
+3.3D
43
+5D
17,38
+5D
4
+5D_2
*A: 7,12,22,25
32,40,48,55
*B: A20,B19,B20,C18,D8,D10
D17,D18,E8,E10,E11,E13
H5,H16,H19,H20,N5,N16
T8,T10,T11,T13,U4,U17
V3,V18,W2,W19Y1,Y20
*C: E5,E6,E15
E16,F5,F16
K5,K16,L5
L16,R5,R16
T5,T6,T15,16
PSR-S550/PSR-S550B
■ BLOCK DIAGRAM（ブロックダイアグラム）
■ DISASSEMBLY PROCEDURE（分解手順）
Front Side (Printed Side)
（表面（印刷面））
Back Side
（裏面）
CAUTION:
•Be sure to attach the removed filament tape just as it was before
removal.
• Contacts are visible from the back. Pay attention not to insert and
install the cable to the connector inversely. (Fig.1)
（注意）：
• 一度剥がしたフィラメントテープは、取り外す前と同じよう
に、取り付けてください。
• フラットケーブルの接点が裏側から透けて見えます。コネクタ
にケーブルの表、裏を逆に差し込まないように注意して取り付
けてください。（図1）
PSR-S550/PSR-S550B
Fig.1（図1）
1. Lower Case Assembly
(Time required: About 2 minutes)
1-1 Remove the six (6) screws marked [80A] , the two (2)
screws marked [100A] and the two (2) screws marked
[90]. The lower case assembly can then be removed.
(Fig.2)
[80B]
[90]
[80A]
Lower Case Assembly
（下ケースAss'y)
1. 下ケースAss'y
（所要時間：約2分）
1-1 [80A]のネジ6本、[100A]のネジ2本、[90]のネジ2本を外し、
下ケースAss'yを外します。（図2）
[100A]
[90]
[80A]
[80B]
Push Knob
（プッシュツマミ)
[80]: BindHeadTappingScrew-B3.0X12MFZN2W3(WE98740R)Ｂタイト＋ＢＩＮＤ
[90]: BindHeadTappingScrew-B3.0X20MFZN2W3(WF48930R)Ｂタイト＋ＢＩＮＤ
[100A]: BindHeadTappingScrew-B3.0X30MFZN2W3(WF49100R)Ｂタイト＋ＢＩＮＤ
Keyboard Assembly
（16N-C61鍵盤Ass'y)
Upper Case Assembly
（上ケースAss'y)
Fig.2（図2）
9
PSR-S550/PSR-S550B
2. AM Circuit Board (Time required: About 3 minutes)
2-1 Remove the lower case assembly. (See procedure 1.)
2-2 Remove the five (5) screws marked [380B]. The AM
circuit board can then be removed. (Fig.3)
3. JACK Circuit Board (Time required: About 3 minutes)
3-1 Remove the lower case assembly. (See procedure 1.)
3-2 Remove the AM circuit board. (See procedure 2.)
3-3 Remove the screw marked [380E] at the location of “A”.
(Fig.4)
*As for the screw marked [380E] at the location of “A”, it
is tightened together with a GND terminal. (Fig.4)
3-4 Remove the five (5) screws marked [380A] and the two
(2) screws marked [385]. The JACK circuit board can
then be removed. (Fig.3)
(Lower Key Bed Assembly)
（下ケース鍵盤Ass'y）
2. AMシート
（所要時間：約3分）
2-1 下ケースAss'yを外します。（1項参照）
2-2 [380B]のネジ5本を外し、AMシートを外し ま す。（図3）
3. JACKシート
（所要時間：約3分）
3-1 下ケースAss'yを外します。（1項参照）
3-2 AMシートを外し ま す。（2項参照）
3-3 Aの位置の[380E]のネジ1本を外します。（図4）
*Aの位置の[380E]のネジはGND端子と共締めされてい
ます。（図4）
3-4 [380A]のネジ5本と[385]のネジ2本を外し、JACKシートを外
します。（図3）
[380B]
[100B]
(Upper Case Assembly)
（上ケースAss'y）
[380C]
PSW
(L)
TW
Tw eeter (L)
（ツィーター（左））
[380D]
(Woofer (L))
（ウーファー（左））
[40]: BindHeadTappingScrew-B4.0X12MFZN2W3(WE98120R)Ｂタイト＋ＢＩＮＤ
[100B]: BindHeadTappingScrew-B3.0X30MFZN2W3(WF49100R)Ｂタイト＋ＢＩＮＤ
[380]: BindHeadTappingScrew-B3.0X8MFZN2W3(WE774301)Ｂタイト＋ＢＩＮＤ
[385]: BindHeadTappingScrew-B3.0X12MFZN2W3(WE98740R)Ｂタイト＋ＢＩＮＤ
AM
[40] [40] (Woofer (R))
[385] [380A]
JACK
(Lower Case Assembly)
（下ケースAss'y）
（ウーファー（右））
(R)
TW
Tw eeter (R)
（ツィーター（右））
[380D]
10
Fig.3（図3）
PSR-S550/PSR-S550B
4. DM Circuit Board (Time required: About 4 minutes)
4-1 Remove the lower case assembly. (See procedure 1.)
4-2 Remove the AM circuit board. (See procedure 2.)
4-3 Remove the four (4) screws marked [380E]. The DM
circuit board can then be removed. (Fig.4)
*As for the screw marked [380E] at the location of “A”, it
is tightened together with a GND terminal. (Fig.4)
PNL PNR
[380I]
[380G]
PNC
PB
MVR
[380H]
[380]:BindHeadTappingScrew-B3.0X8MFZN2W3(WE774301)Ｂタイト＋ＢＩＮＤ
Fig.4（図4）
5. LCD Unit
(Time required: About 5 minutes)
5-1 Remove the lower case assembly. (See procedure 1.)
5-2 Remove the AM circuit board. (See procedure 2.)
5-3 Remove the DM circuit board. (See procedure 4.)
5-4 Remove the four (4) screws marked [380L]. The LCD
unit can then be removed. (Fig. 5)
4. DMシート
（所要時間：約4分）
4-1 下ケースAss'yを外します。（1項参照）
4-2 AMシートを外し ま す。（2項参照）
4-3 [380E]のネジ4本を外し、DMシートを外し ま す。（図4）
*Aの位置の[380E]のネジ1本はGND端子と共締めされ
ていま す。（図4）
ENC
[380J]
[380F]
[380K]
DM
[380E]
A
5. 液晶ユニット
（所要時間：約5分）
5-1 下ケースAss'yを外します。（1項参照）
5-2 AMシートを外し ま す。（2項参照）
5-3 DMシートを外し ま す。（4項参照）
5-4 [380L]のネジ4本を外し、液晶ユニットを外 し ま す。（図5）
6. ENC Circuit Board (Time required: About 4 minutes)
6-1 Remove the lower case assembly. (See procedure 1.)
6-2 Remove the encoder knob from the control panel.
(Fig. 6)
6-3 Remove the four (4) screws marked [380F]. The ENC
circuit board can then be removed. (Fig.4)
[380L]
LCD Unit
（液晶ユニット）
[380L]:BindHeadTappingScrew-B3.0X8MFZN2W3(WE774301) Ｂタイト ＋ＢＩＮＤ
Fig.5（図5）
Upper Case Assembly
（上ケースAss'y）
6. ENCシート
（所要時間：約4分）
6-1 下ケースAss'yを外します。（1項参照）
6-2 コントロールパネル面からエンコーダツマ ミ を外 し ま す。
（図6）
6-3 [380F]のネジ4本を外し、ENCシートを外し ま す。（図4）
Encoder knob
（エンコーダツマミ）
Fig.6（図6）
11
PSR-S550/PSR-S550B
7. PSW Circuit Board (Time required: About 3 minutes)
7-1 Remove the lower case assembly. (See procedure 1.)
7-2 Remove the two (2) screws marked [380C]. The PSW
circuit board can then be removed. (Fig.3)
7-3 Pull out the push knob (black) from the PSW circuit
board. (Fig.2)
8. TW Circuit Board, Speaker (Tweeter) (Time required: About 3 minutes each)
8-1 Remove the lower case assembly. (See procedure 1.)
8-2 Remove the two (2) screws marked [380D]. The speaker
(tweeter) can then be removed. (Fig.3)
* The tweeters L and R can be removed in the same
manner.
9. Wheel Assembly, PB, MVR, PNL, PNC, PNR Circuit Boards
9-1 Remove the lower case assembly. (See procedure 1.)
9-2 Remove the two (2) screws marked [80B]. (Fig.2)
9-3 Remove the screw marked [100B]. The 16N keyboard
assembly and the lower key bed assembly can then be
removed. (Fig.3)
7. PSWシート
（所要時間：約3分）
7-1 下ケースAss'yを外します。（1項参照）
7-2 [380C]のネジ2本を外し、PSWシートを外し ま す。（図3）
7-3 PSWシートからプッシュツマミ（黒)を外します 。（図2）
8. TWシート、スピーカ（ツイーター）
（所要時間：各約3分）
8-1 下ケースAss'yを外します。（1項参照）
8-2 [380D]のネジ2本を外し、スピーカ（ツ イー タ ー）を外 し ます。
（図3）
*左右のツイーターは、それぞれ同じ方法で外すことができ ま
す。
9. ホイールAss'y、PB、MVR、PNL、PNC、PNR
シート
9-1 下ケースAss'yを外します。（1項参照）
9-2 [80B]のネジ2本を外します。（図2）
9-3 [100B]のネジ1本を外し、16N鍵盤Assy、下ケ ー ス 鍵盤
Ass'yを外します。（図3）
9-4 Wheel Assembly, PB Circuit Board
(Time required: About 4 minutes each)
9-4-1 Remove the two (2) screws marked [380G]. The wheel
assembly with the PB circuit board can then be removed.
9-4-2 Remove the PB circuit board from the wheel assembly.
(Fig. 4)
9-5 MVR Circuit Board
(Time required: About 4 minutes)
9-5-1 Remove the volume knob from the control panel. (Fig.7)
9-5-2 Remove the three (3) screws marked [380H]. The MVR
circuit board can then be removed. (Fig.4)
9-6 PNL Circuit Board
(Time required: About 5 minutes)
9-6-1 Remove the thirteen (13) screws marked [380I].
The PNL circuit board can then be removed. (Fig.4)
9-4 ホイールAss'y、PBシート
（所要時間：約4分）
9-4-1 [380G]のネジ2本を外し、ホイールAss'yと共にPBシートを外
します。（図4）
9-4-2 ホイールAss'yから、PBシートを外し ま す。（図4）
9-5 MVRシート
（所要時間：約4分）
9-5-1 コントロールパネル面からボリ ュームツマミ を外 し ま す。（図7）
9-5-2 [380H]のネジ3本を外し、MVRシートを外し ま す。（図4）
9-6 PNLシート
（所要時間：約5分）
9-6-1 [380I]のネジ13本を外し、PNLシートを外 し ま す。（図4）
Volume Knob
（ツマミ（マスターボリューム））
Cloth
（布）
12
Fig.7（図7）
PSR-S550/PSR-S550B
9-7 PNC Circuit Board
(Time required: About 6 minutes)
9-7-1 Remove the AM circuit board. (See procedure 2.)
9-7-2 Remove the DM circuit board. (See procedure 4.)
9-7-3 Remove the ten (10) screws marked [380J]. The PNC
circuit board can then be removed. (Fig.4)
9-8 PNR Circuit Board
(Time required: About 5 minutes)
9-8-1 Remove the eleven (11) screws marked [380K]. The
PNR circuit board can then be removed. (Fig.4)
10. Speaker (Woofer) (Time required: About 3 minutes each)
10-1 Remove the lower case assembly. (See procedure 1.)
10-2 Remove the four (4) screws marked [40]. The speaker
(woofer) can then be removed. (Fig.3)
*The woofers L and R can be removed in the same
manner.
11. Disassembling 16N Keyboard Assembly
11-1 Remove the lower case assembly. (See procedure 1.)
11-2 Remove the two (2) screws marked [80B]. (Fig.2)
11-3 Remove the screw marked [100B]. The 16N keyboard
assembly and the lower key bed assembly can then be
removed. (Fig.3)
9-7 PNCシート
（所要時間：約6分）
9-7-1 AMシートを外し ま す。（2項参照）
9-7-2 DMシートを外し ま す。（4項参照）
9-7-3 [380J]のネジ10本を外し、PNCシートを外し ま す。（図4）
9-8 PNRシート
（所要時間：約5分）
9-8-1 [380K]のネジ11本を外し、PNRシートを外し ま す。（図4）
10. スピーカ（ウーファー）
（所要時間：各約3分）
10-1 下ケースAss'yを外します。（1項参照）
10-2 [40]のネジ 4本を 外し、スピーカ（ウー フ ァー）を外し ま す。（図3）
*左右のウーファーは 、それぞれ同 じ方法で外すことがで きま
す。
11. 16N鍵盤Ass'yの分解
11-1 下ケースAss'yを外します。（1項参照）
11-2 [80B]のネジ2本を外します。（図2）
11-3 [100B]のネジ1本を外し、16N鍵盤Ass'y、下ケー ス 鍵盤
Ass'yを外します。（図3）
11-4 White Keys and Black Keys
11-4-1 White and black keys for one octave unit are integrated
as a set. There are five sets in total.
Only the C6 white key, unlike the other keys, is not
integrated in a set. (Fig. 8)
11-4-2 To remove a set, remove the four (4) each screws marked
[120A]. The white and black keys in the set can then be
removed. (Fig. 8)
When removing, unfasten the two (2) hooks at the back
of the black keys upward, and lift the white and black
keys while pulling them toward you a little. (Fig.9)
11-4-3 To remove the white key C6, remove the screw marked
[120B], unhook as described in Procedure 11-4-2, and
pull out toward you. (Fig. 8)
11-5 Rubber Contact
11-5-1 Remove the white and black keys corresponding to the
rubber contacts to be removed. (Fig.8, Photo.1)
11-5-2 Remove the rubber contacts. (Fig.8, Photo.1)
11-6 61L Circuit Board (MK-L)
(Time required: About 7 minutes)
11-6-1 Remove the white and black keys from C1 to B3. (See
Fig.8 and Procedure 11-4.)
11-6-2 Remove the four (4) screws marked [100A] and the eight
(8) screws marked [110A]. The 61L circuit board (MK-
L) can then be removed. (Fig.8)
11-4 白鍵、黒鍵
11-4-1 白鍵、黒鍵は、左側から1オクターブ 単 位のセッ トになっ てい
て、全部で5セットあります。
C6鍵は、白鍵1個のみです。（図8）
11-4-2 セットのものは、 [120A]のネジ4本づつ外してそれぞれ1セッ
ト分の白鍵、黒鍵を外します。（図8）
この時、黒鍵の後ろ側にある2つのフックを上方向に外し、
白鍵・黒鍵を少し手前に引きなが ら持ち上げま す。（図9）
11-4-3 C6の白鍵は[120B]のネジ1本を外し、11-4-2項のようにフッ
クを外 して手前に引 きながら外 し ま す。（図8）
11-5 接点ゴム
11-5-1 外そうとする接 点ゴムに対 応した白 鍵 ・黒鍵を外します。
（図8、写真1）
11-5-2 それぞれの接点ゴムを外します。（図8、写真1）
11-6 シート61L（MK-L）
（所要時間：約7分）
11-6-1 C1〜B3の白鍵・黒鍵を外します。（図8、11-4項参照）
11-6-2 [100A]のネジ4本と[110A]のネジ8本を外し、シー ト61L
（MK-L）を外 し ます。（図8）
13
PSR-S550/PSR-S550B
Rubber Contact 12P
（接点ゴム
Lower Key Bed Assembly
（下ケース鍵盤Ass'y）
[120A]
12P
）
[100A]
[110A]
[120A]
Rubber Contact 12P
（接点ゴム
（16N-C61鍵盤Ass'y）
[120A]
12P
Keyboard Assembly
）
[120A]
[100B]
Rubber Contact 13P
（接点ゴム
61H61L
[110B]
[120A]
[120B]
13P
）
C1 C2 B2 C3 B3 C4 B4 C5 B5 C6B1
One octave
（1オクターブ）
(C1-B1)
[100]: BindHeadTappingScrew-B3.0X8MFZN2W3(WE774301)Ｂタイト＋ＢＩＮＤ
[110]: BindHeadTappingScrew-P3.0X12MFZN2W3SP(WH899400)Ｐタイト＋ＢＩＮＤ
[120]: BindHeadTappingScrew-P3.0X20MFZN2W3(WF49200R)Ｐタイト＋ＢＩＮＤ
Hook
（フック）
One octave
（1オクターブ）
(C2-B2)
One octave
（1オクターブ）
(C3-B3)
Fig.8（図8）
Rubber contact
（接点ゴム）
61H
One octave
（1オクターブ）
(C4-B4)
One octave
（1オクターブ）
(C5-B5)
C6 Key
（C6鍵）
14
Fig.9（図9）
* When installing the 61L circuit board (MK-L), tighten
the screws 1 through 12 in numerical order as shown
in the figure "61L" in Fig.10. (Fig.10)
PSR-S550/PSR-S550B
**
シシ
ーー
トト
61L61L
（（
MK-LMK-L
））
をを
取取
りり
付付
けけ
るる
時時
はは
、、
図図
1010
のの
シシ
ーー
ささ
さ
ささ
の
のの
いい
い
いい
シ
シシ
。。
。
。。
ー
ーー
トト
ト
トト
*
シ
ー
ト
61L
（
MK-L
）
を
取
り
付
け
る
時
は
、
図
締締
締
締締
はは
めめ
め
めめ
、、
図図
てて
て
てて
10
1010
下下
下
下下
**
シシ
ーー
トト
61L61L
（（
MK-LMK-L
））
をを
取取
りり
付付
けけ
るる
時時
61L61L
図図
のの
番番
号号
11
〜〜
1212
のの
順順
にに
ネネ
ジジ
61L
61L61L
（（
（
（（
図図
図
図図
図
図図
1010
10
1010
の
のの
））
）
））
番
番番
号
号号
1
〜
12
の
〜〜
1212
のの
順
順順
11
に
にに
ネ
ネネ
ジ
ジジ
をを
を
をを
11-7 61H Circuit Board (MK-H)
(Time required: About 6 minutes)
11-7-1 Remove the white and black keys from C4 to C6. (See
Fig.8 and Procedure 11-4.)
11-7-2 Remove the three (3) screws marked [100B] and the five
(5) screws marked [110B]. The 61H circuit board (MK-
H) can then be removed. (Fig.8)
*When installing the 61H circuit board (MK-H),
tighten the screws 1 through 8 in numerical order as
shown in the figure "61H" in Fig.10. (Fig. 10)
61H
11-7 シート61H（MK-H）
（所要時間：約6分）
11-7-1 C4〜C6の白鍵・黒鍵を外します。（図8、11-4項参照）
11-7-2 [100B]のネジ3本と[110B]のネジ5本を外し、シー ト61H
（MK-H）を外 し ます。（図8）
**
シシ
ーー
トト
61H61H
（（
MK-HMK-H
））
をを
取取
りり
付付
けけ
るる
時時
はは
、、
*
**
（（
（
（（
Rubber contact
（接点ゴム）
シ
ー
シシ
ーー
61H61H
61H
61H61H
図図
図
図図
ト
トト
1010
10
1010
61H
61H61H
図図
図
図図
））
）
））
のの
の
のの
（
MK-H
（（
MK-HMK-H
番番
番
番番
号号
号
号号
）
を
取
り
付
け
りり
にに
に
にに
付付
ネネ
ネ
ネネ
けけ
ジジ
ジ
ジジ
をを
を
をを
る
るる
））
をを
取取
11
〜〜
88
のの
順順
1
〜
8
の
順
11
〜〜
88
のの
順順
時
時時
締締
締
締締
は
はは
めめ
め
めめ
てて
て
てて
、
、、
図図
図
図図
下下
下
下下
1010
10
1010
ささ
さ
ささ
のの
の
のの
いい
い
いい
シシ
シ
シシ
。。
。
。。
ーー
ー
ーー
トト
ト
トト
Photo.1（写真1）
61H61L
9 678
2456
3
10 11 12
811 3 4 5 27
Fig.10（図10）
15
PSR-S550/PSR-S550B
■ LSI PIN DESCRIPTION（LSI端子機能表）
CONTENTS（目次）
●
AK4385ET (X6040A01) DAC ....................................................................................... 16
●
MN101C027YB (XS71120R) CPU ............................................................................... 16
●
R8A0232BG (X8810A00) CPU (SWX02) ..................................................................... 17
●
S1D13700F01A100 (X5422A00) LCD CONTROLLER ............................................... 19
●
UPD789022GB-A15-8E (XZ56010R) CPU (MKS) ....................................................... 19
AK4385ET (X6040A01) DAC (Digital to Analog Converter)
PIN
NAME I/O FUNCTION
NO.
1 MCLK I Master Clock 9 AOUTR- O Rch Analog out(-)
2BICK I Audio Serial Data Clock 10 AOUTR+ O Rch Analog out(+)
3 SDTI I Audio Serial Date Input 11 AOUTL- O Lch Analog out(-)
4 LRCK I L/R Clock 12 AOUTL+ O Lch Analog out(+)
5 PDN I Power Down mode 13 Vss - Ground
6 CSN I Chip Select 14 VDD - Power Supply
7 CCLK I Control Data Input 15 DZFR O Rch Data Zero Input Detect
8 CDTI I Control Data Input 16 DZFL O Lch Data Zero Input Detect
PIN
NAME I/O FUNCTION
NO.
MN101C027YB (XS71120R) CPU
PIN
NO.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
S1
S2
S3
S4
S5
VREF+
VDD
OSC2
OSC1
VSS
XI
XO
MMOD
RD0
RXD
D0
D1
D2
D3
D4
/RST
D5
D6
D7
D8
D9
S6
S7
S8
S9
S10
S11
I/O FUNCTIONNAME
I
I
I
I
I
-
-
O
I
I
O
I
O
I
O
O
O
O
O
I
O
O
O
O
O
I
I
I
I
I
I
Switch matrix data
Power supply (+5V, analog)
Power supply (+5V)
Crystal oscillator (8MHz)
Crystal oscillator (8MHz)
Ground
Not used
Not used
Memory mode select (Grounded)
Rotary encoder data
MIDI receive data
LED and switch drive data
Reset
LED and switch drive data
Switch matrix data
PIN
NO.
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
S12
S13
S14
TXD
S15
S16
S17
S18
L16
L17
L18
L19
L8
L9
L10
L11
L12
L13
L14
L15
L7
L6
L5
L4
L3
L2
L1
L0
VREF
AD0
AD1
S0
I/O FUNCTIONNAME
I
I
Switch matrix data
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
-
MIDI transmit data
I
I
Switch matrix data
I
I
LED drive data
LED and switch drive data
Grounded
Analog input
I
Analog input
I
I
Switch matrix data
DM: IC14
PNL:IC101
16
PSR-S550/PSR-S550B
R8A02032BG
PIN
OUTER
NO.
NO.
VSS
A1
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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
1
2
3
4
5
6
7
8
9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
AN2
A2
AN1
A3
VSS
A4
RxD1
A5
SCK1
A6
UCLK
A7
VSS
A8
A9
FUNC_DM
VSS
HOST_DM
POWER_ENB
XTAL
EXTAL
VSS
CS7N/PJ6
TRSTN
TDI
TCK
VCCQ
B1
MD15
B2
VSS
B3
AN3
B4
AN0
B5
VSS
B6
TxD1
B7
TxD0
B8
VSS
B9
FUNC_DP
VSS
HOST_DP
SCL
VSS
VSS
CS4N/PJ3
TIOC0A/PJ7
TESTN
TMS
VCCQ
VCCQ
C1
MD13
C2
MD14
C3
VSS
C4
VREFADC
C5
VSSADC
C6
VSS
C7
RxD0
C8
VSS
C9
VBUS
VSS
OVER_CURRENT_N
SDA
CS0N
CS2N/PJ1
CS5N/PJ4
ASEMDN
TDO
VCCQ
VDDPLL
VDDPLL
D1
MD10
D2
MD11
D3
MD12
D4
VSS
D5
VCCADC
D6
VSS
D7
RESN
D8
VCCQ
D9
PULLUP_ENB
VCCQ
UCTL
EICN
CS1N/PJ0
CS3N/PJ2
CS6N/PJ5
ASEBRKAKN
VCCQ
VCCQ
VSSPLL
(
X8810A00) CPU
I/O FUNCTIONNAME
-
Ground
I
ADC analog input 2
I
ADC analog input 1
-
Ground
I
Serial input 1
I
External sync. clock input 1
I
USB external clock input (48 MHz)
-
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
USB function data -
-
Ground
USB host data -
O
USB voltage enable
O
Crystal oscillator output
I
Crystal oscillator input (16.9344 MHz)
-
Ground
O
SH2A-CPU chip select 7
I
JTAG test reset input
I
JTAG test data input
I
JTAG test clock input
-
Power supply +3.3 V
Wave memory data bus 15
-
Ground
I
ADC analog input 3
I
ADC analog input 0
-
Ground
O
Serial output 1
O
Serial output 0
-
Ground
USB function data +
-
Ground
USB host data +
E bus (I2C) clock input/output (5V compatible)
Ground
-
O
SH2A-CPU chip select 4
O
PWM output
I
Test input
I
JTAG test mode select input
Power supply +3.3 V
Wave memory data bus 13
Wave memory data bus 14
-
Ground
-
ADC reference power supply +3.3 V
-
ADC analog ground
-
Ground
I
Serial input 0
-
Ground
I
USB cable connection monitor (5V compatible)
-
Ground
I
USB overcurrent detection (5V compatible)
E bus (I2C) data input/output (5V compatible)
O
SH2A-CPU chip select 0
O
SH2A-CPU chip select 2
O
SH2A-CPU chip select 5
I
Debug mode configuration
O
JTAG test data output
-
Power supply +3.3 V
PLL analog power supply +1.2 V
Wave memory data bus 10
Wave memory data bus 11
Wave memory data bus 12
-
Ground
-
ADC analog power supply +3.3 V
-
Ground
I
Hardware reset
-
Power supply +3.3 V
O
USB pull-up enable
-
Power supply +3.3 V
I
USB output control
O
E bus reset output
O
SH2A-CPU chip select 1
O
SH2A-CPU chip select 3
O
SH2A-CPU chip select 6
Emulator break
Power supply +3.3 V
-
-
PLL analog ground
(
SWX02)
PIN
NO.
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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
OUTER
NO.
D20
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
E16
E17
E18
E19
E20
F1
F2
F3
F4
F5
F16
F17
F18
F19
F20
G1
G2
G3
G4
G5
G16
G17
G18
G19
G20
H1
H2
H3
H4
H5
H16
H17
H18
H19
H20
J1
J2
J3
J4
J5
J9
J10
J11
J12
J16
J17
J18
J19
J20
K1
K2
K3
K4
K5
K9
K10
K11
K12
K16
K17
K18
K19
K20
VSSPLL
MD6
MD7
MD8
MD9
VDD
VDD
VSS
VCCQ
VSS
VCCQ
VCCQ
VSS
VCCQ
VSS
VDD
VDD
D31/PF7
D30/PF6
D29/PF5
D28/PF4
MD2
MD3
MD4
MD5
VDD
VDD
D27/PF3
D26/PF2
D25/PF1
D24/PF0
MA2
MA1
MD0
MD1
VSS
VSS
D23/PE7
D22/PE6
D21/PE5
D20/PE4
MA6
MA5
MA4
MA3
VCCQ
VCCQ
D19/PE3
D18/PE2
VCCQ
VCCQ
MA10
MA9
MA8
MA7
VSS
VSS
VSS
VSS
VSS
VSS
D17/PE1
D16/PE0
CKOEN
CKIO
MA14
MA13
MA12
MA11
VDD
VSS
VSS
VSS
VSS
VDD
CKE
D15
VSS
VSS
I/O FUNCTIONNAME
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
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
I/O
I/O
O
O
O
O
I/O
I/O
O
O
O
O
O
O
I/O
PLL analog ground
Wave memory data bus 6
Wave memory data bus 7
Wave memory data bus 8
Wave memory data bus 9
Power supply +1.2 V
Ground
Power supply +3.3 V
Ground
-
Power supply +3.3 V
Ground
Power supply +3.3 V
Ground
-
Power supply +1.2 V
SH2A-CPU data bus 31
SH2A-CPU data bus 30
SH2A-CPU data bus 29
SH2A-CPU data bus 28
Wave memory data bus 2
Wave memory data bus 3
Wave memory data bus 4
Wave memory data bus 5
Power supply +1.2 V
SH2A-CPU data bus 27
SH2A-CPU data bus 26
SH2A-CPU data bus 25
SH2A-CPU data bus 24
Wave memory address bus 2
Wave memory address bus 1
Wave memory data bus 0
Wave memory data bus 1
Ground
SH2A-CPU data bus 23
SH2A-CPU data bus 22
SH2A-CPU data bus 21
SH2A-CPU data bus 20
Wave memory address bus 6
Wave memory address bus 5
Wave memory address bus 4
Wave memory address bus 3
Power supply +3.3 V
SH2A-CPU data bus 19
SH2A-CPU data bus 18
Power supply +3.3 V
Wave memory address bus 10
Wave memory address bus 9
Wave memory address bus 8
Wave memory address bus 7
-
-
Ground
-
-
SH2A-CPU data bus 17
SH2A-CPU data bus 16
Clock output control for SDRAM
I
Clock output for SDRAM
Wave memory address bus 14
Wave memory address bus 13
Wave memory address bus 12
Wave memory address bus 11
Power supply +1.2 V
-
-
Ground
-
Power supply +1.2 V
Clock enable for SDRAM
SH2A-CPU data bus 15
Ground
-
DM: IC7
17
PSR-S550/PSR-S550B
PIN
NO.
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
OUTER
NO.
MA15
L1
MA16
L2
MA17
L3
MA18
L4
VDD
L5
VSS
L9
VSS
L10
VSS
L11
VSS
L12
VDD
L16
L17
L18
L19
L20
M10
M11
M12
M16
M17
M18
M19
M20
N16
N17
N18
N19
N20
P16
P17
P18
P19
P20
R16
R17
R18
R19
R20
T10
T11
T12
T13
T14
T15
T16
T17
T18
T19
T20
D11
D12
D13
D14
MA19
M1
MA20
M2
MA21
M3
MA22
M4
VSS
M5
VSS
M9
VSS
VSS
VSS
VSS
D10
N1
MA23/PG4
N2
MA24/PG5
N3
MA25/PG6
N4
MA26/PG7
N5
VCCQ
VCCQ
P1
MCS3N/PG3
P2
MCS2N/PG2
P3
MCS1N/PG1
P4
MWRN/PG0
P5
VSS
VSS
RD/WRN
R1
MCS0N
R2
MRDN
R3
BTCHG
R4
PA0
R5
VDD
VDD
WE3N/DQMUU/PH3
RASLN
CASLN
RDN
T1
PA1
T2
PA2
T3
PA3
T4
PA4
T5
VDD
T6
VDD
T7
VSS
T8
VCCQ
T9
VSS
VCCQ
VCCQ
VSS
VCCQ
VSS
VDD
VDD
A0/PH4
WE0N/DQMLL/PH0
WE1N/DQMLU/PH1
WE2N/DQMUL/PH2
U1
PA5
D7
D8
D9
D3
D4
D5
D6
D0
D1
D2
I/O FUNCTIONNAME
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
PIN
NO.
O
Wave memory address bus 15
O
Wave memory address bus 16
O
Wave memory address bus 17
O
Wave memory address bus 18
-
Power supply +1.2 V
-
Ground
-
-
-
Power supply +1.2 V
SH2A-CPU data bus 11
SH2A-CPU data bus 12
SH2A-CPU data bus 13
SH2A-CPU data bus 14
O
Wave memory address bus 19
O
Wave memory address bus 20
O
Wave memory address bus 21
O
Wave memory address bus 22
-
-
Ground
-
-
SH2A-CPU data bus 7
SH2A-CPU data bus 8
SH2A-CPU data bus 9
SH2A-CPU data bus 10
O
Wave memory address bus 23
O
Wave memory address bus 24
O
Wave memory address bus 25
O
Wave memory address bus 26
Power supply +3.3 V
SH2A-CPU data bus 3
SH2A-CPU data bus 4
SH2A-CPU data bus 5
SH2A-CPU data bus 6
O
Wave memory chip select 3
O
Wave memory chip select 2
O
Wave memory chip select 1
O
Wave memory write enable
Ground
-
O
SH2A-CPU read/write enable
SH2A-CPU data bus 0
SH2A-CPU data bus 1
SH2A-CPU data bus 2
O
Wave memory chip select 0
O
Wave memory read enable
I
BOOT ROM switching control
Parallel port A0
Power supply +1.2 V
-
O
Writing byte of D31 - D24/Selecting D31 - D24 in case of SDRAM
O
RAS output for SDRAM
O
CAS output for SDRAM
O
SH2A-CPU read enable
Parallel port A1
Parallel port A2
Parallel port A3
Parallel port A4
Power supply +1.2 V
-
-
Ground
-
Power supply +3.3 V
-
Ground
Power supply +3.3 V
-
-
Ground
-
Power supply +3.3 V
-
Ground
Power supply +1.2 V
-
O
SH2A-CPU address bus 0
O
Writing byte of D7 - D0/Selecting D7 - D0 in case of SDRAM
O
Writing byte of D15 - D8/Selecting D15 - D8 in case of SDRAM
O
Writing byte of D23 - D16/Selecting D23 - D16 in case of SDRAM
Parallel port A5
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
OUTER
NO.
U2
U3
U4
U5
U6
U7
U8
U9
U10
U11
U12
U13
U14
U15
U16
U17
U18
U19
U20
V1
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14
V15
V16
V17
V18
V19
V20
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10
W11
W12
W13
W14
W15
W16
W17
W18
W19
W20
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y17
Y18
Y19
Y20
PA6
PA7
VCCQ
ED1/PC1
ED5/PC5
ED9/PD1
ED13/PD5
EA2/PK1
ECSN
BCLK
IRQ0
A25
A21
A17
A13
VCCQ
A3
A2
A1
PB0
PB1
VCCQ
PB6
ED2/PC2
ED6/PC6
ED10/PD2
ED14/PD6
EA3/PK2
SDI0/PK5
WCLK2/SDO2
IRQ1
BW_MD0
A22/PH5
A18
A14
A10
VCCQ
A5
A4
PB2
VCCQ
PB4
PB7
ED3/PC3
ED7/PC7
ED11/PD3
ED15/PD7
ERDN/PK3
SDI1/PK6
WCLK
SYSCLK2
WAITN/PK7
A23/PH6
A19
A15
A11
A8
VCCQ
A6
VCCQ
PB3
PB5
ED0/PC0
ED4/PC4
ED8/PD0
ED12/PD4
EA1/PK0
EWRN/PK4
SDO0
SDO1
SYSCLK
SYI
A24/PH7
A20
A16
A12
A9
A7
VCCQ
I/O FUNCTIONNAME
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
Parallel port A6
Parallel port A7
-
Power supply +3.3 V
External CPU data bus 1
External CPU data bus 5
External CPU data bus 9
External CPU data bus 13
I
External CPU address bus 2
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
External CPU chip select
Bit clock output
I
Interrupt input 0
SH2A-CPU address bus 25
SH2A-CPU address bus 21
SH2A-CPU address bus 17
SH2A-CPU address bus 13
-
Power supply +3.3 V
SH2A-CPU address bus 3
SH2A-CPU address bus 2
SH2A-CPU address bus 1
Parallel port B0
Parallel port B1
-
Power supply +3.3 V
Parallel port B6
External CPU data bus 2
External CPU data bus 6
External CPU data bus 10
External CPU data bus 14
I
External CPU address bus 3
I
Serial audio input 0
Word clock output 2/Serial audio output 2
I
Interrupt input 1
I
SH2A-CPU data bus width configuration
SH2A-CPU address bus 22
SH2A-CPU address bus 18
SH2A-CPU address bus 14
SH2A-CPU address bus 10
-
Power supply +3.3 V
SH2A-CPU address bus 5
SH2A-CPU address bus 4
Parallel port B2
-
Power supply +3.3 V
Parallel port B4
Parallel port B7
External CPU data bus 3
External CPU data bus 7
External CPU data bus 11
External CPU data bus 15
I
External CPU read enable
I
Serial audio input 1
Word clock output
Clock output 2
I
External wait input
SH2A-CPU address bus 23
SH2A-CPU address bus 19
SH2A-CPU address bus 15
SH2A-CPU address bus 11
SH2A-CPU address bus 8
-
Power supply +3.3 V
SH2A-CPU address bus 6
-
Power supply +3.3 V
Parallel port B3
Parallel port B5
External CPU data bus 0
External CPU data bus 4
External CPU data bus 8
External CPU data bus 12
I
External CPU address bus 1
I
External CPU write enable
Serial audio output 0
Serial audio output 1
Clock output
I
Sync. input from external device
SH2A-CPU address bus 24
SH2A-CPU address bus 20
SH2A-CPU address bus 16
SH2A-CPU address bus 12
SH2A-CPU address bus 9
SH2A-CPU address bus 7
-
Power supply +3.3 V
18
PSR-S550/PSR-S550B
S1D13700F01A100 (X5422A00) LCD CONTROLLER
PIN
NO.
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
VSS
AB12
AB11
AB10
AB9
AB8
HIOVDD
AB7
AB6
AB5
AB4
COREVDD
AB3
AB2
AB1
AB0
VSS
FPDAT3
FPDAT2
FPDAT1
FPDAT0
NIOVDD
FPSHIFT
XECL
COREVDD
FPLINE
MOD
VSS
YSCL
FPFRAME
YDIS
NIOVDD
I/O FUNCTIONNAME
I
I
I
I
I
I
I
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
Ground
Address bus
Power supply
Address bus
Power supply
Address bus
Ground
Data bus
Power supply
Shift clock
X driver enable chain clock
Power supply
Latch pulse
Frame signal
Ground
Scan shift clock
Scan start pulse
LCD power-down output
Power supply
PIN
NO.
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
XCD1
XCG1
RESET#
SCANEN
TESTEN
CLKI
COREVDD
RD#
WR#
CS#
DB7
DB6
DB5
DB4
HIOVDD
DB3
DB2
DB1
DB0
VSS
WAIT#
HIOVDD
CNF0
CNF1
CNF2
CNF3
CNF4
AS#
AB15
AB14
AB13
I/O FUNCTIONNAME
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
DM: IC4
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Ground
Drain output
Gate input
Reset
Test mode set up input
Externally sourced system clock
Power supply
Read strobe
Write strobe
Chip select
Data bus
Power supply
Data bus
Ground
Wait output
Power supply
Input pin for S1D 13700 setting
Address strobe
Address bus
UPD789022GB-A15-8E (XZ56010R) CPU (MKS)
PIN
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
P47/KR7
P46/KR6
P45/KR5
P44/KR4
P43/KR3
P42/KR2
P41/KR1
P40/KR0
VSS0
VDD0
/RESET
P51/TO2
P50/TI0/TO0
P12
P11
P10
NC
IC
X2
X1
P53
P52
I/O FUNCTIONNAME
I/O
I/O
Port 1
I/O
I/O
I/O
I/O
I/O
Port 4/Key return signal detection input
I/O
I/O
I/O
I/O
Internally connected (N.C.)
Clock
I
Ground
Power supply
System reset
I
I/O
Port 5
I/O
Port 5/16-bit timer output
I/O
Port 5/External count clock input to 8-bit timer/8-bit timer output
I/O
PIN
NO.
23
P32/INTP2/CPT2
P31/INTP1
24
P30/INTP0
25
26
P22/RXD/SI0
27
P21/TXD/SO0
28
P20/ASCK//SCK0
P07
29
P06
30
P05
31
P04
32
P03
33
P02
34
P01
35
P00
36
NC
37
VDD1
38
VSS1
39
P17
40
41
P16
42
P15
43
P14
44
P13
DM: IC17
I/O FUNCTIONNAME
Port 3/External interrupt input/Capture edge input
I/O
I/O
Port 3/External interrupt input
I/O
Port 2/Asynchronous serial interface serial data input/Serial interface serial data input
I/O
Port 2/Asynchronous serial interface serial data output/Serial interface serial data output
I/O
Port 2/Asynchronous serial interface serial clock input/Serial interface serial clock
I/O
I/O
I/O
I/O
I/O
Port 0
I/O
I/O
I/O
I/O
Power supply
Ground
I/O
I/O
Port 1
I/O
I/O
I/O
19
PSR-S550/PSR-S550B
■ IC BLOCK DIAGRAM（IC ブロック図）
SN74LV08APWR (X4463A00)
DM: IC13
SN74AHCT08PWR (X3824A00)
DM: IC24
Quad 2 Input AND
1
VSS
1A
1B
2
1Y
3
4
2A
5
2B
6
2Y
7
14
VDD
4B
13
4A
12
11
4Y
10
3B
9
3A
8
3Y
LA4625 (XY209A0R)
Power Amplifier 13.5W
AM: IC201
DC
2
RIPPLE
FILTER
PREDRIVER
+
1
IN1
PRE-GND
STBY
IN2
IN
-
BIAS
3
CIRCUIT
STANDBY
4
SW
+
6
IN
-
POP NOISE
PREVENTION
CIRCUIT
5
ON TIME POP
PREDRIVER
PREDRIVER
PREDRIVER
OVER VOLTAGE/
SURGE
THERMAL
SHUT DOWN
7
POWER
POWER
POWER
POWER
SN74LV14APWR (X6688A0R)
Hex Inverter
DM: IC20
LOAD SHORT
PROTECTOR
LOAD SHORT
PROTECTOR
OUTPUT PIN TO V
SHORT PROTECTOR
OUTPUT PIN TO GND
SHORT PROTECTOR
V
CC
OUTPUT PIN TO GND
SHORT PROTECTOR
OUTPUT PIN TO V
SHORT PROTECTOR
V
GND
CC
14
1A
1Y
2A
2Y
3A
3Y
POWER
GND1
POWER
GND2
CC
CC
1
2
3
4
5
6
7
13
-OUT1
12
PWR-GND1
11
+OUT1
-OUT2
9
10
PWR-GND2
8
+OUT2
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
NJM4580E(TE2) (X2331A0R)
Dual Operational Amplifier
DM: IC16
Output A
Inverting
Input A
Non-Inverting
Input A
-DC Voltage Supply
1
2
3
4-V
+-
+-
+DC Voltage
8
+V
Supply
7
Output B
Inverting
6
Input B
Non-Inverting
5
Input B
MC34063EBD-TR (X7371A00)
DC-DC Converter
DM: IC19
Drive
Collector
I
pk
Sense
V
CC
Comparator
Inverting
Input
8
7
6
5
I
pk
Oscillator
Comparator
+
±
SQ
R
C
T
100
Reference
Regulator
1
Q2
Q1
2
3
1.25 V
4
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
R5520H001B-T1-F
USB High-Side Power Switch
DM: IC18
EN
1 5
2
GND
3
FLG
20
(X7569A00)
OUT
4
IN
4
IN
UVLO
THERMAL
GATE
CONTROL
1
EN
SHUTDOWN
CURRENT
LIMIT
FLAG
DELAY
2
GND
5
OUT
3
FLG
■ CIRCUIT BOARDS（シート基板図）
CONTENTS（目次）
●
61H Circuit Board (X2335C0) ....................................................................................... 32
●
61L Circuit Board (X2336B0) ........................................................................................ 32
●
AM Circuit Board (X7722C0) ........................................................................................ 24
●
DM Circuit Board (X9574B0) ........................................................................................ 22
●
ENC Circuit Board (X7722C0) ...................................................................................... 25
●
JACK Circuit Board (X7722C0) ..................................................................................... 25
●
MVR Circuit Board (X7722C0) ...................................................................................... 24
●
PB Circuit Board (X7722C0) ......................................................................................... 24
●
PNC Circuit Board (X7978B0) ...................................................................................... 28
●
PNL Circuit Board (X7723D0) ....................................................................................... 26
●
PNR Circuit Board (X7978B0) ...................................................................................... 30
●
PSW Circuit Board (X7722C0) ..................................................................................... 25
●
TW Circuit Board (X7722C0) ........................................................................................ 25
PSR-S550/PSR-S550B
Note: See parts list for details of circuit board component parts.
注：シートの部品詳細はパーツリストをご参照ください。
21
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