Technics SX-PX201 User manual

ORDER NO. EMID941564
Service Manual
injury or death,
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a
product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any
attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious
PCM Digital Piano
SX-PX201/201M
{M), {MC}, (XM), (EN), (EH), (EF), (EZ), (EW), (EA),
(EP), (EK), (XL), (XR), (XS), (XD), (X), (XT)
: USA. {EP): Spain,Portugal =
(MC): Canada (EK): the United Kingdom
(XM): Mexico {XL); New Zealand
Norway, Sweden, {XR): Australia
Denmark, Finland {XS): Malaysia, Singapore
Holland, Belgium (XD); Saudi Arabia
France, Italy (X): Hong Kong, the
: Germany Philippines, Thailand
: Switzerland (XT): Taiwan
Austria
2S WARNING
$$ |
Mi Specifications
KEYBOARD 88 KEYS (MAX. POLYPHONIC 32 NOTES)
SOUNDS: GRAND PIANO, UPRIGHT PIANO, E PIANO 1, E PIANO 2, HARPS!, PIPE ORGAN
PEDAL SOFT/SOSTENUTO, SUSTAIN
DIGITAL CELESTE ie)
DIGITAL REVERB
QO (ROOM, STAGE, HALL)
TOUCH SENSITIVITY
LIGHT, NORMAL, HEAVY
TRANSPOSE G-C-F#
TUNING 427.3-440,0-453.0 Hz
DEMO {e)
MIDI MULTI TIMBRE, LOCAL CONTROL, OMNI ON, PROGRAM CHANGE, TRANSPOSE
MODE SET PIANO TUNING, MINIMUM RANGE, SOSTENUTO.
POWER SWITCH, MAIN VOLUME, MIDI TERMINALS (IN, OUT, THRU), PEDAL IN,
OTHERS AUX IN (R/R4L, L), LINE OUT (R/R+L, L}, PHONES 2, AC IN, INITIAL KEY
OUTPUT 20w X 2
SPEAKERS 14cm X 2
POWER REQUIREMENT
145 W, 90 W (NORTH AMERICA AND MEXICO}
AC 120/220/240 V “50/60 Hz
AC120V 60Hz (NORTH AMERICA AND MEXICO)
AC 230V —50/60Hz {NEW ZEALAND AND EUROPE EXCEPT FOR UNITED KINGDOM)
AC 230-240 V__50/60Hz {UNITED KINGDOM)
- © 1994 Matsushita Electric Industrial
ecnnics
GO.
LTD.
Al
igh
eceved
Unauthorized copying and distribution
is a violation of law. H

DIMENTIONS (WX HX D} 137.3 cm X 97.3 om X 45.3.om (54-1/18" X 38-5/16" X17-27/32")
NET WEIGHT 44 Kg (97.0 lbs)
ACCESSORIES MUSIC STAND, AC CORD, STAND
“Specifications are subject to change without notice for further improvement.
CONTENTS
@ INTRODUCTION i SCHEMATIC DIAGRAMS
SAFETY PRECAUTION .....
HOW TO ASSEMBLE THE PIANO.
KEYBOARD RANGES
INITIAL SETTING....
ARRANGEMENT OF CONTROL PANEL
BASIC FUNCTIONS
WIRING CONNECTION DIAGRAM
BLOCK DIAGRAM
RAINE MAIN P.C. Board ..
MAIN P.C. Diagram ..
AS/ACP/HP P.C. Board ..... I-13
AS/ACP/HP P.C. Diagram . I-17
TERMINALS ..... CP/PKB P.C. Diagram
PARTS LOCATION .... CP/PKB P.C. Board
DISASSEMBLY INSTRUCTIONS MKB1/2...
SYMPTOMS WHICH APPEAR JACK...
ABOUT THE SELF-DIAGNOSTIC FUNCTION
MIDI IMPLEMENTATION CHART
PRECAUTIONS BEFORE SERVICING...
TO BE SIGNS OF TROUBLE...
@ REPLACEMENT PARTS LIST
P.C. Board/WIRING ....
CABINET PARTS LOCATION ..
CABINET/CHASSIS PARTS
PACKING ......
SAFETY PRECAUTION
@ Safety Precaution
ORON=
. Before servicing, unplug the power cord to prevent an electric shock.
. When replacing parts, use only the manufacturer's recommended components for safety.
. Check the condition of the power cord. Replace if wear or damage is evident.
. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc..
. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent
the customer from being exposed to a shack hazard.
@ Insulation Resistance Test
1.
2.
3.
Unplug the power cord and short the prongs of the plug with a jumper wire.
Turn on the power switch.
Measure the resistance value with an ohmmeter between the
jumpered AC plug and each exposed metal cabinet part, such
as screw heads, connectors, contro! shafts, handle brackets,
etc..Measurements should range from 4 MQ to infinity for all
exposed. parts.
Exposed
metal
part
Ohmmeter
Resistance = 4M. to ©

HOW TO ASSEMBLE THE PIANO
KEYBOARD RANGES
To prevent the piano unit from falling off the stand, secure it firmly with the screws.
pilebais,
4 brass-colored screws.
Side panel
: . Pedal box
Screw (Brass-colored)
[Fig. 1]
Assemble the side paneis and the pedal box with the B]
Place the piano unit on the stand and secure it to the
stand.
(Black: PX201/
Brown: PX201M) 1 C4; Es | Giti Bis! Diet Far! Azs
wl Ds Fe Ais Cte Eo Ges Bar Dso Fas Aor Cao Eas Gar Bot Dea Fer Ast Cea Eee Gn Bro Dre Fox Kes Coo
[Fig. 3]
a
rs
(2) Place the stand upright. Secure the crossboard to the
front of the L-shaped brackets with 4 screws.
Crossboard
(Black: PX201/
|| Brown: PX201M)
L-shaped brackets
IFig. 2]
Connect the pedal cord and power cord to their
sockets located rear of the piano unit as shown below.
| Dt Gite (rz ize Atzs
Dts
“© Middle ©
a iy Re
Fees mig Diss Goo jes P70 Ata 79 Goa Gio ges
Aisa | Disa iGtas:
CAE A A A i
Ces; E52; Gos, Boo) Dao! Fas! Aso’ Cs2| Ese; Gsoi Bes} Des! Foo Aza, Cre! Exo] Gas: Ber:
Power cord
INITIAL SETTING
Wf INITIAL SETTING
2. Press the INITIAL key.
[Fig. 4]
1. While pressing the MODE SET button.
The initia! setting function is used to return to the original factory settings, and to reset the customer settings and misoperations.
The selected sound and various functions, MIDI settings are inttialized with this operation.
|
Press the INITIAL key while the MODE SET button is presse Or turn on the POWER switch while pressing the INITIAL kay.

ARRANGEMENT OF CONTROL PANEL
exes a0 CD Geodon O O
2. oa
a)
Ht
BASIC FUNCTIONS
@ DEMO
Automatic demonstration performances stored in the
piano’s memory introduce the various sounds available.
Listen to all the demonstration tunes in-order, or listen to
the demo tune of a specific sound.
@ MODE'SET, @ INITIAL KEY
Used when selecting functions to set or adjust, including
type of piano tuning, minimum range (volume), sostenuto,
initialization, plus all settable MIDI functions.
elf the INITIAL KEY is pressed while the MODE SET
button is depressed, the settings of the buttons, etc, will
return to the initialized settings made by the manufac-
turer.
@ TRANSPOSE
Cis the standard setting, but you can raise or lower the
key of the entire instrument within a one-octave range
with these two buttons. The butions are also used for
adjusting the volume balance of mixed sounds.
@ souNnD :
Select from 6 different sounds for the piano. You can mix
sounds by selecting two simultaneously. All sounds
feature Touch Response.
@ DIGITAL CELESTE :
Apply a celeste effect to give the sound greater depth. The
setting is memorized independently for each sound.
@ DIGITAL REVERB
Add a reverb effect to the sound. Choose one of three
different echo types. The setting is memorized indepen-
dently for each sound.
@ TOUCH SENSITIVITY
Choose LIGHT, NORMAL or HEAVY keyboard touch
(Touch Response) to match your type of playing
O
© Sustain Pedal
The sound is sustained when a key is released while this
‘ pedal is depressed. For GRAND PIANO and UPRIGHT
PIANO sounds, the tones of the 17 rightmost keys are
automatically sustained.
@ Soft pedal
Press the pédal for softer, muted sound. It can. also be
used as a sostenuto pedal. When used as a sostenuto
, pedal, and PIPE ORGAN is selected, the tones continue
; to sound for as long as the pedal is depressed.
© Sustain pedal
@ Soft pedal

TERMINALS ee HTP
{on the rear panel)
‘AUX IN
Beo DB
LINE OUT
LINE OUT (output level 1.5 Vrms, 600 9). . PEDAL IN.
By plugging into an extemal high*power. amp! ‘t
can be reproduced at a high me. Or connect a tape re-
corder and use them as recording terminals. To output mon-
aural sound, connect the external equipment to the R/R+L
terminal. (Do not connect the L terminal. }.
rom the:inclided stand to this terminal.
PHONES ({}) X2
For silent practice, headphones may be used. When puaged
AUX IN (input level 0.5 Vrms, 6 KQ)
Other instruments such asa’ rhythm machine or sound
module can be connected to the piano so that the sound is
output from the piano. To récéive monaural sound, connect
the other instruments to the R/R+L terminal. (Do not connect
the L terminal. )
MIDI (Musical Instrument Digital Interface)
MIDI is the standard specification that enables connection to
equipment such as synthesizers and personal computers.
IN: The terminal that receives data from external equip-
ment.
OUT: The terminal that transmits data from this instrument
to external equipment.
THRU: The terminal that transfers data from the IN termina!
directly to other equipment.
* Use a 5-pin DIN cord (less than 15 m long) for these connec-
tions.

PARTS
LOCATION
alan
Control Panel P.C.B. Amp & Power Supply P.C.B.
Jack P.C.B. AC Power Supply P.C.B.
? 2 : 5 ; waeme Speaker
Main P.C.B, 14em, 8Q
Speaker
14cm, 8Q
Power switch
Headphones
P.C.B. (inside) AL:
Soft Pedal
[Photo-1]

DISASSEMBLY INSTRUCTIONS
Removing the top cover
1. Remove the music stand.
2, Remove the top cover holding screws (@ 4 pcs.}.
3. Slide the top cover forward and lift up.
[Fig.5]
nN
Removing the control panel
1. Remove the top cover (see Step
2. Remove the control panel holding screws (@ 3 pcs.).
3, Remove'the control panel as shown in Fig.’6:
Main volume knob*
Control panel
Removing the CP P.C.B.
4. Remove the control panel (see Step 2).
2, Remove the main volume knob.
3. Remove the CP P.C.B. mounting screws (@ 6 pes.).
Ey
[Fig.6]
>
[4] Removing the contro! panel ornament
1.Remove the control panel (see Step [2)).
2, Remove the CP P.C.B. (see Step [3)).
3. Release the control panel omament holding claws,
[Fig.7]

Removing the keyboard assembly
1. Remove the control panel (see Step [2).
2, Remove the keyboard assembly holding screws
located on the bottom of the cabinet (® 10 pes.).
Keyboard Assembly
Ee
Keys (s)
Disassembly
1. Remove the keyboard assembly (see Step [5)).
2. To release the key claw.
© Press the front of the key downward slightly.
© Press the rear of the key forward gently.
3. To remove the key, lift as shown-in Fig. 9.
NOTE:
« The key claw is easily broken. Do not apply undue
force. Should a key claw break, it can still be used;
however, a replacement is recommended,
* Ifa black key is to bereplaced it is necessary to
remove both adjacent white keys.
[Fig.9]
Assembly
1. Insert the front part of the key into the chassis.
2. Insert the plate spring into the hammer notch as
shown in Fig. 10.
3. While slowly lowering the key into the chassis, insert
the plate spring into the notch at the rear of the key.
4, Carefully insert the key into the opening in the chassis
and slide the key towards the rear to lock it in place.
[Fig.10]

7| Removing the printed circuit boards
«Remove the top cover (see Step [1]. HGiP.c.s.
P.C.B.
1,
Remove
the
keyboard
assembly
(see
Step[5)}.
1. Remove the MAIN P.C.B. mounting screws (@ 2 pes.). 2. Remove the headphone jack mounting nuts (@ 2
2. Release the claws of the P.C.B. holders... pes.)}:
HEGHp.c.B.
P.C.B.
4. Remove the AS P.C.B. mounting screws (@ 2 pes.). + Release the claws of the AC IN connector bracket.
2. Release the claws of the P.C:B. holder. :
P.C.B.
1.. Remove the JACK P.C.B. mounting screws (@ 3 pes.).
2. Remove the jack panel mounting screws (® 2 pes.).
P.C.B..
[Fig.11]
SYMPTOMS WHICH APPEAR TO BE SIGNS OF TROUBLE.
Phenomenon Remedy
No sound is produced when the keyboard is played. «No sound is produced if the MAIN VOLUME is set to MIN.
Use the sliding control to set the volume to an appropriate
level.
*if the MIDI LOCAL CONTROL is set to off, set it to on.
MAbout the back-up memory
The selected sound and various functions, and MID! settings remain in the memory for about 30 minutes after the POWER is
turned off. ff you wish to return all memories and settings to their factory preset status, while pressing the MODE SET button,
press the INITIAL key on the keyboard. Or, press the POWER on and hold the INITIAL key at the same time.
1-10

ABOUT THE SELF-DIAGNOSTIC FUNCTION
This modei has some self-diagnostic capabilities. When set to the seli-diagnostic mode, eperaonot of various components can be
veritied by following the procedures in the chart below-*.
No. PCB TEST MODE | fe Procedure
1 MAIN RAM (IC4), ROM (C3) check 1. Connect the CHECKING DEVICE (refer to page I-12) to CN 7 on the
.. MAIN P.C.B., and turn on the CHECKING DEVICE switch,
2. Tum on the power. switch.
When the power switch is turned on, the LED of the CHECKING DEVICE flashes 8 times. The first 4
flashes are for the RAM check, and the latter 4 flashes are for the ROM check. The order of the LED
flashes corresponds to the respective IC numbers as shown below. If an IC is defective, the corresponding
flash time is longer.
Examples 1 RAM 1 F ROM ;
ake 5 er ee a2 AT DS 24
1, RAM OK, ROM OK ————+ @ @@ @ ee @e@
paces ‘ 1
' 1
2. RAM OK, ROM (iC3) defective ————+ @ @ @e©e =~eee
1 1
' '
3: RAM (IC7) defective, ROM.OK : —--—+» = e0@ @e ee ¢e
:
t
=
ae Ice
NOTE : @ indicates short flash time = OK c les
== indicates long flash time’=.Defective
2 MAIN V53 Gate Array (IC2) check Press and hold the two C keys shown below, and then turn on the
power switch.
f 7
it HE i
| ees}
Ckeys
Monitor pins 46-48 {(DL6-DL4) of IC2 on an 45V
4 oscilloscope, and check whether incremental data :
(see figure) is output.
2 od
wef eg ey ony ‘ 058009. .
3° f°" CP» "| Gate array (IC1) check 1 Connect the CHECKING DEVICE to CN 7 on the WAIN P ai B.
(The Checking Device switch should be off).
2. Press and hold the two D keys shown below, and thenturn on the
power switch.
When the power switch is tured on, the LED of the CHECKING DEVICE flashes 4 times. The order of the .
LED flashes corresponds to the CPU (IC) on the respective P.C.B..s as shown below. If an IC is defective,
the corresponding flash time is longer.
i"
4
2.3
4
4,1C1
OK
——+-
ee
ee
1
2.1C1
defective
——---+
m
@
@ ©
NOTE
:
@
indicates
short
flash
time
=
OK
Gate
Array
(§C1)
= indicates long flash time = Defective

No. PCB TEST MODE Procedure
4 MAIN Wave ROM (IC7) check 1. Press and hold the two E keys shown below, and then turn on the
power switch.
2. Select the GRAND PIANO sound.
E keys
When set to the self-diagnostic mode, the Wave ROM outputs a sine wave. If no sound is produced, or
if the sound is distorted, the Wave ROM is defective.
5 cP Control Panel LED check Press and hold the two.F keys shown below, and then turn on the power
switch.
i l
Press the buttons on the control pane! and confirm that the corresponding LEDs light.
6 MKB Keyboard ROM (iC2) check Press and hold the two B keys shown below, and then turn on the:
power switch.
tt
B keys
If the keyboard ROM (IC2) is OK, one confirming beep will sound. If it is defective, several consecutive error
beeps will sound.
Bi Connection between serving CHECKING DEVICE and MAIN P.C.B.
CHECKING DEVICE
CIRCUIT
6 CN6 ' 6 CNS :
Weoddgeccoeene Eevee dddeecaccwa
Rea
4F
cr
32

MIDI IMPLEMENTATION CHART
1-13
Function Transmitted Recognized Remarks '
Basic Default 16 1-16 memorized j
Channel Changed -16 1-16
Default 3 1,3 memorized
Mode Messages i x x
| Altered j- _
Note "21-108 0-127 Hl
Number True voice cd *0-127 1
Velocity Note ON fe) oO
Note OFF x (9nH: V=0) x
After Key's x x
Touch Ch's x x
: i — oa 4
i
Pitch Bender 1 x x
7. x “Oo volume
64 (o) eo) sustain pedal
H
Control 66 fe) e) sostenuto pedal
Change
67 e) eo) soft pedal
93 re) fe} chorus. (digital celeste)
7= Ox Ox
Prog
Change True # iia aes had
ie Pecerne ee
System Exclusive fu X x 4
on
i
System Song Pos lee, x
Song Sel x x |
Common Tune x x H
System Clock x x. |
Real Time Commands x x }
iebersyeree _ 4
i
, Aux Local ON/OFF x x |
j All'Notes OFF | x fe) j
Messages Active Sense O° 23@
Reset aeoli ie> 3 x
Notes Whether or not the data for each of these items is
transmitted or received can be set.
* Charges depending on the TRANSPOSE setting.
** Effective only in the MULTI TIMBRE mode.
Mode 1: OMNI ON, POLY Mode 2: OMNI ON, MONO O: Yes
Mode 3: OMNI OFF, POLY Mode 4: OMNI OFF, MONO x: No

PRECAUTIONS BEFORE SERVICING
IE Precautions for measuring of the output waveforms.
4. The waveform was measured with a “National Digital Storage Oscilloscope VP-5730A”. Therefore the waveforms of musical
tone signals shown may differ somewhat due to the difference in the timing of triggering.
2. Since the 1/10 test probe is used, the indicated voltage value on the bottom part of each waveform photois 1/10 oftheactuah é, jie nash sant te sitozchneoi® Sy aceWiaehsgeare
value (e.g. 0.2 V/cm should be 2.0 V/cm). : i
3. To measure the waveforms, first set this unit'to the self-diagnostic mode (refer to page I-12, No. 4). The Wave ROM output will * os » i
then be output as a sine wave to facilitate the servicing check. ‘ REGS rien FREE SS SS 5: Cyr Se eS egeRee
IE important safety notice: SE eee Soieteeganascter cust sista te 7
Components identified by a A\, mark have special characteristics impotant for safety.
When replacing any of these components, use only manufacture’s specified parts:
@ Symbolic Marks
The symbolic marks for resistors and capacitors which used in this circuits are classified as foliowing TABLE-1 and TABLE-2. * = Pall ae eee ETE, AES soba tveaeeee eck
1, RESISTORS
* Resistors without symbolic mark are FIXED CARBON FILM RESISTORS (ERD-type).
+ All resistors are 1/4 WATT, +5 % TOLERANCE unless otherwise designated in schematic diagrams.
(TABLE-1) it vee tet ieee e Berea tieeeeedee
SYMBOL,
SPECIFICATION
SYMBOL
SPECIFICATION
!
©
Fixed
Carbon
Film
Resistors
®
Fixed
Metal
Film
Resistors
eagrgee
yd
Se
Aen
Pee
wines
SHAPER
YE of
Sopoes
bas
Soaeets
Tiki
e
see
Me
ree
eee Set
ey
“FLAME-PROOF”
(ERD—F—type)
~~”
|“FLAME-PROOF”
(ERX—type)
® Fixed Wire Wound Resistors F Fuse Type Fixed Meta! Oxide Film Resistors
“FLAME-PROOF" (ERF—type) “FLAME-PROOP” (ERQ-—type)
® Fixed Metal Oxide. Film Resistors. Reo Fuse Type Fixed Carbon File Resistors ft ttt esse sees ses escsesssessess
“FLAME-PROOF” (ERG—type) { aA “FLAME-PROOP” (ERD2FC—type)
Fixed Metal Film Plesistors (Prédidiggi and High Stabilly) (ERO—type)> fi
2, CAPACITORS wn
* Capacitors without symbolic mark are POLYESTER CAPACITORS. (ECOM-type, ECQG-type, £10 % Tolerance) pene ot
* Polarized capacitors without symbolic mark are Aluminum Electrolytic Capapcitors. (ECEA-type, +20 % Tolerance) . arene
{TABLE-2)
SYMBOL SPECIFICATION i TYPE
®) Non-Polarized Electrolytic Capacitors ECEA_KN_type
®) Non-Polarized Electrolytic (for Network system)- ‘ ; ECEA_Y_type gids Airis aha ube cade ae ake
@ Tantalum Solid Electrolytic Capacitors ees ECS_type :
CE) Metalized Plastic Film Capacitors (TF Series) § ECQV_type
Temperature Compensating Ceramic Capacitors ‘ es ECC_type : ata Re : fades toe oseuttiedl¥
oO High-Dielectric Constant Ceramic Capacitors ECK_type
ECR_type saceacgecteestt wbzss tewoads Peabenenees
Axial Lead Ceramic Capacitors ECB_type
Metalized Polyester Film Capacitors for Across the Line ECQ_EW_type
Aluminum Electrolytic Capacitors for Smoothing Circuit : ECES_type es
Multilayer Ceramic Chip Capacitors ECUV_type

WIRING CONNECTION Diagram Vee
} w5 GEXGVHO40708
cw) GC) terks
¢ BLK? (wat)
WEG J Ack
CN2
SPI l@4cem, 8Q sP2 4em, 8
W3 QEXGSSOBOBOB
(M, MC, XM, EZ} only
vce |
CONTROL
PANEL
WI _GEXGSSi6065A
v Q = ful
2
QEXGVH O3IO5B
cnl
MANUAL KEYBOARD | MANUAL KEYBOARD 2 co g
oy
oH
Pct
HEADPHONES
AC
POWER
CORD
1
I
2
q
3
q
4
q
5
rT
5
T
7
T
7 5

BLOCK Diagram
KEIEIN MIE MANUAL KEYBOARD CIRCUIT
Key Switchac
& lodges
Kbit Romo
os
Gate
Array
MAIN CIRCU
IT
MGR CONTROL PANEL CIRCUIT
Switches
‘m00.8 7.2
qso~Ts3
Generator
2
é
pipoaeT
ie
F EE ere
[X31 ee 1C19e4
Digita! p01 a para Prenees
vats ROY pi per Signal ort reissi *
Ly
Processor
»
vie 7
Converter
ate ae tee
bya
108 Pes Converter
vos! tes lers-2
me 1Cts-3. ica “YH
x P| ers
JACK CIRCUIT k i : on os Clock 57 icis-2
" a = bLo Shits
fs : ara ~
= 2 alt ou cre-2| |icte-3
. +,
8 —
1 8 RexyL_—-—_______| ror sg
4 tae S eo f+
d 2 wae|-—____|imwea, Eo
BE SNS = = < +8 +8 +8 ‘
= | ia
Mig!
‘our
xo
2] BB oe
Rom
caw ain
05,6.8,626
oro Date Bus
or7
‘Address Bus
vet
MAIN VOLUME
vou. vour
ue ume
Q1,2,02,3,9 e
g
sy
ov Reguiotor
a .
: :
. 7
Mines Amp
le2o-t
\e20-2
tec
Lor
AT
JACK
AUK
‘AUK
cN2
-4
70 q

MAIN P.C. Board : BLOCK Diagram
— AG POWER SUPPLY
IRCUIT st
Power Switch
Per
ac IN
CONTROL PANEL CIRCUIT
“vi
MAIN VOLUME,
190-188
AMP & POWER SUPPLY CIRCUIT
SS
CNS
:
2
ice z o
ae
Er sr] neSiouw 7
bisiier . H |
= Mating a
me a ie
8
Ova ay. a 2
= psciaties dieu scnse
wv
7
si
=
bows
ee
= Equotizing oer
ay is Mea g
Mixer
Amp
:
Tem aaa
7 e201
Reg rower
fre
ue |
+
Xt Generator
ca]
oro
xo Raat) NI
ver
go
g
Wove
ROM
Wave
ROM
4
is
7 er 05,6,8, 026 a? «eM bin (ism bt) s z
RAM ca) $ 2
Coan)
Memory
som
H
ji
Back Up H
AUXR h ?
‘Raeress Own i
HEADPHONES
AUX IN LINE out
i 5 T 6 7 I 8 9 T 10 T Hi T 12 T 3 14 T
1-4 u-5

MAIN P.C. Board
Measuring Condition
= Check Point @~@
Set to the self-diagnostic mode followings.
* While pressing two E keys (@) simultar
MAIN (SXPG214681) (COMPONENT SIDE) MAIN (FOIL SIDE) the power-switeh:
* SOUND ... GRANI
FE
*
Main
Volume.
.
Center
. sees ee Le * Keyboard..... . Ar (@)
E
@ RE
NOTES:
10'S
ICt: SVIGD70320GJ
D C2: D65012GF-A79
IC3: QSIGO3C02013
1C4: M5256BFP85LL_ a Poni
IC5: TC25540AF006
C6: D6382GF-3B9
\c?: QSIGH3C16CN9
icg: QSIGH3C16CRO
=_ IC10: HM65256BLF10
112, 13: PCM1702U
1C14: D74HC164GS
1015: D74HC11GS
Ic16: D74HCO0GS
119, 20: M5218AFP
Cc * TRANSISTORS
5 2SB941
2SC1815GR:
2SA1015-GR
2SB709AR
2SD601AQ
4 MA8047H
MA110
MA8062 9,0
MA8056
MA2062LF |
B
4 -
A
i
T
2
T
3
T
4
T
5
6
T
7
—T
8
9
T
10
T
m-6 a-7

MAIN (FOIL SIDE)
NOTES:
Measuring Condition
Check Point @~@
Set to the self-diagnostic mode followings. A
¢ While pressing two E keys ((D) simultaneously, turn on
the power switch.
* SOUND...
* Main Volum:
* Keyboard .
SVIGD70320GJ
D65012GF-A79
QS1G03C02013
M5256BFP85LL
TC25540AF006
06382GF-3B9
QSIGH3C16CN9
QSIGH3C16CRO
GRAND PIANO
Center
Ai (@)
@A, Key @E keys
(Eat Ese)
Check Point @
Set the initial setting mode (Refer to Page I -6)
" SOUND...... GRAND PIANO.
i Center
2 vow 2nes/pv
HM65256BLF10
1€12, 13: PCM1702U
1C14: D74HC164GS
1C15: D74HC11GS
IC16: D74HCO0GS
1C19, 20: M5218AFP
* TRANSISTORS
Qt: 2SB941
Q2, 3: 2SC1815GR
Q4: 2SA1015-GR
Qs: 2SB709AR D2 wow ep wero
Q6: 2SD601AQ
* DIODES
Di: MA8047H_
D3~6, 9: MA110
D7, 11: MA8062
D8: MA8056
D12: MA2062LF
BS VOW 1 Deny, ns wolv Uoeso,
5 T 8 T 9 10 T 11 12 T 13 T 14

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I-11 TI-12