Sony MDXC-8500-R Service manual
MDX-C8500R/C8500X
SERVICE MANUAL
Ver 1.2 2002.03
Photo: MDX-C8500X
Model Name Using Similar Mechanism NEW
Base Mechanism Type MG-164NV-138
Optical Pick-up Name KMS-241C
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (MDX-C8500X)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
19 watts per channel minimum continuous average power into 4ohms, 4
channels driven from 10 Hz to 20 kHz with no more than 1% total harmonic
distortion.
US Model
MDX-C8500X
AEP Model
UK Model
MDX-C8500R
Other specifications
Disc player section
MD player
Signal-to-noise ratio 90 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Laser Diode Properties
Material GaAlAs
Wavelength 780 nm
Emission Duration Continuous
Laser output power Less than 44.6 W*
* This output is the value measured at a distance
of 200 mm from the objective lens surface on
the Optical Pick-up Block.
Tuner section
FM
Tuning range 87.5 – 107.9 MHz
87.5 – 108.0 MHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 66 dB (stereo),
Harmonic distortion at 1 kHz
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
9-870-096-13 Sony Corporation
2002C0500-1 e Vehic le Company
C 2002.03 Published by Sony Engineering Corporation
72 dB (mono)
0.6 % (stereo),
0.3 % (mono)
(MDX-C8500X)
(MDX-C8500R)
AM (MDX-C8500X)
Tuning range 530 – 1,710 kHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 30 µV
Outputs Speaker outputs
Speaker impedance 4 – 8 ohms
Maximum power output 50 W × 4 (at 4 ohms)
(MDX-C8500R)
Power amplifier section
(sure seal connectors)
– Continued on next page –
FM/AM(MW/LW) MINIDISC PLAYER
General
Outputs Audio outputs
Power requirements 12 V DC car battery
Dimensions Approx. 178 × 50 × 183 mm
Mounting dimensions Approx. 182 × 53 × 162 mm
Mass Approx. 1.2 kg (2 lb 10 oz)
Supplied accessories Card remote commander
Power antenna relay
control lead
Power amplifier control
lead
Telephone ATT control
lead
(negative ground)
1
/8 × 2 × 7 1/8 in.)
(7
(w/h/d)
1
/4 × 2 1/8 × 6 3/8 in.)
(7
(w/h/d)
RM-X91 (MDX-C8500X)
Parts for installation and
connections (1 set)
Front panel case (1)
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 3
2. GENERAL
Location of Controls ....................................................... 4
Setting the Clock ............................................................. 4
Installation....................................................................... 5
Connections ..................................................................... 7
3. DISASSEMBLY ......................................................... 11
4. ELECTRICAL ADJUSTMENTS
Test Mode........................................................................ 18
MD Section ..................................................................... 18
Tuner Section .................................................................. 18
U.S. and foreign patents licensed from Dolby
laboratories Licensing Corporation.
Design and specifications are subject to change
without notice.
5. DIAGRAMS
5-1. Block Diagram – SERVO Section –............................... 19
5-2. Block Diagram – TUNER Section – .............................. 20
5-3. Block Diagram – MAIN Section –................................. 21
5-4. Block Diagram
– DISPLAY/KEY CONTROL Section –........................ 22
5-5. Block Diagram
– BUS CONTROL/POWER SUPPLY Section –........... 23
5-6. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 24
5-7. Printed Wiring Boards
– SERVO Board (Component Side)/
SENSOR Board –............................................................ 26
5-8. Printed Wiring Board
– SERVO Board (Conductor Side) – .............................. 27
5-9. Schematic Diagram
– SERVO Board (1/2)/ SENSOR Board–...................... 28
5-10. Schematic Diagram – SERVO Board (2/2) –................. 29
5-11. Printed Wiring Board
– MAIN Board (Component Side) – .............................. 30
5-12. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................ 31
5-13. Schematic Diagram – MAIN Board (1/4) – ................... 32
5-14. Schematic Diagram – MAIN Board (2/4) – ................... 33
5-15. Schematic Diagram – MAIN Board (3/4) – ................... 34
5-16. Schematic Diagram – MAIN Board (4/4) – ................... 35
5-17. Printed Wiring Board – DSO Board – ............................ 36
5-18. Schematic Diagram – DSO Board – ............................... 37
5-19. Printed Wiring Board – SUB Board – ............................ 38
5-20. Schematic Diagram – SUB Board – ............................... 39
5-21. Printed Wiring Board – KEY Board –............................ 40
5.22. Schematic Diagram – KEY Board – .............................. 41
5-23. IC Pin Function Description ........................................... 47
6. EXPLODED VIEWS ................................................ 59
7. ELECTRICAL PARTS LIST ............................... 63
2
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right avove when
checking it for adustment. It is feared that you will lose your sight.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
(KMS-241C/J1NP)
The laser diode in the optical pick-up block may suffer electrostatic break-down easily. When handling it, perform soldering
bridge to the laser-tap on the flexible board. Also perform m easures
against electrostatic break-down suff iciently before the operation.
The flexible board is easily damaged and should be handled with
care.
• Model Identification
There are three types of main board in according of destination
for MDX-C8500R.
– MAIN BOARD (Component Side)
R502 R503
IC502
R502 R503
TYPE A a ×
TYPE B × a
TYPE C aa
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
Type A, B and C can be identified by its model number label at
the buttom of the set.
– SPECIFICATION LABEL –
TYPE A
TYPE B
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
TYPE C
3
SECTION 2
GENERAL
This section is extracted from
instruction manual.
Setting the clock
The clock uses a 12-hour digital indication.
Example: To set the clock to 10:08
1 Press (MENU), then press either side of
(DISC/PRST) repeatedly until “Clock”
appears.
1 Press (ENTER).
The hour indication flashes.
2 Press either side of (DISC/PRST) to set
the hour.
3 Press (+) side of (SEEK/AMS).
Location of controls (MDX-C8500X)
Card remote commander RM-X91
The minute indication flashes.
4 Press either side of (DISC/PRST) to set
the minute.
2 Press (ENTER).
The clock starts.
After the clock setting is completed, the
display returns to normal playback mode.
Tip
You can set the clock automatically with the RDS
feature (see page 24). (MDX-C8500R)
Note
In the initial setting, the clock indication appears
while the unit is turned off.
When you select the “on” setting of the “D.Info”
item (page 29), you can see the clock indication in
the upper part of the display while you are
enjoying any source.
The corresponding buttons of the card
remote commander control the same
functions as those on this unit.
1 OFF button
2 MENU button
3 SOURCE button
4 SEEK/AMS (cursor </,) buttons
5 SOUND button
6 DSPL button
7 ATT button
8 LIST button
9 DISC/PRST (cursor M/m) buttons
0 ENTER button
qa MODE button
qs VOL buttons
DISC
SOURCE
DISC
OPEN/CLOSE
ENTER
VOLATT
OFF
MENU LIST
SEEK SEEK
SOUND
DSPL MODE
4
56789
(MDX-C8500R)
y
(MDX-C8500X)
Connection example
Exemple de connection
Ejemplo de conexiones
*
from car antenna
de l’antenne de la voiture
de la antena del automóvil
To AMP REMOTE IN of an optional power amplifier.
This connection is only for amplifiers. Connecting any
other system may damage the unit.
Pour effectuer le raccordement à AMP REMOTE IN de
l’amplificateur de puissance en option.
Cette connexion s’applique uniquement aux
amplificateurs. Le branchement de tout autre système
risque d’endommager l’appareil.
Para conectar a AMP REMOTE IN del amplificador de
potencia opcional.
Esta conexión es sólo para amplificadores.
La conexión de cualquier otro sistema puede dañar la
unidad.
Left
Gauche
Izquierdo
Right
Droit
Derecho
Left
Gauche
Izquierdo
Right
Droit
Derecho
to a metal surface of the car
First connect the black ground lead, then connect the
yellow and red power input reads.
vers un point métallique de la voiture
Branchez d‘abord le fil de masse noir et, ensuite, les fils
d‘entrée d‘alimentation jaune et rouge.
a un punto metálico del automóvil
En primer lugar conecte el conductor de puesta a masa
negro y, a continuación, los cables de entrada de
alimentación amarillo
rojo.
BUS AUDIO IN
SUB OUT (MONO)
AMP REM
Max. supply current 0.3 A
Courant max. fourni 0,3 A
Corriente máx. de
alimentación de 0,3 A
*
AUDIO OUT REAR
Blue/white striped
Rayé bleu/blanc
Con raya azul/blanca
White
Blanc
Blanco
White/black striped
Rayé blanc/noir
Con raya blanco/negro
Grey
Gris
Gris
Gray/black striped
Rayé gris/noir
Con raya gris/negro
Green
Vert
Verde
Green/black striped
Rayé vert/noir
Con raya verde/negro
Purple
Mauve
Púrpura
Purple/black striped
Rayé mauve/noir
Con raya púrpura/negro
AUDIO OUT FRONT
8
Black
Noir
Negro
Source selector
(not supplied)
Sélecteur de source
(non fourni)
Selector de fuente
(no suministrado)
Supplied to XA-C30
Fourni avec le XA-C30
Suministrado con el XA-C30
REMOTE IN
BUS
CONTROL IN
Fuse (10 A)
Fusible (10 A)
Fusible (10 A)
Blue
Bleu
Azul
Max. supply current 0.1 A
Courant max. fourni 0,1 A
Corriente máx. de alimentación de 0,1 A
Red
Rouge
Rojo
Light blue
Bleu ciel
Azul celeste
Yellow
Jaune
Amarillo
Insert with the cord upwards.
Insérez avec le câble vers le haut.
Insertar con el cable hacia arriba.
ANT REM
*
RCA pin cord (not supplied)
Cordon à broche RCA (non fourni)
Cable con pines RCA (no suministrado)
Supplied to the CD/MD changer
Fourni avec le changeur de CD/MD
Suministrado con el cambiador de CD/MD
XA-C30
Rotary commander RM-X4S (not supplied)
Satellite de commande RM-X4S (non fourni)
Mando rotativo RM-X4S (no suministrado)
to the power antenna control lead or power supply lead of
antenna booster amplifier
Notes
• It is not necessary to connect this lead if there is no power
antenna or antenna booster, or with a manually-operated
telescopic antenna.
• When your car has a built-in FM/AM antenna in the rear/side
glass, see “Notes on the control and power supply leads.”
vers le fil de commande de l‘antenne électrique ou le fil
d‘alimentation de l‘amplificateur d‘antenne
Remarques
• Il n’est pas nécessaire de raccorder ce fil s’il n’y a pas
d’antenne électrique ni d’amplificateur d’antenne, ou avec
une antenne télescopique manuelle.
• Si votre voiture est équipée d’une antenne FM/AM intégrée
dans la vitre arrière/latérale, voir les “Remarques sur les
câbles de commande et d’alimentation”.
al cable de control de la antena motorizada o al cable de
fuente de alimentación del amplificador de antena
Notas
• Si no se dispone de antena motorizada ni de amplificador de
antena, o se utiliza una antena telescópica accionada
manualmente, no será necesario conectar este cable.
• Si el automóvil incorpora una antena de FM/AM en el cristal
trasero/lateral, consulte “Notas sobre los cables de control y
de fuente de alimentación”.
to the +12 V power terminal which is energized in the
accessory position of the ignition key switch
Notes
• If there is no accessory position, connect to the +12 V power
(battery) terminal which is energized at all times.
Be sure to connect the black ground to it first.
• When your car has a built-in FM/AM antenna in the rear/side
glass, see “Notes on the control and power supply leads.”
à la borne +12 V qui est alimentée quand la clé de contact
est sur la position accessoires
Remarques
• S’il n’y a pas de position accessoires, raccordez la borne
d’alimentation (batterie) +12 V qui est en permanence sous
tension.
Veillez à raccorder le fil noir en premier lieu.
• Si votre voiture est équipée d’une antenne FM/AM intégrée
dans la vitre arrière/latérale, voir les “Remarques sur les
câbles de commande et d’alimentation”.
al terminal de alimentación de +12 V que se active en la
posición auxiliar de la llave de encendido
Notas
• Si no existe posición auxiliar, realice la conexión al terminal
de alimentación (batería) de +12 V que reciba energía
permanentemente.
Asegúrese de conectar primero a este terminal el conductor
de puesta a masa negro.
• Si el automóvil incorpora una antena de recepción de FM/
AM en el cristal trasero/lateral, consulte “Notas sobre los
cables de control y de fuente de alimentación”.
to the interface cable of a car telephone
ATT
vers le cordon de liaison d’un téléphone de voiture
al cable de interfaz de un teléfono para automóvil
to the +12 V power terminal which is energized at all times
Be sure to connect the black ground to it first.
à la borne +12 V qui est alimentée en permanence
Raccordez d‘abord le fil de masse noir.
al terminal de alimentación de +12 V que esté
permanentemente energizado
Asegúrese de conectar primero a este terminal el conductor de
puesta a masa negro.
10
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
SUB PANEL ASS’Y
4 two claws
6 sub panel ass’y
3 screw
(PTT2.6 × 8)
1 screw
(PTT2.6 × 6)
2 cover
3 two screws
(PTT2.6 × 8)
MECHANISM DECK (MG-164NV-138)
3 two screws
(PTT2.6 × 10)
5 mechanism deck
(MG-164NV-138)
4 claw
5 connector (CN752)
3 screw
(PTT2.6 × 8)
4 bracket (MD)
1 screw
(PTT2.6 × 6)
2 connector
(CN101)
1 screw
(PTT2.6 × 6)
11
SERVO BOARD
d
)
1 sensor flexible board
2 two screws
(BVTT2 × 4)
2 two screws
(BVTT2 × 4)
3 servo board
(CN102)
1 flexible boar
(CN103)
MAIN BOARD
2 three ground point
4 cord (with connector) (sub out)
5 two screws
(PTT2.6 × 10)
3 screw (PTT2.6 × 10
screws
1 connector (CN301)
6 main board
12
MD COVER ASS’Y
s
3 MD cover ass’y
cassette holder
1 four screws
(B2 × 3)
shaft (MD cover guide)
HEAT SINK
A
2 Pushing the Cassette Holder in the direction of arrow A with a
screwdriver, etc., disengage the Shaft (MD Cover Guide) from
the slot in the MD Cover Assy.
Note: Take care not to scratch the optiocal Pick-up when pushing
the Cassette Holder with a screwdriver. etc.
1 four screws
(PTT2.6 × 8)
2 two screws
(PTT2.6 × 12)
3 heat sink
1 three screw
(PTT2.6 × 8)
13
FLOAT BLOCK
)
3 Pushing arrow A part, raise the float block
up ward at the front to release a lock.
float block
A
lever (lock R)
lever (lock L)
1 tension spring (float B)
1 tension spring (float B
2 two tension springs (float F)
LO MOTOR ASS’Y (LOADING) (M903)
4 Remove the bracket (LO)
in the direction of arrow A.
1 Remove solders of motor (M903)
A
5 LO motor ass’y (loading)
(M903)
2 tension spring (rack)
3 claw
14
bracket (LO)
– bottom view –
LEVER (LE) ASS’Y
2 stopper washer
2 lever (LE) ass’y
3 roller (gear E)
1
HOLDER ASS’Y
2 type-E stopring 1.5
1 spring (chucking)
2 type-E stopring 1.5
3 lever (lock R)
4 Remove the holder ass’y in the
direction of the arrow.
2 type-E stopring 1.5
3 lever (lock L)
2 type-E stopring 1.5
1 spring (chucking)
15
CHUCKING ARM ASS’Y
y
holder ass’y
1 Remove the chucking arm ass’y
in the direction of the arrow.
OPTICAL PICK-UP (KMS-241C/J1NP)
7 optical pick-up
(KMS-241C/J1NP)
1 two screws
(K2 × 3)
2 guide shaft (OPT L)
4 screw
(B2 × 3)
6 bearing (SL)
5 feed screw ass’
3 screw
(K2 × 3)
16
SL MOTOR ASS’Y (SLED) (M902), SP MOTOR ASS’Y (SPINDLE) (M901)
4 screw
(P1.7 × 1.8)
5 bracket (SL)
9 two screws
(P1.7 × 1.8)
0 bracket (SP)
qa SP motor ass’y
(spindle) (M901)
7 screw
(B2 × 3)
2 two screws
(2 × 8)
3 sensor board
1 Remove solders of motors
(M901, M902)
8 base (SL)
6 SL motor ass’y
(sled) (M902)
17
SECTION 4
ELECTRICAL ADJUSTMENTS
TEST MODE
This set have the test mode function.
<Set the Test Mode>
1. Turn ON the regulated power supply. (The clock is displayed)
Note: Press the [OFF] button, if the clock is not displayed.
2. Push the preset [4] button.
3. Push the preset [5] button.
4. Press the preset [1] button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.
<Release the Test mode>
1. Push the [OFF] button.
MD SECTION
MD section adjustments are done automatically in this set.
TUNER SECTION
Tuner section adjustments are done automatically in this set.
18
5-1. BLOCK DIAGRAM – SERVO Section –
SECTION 5
DIAGRAMS
100
EFMO
MDX-C8500R/C8500X
15
TX
IC301 (1/2)
ADDT
• SIGNAL PATH
23
: MD PLAY
05
F
C B
I J
D A
E
DETECTOR
LASER DIODE
LDPD
OPTICAL PICK-UP BLOCK
(KMS-241C)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
ILCC
PD
M901
(SPINDLE)
M902
(SLED)
FCS+
FCS–
TRK+
TRK–
FILI
59
PCO
58
61
FILTER
60
RF AMP,
FOCUS/TRACKING ERROR AMP
48 47
MORFI
MORFO
IC303
I
1
RF AMP
J
2
A
4
B
5
I-V
C
AMP
6
D
7
E
8
I-V
F
AMP
9
APC
PD
IN4R
IN4F
IN2F
IN2R
IN1F
IN1R
IN3F
IN3R
LD/PD
16PSB
3
4
29
30
19
18
14
15
11
10
AMP
SPFD
SPRD
RFO
B.P.F.
AT
AMP
12
46
3T
APCREF
IC306
WBL
B.P.F.
ABCD
AMP
WBL3TEQ
V-I
CONVERTER
F0CNT
20
APCREF
83
SFDR
92
SRDR
91
FFDR
88
FRDR
89
TFDR
86
TRDR
85
TEMP
ADFM
29 30
FOCUS
ERROR AMP
TRACKING
ERROR AMP
+3.3V
PWM GENERATOR
40
I
J
B
A
C
D
E
F
AUTOMATIC
POWER
CONTROL
Q302
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
6
27
25
21
23
12
10
8
OUT4F
OUT4R
OUT2F
OUT2R
OUT1F
OUT1R
OUT3F
OUT3R
M
M
IC302
AGCI
RF AGC
& EQ
EQ
PEAK &
BOTTOM
ADIN
COMMAND
SERIAL/
PARALLEL
CONVERTER,
DECODER
SCLK
SWDT
1716 18
PEAK HOLD
Q301
+3.3V
13
RECP
AUTOMATIC
POWER
CONTROL
DIGITAL
SERVO
SIGNAL
PROCESS
DIGITAL SERVO
SIGNAL PROCESSOR
IC301 (2/2)
WBL
XLAT
RF
AUX
PEAK
BOTM
ADFG
ABCD
FE
TE
SE
ABCD
AUX1
38
33
37
36
32
35
34
26
28
7465647566 63
FE
TE
AUX2
ABCD
ANALOG MUX
A/D CONVERTER
FROM CPU
INTERFACE
AUTO
SEQUENCER
73 62
SE
PEAK
XLRF
CKRF
DTRF
51
52
55
78
79
BOTM
CLTV
FILO
ASYO
ASYI
COMPA-
RFI
RATOR
ADIP
ADFG
DEMODULATOR/
DECODER
F0CNT
X501
10MHz
80
81
82
PLL
EFM/ACIRC
ENCODER/DECODER
SUBCODE
PROCESSOR
SPINDLE
SERVO
SPFD
SPRD
DQSY11SQSY14XINT
XRST
94 93
10
12
59 62 55 54 52 45 51 64 26 27 28 29
MD-RST
31
EXTAL
XTAL
32
7 6
LOADING
MOTOR DRIVE
IC305
M903
(LOADING)
5 4
RIN FIN
OUT1 OUT2
1 7
SHOCK PROOF
MEMORY CONTROLLER
51331
LEVEL SHIFT
IC502
61242
SQSY
CC-XINT
EJECT
LOAD
M
ATRAC
CPU
INTERFACE
SENS
SRDT
SWDT
9 8 5 6 7
SWDT
SENS
MD-SI
MD-SO
MD MECHANISM CONTROLLER
ON: When the disc loading start
and the disc eject completion.
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
ENCODER/DECODER
INTERFACE
D-RAM
INTERNAL BUS
MONITOR
CONTROL
SCLK
XLAT
MNT0
1 2 3 4
13
LEVEL SHIFT
IC503
12
FOK
SCLK
XLAT
MNT0
MD-LAT
MD-CKO
IC501 (1/2)
C-SW
63
LOADING START/
EJECT END
DIN
DOUT
DADT
MNT1
MNT2
MNT3
135
246
SHOCK
XBUSY
SLOCK
MNT1
MNT2
MNT3
ON: When completion of
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER, 2M BIT D-RAM
21
22
24
LOADING
END
the disc loading.
IC301 (1/2)
BCK
LRCK
2526 27
LRCK
XBCK
FS256
CLOCK
GENERATOR
TH501
39
TEMP
E-SW
11 56
OSCI
OSCO
XOE
XWE
XRAS
XCAS
EMPHASIS
66
DEEMP
(LIMIT)
ON: When the optical pick-up is
inner position.
A-MUTE
16
17
D0 – D3A00 – A09
47, 46, 48, 49
32 – 29, 34 – 38, 43
41 22
45 3
44 4
42 23
67
LIMIT-IN
DADT, BCK, LRCK, 512FS
512FS
512FS OSC
IC304
D0 – D3
1, 2, 24, 25
A0 – A9
9 – 12, 14 – 18, 5
OE
WE
RAS
CAS
D-RAM
IC307
EMPHASIS
MD-ATT
(Page 21)
A
(Page 21)
B
C
(Page 21)
1919
MDX-C8500R/C8500X
5-2. BLOCK DIAGRAM – TUNER Section –
CN102
(FM/AM ANTENNA)
FM/AM TUNER UNIT
TUX201
FM-ANT
2
AM-ANT
1
EEPROM SDA
EEPROM SCL
17
18
FMAGC
4
SMETER
14
RDSDET
9
11
5
B/U 5V
VCC
16
TUNER 5V
B/U +5V
TUNER VCC
TUNER +5V
SDA
12 13
SCL
19
AM IF
MPX
AMDET
10
MUTING
Q202
8
MUTING
Q205
MUTING
CONTROL SWITCH
D202
Q206, 207
MPX
AM
AM IF
D
E
F
(Page 21)
(Page 21)
(Page 21)
DATA
(MDX-C8500R)
RDS DECODER
IC201
PATH
OUT
SC
MPTH
CIN
19
CLOCKED
COMPARATOR
OSCILLATOR
& CLOCK
OSCI
OSCO
4
5
X101
4.332MHz
18
2
52
MPX
LVIN
57 kHz
BAND-PASS
FILTER
MULTI
DETECTOR
16
20
10
11
51
53
CLOCK
SIGNAL
QUALITY
DECODER
RDS/RDBS
DEMODULATOR
& DECODER
DAVN
8
75
5
4
INTERFACE
REGISTER
IIC BUS
SLAVE
TRANSCEIVER
SDA
SCL
9
10
NOISE DET
DISCHARGE
DATA
Q208
SWITCH
56
CLOCK
BUFFER
Q209
BAND-PASS
FILTER
IC202
50
32
DATA, CLOCK
QUALITY
SMETER
(Page 21)
H
(MDX-C8500X)
(Page 21)
I
(Page 21)
G
T.ROM-SCL
T.ROM-SDA
FMAGC
VSM
MTP
DAVN
MASTER CONTROLLER
IC502 (1/4)
NS-MASK
QUALITY
TUMUTE
• SIGNAL PATH
: FM
05
: AM (MW/LW)
2020
5-3. BLOCK DIAGRAM – MAIN Section –
MDX-C8500R/C8500X
(Page 19)
(Page 20)
(Page 20)
(Page 20)
(Page 20)
(Page 20)
(Page 20)
(Page 22)
(Page 19)
05
DADT,
BCK,
LRCK,
512FS
A
CN302 (1/2)
BUS
AUDIO IN
AM
E
AM IF
F
MPX
D
DATA, CLOCK
H
QUALITY
I
SMETER
G
DSPDATA, DSPCKO
J
EMPHASIS
B
LEVEL SHIFT
IC803 (1/2)
DADT
9
8
LRCK
BCK
512FS
L
R
R-CH
INPUT SELECT, FM MPX
SEL
1
AM
11
AMIF
12
MPX
13
CONTROL
SDA
20
DATA
10
2
3
1
5
6
4
IC806
12
LEVEL SHIFT
IC803 (2/2)
XMST
DSPPLL
IC301 (1/2)
LOUDNESS/
VOLUME
INPUT
MULTIPLEXER
AM/FM
NOISE
BLANKER
L.P.F.
DIGITAL
IIC BUS
SCL
21 18
CLOCK
CANCELATION
PLL
R-CH
PILOT
PILOT
DET
11
(MDX-C8500X)
DIGITAL SIGNAL PROCESSOR,
SI1
71
76
LRCK
75
BCK
81
PLCLK
35
LIN
46
RIN
77
XMST
82
XECKSTP
SOFT
MUTE
LOUDNESSMUTE
DEMODULATOR
+STEREO ADJUST
+STEREO BLEND
QUAL
QUALITY
DIGITAL FILTER,
D/A CONVERTER
IC805
TRDT
RVDT59SCK
63
62 57
TRDT
XLAT
SCK
RVDT
TONE
CONTROL
MULTIPATH
DETECTOR
MPOUT16MPIN
15
ANALOG +8V
FL-OUT
27
AOUTL1
AOUTR1
AOUTR3
AOUTL3
AOUTR2
XTLI38
XTLO38
XLAT
REDY
XRST
6061
REDY
DSPRST
TO
OUTPUT
SELECTOR
L.P.F. S & H HIGH-CUT
D/A
CONVERTER
LEVEL
14
ACOUTL
29
54
52
43
41
40
RL-OUT
FR-OUT
RR-OUT
SUB-OUT
38
X801
16.9344MHz
CENTER VOLTAGE
GENERATOR
(FOR BIAS)
IC809 (2/2)
R-CH
R-CH
SM
R-CH
ELECTRICAL VOLUME
R-CH
LOW-PASS
FILTER
IC807
LOW-PASS
FILTER
IC809 (1/2)
XMST
DSPPLL
TRDT
RVDT
SCK
XLAT
REDY
DSPRST
DSPDATA
DSPCKO
18
DATA
CLOCK
34
33
35
29
28
25
26
27
35
78
36
31
70
71
ACINLF
ACINLR
SWINR
DSPMST
DSPPLL
DSPSI
DSPSO
DSPCKO
DSPLAT
DSPREADY
DSPRST
VOLATT
I2C SDA
I2C SCL
IC301 (2/2)
MONO FADER MIXER
OUTPUT
SELECTOR
SUBWOOFER
+PHASE CONTROL
BATT B+
MASTER CONTROLLER
IC502 (2/4)
D352
ATT
TESTIN
TELATT
AMPON
MONO
FADER
BATTERY OFF
MUTE DRIVER
Q352
5
84
96
55
OUTLF
OUTLR
OUTSWR
30
29
25
D354
(MDX-C8500R)
LINE
DRIVER
IC303
(MDX-C8500X)
R-CH
R-CH
(MDX-C8500R)
LINE
DRIVER
IC304
(MDX-C8500X)
R-CH
MUTING
CONTROL SWTICH
Q354, 355
MUTING
CONTROL SWITCH
Q353
LEVEL SHIFT
Q111
MUTING
Q356
MUTING
Q357
MUTING
Q358
MUTING
Q359
MUTING
Q360
MUTING
Q361
IN2
12
14
IN4
11
IN1
IN3
15
MUTE
22
D353
POWER AMP
IC351
OUT2+
OUT2–
OUT4+
OUT4–
OUT1+
OUT1–
OUT3+
OUT3–
STBY
4
CN302 (2/2)
CN301
SUB OUT
5
3
21
23
9
7
17
19
MD-ATT
AMPON
L
AUDIO
OUT FRONT
R
L
AUDIO
OUT REAR
R
(L)
(R)
CN101 (1/2)
(POWER CONNECTOR)
1
FL+
9
FL–
4
FR+
12
FR–
2
RL+
10
RL–
3
RR+
11
RR–
15
TEST
13
TEL-ATT
C
(Page 19)
K
(Page 23)
• SIGNAL PATH
: MD PLAY
: FM
: AM (MW/LW)
: BUS AUDIO IN
97
EMPH
2121
MDX-C8500R/C8500X
5-4. BLOCK DIAGRAM – DISPLAY/KEY CONTROL Section –
(Page 21)
REMOTE IN
DSPDATA,DSPCKO
J
J651
D611
48 72
TRDT
61
RCIN0
SCK
63
SP-SI
RCIN1
SA LAT
4
33 57
SP-LAT
SP-SCK
LSW751,901–917,
S901 – 904
46
47
KEYIN1
KEYIN0
BOOT
106
X105
18.432MHz
85
86
BOOT
EXTAL
LIQUID CRYSTAL DISPLAY
DRIVE CONTROLLER
IC701 (1/2)
XTAL
D701
ROTARY
ENCODER
RE901
116 115
REIN0
RX
12
MAIN BODY SIDE
62
RX
CN701
RE901
VOLUME/BASS/
TREBLE/BALANCE/
FADER CONTROL
REIN1
CN901
FRONT PANEL SIDE
14 1
79
KEYACK
TX
13
KEY ACTIVE
SWITCH
Q701, 702
80
AD-ON
MASTER CONTROLLER
IC502 (3/4)
MDX-C8500R : LSW901 – 908,
MDX-C8500X : LSW901 – 908,
B/U +5V
LSW910 – 917
LSW912 – 917
(NOSE DETECT)
117
NOSE-SW
S102
BUZZER
DRIVE
Q351
15
BEEP
LCD B+
BZ101
(BUZZER)
(LCD BACK LIGHT)
LED751
(MD DISC SLOT),
LSW751
LED910 – 915
B+ SWITCH
Z
X1
93
X104
3.68MHz
Q751, 752
118
DOORIND
X1A
73
X103
32.768kHz
X0A
74
X0
92
LCD B+
TX/LCD-DATA
LCD-SCK
LCD-CE1
60
64 66
C953, R957
OSC
100
99
98
LCD-CE
LCD-CLK
LCD-DATA
SEG1 – SEG74
1 – 74
LIQUID CRYSTAL DISPLAY
05
LCD901
COM1 – COM8
83 – 76
96
OSC
LED
DRIVE
Q902
85
(MDX-C8500R) (MDX-C8500R)
(MDX-C8500X)
GREEN
LIQUID CRYSTAL DISPLAY DRIVER
IC901
LED
DRIVE
Q901
84
AMBER
(MDX-C8500X)
LED DRIVE
Q903
86
DIMMER
2222
5-5. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
MDX-C8500R/C8500X
SIRCS
RESET
DATA
CLK
BUS ON
3
2
5
4
6
D605
BUS ON SWITCH
Q603
B/U +5V
SIRCS
BUFFER
Q605
RESET SIGNAL
GENERATOR
IC503
SONY BUS INTERFACE
IC601
RST
DATA
CLK
BUS ON
OUT
RESET
SWITCH
BUS ON
SWITCH
2
6
4
1
RST
DATA IN
DATA OUT
CLK IN
BUS
ON IN
S101
RESET
13
11
12
MASTER CONTROLLER
24
85
90
86
18
17
6
9
4
SIRCS
RAMBU
RESET
HSTX
SYSRST
UNISO
UNISI
UNICKO
BUS-ON
IC502 (4/4)
F CH
FSW IN
DSPON
ACCIN
ILLIN
DSP CIRCUIT B+
IN
ERROR
4
AMP
RT
OSC SWITCH
98
65
110
D104
81
95
Q101
ANALOG +8V
TUNER VCC
(TUNER CIRCUIT B+)
TUNER +5V
TUNER CIRCUIT/
RDS DECODER
(IC201) B+
7
+5V
REGULATOR
Q201
REMOTE CONTROL
RECEIVER
IC951
D502
RAM RESET
IC504
D614
B/U +5V
9
8
DSP +5V
DIGITAL +3.3V
ANALOG +3.3V
PWN
COMPARATOR
OSC
+3.3V REGULATOR
+3.3V REGULATOR
OUTPUT
CIRCUIT
POWER CONTROL
IC302
B+ SWITCH
Q203, 204
IC802
IC801, Q801
OUT
VCC
+8V
REGULATOR
Q107 – 109
SWITCHING
REGULATOR
Q103, 105 106
1
2
B+ SWITCH
Q102, 104
ACCESSORY
CHECK
Q112
BATT B+
POWER AMP
(IC351) B+
D109
F1
ILLUMINATION
LINE DETECT
Q113
ANTENNA REMOTE
SWITCH
Q364, 366
CN101 (2/2)
(POWER CONNECTOR)
16
7
D108
14
TH103
6
+B
ACC
ILL
ANT-R
BATT
CN601
BUS CONTROL IN
(FOR SONY BUS)
7
BATT B+
TH101
3
D607
D603
BATT
BATTERY
LEVEL SHIFT
Q602
LEVEL SHIFT
Q601
BATTERY
SWITCH
DETECT
Q604
BU IN
PWON
TUNON
CDMD ON
FLASH ON
MDMON
83
113
116
82
52ILL-ON
65MD-ON
10
D703
LCD B+
LCD DRIVER
(IC901) B+
LO +12V
LOADING MOTOR
DRIVER (IC306) B+
+3.3V
DRIVER +5V
MOTOR/COIL
DRIVER
(IC303) B+
LED901 – 904 (ILLUMINATION)
LSW909 DSO
B+ SWITCH
Q402, 403
VCC
+3.3V
REGULATOR
IC401, Q401
REGULATOR
Q703 – 705
B+ SWITCH
Q406, 407
+12V
REGULATOR
Q401, 404, 405
B/U +5V
+5V
REGULATOR
Q110
AMP REMOTE
SWITCH
Q363, 365
TH102
AMPON
5
K
(Page 21)
AMP-R
BU-IN
10
LEVEL SHIFT
77
LIQUID CRYSTAL DISPLAY
82
NMI (H)
49
BU-IN
BUS-ON
38
IC702
81
RESET
101
UNICKI
UNISI
98
UNISO
97
LINK OFF
50
MD MECHANISM CONTROLLER
60
BU-IN
BUS-ON
61
30
RESET
48
UNICKIO
49
UNISI
UNISO
50
DRIVE CONTROLLER
IC701 (2/2)
IC501 (2/2)
05
2323
5-6. NOTES FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
• Circuit Boards Location
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
z
•
•
: Through hole.
f
: internal component.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the par ts face side seen from
(Component Side) the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
f
•
: internal component.
4
W or less unless otherwise
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• Power voltage is dc 14.4V and f ed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
f : AM (MW/LW)
L : BUS AUDIO IN
E : MD PLAY
• Please refer to servicing notes (page 3) for system of
TYPE A, B and C.
SENSOR board
DSO board
SERVO board
SUB board
KEY board
MAIN board
2424
• Waveforms
– SERVO Board –
– MAIN Board –
– DSO Board –
1 IC301 qh (OSCI) (MD Play Mode)
4.6 Vp-p
44.3 ns
2 IC301 wg (LRCK) (MD Play Mode)
3.8 Vp-p
22.7 µs
3 IC301 wh (XBCK) (MD Play Mode)
6 IC301 uf (TE), IC302 wh (TE)
(MD Play Mode)
Approx.
2 Vp-p
7 IC302 1, 2, r;, rh (I, J, AGCI, RFO)
(MD Play Mode)
Apporx.
0.6 Vp-p
8 IC304 1, 2 (MD Play Mode)
qa IC304 7 (MD Play Mode)
44.3 ns
qs IC501 ea (EXTAL)
101 ns
4.4 Vp-p
3.7 Vp-p
1 IC201 4 (OSCO)
231 ns
2 IC502 yg (F OSC)
3.4 µs
3 IC502 ud (X1A)
5.8 Vp-p
4.6 Vp-p
6 IC302 1 (OUT)
3.4 µs
7 Q103, 106 (Base)
3.4 µs
8 Q103, 106 (Emitter)
12.6Vp-p
7 Vp-p
1 IC803 3 (MD Play Mode)
3.9 Vp-p
22.7 µs
2 IC803 6 (MD Play Mode)
4 Vp-p
354 ns
3 IC805 ra (XTLI38)
354 ns
4 IC301 tg (RFI), IC302 ek (RF)
(MD Play Mode)
5 IC301 yg (FE), IC302 ef (FE)
(MD Play Mode)
4.1 Vp-p
Apporx.
1.5 Vp-p
Approx.
0.5 Vp-p
44.3 ns
9 IC304 3 (MD Play Mode)
44.3 ns
0 IC304 5, 6 (MD Play Mode)
4.1 Vp-p
2.6 Vp-p
3.8 Vp-p
30.5 µs
4 IC502 od (X1)
272 ns
5 IC701 ih (EXTAL)
6 Vp-p
6.1 Vp-p
3 Vp-p
3.4 µs
9 Q105 (Base)
3.4 µs
0 Q105 (Collector)
6.6 Vp-p
3.6 Vp-p
15.2 Vp-p
2.7 Vp-p
59.1 ns
– KEY Board –
1 IC901 oh (OSC)
3.1 Vp-p
22.7 µs
44.3 ns
54.2 ns
3.4 µs
2525
MDX-C8500R/C8500X
5-7. PRINTED WIRING BOARDS – SERVO Board (Component Side)/SENSOR Board –• See page 24 for Circuit Boards Location.
• Semiconductor
A
B
C
D
Location
Ref. No. Location
D401 A-12
D501 D-11
IC301 D-7
IC302 I-9
IC303 F-7
IC304 C-8
IC305 B-13
IC306 E-6
IC401 A-12
IC501 G-13
IC502 D-10
IC503 E-10
Q301 E-5
Q302 I-8
Q401 B-11
SENSOR BOARD
(COMPONENT SIDE)
E
SENSOR BOARD
(CONDUCTOR SIDE)
F
G
1
(LIMIT)
2 3 4 5 6 7 8 9 10 11 12 13 14
M902
(SLED)
(LOADING END)
M903
(LOADING)
RED
MM
BLK
11
1
RED
MM
BLK
RED
1-676-656-
BLK
MM
11
(11)
M902
(SPINDLE)
SERVO BOARD
(COMPONENT SIDE)
(CHASSIS)
R320
C308
R325
C310
R328
C311
Q301
R324
R327
C306
R319
C305
R318
50 26
51
IC301
R314
25
R313
8
IC304
1
R311
FB302
5
4
R354
5
B
E
R404
8
7
C402 R405
C
Q401
8
C403 C406
29 30
IC502
IC401
CN101
4
K
A
1
D401
C352
1
C11
8
IC305
4
11
CN103
5
(CHASSIS)
SENSOR FLEXIBLE
C314C339
75
76
BCE
R329
R330
C315
L304
32 17
C348
5
IC306
1
R331
4
R353
R352
C343
3
C342
L303
1
100
R351
C349
R308
R307
R306
R305
R304
R303
R302
R301
14
8
IC503
14
IC303
116
L305
L306
C336
1
7
1
D501
R538
IC501
1
1-654-693-
R525
R524
R523
R522
65
R518
R537
R536
64
K
A
12
80
1
R501
R502
R503
R531
BOARD
11
(Page 31)
R517
A
MAIN BOARD
CN301
C516
R535
+
C318
R355
CN102
1
C331
R356
+
C319
20
C320
R337
C321
R348
C322
Q302
BCE
R349
R357
C329
1
IC302
12
R341
R350
C328
36
25
R339
R345
R343
R338
C330
C327
C326
C325
R347
C324
R344
R342
R346
C347
L302
+
C346
3748
2413
R340R336
R505
R527
R528
R526
R529
H
(CHASSIS)
OPTICAL
PICK-UP
BLOCK
(KMS-241C)
I
LOADING START
EJECT END
05
1-676-656-
11
(11)
R539
R504
C501
X501
24
25
R532
40
R507
R506
R511
41
R516
1-675-655-
(CHASSIS)
11
(11)
2626
5-8. PRINTED WIRING BOARD – SERVO Board (Conductor Side) –• See page 24 for Circuit Boards Location.
MDX-C8500R/C8500X
1
2 3 4 5 6 7 89
• Semiconductor
A
B
C
D
SERVO BOARD
(CONDUCTOR SIDE)
R547
L501
C510
Q402
R358
BCE
Q403
R402
R403
C511
L301
C344
+
C345
C359
C353
C302
C362
+
C361
15913
IC307
C307
26221814
C309
C358
C301
C317
C356
C357
R401
B
E
C
Location
Ref. No. Location
IC307 C-8
Q402 B-4
Q403 B-4
+
C504
C506
C505
R542
C512
R540
E
R534
R533
C515
F
C514
C513
R521R520
R332
G
R519
H
R512
C503
R510
TH501
RB503
R334
R333
R335
RB301RB302
C333
C316
+
C351
C350
I
05
1-675-655-
11
(11)
2727
MDX-C8500R/C8500X
5-9. SCHEMATIC DIAGRAM – SERVO Board (1/2)/SENSOR Board –• See page 25 for Waveforms. • See page 42 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : MD PLAY
: Impossible to measure
∗
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
2828
5-10. SCHEMATIC DIAGRAM – SERVO Board (2/2) –• See page 25 for Waveforms.
MDX-C8500R/C8500X
(Page
34)
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : MD PLAY
: Impossible to measure
∗
2929
MDX-C8500R/C8500X
5-11. PRINTED WIRING BOARD – MAIN Board (Component Side) –• See page 24 for Circuit Boards Location.
• Semiconductor Location
Ref. No. LocationRef. No. Location
D101 I-4
D102 I-4
D104 H-5
D105 F-8
D106 B-2
D107 B-1
D108 K-3
D109 J-3
D201 G-12
D202 D-13
D203 F-11
D204 F-11
D205 F-12
D301 C-6
D302 D-7
D352 C-8
D353 C-7
D354 C-8
D501 H-7
D601 G-7
D602 H-7
D603 F-8
D607 F-7
D608 G-7
D609 F-7
D610 G-7
D614 G-8
D701 J-12
D702 I-11
D703 I-13
D751 K-12
D752 J-12
D753 K-13
D754 J-11
D755 K-11
D756 J-12
D757 J-12
D758 K-13
D759 K-13
D760 J-13
D761 K-11
D762 J-13
IC201 H-12
IC202 F-12
IC301 G-10
IC302 I-3
IC303 D-9
IC304 D-11
IC305 D-10
IC502 I-7
IC503 J-5
IC504 K-5
IC601 G-7
IC701 J-10
IC702 H-11
Q101 I-4
Q102 H-4
Q103 H-4
Q106 H-4
Q108 E-8
Q109 E-8
Q111 K-7
Q112 J-4
Q113 K-4
Q201 G-13
Q202 E-13
Q203 E-12
Q204 E-11
Q205 E-13
Q206 D-13
Q207 D-13
Q208 F-11
Q209 F-13
Q351 K-3
Q352 C-8
Q353 C-7
Q354 C-6
Q355 C-7
Q356 B-10
Q357 B-10
Q358 B-11
Q359 B-11
Q360 C-12
Q361 D-12
Q363 D-5
Q364 D-5
Q365 D-4
Q366 D-4
Q404 E-5
Q405 F-5
Q407 F-5
Q601 G-7
Q602 H-7
Q603 F-7
Q604 F-8
Q605 D-2
Q701 J-12
Q702 J-13
Q703 I-13
Q705 I-13
3030
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