Sony MDX-C6500RX User manual

SERVICE MANUAL

AEP Model

MDX-C6400R/C6500R/C6500RX

UK Model

MDX-C6500R/C6500RX

SPECIFICATIONS

MDX-C6400R/C6500R/C6500RX

Photo: MDX-C6500R

Model Name Using Similar Mechanism NEW

Base Mechanism Type MG-164NZ-138

Optical Pick-up Name KMS-241C

FM/MW/LW MINIDISC PLAYER

MD player section

Signal-to-noise ratio 90 dB

Frequency response 10 – 20,000 Hz

Wow and flutter Below measurable limit

Tuner section

FM

Tuning range 87.5 – 108.0 MHz

Aerial terminal External aerial 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),

72 dB (mono)

Harmonic distortion at 1 kHz

0.6 % (stereo),

0.3 % (mono)

Separation 35 dB at 1 kHz

Frequency response 30 – 15,000 Hz

MW/LW

Tuning range MW: 531 – 1,602 kHz

LW: 153 – 279 kHz

Aerial terminal External aerial connector

Intermediate frequency 10.7 MHz/450 kHz

Sensitivity MW: 30 µV

LW: 40 µV

Power amplifier section

Outputs Speaker outputs

(sure seal connectors)

Speaker impedance 4 – 8 ohms

Maximum power output 50 W × 4 (at 4 ohms)

General

Outputs Audio outputs*

1

Power aerial relay control

lead

Power amplifier control

lead

Telephone ATT control

lead*

2

Tone controls Bass ±9 dB at 100 Hz

Treble ±9 dB at 10 kHz

Power requirements 12 V DC car battery

(negative ground)

Dimensions Approx. 178 × 50 × 183 mm

(w/h/d)

Mounting dimensions Approx. 182 × 53 × 162 mm

(w/h/d)

Mass Approx. 1.2 kg

Supplied accessories Parts for installation and

connections (1 set)

Front panel case (1)

*

1

Equipped with front and rear outputs:

MDX-C6500RX/C6500R only

Equipped with rear outputs: MDX-C6400R

*

2

MDX-C6500RX/C6500R only

U.S. and foreign patents licensed from Dolby

laboratories Licensing Corporation.

Design and specifications are subject to change

without notice.

Ver 1.2 2001.12

9-870-051-13 Sony Corporation

2001L0500-1 e Vehicle Company

C 2001.12 Published by Sony Engineering Corporation

2

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur-

ing 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.

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

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 MANUAL OR IN SUPPLEMENTS PUB-

LISHED BY SONY.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous ra-

diation exposure.

The laser diode in the optical pick-up block may suffer electro-

static 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 electro-

static 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 sufficiently before the operation.

The flexible board is easily damaged and should be handled with

care.

laser-tap

OPTICAL PICK-UP FLEXIBLE BOARD

1. GENERAL

Location of controls ........................................................ 3

Installation....................................................................... 4

Connections ..................................................................... 5

2. DISASSEMBLY ......................................................... 9

3. ELECTRICAL ADJUSTMENTS

Test Mode ........................................................................ 16

MD Section ..................................................................... 16

Tuner Section .................................................................. 16

4. DIAGRAMS

4-1. Block Diagram – SERVO Section – ............................... 17

4-2. Block Diagram – TUNER Section – .............................. 18

4-3. Block Diagram – MAIN Section – ................................. 19

4-4. Block Diagram – BUS CONTROL/

POWER SUPPLY Section – ........................................... 20

4-5. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 21

4-6. Printed Wiring Boards

– SERVO Board (Component Side)/

SENSOR Board –............................................................ 22

4-7. Printed Wiring Board

– SERVO Board (Conductor Side) – .............................. 23

4-8. Schematic Diagram – SERVO Board (1/2) – ................. 24

4-9. Schematic Diagram – SERVO Board (2/2) – ................. 25

4-10. Printed Wiring Board

– MAIN Board (Component Side) – .............................. 26

4-11. Printed Wiring Board

– MAIN Board (Conductor Side) – ................................ 27

4-12. Schematic Diagram – MAIN Board (1/3) – ................... 28

4-13. Schematic Diagram – MAIN Board (2/3) – ................... 29

4-14. Schematic Diagram – MAIN Board (3/3) – ................... 30

4-15. Printed Wiring Board – SUB Board – ............................ 32

4-16. Schematic Diagram – SUB Board – ............................... 33

4-17. Printed Wiring Board – KEY Board –............................ 34

4-18. Schematic Diagram – KEY Board – .............................. 35

4-19. IC Pin Function Description ........................................... 40

5. EXPLODED VIEWS................................................ 50

6. ELECTRICAL PARTS LIST ............................... 54

TABLE OF CONTENTS

3

SECTION 1

GENERAL

This section is extracted from

instruction manual.

Location of controls

Refer to the pages listed for details.

1 Volume control dial 19

2 MENU button 8, 10, 12, 13, 14, 15, 16,

18, 19, 21, 24

3 DISC/PRST +/– (cursor up/down) buttons

8, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24

During CD/MD playback:

Disc change 10, 13

During radio reception:

Preset stations select 16

4

Z (eject) button (located on the front

side of the unit behind the front panel)

9

5 DSPL/PTY (display mode change/

programme type) button 9, 10, 12, 17,

20

6 LIST button 12

List-up 13

7 SOURCE (TUNER/CD/MD) button

8, 9, 10, 13, 15, 16, 19

8 Display window

9 OPEN button 7, 9, 26

q; D-BASS button 25

qa SOUND button 23

qs Reset button (located on the front side

of the unit behind the front panel) 7

qd OFF button* 7, 8, 9

qf SEEK/AMS –/+ (cursor left/right) buttons

8, 10, 12, 14, 16, 18, 19, 21, 23, 24

Automatic Music Sensor 10, 14

Manual Search 10

Seek 15, 16, 18

qg ENTER button 8, 10, 12, 13, 14, 15, 16,

18, 19, 20, 21, 24

qh MODE button 19

During CD or MD playback:

CD/MD unit select 9, 13

During radio reception:

BAND select 15, 16

qj Receptor for the card remote

commander

qk Number buttons

During radio reception:

Preset number select 15, 16, 18, 19

During CD/MD playback:

(1) REP 11

(2) SHUF 11

ql AF button 17, 18, 19

w; TA button 18, 19

* Warning when installing in a car

without ACC (accessory) position on

the ignition key switch

Be sure to press (OFF) on the unit for two

seconds to turn off the clock display after

turning off the engine.

When you press (OFF) only momentarily,

the clock display does not turn off and this

causes battery wear.

MDX-C6500RX/C6500R

/C6400R

D

I

S

C

+

P

R

S

T

+

-

D

I

S

C

–

P

R

S

T

-

LIST

DSPL

AF

OFF

PTY

ENTER

MENU

SOUND

1 2 3 4 56

SOURCE

-

SEEK/AMS

REP SHUF

TA

OPEN

D-BASS

MODE

Setting the clock

The clock uses a 24-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 the (+) side of (SEEK/AMS).

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 play mode.

Tip

You can set the clock automatically with the RDS

feature (see page 17).

Note

In the initial setting, the clock indication appears

while the unit is turned off.

When the D.INFO mode is set to ON, the time is

always displayed (page 24).

4

5

6

7

8

9

SECTION 2

DISASSEMBLY

SUB PANEL ASS’Y

Note: Follow the disassembly procedure in the numerical order given.

MECHANISM DECK (MG-164NZ-138)

1 screw

(PTT2.6 × 5)

2 cover

4 claw

3 screw

(PTT2.6 × 8)

3 two screws

(PTT2.6 × 8)

3 screw

(PTT2.6 × 8)

5 sub panel ass’y

4 two claws

6 flexible flat cable (CNP811)

1 screw

(PTT2.6 × 5)

5 mechanism deck

(MG-164NZ-138)

3 two screws

(PTT2.6 × 5)

4 bracket (MD)

2 connector

(CN101)

1 screw

(PTT2.6 × 5)

10

SERVO BOARD

MAIN BOARD

2 two screws

(BVTT2 × 4)

1 sensor flexible board

(CN102)

2 two screws

(BVTT2 × 4)

1 flexible boar

d

(CN103)

3 servo board

1 three ground point

screws

2 three screws

(PTT2.6 × 10

)

3 main board

11

MD COVER ASS’Y

HEAT SINK

1 four screws

(B2 × 3)

3 MD cover ass’y

2 Pushing the Cassette Holder in the direction of the 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.

shaft (MD cover guide)

cassette holder

A

1 three screws

(PTT2.6 × 10)

2 two screws

(PTT2.6 × 12)

1 screw

(PTT2.6 × 10)

C6500R/C6500RX

1 two screws

(PTT2.6 × 10

)

3 heat sink

12

FLOAT BLOCK

LO MOTOR ASS’Y (LOADING) (M903)

1 tension spring (FLOAT B)

1 tension spring (FLOAT B

)

2 two tension springs (FLOAT F)

3 Pushing an arrow A part, raise the float block

up ward at the front to release a lock.

A

float block

lever (lock R)

lever (lock L)

4 Remove the bracket (LO)

in the direction of the arrow A.

bracket (LO)

1 Remove solders of motor (M903)

5 LO motor ass’y (loading)

(M903)

2 tension spring (rack)

3 claw

A

– bottom view –

13

LEVER (LE) ASS’Y

HOLDER ASS’Y

2 stopper washer

2 lever (LE) ass’y

3 roller (GEAR E)

1

2 type-E stopring 1.5

2 type-E stoprin

g

1.5

3 lever (lock L)

2 type-E stopring 1.5

4 Remove the holder ass’y in the

direction of the arrow.

1 spring (CHKG)

3 lever (lock R)

14

OPTICAL PICK-UP (KMS-241C/J1NP)

CHUCKING ARM ASS’Y

1 Remove the chucking arm ass’y

in the direction of the arrow.

holder ass’y

6 bearing (SL)

5 feed screw ass’

y

3 screw

(K2 × 3)

2 guide shaft (OPT L)

1 two screws

(K2 × 3)

7 optical pick-up

(KMS-241C/J1NP)

4 screw

(B2 × 3)

15

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)

16

SECTION 3

ELECTRICAL ADJUSTMENTS

TEST MODE

This set have the test mode function.

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.

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.

MDX-C6400R/C6500R/C6500RX

1717

SECTION 4

DIAGRAMS

4-1. BLOCK DIAGRAM – SERVO Section –

F

C B

D A

E

I J

J

I

B

A

C

D

E

F

DETECTOR

1

2

J

I

4

5

6

7

A

B

C

D

8

9

E

F

LDPD

LASER DIODE

ILCC

PD

OPTICAL PICK-UP BLOCK

(KMS-241C)

AUTOMATIC

POWER

CONTROL

Q302

11

10

APC

PD

LD/PD

AMP

12

APCREF

I-V

AMP

I-V

AMP

AT

AMP

B.P.F.

29 30

WBL

ADFM

ADIN

32

ADFG

ABCD

AMP

FOCUS

ERROR AMP

TRACKING

ERROR AMP

35

34

26

28

ABCD

FE

TE

SE

V-I

CONVERTER

20

F0CNT

WBL

3T

EQ

+3.3V

SERIAL/

PARALLEL

CONVERTER,

DECODER

COMMAND

1716 18

SWDT

SCLK

XLAT

RF AMP

B.P.F.

46

RFO

40

RF AGC

& EQ

AGCI

EQ

38

RF

RF AMP,

FOCUS/TRACKING ERROR AMP

IC302

TEMP

48 47

MORFO

MORFI

3T

PEAK &

BOTTOM

WBL

33

AUX

73 62

37

PEAK

36

BOTM

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

IC303

6

8

OUT4F

OUT4R

M

M901

(SPINDLE)

27

25

OUT2F

OUT2R

M

M902

(SLED)

21

23

OUT1F

OUT1R

12

10

OUT3F

OUT3R

FCS+

FCS–

TRK+

TRK–

2-AXIS

DEVICE

(TRACKING)

(FOCUS)

3

4

IN4R

IN4F

29

30

IN2F

IN2R

19

18

IN1F

IN1R

14

15

IN3F

IN3R

SPFD

SPRD

IC306

92

91

88

89

86

85

83

APCREF

SFDR

SRDR

FFDR

FRDR

TFDR

TRDR

16PSB

PWM GENERATOR

AUTOMATIC

POWER

CONTROL

DIGITAL

SERVO

SIGNAL

PROCESS

7465647566 63

ANALOG MUX

A/D CONVERTER

AUTO

SEQUENCER

13

FROM CPU

INTERFACE

DIGITAL SERVO

SIGNAL PROCESSOR

IC301 (2/2)

RECP

PEAK HOLD

Q301

+3.3V

ABCD

AUX1

AUX2

ABCD

FE

TE

SE

PEAK

BOTM

81

80

82

XLRF

CKRF

DTRF

EFM/ACIRC

ENCODER/DECODER

SHOCK PROOF

MEMORY CONTROLLER

ATRAC

ENCODER/DECODER

PLL

FILTER

59

58

61

60

FILI

PCO

CLTV

FILO

100

EFMO

23

ADDT

IC301 (1/2)

15

TX

COMPA-

RATOR

51

52

55

ASYO

ASYI

RFI

ADIP

DEMODULATOR/

DECODER

78

ADFG

SPINDLE

SERVO

79

F0CNT

94 93

SPFD

SPRD

SUBCODE

PROCESSOR

24

SAMPLING

RATE

CONVERTER

DIGITAL

AUDIO

INTERFACE

22

21

DIN

DOUT

DIGITAL SIGNAL PROCESSOR,

EFM/ACIRC ENCODER/DECODER,

SHOCK PROOF MEMORY CONTROLLER,

ATRAC ENCODER/DECODER, 2M BIT D-RAM

IC301 (1/2)

DADT

INTERNAL BUS

D-RAM

CLOCK

GENERATOR

2526 27

512FS OSC

IC304

XBCK

LRCK

FS256

BCK

LRCK

FS256

X301

22.5792MHz

16

OSCI

17

OSCO

CPU

INTERFACE

MONITOR

CONTROL

10

XRST

12

DQSY

11

SQSY

14

XINT

9 8 5 6 7

SENS

SRDT

SWDT

SCLK

XLAT

LEVEL SHIFT

IC502

51331

61242

LEVEL SHIFT

IC503

1 2 3 4

MNT0

MNT1

MNT2

MNT3

13

1

3

5

12

2

4

6

FOK

SHOCK

XBUSY

SLOCK

SWDT

SCLK

XLAT

59 62 55 54 52 45 51 64 26 27 28 29

MNT0

MNT1

MNT2

MNT3

67

A-MUTE

21

LOCK

39

TEMP

MD-RST

SQSY

CC-XINT

SENS

MD-SI

MD-SO

MD-CKO

MD-LAT

7 6

EJECT

LOAD

5 4

05

1 7

M

RIN FIN

OUT1 OUT2

LOADING

MOTOR DRIVE

IC305

M903

(LOADING)

63

C-SW

LOADING START/

EJECT END

E-SW

LIMIT-IN

(LIMIT)

LOADING

END

ON: When the disc loading start

and the disc eject completion.

ON: When completion of

the disc loading.

ON: When the optical pick-up is

inner position.

31

32

EXTAL

XTAL

X501

10MHz

TH501

66

DEEMP

47, 46, 48, 49

1, 2, 24, 25

D0 – D3

32 – 29, 34 – 38, 43

9 – 12, 14 – 18, 5

A0 – A9

D0 – D3A00 – A09

41 22

45 3

44 4

42 23

XOE

XWE

XRAS

XCAS

OE

WE

RAS

CAS

D-RAM

IC307

(Page 19)

A

DADT, BCK, LRCK, FS256

(Page 19)

C

LOCK

MD-ATT

(Page 19)

D

(Page 19)

B

EMPHASIS

MD MECHANISM CONTROLLER

IC501 (1/2)

• SIGNAL PATH

: MD PLAY

11 56

RESET, EMPHASIS

RESET

MDX-C6400R/C6500R/C6500RX

1818

4-2. BLOCK DIAGRAM – TUNER Section –

1

2

ANT-FM

ANT-AM

53

VSM

56

TUNATT

14

S-METER

10

MPX

8

AM-DET

9

RDS-DET

05

MUTING

Q111

MUTING

CONTROL SWITCH

Q131

MUTING

Q121

D131

FM/AM TUNER UNIT

TU1

MASTER CONTROLLER

IC501 (1/3)

17

SDA (E2PROM)

J1

(FM/AM ANTENNA)

5

VCC (8.5V)

TUNER +8.7V

16

VDD (5V)

TUNER +5.6V

11

VDD E2P (5V)

9

52

MPTH

64

DAVN

RDS DECODER

IC51

INTERFACE

REGISTER

IIC BUS

SLAVE

TRANSCEIVER

OSCILLATOR

& CLOCK

X51

4.332MHz

4

8

5

OSCI

OSCO

SDA

SCL

DAVN

57 kHz

BAND-PASS

FILTER

CLOCKED

COMPARATOR

RDS/RDBS

DEMODULATOR

& DECODER

SIGNAL

QUALITY

DECODER

16

18

19

MPX

CIN

4

5

SC

OUT

MULTI

PATH

DETECTOR

20

2

LVIN

MPTH

50

QUALITY

32

NS MASK

BAND-PASS

FILTER

IC90

Q90

NOISE DET

DISCHARGE

SWITCH

DATA

CLOCK

DATA, CLOCK

(Page 19)

MPX

(Page 19)

E

AM

(Page 19)

F

S-METER

(Page 19)

H

BU B+

E2P SIO

• SIGNAL PATH

: FM

: MW/LW

18

SCL (E2PROM)

10

E2P CKO

SDA (12CBUS)

SCL (12CBUS)

4

FM-AGC

51

FMAGC

BUFFER

Q1

DATA

12 13

IF-AM

19

CLOCK

9

I

IF-AM

(Page 19)

G

10

MDX-C6400R/C6500R/C6500RX

1919

4-3. BLOCK DIAGRAM – MAIN Section –

12

9

5

DATADADT

VOUTL

VOUTR

DADT,

BCK,

LRCK,

FS256

6

BCKBCK

LRCK

R-CH

1

XTI

15

17 16

RSTB

DM1

DM0

LRCK

FS256

EMPHASIS

AM

IF-AM

MPX

DATA, CLOCK

S-METER

LOCK

30

29

1

11

20

3

SEL

FD1L

AM

12

AMIF

13

MPX

DATA

CLOCK

R-CH

A

B

F

CLK

CONTROL

SOFT

MUTE

TONE

CONTROL

LOUDNESS/

VOLUME

INPUT SELECT,

ELECTRICAL VOLUME, FM MPX

IC151

PILOT

CANCELATION

DIGITAL

CONTROL

L.P.F.

PLL

BUS

AUDIO IN

CNJ151 (1/2)

(L)

(R)

AUDIO OUT

FRONT

AUDIO OUT

REAR

CNJ151 (2/2)

(L)

(R)

(L)

(R)

IIC BUS

SDA

SCL

SM

PILOT

DET

+STEREO ADJUST

+STEREO BLEND

L.P.F. S & H HIGH-CUT

D/A

CONVERTER

MUTING

Q281

(Page 17)

(Page 18)

G

(Page 18)

E

(Page 18)

(Page 17)

MD-ATT

MODE

CONTROL

ROTARY

ENCODER

RE901

D501

D653

J501

REMOTE IN

U-COM +5V

SW504

(NOSE DETECT)

CN500

MAIN BODY SIDE

14

1

CN901

FRONT PANEL SIDE

OSC

LIQUID CRYSTAL

DISPLAY DRIVER

IC901

LCD901

LIQUID CRYSTAL DISPLAY

DI

CL

SE

C953, R957

LSW810,

LSW901 – 917,

S901 – 904

DIGITAL FILTER,

D/A CONVERTER

IC101

INPUT

INTERFACE

DIGITAL

FILTER

NOISE

SHAPER

D/A

COMVERTER

4

DEMODULATOR

21

70 71

18

LEVEL

14

57

(C6500R, C6500RX)

MUTING

Q181

MUTING

Q271

MUTING

Q171

6263

BATTERY OFF

MUTE DRIVER

Q621

(C6500R, C6500RX)

BACK-UP B+

D622

D502

D302

X501

3.68MHz

X502

32.768kHz

RESET

RESET,

EMPHASIS

I

H

C

INPUT

MULTIPLEXER

LOUDNESSMUTE

MONO

FADER

MIXER

OUTLF

OUTLR

R-CH

OUTPUT

SELECTOR

AM/FM

NOISE

BLANKER

R-CH

D621

AUDIO OUT

(C6400R)

FL-IN

FL+

1

CN601 (1/2)

(POWER CONNECTOR)

POWER AMP

IC611

FRONT L (+)

FR-IN

RL-IN

RR-IN

AUX IN

16

15

11

14

12

22

4

FL–

9

FRONT L (–)

FR+

4

FRONT R (+)

FR–

12

FRONT R (–)

RL+

2

REAR L (+)

RL–

10

REAR L (–)

RR+

3

REAR R (+)

RR–

11

15

13

REAR R (–)

MUTE

TEST

TEL-ATT

STNBY

BEEP

AMPATT

AMPON

5

3

21

9

7

17

19

23

RCIN1

KEYIN0

KEYIN1

LOCKIN

I2C SIO

I2C CKO

REIN0

REIN1

KEYACK

LCDSO

LCDCKO

LCDCE

X1

X0

X1A

X0A

ATT

TELATT

RCIN0

16

60

59

48 46 47 36 37 76 6785 12 587473929315141335 79 81

AD-ON

NOSESW

DOORSW

TEST IN

84

VOLATT

VOLUME/BASS/TREBLE/

BALANCE/FADER CONTROL

D571

OSC

64

60

4

–

51

S04

–

S51 COM1

–

COM4

52

–

55

MUTING

CONTROL SWITCH

Q622

LEVEL SHIFT

Q571

D

KEY ACTIVE

SWITCH

Q651, 652

MASTER CONTROLLER

IC501 (2/3)

: MD PLAY

: FM

: MW/LW

: BUS AUDIO IN

05

• SIGNAL PATH

MDX-C6400R/C6500R/C6500RX

2020

4-4. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –

BU B+

RESET SIGNAL

GENERATOR

IC652

SIRCS BUFFER

Q704

REMOTE CONTROL

RECEIVER

IC951

BATTERY

DETECT

Q701

ACCESSORY CHECK

Q661

LEVEL SHIFT

Q706

6

8

4

CLK

ANT+B

TU8.7V

AMP+B

REGULATOR

IC671

COM8V

TU5.6V

5.6VON SW

8.7VON SW

STB

CLK IN

DATA OUT

DATA

2

RST

RESET

SWITCH

BUS ON

SWITCH

13

11

1

BUS ON

OUT

BUS

ON IN

12

9

DATA IN

SONY BUS INTERFACE

IC701

MASTER CONTROLLER

IC501 (3/3)

MD MECHANISM CONTROLLER

IC501 (2/2)

BUS ON SWITCH

Q705

BATT

BACK-UP B+

BUS ON

DATA

CLK

RESET

7

6

5

4

2

SIRCS

3

16

+B

ANT-R

AMP-R

6

5

CN701

BUS CONTROL IN

(FOR SONY BUS)

CN601 (2/2)

(POWER CONNECTOR)

REGULATOR

CONTROL SWITCH

Q633

FU601

COM +8V

(AUDIO CIRCUIT B+)

05

RST

3

BATT

BATTERY

SWITCH

10

BU IN

UNISI

50

UNISO

UNICKIO

MDMON

10

77

3

19

UNICKO

17

UNISI

18

UNISO

86

HSTX

11

24

SIRCS

90

65MD-ON

D301

D708

TH701

D702

D701

D662

LED810,

LSW810

LED810

(MD DISC SLOT)

VCC

TUNER +5.6V

RDS DECODER

(IC51) B+

TUNER +8.7V

VCC

7

ACC

REGULATOR

Q631

+12V

REGULATOR

Q361

+3.3V

REGULATOR

IC401, Q401

+5V

REGULATOR

Q362

B+ SWITCH

Q402, 403

+3.3V

D674

D673

BU B+

23

4

9

BU+B

5

10

11

8

6

TUNON

ILLON

82

7

1

PW ON

120

RSTX

SYSRST

20

UNICKI

BU-IN

BUS-ON

RESET

LINKOFF

BUIN

BUSON

ACC IN

29

DOORIND

48

61

60

30

49

46

DRIVER +5V

MOTOR/COIL DRIVER

(IC303) B+

LO- +12V

LOADING MOTOR

DRIVER (IC305) B+

REGULATOR

Q551

LCD B+

LCD DRIVER

(IC901) B+

REGULATOR

CONTROL SWITCH

Q363

REGULATOR

CONTROL SWITCH

Q250

BACK-UP B+

POWER AMP

(IC611) B+

SW503

RESET

D1

D2

PULL UP +5V

D676

U-COM +5V

D677

LED901-904,

LED910-915,

LSW901-917

LSW810

Z

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Sony MDX-C6500RX User manual

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