Sony CDXGT-250-M Service manual

CDX-GT250M

SERVICE MANUAL

Ver. 1.0 2006. 01

• The tuner and CD sections have no adjustments.

SPECIFICATIONS

E Model

Model Name Using Similar Mechanism CDX-GT250S
CD Drive Mechanism Type MG-611WA-186//Q
Optical Pick-up Name KSS1000E

CD Player section

Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and flutter: Below measurable limit

Tuner section

FM

Tuning range: 87.5 – 108.0 MHz (at 50 kHz step)

87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval: 50 kHz/200 kHz switchable
Antenna terminal: External antenna connector
Intermediate frequency: 10.7 MHz/450 kHz
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz:

0.5 % (stereo), 0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz

AM

Tuning range: 531 – 1,602 kHz (at 9 kHz step)

530 – 1,710 kHz (at 10 kHz step)
AM tuning interval: 9 kHz/10 kHz switchable
Antenna terminal: External antenna connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: 30 µV

Power amplifier section

Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W × 4 (at 4 ohms)

– Continued on next page –

9-887-070-01

2006A04-1
© 2006. 01

FM/AM COMPACT DISC PLAYER

Sony Corporation

eVehicle Division
Published by Sony Techno Create Corporation

1

CDX-GT250M

General

Outputs: Audio outputs terminal (sub/rear switchable)

Power antenna relay control terminal
Power amplifier control terminal

Inputs: Telephone ATT control terminal

Remote controller input terminal
Antenna input terminal
AUX input jack (stereo mini jack)

Tone controls: Low: ±10 dB at 60 Hz (XPLOD)

Mid: ±10 dB at 1 kHz (XPLOD)
High: ±10 dB at 10 kHz (XPLOD)

Power requirements: 12 V DC car battery (negative ground)
Dimensions: Approx. 178 × 50 × 179 mm (w/h/d)
Mounting dimensions: Approx. 182 × 53 × 161 mm (w/h/d)
Mass: Approx. 1.2 kg
Supplied accessories: Parts for installation and connections (1 set)

Card remote commander: RM-X151

Design and specifications are subject to change
without notice.

US and foreign patents licensed from Dolby
Laboratories.

SERVICE NOTES

CAUTION

Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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

The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick­up block. Therefore, when checking the laser diode emission, ob­serve from more than 30 cm away from the objective lens.

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.

If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical
pick-up block.

optical pick-up

This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.

This label is located on the bottom of the chassis.

semi-fixed resistor

TEST DISCS

This set can playback CD-R and CD-ROM discs. The following
test discs should be used to check the capability:

CD-R test disc TCD-R082LMT (Part No. J-2502-063-1)
CD-RW test disc TCD-W082L (Part No. J-2502-063-2)

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 P ARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.

2

CDX-GT250M

D

• CD playback

You can play CD-DA (also containing CD TEXT*), CD-R/CD­RW (MP3/WMA files also containing Multi Session and ATRAC
CD (ATRAC3 and ATRAC3plus format).

Type of discs Label on the disc

CD-DA

MP3

WMA

ATRAC CD

*A CD TEXT disc is a CD-DA that includes information such as

disc, artist and track name.

EXTENSION CABLE AND SERVICE POSITION

When repairing or servicing this set, connect the jig (extension cable)
as shown below.

z

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!

• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

• Connect the MAIN board (CNP301) and the SER VO board (CN2)
with the extension cable (Part No. J-2502-076-1).

MAIN BOARD
CNP301

J-2502-076-1

SERVO BOAR
CN2

3

CDX-GT250M

TABLE OF CONTENTS

1. GENERAL

Location of controls and basic operations ...............................5

Connections .............................................................................6

2. DISASSEMBL Y

2-1. Sub Panel Assy.................................................................... 8

2-2. CD Mechanism Block ......................................................... 8

2-3. Main Board .........................................................................9

2-4. Chassis (T) Sub Assy .......................................................... 9

2-5. Roller Arm Assy ................................................................ 10

2-6. Chassis (OP) Assy............................................................. 10

2-7. Optical Pick-up .................................................................11

2-8. SL Motor Assy (M902) ..................................................... 11

2-9. LE Motor Assy (M903)..................................................... 12

2-10. Servo Board....................................................................... 12

3. DIAGRAMS

3-1. Block Diagram – CD Section –......................................... 13

3-2. Block Diagram – Main Section –...................................... 14

3-3. Block Diagram – Display Section –.................................. 15

3-4. Circuit Boards Location .................................................... 16

3-5. Printed Wiring Boards – CD Mechanism Section – ......... 17

3-6. Schematic Diagram – CD Mechanism Section (1/2) – ..... 18

3-7. Schematic Diagram – CD Mechanism Section (2/2) – ..... 19

3-8. Printed Wiring Board – Main Section –............................ 20

3-9. Schematic Diagram – Main Section (1/3) – ...................... 21

3-10. Schematic Diagram – Main Section (2/3) –...................... 22

3-11. Schematic Diagram – Main Section (3/3) –...................... 23

3-12. Printed Wiring Board – Key Section –.............................. 24

3-13. Schematic Diagram – Key Section – ................................ 25

4. EXPLODED VIEWS

4-1. Main Section ..................................................................... 32

4-2. Front Panel Section ........................................................... 33

4-3. CD Mechanism Section (1) (MG-611WA-186//Q)........... 34

4-4. CD Mechanism Section (2) (MG-611WA-186//Q)........... 35

4-5. CD Mechanism Section (3) (MG-611WA-186//Q)........... 36

4-6. CD Mechanism Section (4) (MG-611WA-186//Q)........... 37

5. ELECTRICAL PARTS LIST ........................................ 38

4

Location of controls and basic operations

Main unit

Card remote commander
RM-X151

OFF

ATT

SEL

SOURCE

MODE

+

–

SCRL

DSPL

132

465

+

VOL

–

Refer to the pages listed for details. The
corresponding buttons on the card remote
commander control the same functions as those
on the unit.

A OFF button

B Volume control dial/select button 9

C EQ3 (equalizer) button 9

D Disc slot

E Display window
F Z (eject) button

G SCRL (scroll) button 8

H DSPL (display)/DIM (dimmer) button

I GP*

J (front panel release) button 4

To po wer off; stop the source.

To ad ju st volume (rotate); select setup items
(press and rotate).

To select an equalizer type (XPLOD,
VOCAL, CLUB, JAZZ, NEW AGE, ROCK,
CUSTOM or OFF).

To i n sert the disc (label side up), playback
starts.

To ej ec t the disc.

To sc ro ll the display item.

4, 8

To ch ange display item s (press); change the
display brightness (press and hold ).

1

/ALBM*2 –/+ buttons

To sk ip groups/albums (press); skip gr oups/
albums continuously (press and hold).

SECTION 1

GENERAL

K SEEK –/+ buttons

CD:
To sk ip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast­forward a track (press and hold).
Radio:
To tune in stations automatically (press); f ind
a station manually (press and hold).

L SOURCE button

To po wer on; change the source (Radio/CD/
AUX).

M BTM button 8

To st art the BTM function (press and hold).

N MODE button 8

To se le ct the radio band (FM/AM).

O RESET button (located behind the front

panel) 4

P Frequency select switch (located on

the bottom of the unit)

See “Frequency select switch” in the
supplied installation/connections manual.

Q Number buttons

CD:

(3): REP 8
(4): SHUF 8
(6): PAUS E

To p ause playback. To cancel, press

again.
Radio:
To re ce ive stored stations (press); store
stations (press and hold).

R SENS button

To im prove weak reception: LOCAL/
MONO.

S Receptor for the card remote

commander

T AUX input jack 10

To co nnect a portable audi o device.

CDX-GT250M

This section is extracted
from instruction manual.

The following buttons on the card remote
commander have also different buttons/functions
from the unit.

wa < (.)/, (>) buttons

To control CD/Radio, the same as (SEEK)
–/+ on the unit.

ws VOL (volume) +/– button

To adju st volume.

wd AT T ( attenuate) button

To atte nuate the sound. To cancel, press
again.

wf SEL (select) button

To s e lect items.

wg M (+)/m (–) buttons

To control CD, the same as (GP/ALBM) –/+
on the unit.

wh Number buttons

To r e ce ive stored stations (press); store
sations (press and hold).

*1

When an ATRAC CD is played.

*2

When an MP3/WMA is played.

Note

If the unit is turned off and the display disappears, it
cannot be operated with the card remote commander
unless

(SOURCE)

inserted to activate the unit first.

Tip

For details on how to replace the battery, see
“Replacing the lithium battery of the card remote
commander” on page 12.

on the unit is pressed, or a disc is

6

7

5

CDX-GT250M

• CONNECTIONS

from car aerial
desde la antena del automóvil

BUS

AUDIO

IN

1

*

L

R

Fuse (10 A)
Fusible (10 A)

1

*

RCA pin cord (not supplied)

2

*

AUDIO OUT can be switched to SUB

or REAR.

For details, see the supplied

Operating Instructions.

1

*

Cable con terminales RCA

(no suministrado)

2

*

AUDIO OUT (Salida de audio) puede

cambiarse a SUB (Secundaria) o REAR
(Posterior). Para obtener información,
consulte el manual de instrucciones
suministrado.

1

*

2

*

AMP REM

Max. supply current 0.3 A
Corriente máx. de alimentación de 0,3 A

Left
Izquierdo

Right
Derecho

Left
Izquierdo

Right
Derecho

Diagrama de conexión

1 A una superfi cie metálica del automóvil

Conecte primero el cable de conexión a masa negro,
y después los cables amarillo y rojo de entrada de
alimentación.

2 Al cable de control de la antena motorizada

o al cable de fuente de alimentación del
amplifi cador de señal de la antena

Notas

•

Si no se dispone de antena motorizada ni de amplifi cador
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 o lateral, consulte “Notas sobre los cables
de control y de fuente de alimentación”.

3 A AMP REMOTE IN de un amplifi cador de

potencia opcional

Esta conexión es sólo para amplifi cadores. La conexión de
cualquier otro sistema puede dañar la unidad.

4 Al terminal de alimentación de + 12 V que

recibe energía en la posición de accesorio
del interruptor de la llave de encendido

Notas

•

Si no hay posición de accesorio, conéctelo al terminal de
alimentación (batería) de + 12 V que recibe energía sin
interrupción.
Asegúrese de conectar primero el cable de conexión a
masa negro a una superfi cie metálica del automóvil.

•

Si el automóvil incorpora una antena de FM/AM en el
cristal trasero o lateral, consulte “Notas sobre los cables
de control y de fuente de alimentación”.

5 Al terminal de alimentación de + 12 V que

recibe energía sin interrupción

Asegúrese de conectar primero el cable de conexión a masa
negro a una superfi cie metálica del automóvil.

Notas sobre los cables de control y de fuente de
alimentación

•

El cable de control de la antena motorizada (azul) suministrará
cc de + 12 V cuando conecte la alimentación del sintonizador.

•

Si el automóvil dispone de una antena de FM/AM incorporada
en el cristal trasero o lateral, conecte el cable de control de
antena motorizada (azul) o el cable de entrada de alimentación
auxiliar (rojo) al terminal de alimentación del amplifi cador de
antena existente. Para obtener más información, consulte a su
distribuidor.

•

Con esta unidad no es posible utilizar una antena motorizada
sin caja de relé.

Conexión para protección de la memoria

Si conecta el cable de entrada de alimentación amarillo, el
circuito de la memoria recibirá siempre alimentación, aunque
apague el interruptor de encendido.

Notas sobre la conexión de los altavoces

•

Antes de conectar los altavoces, desconecte la alimentación
de la unidad.

•

Utilice altavoces con una impedancia de 4 a 8  con la
capacidad de potencia adecuada para evitar que se dañen.

•

No conecte los terminales de altavoz al chasis del automóvil,
ni conecte los terminales del altavoz derecho con los del
izquierdo.

•

No conecte el cable de conexión a masa de esta unidad al
terminal negativo (–) del altavoz.

•

No intente conectar los altavoces en paralelo.

•

Conecte solamente altavoces pasivos. Si conecta altavoces
activos (con amplifi cadores incorporados) a los terminales de
altavoz, puede dañar la unidad.

•

Para evitar fallos de funcionamiento, no utilice los cables de
altavoz incorporados instalados en el automóvil si su unidad
comparte un cable negativo común (–) para los altavoces
derecho e izquierdo.

•

No conecte los cables de altavoz de la unidad entre sí.

Nota sobre la conexión

Si el altavoz y el amplifi cador no están conectados
correctamente, aparecerá “FAILURE” en la pantalla. Si es así,
compruebe la conexión de ambos dispositivos.

Blue/white striped
Con rayas azules y blancas

White
Blanco

White/black striped
Con rayas blancas y negras

Grey
Gris

Grey/black striped
Con rayas grises y negras

Green
Verde

Green/black striped
Con rayas verdes y negras

Purple
Morado

Purple/black striped
Con rayas Moradas y negras

2

Black
Negro

Blue
Azul

Red
Rojo

Yellow
Amarillo

ANT REM

Corriente máx. de alimentación de 0,1 A

Max. supply current 0.1 A

6

SECTION 2

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

SET

2-1. SUB PANEL ASSY

(Page 8)

2-2. CD MECHANISM BLOCK

(Page 8)

CDX-GT250M

2-3. MAIN BOARD

(Page 9)

2-7. OPTICAL PICK-UP

(Page 11)

2-4. CHASSIS (T) SUB ASSY

(Page 9)

2-5. ROLLER ARM ASSY

(Page 10)

2-6. CHASSIS (OP) ASSY

(Page 10)

2-8. SL MOTOR ASSY (M902)

(Page 11)

2-10. SERVO BOARD

(Page 12)

2-9. LE MOTOR ASSY (M903)

(Page 12)

7

CDX-GT250M

s

)

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

2-1. SUB PANEL ASSY

3

two claws

1

two

screws

(+PTT 2.6

×

6)

2-2. CD MECHANISM BLOCK

7

CD mechanism block

4

sub panel assy

6

bracket (CD)

5

two

screws

(+PTT 2.6

2

two claw

×

4)

2

screw

(+PTT 2.6

4

CNP301

×

6)

3

1

screw

(+PTT 2.6

×

6

8

2-3. MAIN BOARD

1

(+BTT 2.6

three

screws

×

CDX-GT250M

5)

2

two

screws

×

8)

3

MAIN board

(+PTT 2.6

2-4. CHASSIS (T) SUB ASSY

2

two

screws

(+P 1.7

5

SENSOR board

3

claw

×

2.2)

4

claw

1

two

screws

×

(+P 1.7

6

2.2)

chassis (T) sub assy

9

CDX-GT250M

)

2-5. ROLLER ARM ASSY

4

gear (RA1)

1

spring (RAL-B)

3

washer

5

roller arm assy

2

spring (RAR-B)

2-6. CHASSIS (OP) ASSY

0

coil spring (damper)

4

washer

5

gear (LE1)

lever (D)

6

8

qa

chassis (OP) assy

1

optical pick-up (16 core

(CN1)

9

two coil springs (damper)

7

slider (R)

10

2

Remove the six solderings.

3

tension spring (KF60)

2-7. OPTICAL PICK-UP

)

)

5

claw

2

chucking arm sub assy

1

tension coil spring (CHKG

7

optical pick-up

CDX-GT250M

2-8. SL MOTOR ASSY (M902)

6

main shaft

4

rack (SL)

3

screw
(+B 1.4

×

5)

2

SL motor assy (M902)

1

screw

(+P 1.4

×

1.8

11

CDX-GT250M

2-9. LE MOTOR ASSY (M903)

qf

two toothed lock

(+M 1.4

bracket (LEM-N)

qs

(+M 1.7

screw

×

)

screws

2.5)

6

screw

(+P 1.7

×

qd

2.2)

qa

screw

(+M 1.7

0

gear (LE) assy

×

2.5)

qg

LE motor assy

(M903)

7

leaf spring (LE)

8

screw

(+M 1.7

9

bearing (LEB-N)

2

washer

3

gear (LE1)

lever (D)

×

2.5)

4

5

slider (R)

2-10. SERVO BOARD

1

Remove the eight solderings.

1

Remove the two solderings.

6

SERVO board

2

Remove the three solderings.

4

screw

5

claw

12

3

optical pick-up (16 core)

(CN1)

3-1. BLOCK DIAGRAM — CD SECTION —

DETECTOR

PD1

PD2

E

F

LASER DIODE

PICK-UP BLOCK

(KSS1000E)

2-AXIS DEVICE

(FOCUS)

(TRACKING)

PD LD

OPTICAL

PD2

PD1

I-V AMP

MON OUT

FCS+

FCS–

TRK+

TRK–

RFEQO

FPI2

96

FNI2

94

FPI1

97

FNI1

95

E

F

LD

AUTOMATIC

POWER

CONTROL

M902

(SLED)

Q21

M

100

98

91

16

15

18

17

14

13

RFRP

TNI

TPI

LDO

FOCUS/TRACKING COIL DRIVE,

SLED/SPINDLE/LOADING

MOTOR DRIVE

VO4–

VO4+

VO3–

VO3+

VO1+

VO1–

SECTION 3

DIAGRAMS

83

3

TEI

6

92

MDI

IC1

OPIN4–

26

OPOUT4

25

OPIN3–

23

OPOUT3

22

OPOUT1

4

OPOUT2

7

CDX-GT250M

• R-ch is omitted due to same as L-ch.

• Signal Path

: CD PLAY

RFO

RFI

81

RFRPI

82

RFZI

2

TEZI

7

89

RF AMP,DIGITAL SERVO,

DIGITAL SIGNAL PROCESSOR

IC2

AGCI

88

F0O

9

TRO

10

FMO

12

DMO

13

PIO3
PIO0

MSTBY

ZDET

/RST

/CCE
BUCK
BUS3
BUS2
BUS1
BUS0

30

LO

27

RO

XI

XO

R-CH

UNISI

56

RXD

25

UNISO

57

TXD

26

UNICKI

58

BUS ON

DEC XMUTE

51
48
36
58
37
43
42
41
40
39
38

23

24

X2

16.9344MHz

SW1

(DOWN)

SW2

(SELF)

SW3

(DISC IN)

X1

12MHz

37

DEC INT

30

DEC SSTBY

27

CD ZDET

15

CD XRST

14

CD XCCE

13

CD BUCK

12

CD BUS3

11

CD BUS2

10

CD BUS1

8

CD BUS0

7

X1

81

X0

80

MEC_DSW

46

MEC_SELFSW

53

MEC_INSW

45

CD

SYSTEM CONTROL

IC3

MECON CHK

BU IN
A ATT

RSTX

EJECT OK

MECON

CDON

ZMUTE

CDON CHK

CDON

1500MV

50
51
60

75

SYSTEM CONTROL

61
63
64
66

67

68

+1.5V

1

MECHA+6V

D+3.3V

+1.5V ON/OFF

SWITCH

Q2,3

+1.5V

EJECT OK SW

89

CDM ON

99

CD ON

98

Z MUTE

93

+1.5V REG

VOUT

IC6

UNI SI

UNI SO

UNI CLK
BUS ON
B/U CHECK
ATT

SYS RST

IC501 (1/3)

VDD

CE

CD-L

15
3

MAIN

A

SECTION

(Page 14)

MAIN

B

SECTION

(Page 14)

DISPLAY

C

SECTION

(Page 15)

BU+3.3V

CDX-GT250M

M901

(SPINDLE)

M903

(LOADING)

12

M

M

VO2+

11

VO2–

MUTE

21

10

VOL+

9

VOL–

FWD

REV

1

28

SW4

(LIMIT)

42

6

43

44

MEC_LIMIT

DRVON

MEC LOAD

MEC EJECT

13 13

CDX-GT250M

3-2. BLOCK DIAGRAM — MAIN SECTION —

ELECTRONIC VOLUME

IC401

J1

(ANTENNA)

(TUNER UNIT)

1

ANT

MUTE CONDITION

TU1

E2P VDD

S-METER
TU MUTE

E2P SCL

E2P SDA

QUALITY

L-CH
R-CH

VCC

TU VDD

TU-SCL
TU-SDA

CD

SECTION

(Page 13)

J901

AUX

4
3

AUDIO+8.3V

10
11

TU+5V
BU+3.3V

15

SCL

13

SDA

14

6
7

16
17

8
5

R-CH

CD-L

A

AUX

BUFFER

IC901

R-CH

R-CH

9

CD LCH

8

CD RCH

5

AUX LCH

3

AUX RCH

7

TU LCH

6

TU RCH

SYSTEM CONTROL

39

VSM

12

TU ATT

25

EEP CKO

24

EEP SIO

53

TU ATT IN

38

QUALITY

OUT SUB-L

OUT SUB-R

IC501 (2/3)

OUT FL

OUT RL

OUT FR

OUT RR

MUTE

SCL
SDA

I2C CKO

I2C SIO

VOL ATT

ATT

BEEP

AMP STB

DIAG

17
18

23

22

25
24

29

30
31

33
34

9

86

5

26

8

R-CH

R-CH (FRONT)
R-CH (REAR)

SCL
SDA

SCL
SDA

MUTE

Q481

MUTE DRIVE

Q478,479

D511

R-CH

MUTE

Q441

D479

MUTE
Q461

BATT

J330

L

AUDIO OUT

REAR

R

IC2-BUS
CONTROLLED
POWER AMP/

MULTIPLE

VOLTAGE

REGULATOR

SDA
SCL

IC750

12

IN FL

11

IN RL

2

SDA

4

SCL

16

BEEP

22

STB

25

DIAG

OUT FL+
OUT FL–

OUT RL+
OUT RL–

AMP-REM

ANT-REM

VP1
VP2

AUDIO8.3V

B.UP+B

SERVO3.3V

MECHA6V

PANEL+B

5
3

9
7

R-CH

29
27

BATT

VP

35
20

6

30

AUDIO+8.3V

37

BU+3.3V

31

SERVO+3.3V

33

MECHA+6V

34

PANEL+B

FU601

CN601

10

12

11

16

1

FL+

9

FL–

2

RL+
RL–

4

FR+
FR–

3

RR+
RR–

5

AMP-REM

6

ANT-REM

CD

SECTION

(Page 13)

B

UNI SI

UNI SO

UNI CLK
BUS ON

B/U CHECK
ATT

D512

58

59
60
87

UNISI

UNISO
UNISCK
BUS ON

ACC IN

TEST IN

BU IN

ACCESSORY

72

73

54

BATTERY CHECK

Q580-582

• R-CH is omitted due to same as L-CH.

• Signal Path

: CD PLAY

: FM

: AM

: AUX

D580,581

BATT

TU+5V

TU+5V REG

Q1

CHECK

Q631

AUDIO+8.3V

7

ACC

15

TEST

CDX-GT250M

1414