DOWNLOAD Sony CDX-GT620U / CDX-GT627UE / CDX-GT670U / CDX-GT670US Service Manual ↓ Size: 8.04 MB | Pages: 54 in PDF or view online for FREE

Model
CDX-GT620U CDX-GT627UE CDX-GT670U CDX-GT670US
Pages
54
Size
8.04 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-gt620u-cdx-gt627ue-cdx-gt670u-cdx-gt670us.pdf
Date
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CDX-GT620U/GT627UE/GT670U/GT670US
9
•  CDX-GT670U: E model/GT670US
L
R
FRONT
AUDIO OUT
REAR
AUDIO OUT
REMOTE
IN
SUB OUT (MONO)
REAR
AUDIO OUT
FRONT
SUB
AMP REM
ANT REM
*
1
*
2
*
1
from car antenna (aerial)
desde la antena del automóvil
Fuse (10 A)
Fusible (10 A)
Left
Izquierdo
Right
Derecho
Left
Izquierdo
Right
Derecho
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
Blue/white striped
Con rayas azules y blancas
Max. supply current 0.3 A
Corriente máx. de alimentación de 0,3 A
Black
Negro
Blue
Azul
Red
Rojo
Yellow
Amarillo
Max. supply current 0.1 A
Corriente máx. de alimentación de 0,1 A
*
1
RCA pin cord (not supplied)
*
2
Insert with the cord upwards.
*
1
Cable con terminales RCA 
(no suministrado)
*
2
Insertar con el cable hacia arriba.
ATT
ILLUMINATION
Light blue
Azul celeste
Orange/white striped
Con rayas naranjas y blancas
Connection diagram
 To a metal surface of the car
First connect the black ground (earth) lead, then connect the 
yellow and red power supply leads.
 To the power antenna (aerial) control lead or 
power supply lead of antenna (aerial) booster 
Notes
• It is not necessary to connect this lead if there is no power
antenna (aerial) or antenna (aerial) booster, or with a 
manually-operated telescopic antenna (aerial).
• When your car has a built-in FM/MW/SW antenna (aerial)
in the rear/side glass, see “Notes on the control and power
supply leads.”
 To AMP REMOTE IN of an optional power
amplifier
This connection is only for amplifiers. Connecting any other 
system may damage the unit.
 To the interface cable of a car telephone
 To a car’s illumination signal
Be sure to connect the black ground (earth) lead to a metal 
surface of the car first.
 To the +12 V power terminal which is 
energized in the accessory position of the 
ignition 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 (earth) lead to a 
metal surface of the car first.
• When your car has a built-in FM/MW/SW antenna (aerial)
in the rear/side glass, see “Notes on the control and power
supply leads.”
 To the +12 V power terminal which is 
energized at all times
Be sure to connect the black ground (earth) lead to a metal 
surface of the car first.
Notes on the control and power supply leads
• The power antenna (aerial) control lead (blue) supplies +12 V
DC when you turn on the tuner.
• When your car has built-in FM/MW/SW antenna (aerial) in the 
rear/side glass, connect the power antenna (aerial) control 
lead (blue) or the accessory power supply lead (red) to the 
power terminal of the existing antenna (aerial) booster. For
details, consult your dealer.
• A power antenna (aerial) without a relay box cannot be used 
with this unit.
Memory hold connection
When the yellow power supply lead is connected, power will 
always be supplied to the memory circuit even when the ignition 
switch is turned off.
Notes on speaker connection
• Before connecting the speakers, turn the unit off.
• Use speakers with an impedance of 4 to 8 ohms, and with 
adequate power handling capacities to avoid its damage.
• Do not connect the speaker terminals to the car chassis, or 
connect the terminals of the right speakers with those of the 
left speaker.
• Do not connect the ground (earth) lead of this unit to the 
negative (–) terminal of the speaker.
• Do not attempt to connect the speakers in parallel.
• Connect only passive speakers. Connecting active speakers
(with built-in amplifiers) to the speaker terminals may damage 
the unit.
• To avoid a malfunction, do not use the built-in speaker leads 
installed in your car if the unit shares a common negative (–) 
lead for the right and left speakers.
• Do not connect the unit’s speaker leads to each other.
Note on connection
If speaker and amplifier are not connected correctly, “FAILURE”
appears in the display. In this case, make sure the speaker and 
amplifier are connected correctly.
Diagrama de conexión
 A una superficie metálica del automóvil
Conecte primero el cable de conexión a masa negro, y después 
los cables amarillo y rojo de entrada de alimentación.
 Al cable de control de la antena motorizada 
o al cable de fuente de alimentación del 
amplificador de señal de la 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 dispone de una antena de FM/MW/SW 
integrada en el cristal trasero o lateral, consulte “Notas sobre 
los cables de control y de fuente de alimentación”.
 A AMP REMOTE IN de un amplificador de 
potencia opcional
Esta conexión es solamente para amplificadores. La conexión
de cualquier otro sistema puede dañar la unidad.
 Al cable de interfaz de un teléfono para 
automóvil
 A una señal de iluminación del automóvil
Asegúrese de conectar primero el cable de conexión a masa 
negro a una superficie metálica del automóvil.
 Al terminal de alimentación de +12 V que 
recibe energía en la posición de accesorios del 
interruptor de la llave de la llave de encendido
Notas
• Si no hay posición de accesorios, 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 superficie metálica del automóvil.
• Si el automóvil dispone de una antena de FM/MW/SW 
integrada en el cristal trasero o lateral, consulte “Notas sobre 
los cables de control y de fuente de alimentación”.
 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 superficie 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/MW/SW integrada
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 amplificador 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 la llave 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 
Ω 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 amplificadores integrados) a los terminales de 
altavoz, puede dañar la unidad.
• Para evitar fallas de funcionamiento, no utilice los cables de 
altavoz integrados instalados en el automóvil si la 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 amplificador no están conectados correctamente,
aparecerá “FAILURE” en la pantalla. Si es así, compruebe la 
conexión de ambos dispositivos.
CDX-GT620U/GT627UE/GT670U/GT670US
10
•  CDX-GT670U: Saudi Arabian model
L
R
FRONT
AUDIO OUT
REAR
AUDIO OUT
REMOTE
IN
SUB OUT (MONO)
REAR
AUDIO OUT
FRONT
SUB
*
1
RCA pin cord (not supplied)
*
2
Insert with the cord upwards.
White
Green
Purple
White/black striped
Gray/black striped
Green/black striped
Gray
Left
Right
Left
Right
ANT REM
Purple/black striped
*
1
*
1
*
2
from car antenna (aerial) 
Fuse (10 A)
AMP REM
Blue/white striped
Max. supply current 0.3 A
Black
Blue
Red
Yellow
Max. supply current 0.1 A
ATT
ILLUMINATION
Light blue
Orange/white striped
Connection diagram
 To a metal surface of the car
First connect the black ground (earth) lead, then connect the 
orange/white stripped, yellow, and red power input leads.
 To the power antenna (aerial) control lead or 
power supply lead of antenna (aerial) booster 
amplifier
Notes
• It is not necessary to connect this lead if there is no power
antenna (aerial) or antenna (aerial) booster, or with a 
manually-operated telescopic antenna (aerial).
• When your car has a built-in FM/MW/SW antenna (aerial)
in the rear/side glass, see “Notes on the control and power
supply leads.”
 To AMP REMOTE IN of an optional power
amplifier
This connection is only for amplifiers. Connecting any other 
system may damage the unit.
 To the interface cable of a car telephone
 To a car’s illumination signal
Be sure to connect the black ground (earth) lead to a metal 
surface of the car first.
 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 (earth) lead to a 
metal surface of the car first.
• When your car has a built-in FM/MW/SW antenna (aerial)
in the rear/side glass, see “Notes on the control and power
supply leads.”
 To the +12 V power terminal which is 
energized at all times
Be sure to connect the black ground (earth) lead to a metal 
surface of the car first.
Notes on the control and power supply leads
• The power antenna (aerial) control lead (blue) supplies +12 V
DC when you turn on the tuner.
• When your car has built-in FM/MW/SW antenna (aerial) in the 
rear/side glass, connect the power antenna (aerial) control 
lead (blue) or the accessory power supply lead (red) to the 
power terminal of the existing antenna (aerial) booster. For
details, consult your dealer.
• A power antenna (aerial) without a relay box cannot be used 
with this unit.
Memory hold connection
When the yellow power input lead is connected, power will 
always be supplied to the memory circuit even when the ignition 
switch is turned off.
Notes on speaker connection
• Before connecting the speakers, turn the unit off.
• Use speakers with an impedance of 4 to 8 ohms, and with 
adequate power handling capacities to avoid its damage.
• Do not connect the speaker terminals to the car chassis, or 
connect the terminals of the right speakers with those of the 
left speaker.
• Do not connect the ground (earth) lead of this unit to the 
negative (–) terminal of the speaker.
• Do not attempt to connect the speakers in parallel.
• Connect only passive speakers. Connecting active speakers
(with built-in amplifiers) to the speaker terminals may damage 
the unit.
• To avoid a malfunction, do not use the built-in speaker leads 
installed in your car if the unit shares a common negative (–) 
lead for the right and left speakers.
• Do not connect the unit’s speaker leads to each other.
Note on connection
If speaker and amplifier are not connected correctly, “FAILURE”
appears in the display. In this case, make sure the speaker and 
amplifier are connected correctly.
CDX-GT620U/GT627UE/GT670U/GT670US
11
SECTION  3
DISASSEMBLY
• 
This set can be disassembled in the order shown below.
3-1. SUB 
PANEL 
ASSY 
 (Page 
12) 
3-2.  CD MECHANISM BLOCK 
 (Page 
12) 
SET
3-3. MAIN 
BOARD 
 (Page 
13) 
3-5.  CHASSIS (T) SUB ASSY 
 (Page 
14) 
3-6.  ROLLER ARM ASSY 
 (Page 
14) 
3-7. CHASSIS 
(OP) 
ASSY 
 (Page 
15) 
3-8.
CHUCKING ARM SUB ASSY 
 (Page 
15) 
3-9.
SLED MOTOR ASSY 
 (Page 
16) 
3-10. OPTICAL PICK-UP SECTION
 (Page 
17)
3-11.  OPTICAL PICK-UP
 (Page 
17)
3-4. SERVO 
BOARD 
 (Page 
13) 
CDX-GT620U/GT627UE/GT670U/GT670US
12
Note:  Follow the disassembly procedure in the numerical order shown below.
3-1.   SUB  PANEL  ASSY
3-2.   CD  MECHANISM  BLOCK
two claws
two claws
 sub panel assy 
 two screws
     (+PTT 2.6 
× 6)
flexible flat cable (23 core)
 (CN370)
CN203 (3P)
CN350
screw
 (+PTT 
2.6 
× 6)
screw
 (+PTT 
2.6 
× 6)
two screws
 (+PTT 
2.6 
× 4)
bracket (CD)
CD mechanism block
Page of 54
Display

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