Sony CDX-GT420U / CDX-GT424U / CDX-GT427UE / CDX-GT470U / CDX-GT470US Service Manual ▷ View online
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
5
SECTION 1
SERVICE NOTE
EXTENSION CABLE AND SERVICE POSITION
When repairing or servicing this set, connect the jig (extension
cable) as shown below.
When repairing or servicing this set, connect the jig (extension
cable) as shown below.
• Connect the MAIN board (CN350) and the SERVO board
(CN401) with the extension cable (Part No. J-2502-076-1).
NOTE FOR REPLACEMENT OF THE SERVO BOARD
When repairing, the complete SERVO board (A-1362-921-A)
should be replaced since any parts in the SERVO board cannot be
repaired.
When repairing, the complete SERVO board (A-1362-921-A)
should be replaced since any parts in the SERVO board cannot be
repaired.
NOTE FOR REPLACEMENT OF THE USB CONNECTOR
(J11)
To replace the USB connector requires alignment.
1. Insert the USB connector into the front panel.
2. Place the KEY board on the front panel and align the terminals
(J11)
To replace the USB connector requires alignment.
1. Insert the USB connector into the front panel.
2. Place the KEY board on the front panel and align the terminals
of the USB connector with the holes in the KEY board.
3. Solder the four terminals of the connector.
SERVO BOARD
CN401
CN401
MAIN BOARD
CN350
CN350
J-2502-076-1
KEY board
front panel
USB (socket) connector
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
6
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
• LOCATION OF CONTROLS
• CDX-GT420U: US model
• CDX-GT420U: AEP, UK, Russian model/GT424U/GT427UE
6
Location of controls and basic operations
Main unit
Card remote commander
RM-X151
RM-X151
This section contains instructions on the location
of controls and basic operations. For details, see
the respective pages.
For USB device operation, see “USB devices” on
page 10.
The corresponding buttons on the card remote
commander control the same functions as those
on the unit.
" OFF button
To power off; stop the source.
#
(BROWSE) button page 8
To enter the Quick-BrowZer mode.
$ Control dial/select button page 8, 11
To adjust volume/select search category
(rotate); select setup items (press and rotate).
% SOURCE button
To power on; change the source (Radio/CD/
USB/AUX).
& Disc slot
Insert the disc (label side up), playback
starts.
' Display window
( USB terminal page 10
To connect to the USB device.
) ;(eject) button
To eject the disc.
*
(front panel release) button page 5
+
(BACK) button page 8
To return to the previous display.
, Receptor for the card remote
commander
EQ3
BTM
DSPL
L
R
C
S
F
U
H
S
P
E
R
1
2
3
4
5
6
PAUSE
BROWSE
BACK
SEEK
SEEK
MODE
SOURCE
PUSH ENTER / SELECT
DM
AUX
OFF
ALBUM
RB
RE
R
RT
RGRH
RI
RL
RK
RM
OFF
DSPL
SCRL
SEL
SOURCE
MODE
1
3
2
4
6
5
ATT
VOL
+
–
+
–
XG
RE
RE
X
XB
XE
XT
XK
XH
XI
7
- SEEK –/+ buttons
CD/USB
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
. MODE button page 9
To select the radio band (FM/AM); select the
play mode of ATRAC Audio Device.
/ EQ3 (equalizer) button page 11
To select an equalizer type (XPLOD,
VOCAL, EDGE, CRUISE, SPACE,
GRAVITY, CUSTOM or OFF).
0 BTM button page 9
To start the BTM function (press and hold).
1 RESET button (located behind the front
panel) page 4
2 Number buttons
CD/USB:
/ ALBUM –/+
/ ALBUM –/+
To skip albums (press); skip albums
continuously (press and hold).
REP page 9
SHUF page 9
DM+ page 4
SHUF page 9
DM+ page 4
To activate the DM+ function, set
“DM+-ON.” To cancel, set “DM+-
OFF.”
PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
3 DSPL (display)/SCRL (scroll) button
page 9
To change display items (press); scroll the
To change display items (press); scroll the
display item (press and hold).
4 AUX input jack page 12
To connect a portable audio device.
The following buttons on the card remote
commander have also different buttons/functions
from the unit. Remove the insulation film before
use (page 4).
X ()/
() buttons
To control CD/radio/USB, the same as
4&&, –/+ on the unit.
4&&, –/+ on the unit.
Setup, sound setting, etc., can be operated by
XB DSPL (display) button
To change display items.
XT VOL (volume) +/– button
To adjust volume.
XE ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
XG SEL (select) button
The same as the select button on the unit.
During the Quick-BrowZer mode, 4&-
(select) is inactive.
XH . (+)/N (–) buttons
To control CD/USB, the same as
/
(ALBUM –/+) on the unit.
Setup, sound setting, etc., can be operated by
. N.
. N.
XI SCRL (scroll) button
To scroll the display item.
XK Number buttons
To receive stored stations (press); store
stations (press and hold).
Notes
• When ejecting/inserting a disc, keep any USB
• When ejecting/inserting a disc, keep any USB
devices disconnected to avoid damage to the disc.
• If the unit is turned off and the display disappears, it
cannot be operated with the card remote
commander unless 4063$& on the unit is
commander unless 4063$& on the unit is
pressed, or a disc is inserted to activate the unit first.
About USB cap
When not using the USB terminal ( (), use the
When not using the USB terminal ( (), use the
supplied USB cap to prevent dust or dirt entering.
Keep the USB cap out of the reach of children to
prevent accidental swallowing.
Keep the USB cap out of the reach of children to
prevent accidental swallowing.
6
Location of controls and basic operations
Main unit
Card remote commander
RM-X151
RM-X151
This section contains instructions on the location
of controls and basic operations. For details, see
the respective pages.
For USB device operation, see “USB devices” on
page 11.
The corresponding buttons on the card remote
commander control the same functions as those
on the unit.
" OFF button
To power off; stop the source.
#
(BROWSE) button page 8
To enter the Quick-BrowZer mode.
$ Control dial/select button page 8, 12
To adjust volume/select search category
(rotate); select setup items (press and rotate).
% SOURCE button
To power on; change the source (Radio/CD/
USB/AUX).
& Disc slot
Insert the disc (label side up), playback
starts.
' Display window
( USB terminal page 11
To connect to the USB device.
) ;(eject) button
To eject the disc.
*
(front panel release) button page 5
+
(BACK) button page 8
To return to the previous display.
, Receptor for the card remote
commander
EQ3
AF/TA
DSPL
L
R
C
S
F
U
H
S
P
E
R
PTY
1
2
3
4
5
6
PAUSE
BROWSE
BACK
SEEK
SEEK
MODE
SOURCE
PUSH ENTER /SELECT
DM
AUX
OFF
ALBUM
RB
RE
R
RT
RGRH
RI
RL
RK
RM
OFF
DSPL
SCRL
SEL
SOURCE
MODE
1
3
2
4
6
5
ATT
VOL
+
–
+
–
XG
RE
RE
X
XB
XE
XT
XK
XH
XI
7
- SEEK –/+ buttons
CD/USB:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
. MODE button page 9
To select the radio band (FM/MW/LW);
select the play mode of ATRAC Audio
Device.
/ EQ3 (equalizer) button page 12
To select an equalizer type (XPLOD,
VOCAL, EDGE, CRUISE, SPACE,
GRAVITY, CUSTOM or OFF).
0 AF (Alternative Frequencies)/
TA (Traffic Announcement)/
PTY (Program Type) button page 10,
11
To set AF and TA (press); select PTY (press
PTY (Program Type) button page 10,
11
To set AF and TA (press); select PTY (press
and hold) in RDS.
1 RESET button (located behind the front
panel) page 4
2 Number buttons
CD/USB:
/ : ALBUM –/+
/ : ALBUM –/+
To skip albums (press); skip albums
continuously (press and hold).
: REP page 9
: SHUF page 9
: DM+ page 4
: SHUF page 9
: DM+ page 4
To activate the DM+ function, set
“DM+-ON.” To cancel, set “DM+-
OFF.”
: PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
3 DSPL (display)/SCRL (scroll) button
page 9
To change display items (press); scroll the
To change display items (press); scroll the
display item (press and hold).
4 AUX input jack page 13
To connect a portable audio device.
The following buttons on the card remote
commander have also different buttons/functions
from the unit. Remove the insulation film before
use (page 4).
X ()/
( ) buttons
To control CD/radio/USB, the same as
4&&, –/+ on the unit.
4&&, –/+ on the unit.
Setup, sound setting, etc., can be operated by
.
.
XB DSPL (display) button
To change display items.
XT VOL (volume) +/– button
To adjust volume.
XE ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
XG SEL (select) button
The same as the select button on the unit.
During the Quick-BrowZer mode, 4&-
(select) is inactive.
XH . (+)/N (–) buttons
To control CD/USB, the same as
/
(ALBUM –/+) on the unit.
Setup, sound setting, etc., can be operated by
. N.
. N.
XI SCRL (scroll) button
To scroll the display item.
XK Number buttons
To receive stored stations (press); store
stations (press and hold).
Notes
• When ejecting/inserting a disc, keep any USB
• When ejecting/inserting a disc, keep any USB
devices disconnected to avoid damage to the disc.
• If the unit is turned off and the display disappears, it
cannot be operated with the card remote
commander unless 4063$& on the unit is
commander unless 4063$& on the unit is
pressed, or a disc is inserted to activate the unit first.
About USB cap
When not using the USB terminal ((), use the
When not using the USB terminal ((), use the
supplied USB cap to prevent dust or dirt entering.
Keep the USB cap out of the reach of children to
prevent accidental swallowing.
Keep the USB cap out of the reach of children to
prevent accidental swallowing.
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
7
• CDX-GT470U/GT470US
6
Location of controls and basic operations
Main unit
Card remote commander
RM-X151
RM-X151
This section contains instructions on the location
of controls and basic operations. For details, see
the respective pages.
For USB device operation, see “USB devices” on
page 10.
The corresponding buttons on the card remote
commander control the same functions as those
on the unit.
" OFF button
To power off; stop the source.
#
(BROWSE) button page 8
To enter the Quick-BrowZer mode.
$ Control dial/select button page 8, 11
To adjust volume/select search category
(rotate); select setup items (press and rotate).
% SOURCE button
To power on; change the source (Radio/CD/
USB/AUX).
& Disc slot
Insert the disc (label side up), playback
starts.
' Display window
( USB terminal
page 10
To connect to the USB device.
) ;(eject) button
To eject the disc.
*
(front panel release) button page 5
+
(BACK) button page 8
To return to the previous display.
, Receptor for the card remote
commander
EQ3
BTM
DSPL
L
R
C
S
F
U
H
S
P
E
R
1
2
3
4
5
6
ALBUM
PAUSE
BROWSE
BACK
SEEK
SEEK
MODE
SOURCE
PUSH ENTER /SELECT
DM
AUX
OFF
RB
RE
R
RT
RGRH
RI
RM
RL
RK
X
OFF
DSPL
SCRL
SEL
SOURCE
MODE
1
3
2
4
6
5
ATT
VOL
+
–
+
–
XH
RE
RE
XB
XT
XG
XE
XL
XI
XK
7
- SEEK –/+ buttons
CD/USB:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
. MODE button page 9
To select the radio band (FM/MW/SW);
select the play mode of ATRAC Audio
Device.
/ EQ3 (equalizer) button page 11
To select an equalizer type (XPLOD,
VOCAL, EDGE, CRUISE, SPACE,
GRAVITY, CUSTOM or OFF).
0 BTM button page 9
To start the BTM function (press and hold).
1 RESET button (located behind the front
panel) page 4
2 Frequency select switch (located on the
bottom of the unit)
See “Frequency select switch” in the
See “Frequency select switch” in the
supplied installation/connections manual.
3 Number buttons
CD/USB:
/ : ALBUM –/+
/ : ALBUM –/+
To skip albums (press); skip albums
continuously (press and hold).
: REP page 9
: SHUF page 9
: DM+ page 4
: SHUF page 9
: DM+ page 4
To activate the DM+ function, set
“DM+-ON.” To cancel, set “DM+-
OFF.”
: PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
4 DSPL (display)/SCRL (scroll) button
page 9
To change display items (press); scroll the
To change display items (press); scroll the
display item (press and hold).
5 AUX input jack page 12
To connect a portable audio device.
The following buttons on the card remote
commander have also different buttons/functions
from the unit. Remove the insulation film before
use (page 4).
XB ()/
( ) buttons
To control CD/radio/USB, the same as
4&&, –/+ on the unit.
4&&, –/+ on the unit.
Setup, sound setting, etc., can be operated by
.
.
XT DSPL (display) button
To change display items.
XE VOL (volume) +/– button
To adjust volume.
XG ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
XH SEL (select) button
The same as the select button on the unit.
During the Quick-BrowZer mode, 4&-
(select) is inactive.
XI . (+)/N (–) buttons
To control CD/USB, the same as
/
(ALBUM –/+) on the unit.
Setup, sound setting, etc., can be operated by
. N.
. N.
XK SCRL (scroll) button
To scroll the display item.
XL Number buttons
To receive stored stations (press); store
stations (press and hold).
Notes
• When ejecting/inserting a disc, keep any USB
• When ejecting/inserting a disc, keep any USB
devices disconnected to avoid damage to the disc.
• If the unit is turned off and the display disappears, it
cannot be operated with the card remote
commander unless 4063$& on the unit is
commander unless 4063$& on the unit is
pressed, or a disc is inserted to activate the unit first.
About USB cap
When not using the USB terminal ((), use the
When not using the USB terminal ((), use the
supplied USB cap to prevent dust or dirt entering.
Keep the USB cap out of the reach of children to
prevent accidental swallowing.
Keep the USB cap out of the reach of children to
prevent accidental swallowing.
Ver. 1.1
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
8
• CONNECTIONS
• CDX-GT420U: US model
L
R
REAR/SUB
AUDIO OUT
REAR / SUB
AUDIO OUT
*
2
REMOTE
IN
AMP REM
Max. supply current 0.3 A
Courant max. fourni 0,3 A
Courant max. fourni 0,3 A
Fuse (10 A)
Fusible (10 A)
Fusible (10 A)
Blue/white striped
Rayé bleu/blanc
Rayé bleu/blanc
ANT REM
Red
Rouge
Rouge
Yellow
Jaune
Jaune
Black
Noir
Noir
Blue
Bleu
Bleu
White
Blanc
Blanc
Green
Vert
Vert
Purple
Violet
Violet
White/black striped
Rayé blanc/noir
Rayé blanc/noir
Gray/black striped
Rayé gris/noir
Rayé gris/noir
Green/black striped
Rayé vert/noir
Rayé vert/noir
Gray
Gris
Gris
Left
Gauche
Gauche
Right
Droit
Droit
Left
Gauche
Gauche
Right
Droit
Droit
*
1
RCA pin cord (not supplied)
*
2
AUDIO OUT can be switched SUB or
REAR. For details, see the supplied
Operating Instructions.
*
3
Insert with the cord upwards.
*
1
Cordon à broche RCA (non fourni)
*
2
AUDIO OUT peut être commuté sur SUB
ou REAR. Pour obtenir plus de détails,
reportez-vous au mode d’emploi fourni.
*
3
Insérez avec le câble vers le haut.
Purple/black striped
Rayé Violet/noir
Rayé Violet/noir
*
1
Max. supply current 0.1 A
Courant max. fourni 0,1 A
Courant max. fourni 0,1 A
from car antenna (aerial)
à partir de l’antenne
à partir de l’antenne
du véhicule
*
3
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/AM 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 +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/AM 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/AM 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.
Schéma de raccordement
À un point métallique de la voiture
Branchez d’abord le câble de mise à la masse noir et,
ensuite, les câbles d’alimentation jaune et rouge.
Au câble de commande d’antenne électrique
ou au câble d’alimentation de l’amplificateur
d’antenne
Remarques
• Il n’est pas nécessaire de raccorder ce câble 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 « Remarques
sur les câbles de commande et d’alimentation ».
Au niveau de AMP REMOTE IN de
l’amplificateur de puissance en option
Ce raccordement s’applique uniquement aux amplificateurs.
Le branchement de tout autre système risque
d’endommager l’appareil.
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 alimentée en
permanence.
Raccordez d’abord le câble de mise à la masse noir à un
point métallique du véhicule.
• Si votre voiture est équipée d’une antenne FM/AM
intégrée dans la vitre arrière/latérale, voir « Remarques
sur les câbles de commande et d’alimentation ».
À la borne +12 V qui est alimentée en
permanence
Raccordez d’abord le câble de mise à la masse noir à un
point métallique du véhicule.
Remarques sur les câbles de commande et d’alimentation
• Le câble de commande d’antenne électrique (bleu) fournit une
alimentation de + 12 V CC lorsque vous mettez la radio sous
tension.
• Lorsque votre voiture est équipée d’une antenne FM/AM
intégrée dans la vitre arrière/latérale, raccordez le câble de
commande d’antenne (bleu) ou le câble d’alimentation des
accessoires (rouge) à la borne d’alimentation de l’amplificateur
d’antenne existant. Pour plus de détails, consultez votre
détaillant.
• Une antenne électrique sans boîtier de relais ne peut pas être
utilisée avec cet appareil.
Raccordement pour la conservation de la mémoire
Lorsque le câble d’alimentation jaune est raccordé, le circuit
de la mémoire est alimenté en permanence même si la clé de
contact est sur la position d’arrêt.
Remarques sur le raccordement des haut-parleurs
• Avant de raccorder les haut-parleurs, mettez l’appareil hors
tension.
• Utilisez des haut-parleurs ayant une impédance de 4 à 8 ohms
avec une capacité électrique adéquate pour éviter de les
endommager.
• Ne raccordez pas les bornes du système de haut-parleurs au
châssis de la voiture et ne raccordez pas les bornes du haut-
parleur droit à celles du haut-parleur gauche.
• Ne raccordez pas le câble de mise à la masse de cet appareil
à la borne négative (–) du haut-parleur.
• N’essayez pas de raccorder les haut-parleurs en parallèle.
• Raccordez uniquement des haut-parleurs passifs. Le
raccordement de haut-parleurs actifs (avec amplificateurs
intégrés) aux bornes des haut-parleurs peut endommager
l’appareil.
• Pour éviter tout problème de fonctionnement, n’utilisez pas les
câbles des haut-parleurs intégrés installés dans votre voiture si
l’appareil partage un câble négatif commun (–) pour les haut-
parleurs droit et gauche.
• Ne raccordez pas entre eux les cordons des haut-parleurs de
l’appareil.
Remarque sur le raccordement
Si les haut-parleurs ne sont pas raccordés correctement, le
message « FAILURE » s’affiche. Dans ce cas, assurez-vous que
les haut-parleurs sont bien raccordés.
Click on the first or last page to see other CDX-GT420U / CDX-GT424U / CDX-GT427UE / CDX-GT470U / CDX-GT470US service manuals if exist.