Sony CDX-GT49UM User manual

SERVICEMANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
CDX-GT49UM/GT490U/
GT490US/GT494U
FM/AMCOMPACTDISCPLAYER
9-889-625-02
2009K04-1
© 2009.11
E Model
CDX-GT490U/GT490US
Indian Model
CDX-GT49UM/GT494U
Ver. 1.1 2009.11
SPECIFICATIONS
Tuner section
FM
Tuning range:
Except Saudi Arabia model:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
Saudi Arabia model:
87.5 – 108.0 MHz
FM tuning interval:
Except Saudi Arabia model:
50 kHz/200 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
AM
Tuning range:
Except Saudi Arabia model:
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
Saudi Arabia model:
531 – 1,602 kHz
AM tuning interval:
Except Saudi Arabia model:
9 kHz/10 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Sensitivity: 26 PV
CD player section
Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and flutter: Below measurable limit
USB Player section
Interface: USB (Full-speed)
Maximum current: 500 mA
Power amplifier section
Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W u4 (at 4 ohms)
General
Outputs:
Audio outputs terminal
(front, sub/rear switchable)
Power antenna (aerial) relay control terminal
Power amplifier control terminal
Inputs:
Remote controller input terminal
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
USB signal input terminal
Model Name Using Similar Mechanism CDX-GT33U
CD Drive Mechanism Type MG-101Y-188//Q
Optical Pick-up Name DAX-25A
• The tuner and CD sections have no adjustments.
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 (earth))
Dimensions: Approx. 178 × 50 × 179 mm
(7
1/8× 2 × 7 1/8in.) (w/h/d)
Mounting dimensions:
Approx. 182 × 53 × 162 mm
(7
1/4× 2 1/8× 6 1/2in.) (w/h/d)
Mass: Approx. 1.2 kg (2 lb. 11 oz.)
Supplied accessories:
Card remote commander: RM-X151
Parts for installation and connections (1 set)
Design and specifications are subject to change
without notice.
Photo: CDX-GT490US

CDX-GT49UM/GT490U/GT490US/GT494U
2
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.
TEST DISCS
Please use the following test discs for the check on the CD
section.
YDES-18 (Part No. 3-702-101-01)
PATD-012 (Part No. 4-225-203-01)
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON 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 PUBLISHED BY SONY.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostat-
ic 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
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radia-
tion exposure.
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
semi-fixed resistor

CDX-GT49UM/GT490U/GT490US/GT494U
3
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.
This label is located on the bottom of the chassis.
1. SERVICE NOTE...................................................... 4
2. GENERAL
Connections .................................................................... 5
3. DISASSEMBLY
3-1. Sub Panel Assy ............................................................... 9
3-2. CD Mechanism Block..................................................... 9
3-3. Main Board..................................................................... 10
3-4. Servo Board .................................................................... 10
3-5. Chassis (T) Sub Assy...................................................... 11
3-6. Roller Arm Assy.............................................................. 11
3-7. Chassis (OP) Assy........................................................... 12
3-8. Chucking Arm Sub Assy................................................. 12
3-9. Sled Motor Assy.............................................................. 13
3-10. Optical Pick-up Section .................................................. 14
3-11. Optical Pick-up ............................................................... 14
4. DIAGRAMS
4-1. Block Diagram –Main Section– ..................................... 15
4-2. Block Diagram –Display Section– ................................. 16
4-3. Printed Wiring Board –Main Section–............................ 18
4-4. Schematic Diagram –Main Section (1/3)–...................... 19
4-5. Schematic Diagram –Main Section (2/3)–...................... 20
4-6. Schematic Diagram –Main Section (3/3)–...................... 21
4-7. Printed Wiring Boards –Key Section–............................ 22
4-8. Schematic Diagram –Key Section–................................ 23
5. EXPLODED VIEWS
5-1. Main Section................................................................... 29
5-2. Front Panel Section......................................................... 30
5-3. CD Mechanism Section (MG-101Y-188//Q).................. 31
6. ELECTRICAL PARTS LIST.................................. 32
TABLE OF CONTENTS

CDX-GT49UM/GT490U/GT490US/GT494U
4
SECTION 1
SERVICE NOTE
EXTENSION CABLE AND SERVICE POSITION
When repairing or servicing this set, connect the jig (extension
cable) as shown below.
• Connect the MAIN board (CN701) 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 (Part No.
A-1555-002-A) should be replaced since any parts in the SERVO
board cannot be repaired.
NOTE FOR REPLACEMENT OF THE USB CONNECTOR
(CN902)
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.
NOTE FOR THE 20-PIN CONNECTOR (CN901)
Do not use alcohol to clean the 20-pin connector (CN901) connect-
ing the front panel with the main body.
Do not touch the connector directly with your bare hand. Poor con-
tact may be caused.
SERVO BOARD
CN401
MAIN BOARD
CN701 J-2502-076-1
KEY board
USB (socket) connector
front panel

CDX-GT49UM/GT490U/GT490US/GT494U
5
SECTION 2
GENERAL
This section is extracted
from instruction manual.
CONNECTIONS
• E, Indian, Mexican model
Ver. 1.1
Connection diagram
1To a metal surface of the car
First connect the black ground (earth) lead, then connect the
yellow, and red power supply leads.
2 To the power antenna (aerial) control lead or power
supply lead of antenna (aerial) booster
Notes
tIt 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).
tWhen your car has a built-in FM/AM antenna (aerial) in the
rear/side glass, see“Notes on the control and power supply
leads.”
3
system may damage the unit.
4To the +12 V power terminal which is energized in
the accessory position of the ignition key switch
Notes
tIf 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
tWhen your car has a built-in FM/AM antenna (aerial) in the
rear/side glass, see“Notes on the control and power supply
leads.”
5To the +12 V power terminal which is energized at
all times
Be sure to connect the black ground (earth) lead to a metal
Notes on the control and power supply leads
tThe power antenna (aerial) control lead (blue) supplies +12 V DC
when you turn on the tuner.
tWhen 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.
tA 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
Notes on speaker connection
t
tUse speakers with an impedance of 4 to 8 ohms, and with
adequate power handling capacities to avoid its damage.
tDo not connect the speaker terminals to the car chassis, or connect
the terminals of the right speakers with those of the left speaker.
tDo not connect the ground (earth) lead of this unit to the negative
(–) terminal of the speaker.
tDo not attempt to connect the speakers in parallel.
tConnect only passive speakers. Connecting active speakers (with
tTo 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.
tDo not connect the unit’s speaker leads to each other.
Note on connection
appears in the display. In this case, make sure the speaker and
Diagrama de conexión
1
Conecte primero el cable de conexión a masa negro, y después
los cables amarillo y rojo de fuente de alimentación.
2Al cable de control de la antena motorizada o al
de señal de la antena
Notas
t
de antena, o se utiliza una antena telescópica accionada
manualmente, no será necesario conectar este cable.
tSi 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
opcional
cualquier otro sistema puede dañar la unidad.
4Al terminal de alimentación de +12 V que recibe
energía en la posición de accesorio del interruptor
de encendido
Notas
tSi 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
tSi 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”.
5Al terminal de alimentación de +12 V que recibe
energía sin interrupción
Asegúrese de conectar primero el cable de conexión a masa
Notas sobre los cables de control y de fuente de alimentación
tEl cable de control de la antena motorizada (azul) suministrará cc
de + 12 V cuando conecte la alimentación del sintonizador.
tSi 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 fuente de alimentación auxiliar
existente. Para obtener más información, consulte a su distribuidor.
tCon esta unidad no es posible utilizar una antena motorizada sin
caja de relé.
Conexión para protección de la memoria
Si conecta el cable de fuente de alimentación amarillo, el circuito
de la memoria recibirá siempre alimentación, aunque apague el
interruptor de encendido.
Notas sobre la conexión de los altavoces
tAntes de conectar los altavoces, desconecte la alimentación de la
unidad.
tUtilice altavoces con una impedancia de 4 a 8 :con la capacidad
de potencia adecuada para evitar que se dañen.
tNo conecte los terminales de altavoz al chasis del automóvil, ni
conecte los terminales del altavoz derecho con los del izquierdo.
tNo conecte el cable de conexión a masa de esta unidad al terminal
negativo (–) del altavoz.
tNo intente conectar los altavoces en paralelo.
tConecte solamente altavoces pasivos. Si conecta altavoces activos
puede dañar la unidad.
tPara evitar fallas de funcionamiento, no utilice los cables de altavoz
incorporados instalados en el automóvil si la unidad comparte un
cable negativo común (–) para los altavoces derecho e izquierdo.
tNo conecte los cables de altavoz de la unidad entre sí.
Nota sobre la conexión
aparecerá “FAILURE” en la pantalla. Si es así, compruebe la conexión
de ambos dispositivos.
2
4
5
1
3
L
R
REAR/SUB
AUDIO OUT
FRONT
REMOTE
IN*3
REAR/SUB
AUDIO OUT*2
FRONT
AUDIO OUT

AMP REM
Max. supply current 0.3 A
Corriente máx. de alimentación de 0,3 A
Fuse (10 A)
Fusible (10 A)
Blue/white striped
Con rayas azules y blancas
Red
Rojo
Yellow
Amarillo
White
Blanco
Green
Verde
Purple
Morado
White/black striped
Con rayas blancas y negras
Gray/black striped
Con rayas grises y negras
Green/black striped
Con rayas verdes y negras
Gray
Gris
Left
Izquierdo
Right
Derecho
ANT REM
Black
Negro
Blue
Azul
Max. supply current 0.1 A
Corriente máx. de alimentación de 0,1 A
Purple/black striped
Con rayas moradas y negras
*1
from car antenna (aerial)
desde la antena del automóvil
Left
Izquierdo
Right
Derecho
*1
*1Cable con terminales RCA (no
suministrado)
*2 AUDIO OUT (salida de audio) puede
cambiarse a SUB o REAR. Para obtener
información, consulte el manual de
instrucciones suministrado.
*3Puede requerirse un adaptador
independiente.
*1 RCA pin cord (not supplied)
*2AUDIO OUT can be switched SUB or REAR.
For details, see the supplied Operating
Instructions.
*3Separate adaptor may be required.

CDX-GT49UM/GT490U/GT490US/GT494U
6
• Argentina model
Connection diagram
A
system may damage the unit.
Warning
If you have a power antenna (aerial) without a relay
box, connecting this unit with the supplied power
connecting lead 2may damage the antenna (aerial).
Notes on the control and power supply leads
tThe power antenna (aerial) control lead (blue) supplies +12 V DC
when you turn on the tuner.
tWhen 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.
tA 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
Notes on speaker connection
t
tUse speakers with an impedance of 4 to 8 ohms, and with
adequate power handling capacities to avoid its damage.
tDo not connect the speaker terminals to the car chassis, or connect
the terminals of the right speakers with those of the left speaker.
tDo not connect the ground (earth) lead of this unit to the negative
(–) terminal of the speaker.
tDo not attempt to connect the speakers in parallel.
tConnect only passive speakers. Connecting active speakers (with
tTo 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.
tDo not connect the unit’s speaker leads to each other.
Note on connection
appears in the display. In this case, make sure the speaker and
Diagrama de conexión
A
opcional
cualquier otro sistema puede dañar la unidad.
Advertencia
Si la antena motorizada no dispone de caja de relé,
es posible que la conexión de esta unidad mediante
el cable de alimentación suministrado 2provoque
daños en la antena.
Notas sobre los cables de control y de fuente de alimentación
tEl cable de control de la antena motorizada (azul) suministrará cc
de + 12 V cuando conecte la alimentación del sintonizador.
tSi 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 fuente de alimentación auxiliar
existente. Para obtener más información, consulte a su distribuidor.
tCon esta unidad no es posible utilizar una antena motorizada sin
caja de relé.
Conexión para protección de la memoria
Si conecta el cable de fuente de alimentación amarillo, el circuito
de la memoria recibirá siempre alimentación, aunque apague el
interruptor de encendido.
Notas sobre la conexión de los altavoces
tAntes de conectar los altavoces, desconecte la alimentación de la
unidad.
tUtilice altavoces con una impedancia de 4 a 8 :con la capacidad
de potencia adecuada para evitar que se dañen.
tNo conecte los terminales de altavoz al chasis del automóvil, ni
conecte los terminales del altavoz derecho con los del izquierdo.
tNo conecte el cable de conexión a masa de esta unidad al terminal
negativo (–) del altavoz.
tNo intente conectar los altavoces en paralelo.
tConecte solamente altavoces pasivos. Si conecta altavoces activos
puede dañar la unidad.
tPara evitar fallas de funcionamiento, no utilice los cables de altavoz
incorporados instalados en el automóvil si la unidad comparte un
cable negativo común (–) para los altavoces derecho e izquierdo.
tNo conecte los cables de altavoz de la unidad entre sí.
Nota sobre la conexión
aparecerá “FAILURE” en la pantalla. Si es así, compruebe la conexión
de ambos dispositivos.
L
R
REAR/SUB FRONT
AUD IO OUT
A
REMOTE
IN*4
13 57
24 68
57
48
FRONT
AUDIO OUT
REAR/SUB
AUDIO OUT *3
2
AMP REM
Max. supply current 0.3 A
Corriente máx. de alimentación de 0,3 A
Fuse (10 A)
Fusible (10 A)
Blue/white striped
Con rayas azules y blancas
*2
*1 from car antenna (aerial)
desde la antena del automóvil
*1Nota sobre la conexión de la antena
Si la antena del automóvil es del tipo ISO (International
Organization for Standardization), emplee el adaptador
suministrado 8 para conectarla. En primer lugar, conecte la
antena del automóvil al adaptador suministrado y, a continuación,
a la toma de antena de la unidad principal.
*2Cable con terminales RCA (no suministrado)
*3 AUDIO OUT (salida de audio) puede cambiarse a SUB o REAR.
Para obtener información, consulte el manual de instrucciones
suministrado.
*4Puede requerirse un adaptador independiente.
*1Note for the antenna (aerial) connecting
If your car antenna (aerial) is an ISO (International Organisation
for Standardisation) type, use the supplied adaptor 8to connect
it. First connect the car antenna (aerial) to the supplied adaptor,
then connect it to the antenna (aerial) jack of the master unit.
*2 RCA pin cord (not supplied)
*3AUDIO OUT can be switched SUB or REAR. For details, see the
supplied Operating Instructions.
*4Separate adaptor may be required.
See “Power connection diagram”on the reverse side
for details.
Para obtener más información, consulte el“Diagrama
de conexión de la alimentación” que encontrará al
dorso.
from the car’s power connector
desde un conector de alimentación
auxiliar del automóvil
from the car’s speaker connector
desde un conector de altavoces del
automóvil
Negative polarity positions 2, 4, 6, and 8 have striped leads.
Los cables de las posiciones de polaridad negativa 2, 4, 6 y 8 son
rayados.
Positions 1, 2, 3 and 6 do not have pins.
Las posiciones 1, 2, 3 y 6 no tienen pines.
4Yellow
Amarillo
continuous power supply
fuente de alimentación continua
5Blue
Azul
power antenna (aerial) control
control de la antena motorizada
7Red
Rojo
switched power supply
fuente de alimentación conmutada
1Purple
Morado
+Speaker, Rear, Right
Altavoz, posterior, derecho
2–
Speaker, Rear, Right
Altavoz, posterior, derecho
3Gray
Gris
+Speaker, Front, Right
Altavoz, frontal, derecho
4–
Speaker, Front, Right
Altavoz, frontal, derecho
5White
Blanco
+Speaker, Front, Left
Altavoz, frontal, izquierdo
6–
Speaker, Front, Left
Altavoz, frontal, izquierdo
8
*2

CDX-GT49UM/GT490U/GT490US/GT494U
7
• Saudi Arabia model
Connection diagram
1To a metal surface of the car
First connect the black ground (earth) lead, then
connect the yellow, and red power supply leads.
2To the power antenna (aerial) control lead
or power supply lead of antenna (aerial)
booster
Notes
tIt 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).
tWhen your car has a built-in FM/AM antenna (aerial)
in the rear/side glass, see “Notes on the control
and power supply leads.”
3To AMP REMOTE IN of an optional power
other system may damage the unit.
4To the +12 V power terminal which is
energized in the accessory position of the
ignition key switch
Notes
tIf 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
tWhen your car has a built-in FM/AM antenna (aerial)
in the rear/side glass, see “Notes on the control
and power supply leads.”
5To the +12 V power terminal which is
energized at all times
Be sure to connect the black ground (earth) lead to a
Notes on the control and power supply leads
tThe power antenna (aerial) control lead (blue) supplies
+12 V DC when you turn on the tuner.
tWhen 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.
tA 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 o.
Notes on speaker connection
tBefore connecting the speakers, turn the unit o.
tUse speakers with an impedance of 4 to 8 ohms, and with
adequate power handling capacities to avoid its damage.
tDo not connect the speaker terminals to the car
chassis, or connect the terminals of the right speakers
with those of the left speaker.
tDo not connect the ground (earth) lead of this unit to
the negative (–) terminal of the speaker.
tDo not attempt to connect the speakers in parallel.
tConnect only passive speakers. Connecting active
terminals may damage the unit.
tTo 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.
tDo not connect the unit’s speaker leads to each other.
Note on connection
“FAILURE” appears in the display. In this case, make

CDX-GT49UM/GT490U/GT490US/GT494U
8
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. SUB PANEL ASSY
(Page 9)
3-2. CD MECHANISM BLOCK
(Page 9)
SET
3-3. MAIN BOARD
(Page 10)
3-5. CHASSIS (T) SUB ASSY
(Page 11)
3-6. ROLLER ARM ASSY
(Page 11)
3-7. CHASSIS (OP) ASSY
(Page 12)
3-8. CHUCKING ARM SUB ASSY
(Page 12)
3-9. SLED MOTOR ASSY
(Page 13)
3-10. OPTICAL PICK-UP SECTION
(Page 14)
3-11. OPTICAL PICK-UP
(Page 14)
3-4. SERVO BOARD
(Page 10)

CDX-GT49UM/GT490U/GT490US/GT494U
9
Note: Follow the disassembly procedure in the numerical order shown below.
3-1. SUB PANEL ASSY
3-2. CD MECHANISM BLOCK
2 two claws
3two claws
4sub panel assy
1two screws
(+PTT 2.6 u6)
4 CN701
3
1 screw
(+PTT 2.6
u 6)
2 screw
(+PTT 2.6 u 6)
6 two screws
(+PTT 2.6 u 4)
7 bracket (CD)
8 CD mechanism block
5 CN501 (3P)

CDX-GT49UM/GT490U/GT490US/GT494U
10
3-3. MAIN BOARD
3-4. SERVO BOARD
9 MAIN board
insulating sheet
3
2 two screws
(+PTT 2.6 u 8)
1 three screws
(+BTT 2.6
u 5)
7 screw
(+PTT 2.6
u 10)
8 heat sink
4 two
screws
(+P 2.6
u 8)
6 screw
(+P 2.6
u 8)
5 two screws
(+PTT 2.6
u 10)
7 SERVO board
SERVO board
3 toothed lock screw
(M 1.7 u2.5)
2 toothed lock screw
(M 1.7 u2.5)
1 Remove the eleven solders.
6 optical pick-up (16 core)
(CN101)
4 claw
5 claw
gray
yellow
blue
orange
red
black
red
white
black
red
white

CDX-GT49UM/GT490U/GT490US/GT494U
11
3-5. CHASSIS (T) SUB ASSY
3-6. ROLLER ARM ASSY
4 chassis (T) sub assy
3 claw
1 two screws
(M 1.7 u2.5)
2 two screws
(M 1.7 u2.5)
3 washer
4 gear (RA1)
6 roller arm assy
5
1 spring (RAL)
2 spring (RAR)

CDX-GT49UM/GT490U/GT490US/GT494U
12
3-7. CHASSIS (OP) ASSY
3-8. CHUCKING ARM SUB ASSY
7 two coil springs (damper) (natural)
8 coil spring (damper) (green)
6chassis (OP) assy
5
1 tension spring (KF)
2 gear (LE1)
3 lever (D)
4 slider (R)
3 chucking arm sub assy
2
1 spring
Note: Have this portion receive the chassis. Note: Have this portion receive the chassis.
Note: Be careful not to touch the turn table.

CDX-GT49UM/GT490U/GT490US/GT494U
13
3-9. SLED MOTOR ASSY
3 sled motor assy
sled motor assy
1 spring
spring
stand
stand
turn table
2 three serration screws
(M 2 u3)
three serration screws
(M 2 u3)
Note: Place the stand with care not to touch the turn table.
Note:
Never remove these parts since they were adjusted.
bearing (R)
bearing (F)
Note for Assembly
Note: Take care to prevent the chassis from being bent
when tightening the three machine screws.

CDX-GT49UM/GT490U/GT490US/GT494U
14
3-10. OPTICAL PICK-UP SECTION
3-11. OPTICAL PICK-UP
1
2 optical pick-up section
Note: Be careful not to touch the lens and hologram
terminal when removing the optical pick-up section.
1 tapping screw
(P 1.4)
2 leaf spring (OPS)
3 rack
5 optical pick-up 4 lead screw assy

CDX-GT49UM/GT490U/GT490US/GT494U
CDX-GT49UM/GT490U/GT490US/GT494U
1515
4-1. BLOCK DIAGRAM – MAIN Section –
SECTION 4
DIAGRAMS
20 22 11 12 28
8
17 18
3
25
7
19 27 13 24
4
AU_LCH AU_RCH TXD(MC_BUS) RXD(MC_BUS) WAKE_UP Z-MUTE CD_ON CDM_ON SYS_RST EJECT_OK VBUS_ON A_ATT BU_CHECK AUDIO_8.5V A_3.3V BU_3.3V DR_6V
R-CH R-CH
R-CH
R-CH
R-CH
AUDIO +8.5V BU_+3.3V SERVO+3.3V
R-CH 7AUX_LCH
9AUX_RCH
BU+3.3V
MC_RX
59 MC_TX 60 WAKE_UP 58 Z_MUTE 62 CD_ON 27 CDM_ON 28
RESET
54 SYSRST 26 VBUS_ON
BU +3.3V
70 CLK_IN 61 MD2 51 MD0 53 FLASH_EN1 78
VOUT
1VIN 2
15
D701
4FMIN1 3FMIN2 3TU_LCH
8AUX_GND
ELECTRONIC VOLUME
IC302
J1
(ANTENNA)
PHASE LOCKED LOOP
(PLL)
IC001
L6
FM MIX
L2
CN701
CD
MECHANISM
UNIT
(MG-101Y)
(1/2)
I2C BUS CONTROLLED
POWER AMP/MULTIPLE
VOLTAGE REGULATOR
IC301
SYSTEM CONTROL
IC401 (1/2)
RESET
IC403
CN802
4TU_RCH 5CD_LCH 6CD_RCH
R-CH (FRONT) R-CH (REAR)
BATT
R-CH
8 9
18
SCL 19
SDA
14
RSSI 37 VSM
16 XTAL1 15 XTAL2
LOUT
ROUT
J901
AUX
X1
4MHz
S401
RESET
5 3
OUT-FL+
OUT-FL–
9 7
OUT-RL+
OUT-RL–
27
R-CH
ANT-REM
35
VP BATT
20
VP1 6
VP2
30
AUDIO+B 31
33
SERVO+3.3V
MECHA+6V 34
PANEL+B
34 32
OUT_FRCH
27
SA_CLK 28
SA_DA 29
SA_OUT
OUT_RRCH
R-CH
31
R/S_OUT_LCH
13
ZAPPIN1 16 ZAPPIN2
4SCL
AUDIO +8.5V SERVO+3.3V MECHA+6V PANEL+B
2SDA
16 BEEP 22 STB 25 DIAG
7
10 12 11 16
1 9 2 4 3 6
37 38
SCL
SDA
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
I2C_SCK I2C_SIO
I2C_SCK
I2C_SIO
23
I2C_SCK 72
SA_CLK 71
SA_OUT 38
SA_IN
22
I2C_SIO
31
ATT
47
EXATT_XEN
98
ZAPPIN
97
BEEP 68
AMP_STB 69
DIAG
83
BU_CHECK
12 IN-FL
FL+ FL–
L
R
RL+ RL– FR+ FR– RR+ RR– ANT-REM BATT ACC
35
OUT_FLCH
11 IN-RL
33
OUT_RLCH
MUTE
Q102
MUTE DRIVE
Q303,304
29
ACC_IN ACC DETECT
Q805
+3.3V REG
IC402
MUTE
Q103
29
AMP-REM 5AMP-REM
1AMRFIN
REAR/SUB
D306
D308
D309
FU601
37
BU+B B.U+5V
FRONT
R-CH
L
J302
R
-1 -2 -3 -4
AUDIO
OUT
MUTE
Q104
BU+3.3V
BATT
54
BACK-UP CHECK
Q802,807,808,
D806,807
MECHA +6V
3.3V
6
UART_CLK
3
FLASH_W
7
CLK_IN
2
RESET Ucom-TX(CD-RX)
4 1 5Ucom-RX(CD-TX)
CN401
FLASH
PROGRAMMING
BU +3.3V
B.U +5V
R-CH (REAR/SUB)
30
R/S_OUT_RCH
CD MUTE
Q305
FLASH
PROGRAMMING
BUFFER
Q401,402,701

S
LJQDO
P
DWK

R-CH
LV
om
LWWHG
GXH
W
o
VD
m
H
DV
L-CH.
: AM
: CD : FM : AUX

CDX-GT49UM/GT490U/GT490US/GT494U CDX-GT49UM/GT490U/GT490US/GT494U
1616

4-2. BLOCK DIAGRAM – DISPLAYSection –
X402
32.768kHz
14 13 39
49 50 48
40
SYSTEMCONTROL
IC401(2/2) LCDDRIVER,LEDCONTROL
IC901
KEY_IN1
CLK LCD CE
LCD_SO
LCD_SCK
LCD_CE
KEY_IN0
46 KEY_ACK1 11 RE_IN0
RE0 RE1 12 RE_IN1
EXCEPTEA MODEL
X_OUT X_IN
X401
7.92MHz
92 93 OSC_IN
7NOSE_SW
OSC_OUT
63 64 62
DIMMER 2
BLINK 4
COM4
I
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
5
|
50

55

60
51
|
54
SEG48
I
SEG1
DATA PANEL+B
KEYMATRIX
LSW905–913,
S901–907
(VOLUME)
PUSHENTER/SELECT
RE901
ROTARY
ENCODER
95 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
IC902
Q907
LED
DRIVER
Q901
LCDBACK LIGHT
DIMMER
CONTROL
LED903,905,907,909,910,912,
914,916,919,921,932,934,
LSW905-913
LED924,925,928,928
(RINGILLUMINATION)
LED901
(LCDBACKLIGHT)
3
USBPOWER
CONTROLSWITCH
IC503
99
SYNC_OUT
24
USB_OVER
21
USB_ON
BATT
100
DD_ON
VIN VBUS
13
VOUT
D505
L502
DC/DCCONVERTER
CONTROL
IC502
CD
MECHANISM
UNIT
(MG-101Y)
(2/2)
USBD+
USBD–
3CLR 2B5
Q
DC/DCCONVERTER
IC501
6
DRV
1RC
2
CONT
USBPOWER
SWITCH
Q502
USBPOWER
CONTROL
Q501
SWITCHING
REGULATOR
Q503
D510
USBOVER
CURRENTDETECT
Q504,505
1 3 2
VBUS
D+
D–
4
CN902
(USB)
D502
34 RC_IN1 45 KEY_ACK0 41 RC_IN0
J801
(REMOTEIN)
55
AREA_SEL2 BU+3.3V
S402
FREQUENCY
SELECT
FM(200K)
AM(10K)
FM(50K)
AM(9K)
SLJQDO PDWK AEEUHYLDWLRQ EA SDXGL AUDELD PRGHO
:USB

CDX-GT49UM/GT490U/GT490US/GT494U
CDX-GT49UM/GT490U/GT490US/GT494U
1717
For Schematic Diagrams: Note: • All capacitors are in PF unless otherwise noted. (p: pF) 50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in :and 1/4W or less unless otherwise
specified.
• f: internal component.
• C: panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM < > : CD PLAY
*: Impossible to measure •Voltages are taken with a VOM (Input impedance 10 M:).
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. J: CD F: FM
f: AM L: AUX c: USB
• Abbreviation AR : Argentina model EA : Saudi Arabia model MX : Mexican model
For Printed Wiring Boards: Note: • X: Parts extracted from the component side.
• Y: parts extracted from the conductor side.
• a: Through hole. • : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Waveforms – MAIN Board –
Caution: Pattern face side: (SIDE B) Parts face side: (SIDE A)
Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
Note:
The components identified by mark 0or dotted line with mark 0are critical for safety.
Replace only with part number specified.
• Abbreviation AR : Argentina model EA : Saudi Arabia model MX : Mexican model
1.8 Vp-p
32.768 kHz
3.2 Vp-p
7.92 MHz
1V/DIV, 20 sec/DIV 2V/DIV,50 nsec/DIV
1IC401 qd (X_OUT) 2IC401 os (OSC_OUT)
0.05 Vp-p
4 MHz
0.05V/DIV,50 nsec/DIV
3IC001 qh (XTAL1)
Ver. 1.1

CDX-GT49UM/GT490U/GT490US/GT494U CDX-GT49UM/GT490U/GT490US/GT494U
1818

4-3. PRINTED WIRING BOARD – MAIN Section – • : Uses unleaded solder.
(Page22)
Ver. 1.1
1
A B C D
E
F
G
H
J
I
2345678910
11 12 13
1-880-411- (12)
12
9 1
16
8
-1-2
AM(9K)
FM(50K)
FM(200K)
AM(10K)
S402
FREQUENCY
SELECT
S402
GT490U/GT490US:E,EA,MXMODEL/GT494U
GT490US:ARMODEL
J302
S401
FLASH
PROGRAMMING
RESET
-2 R
-1 L
-4 R
-3 LJ801
(REMOTE IN)
CDMECHANISM
UNIT
(MG-101Y)
(2/2)
CDMECHANISM
UNIT
(MG-101Y)
(1/2)
REAR/SUB
AUDIOOUT
FRONT
BC E
BC E
81
15
114
28
137
236
G
SDD
DD
1
100 30 31
8180 50
51
116
17 32
21
20
40
1
1
14
41
58
85
5
G
SDD DD
C20
C21
R401
C22
R402
C23
JC130
C24
R404
JC131
C25
R405
JC132
C26
R406
R212
JC133
C27
R407
R213
C28
R408
R409
R216
R217
R600
R410
R411
R414 R416 R418
R801
R419
R802
BC E
EC B E CB
CN401
CN403
R420
R421
R422
R423
R424
R426
R427
R428
R815
R816
R817
R818
R430
R819
C201
R431 R432
C203
R433
R434
C204
C205
R435
R436
C206
CN802
FU601
R437
C207
R438
C208
C209
EXCEPT EAMODEL
R823
R825
C401
R826
C402
R827
C403
C404
C210
R440R439
R829
JL001
C405
C211
R441
JL002
C212
C406
R442
JL003
C213
C407
R443
JL004
C214
R444
JL005
C409
C215
R445
JL006
C216
R446
JL007
R447
R830
JL008
R448
EAMODEL
JL009
R832
C411
X401
X402
C413
JL010
R450
JL011 JL012
R452
C416
JL013
C417
JL014
R454
C418
JL015
R455
C419
JL016
R456
JL017
C803
JL018
C804
R459
JL019
C805
C806
C807
C420
C808
C421 C422
C423
R460
JL020
C424
R461
JL021
C425
S401
R462
JL022
C426
R463
JL023
C427
R464
JL024
C428
C810
R465
JL025
C811
C429
R466
C812
JL026
R467
C813
JL027
R468
JL028
C815
JL029
F501
C433
C434
JL030
C435
JL031
C436
JL032
JL033
JL034
JL035
JL036
JL037
JL038
C1
JL039
C5
C6
C8
JL040
C9
JL041
JL042
JW201 JW202
JW203
JW204
JW205
JW206
Q102
BC E
BC E
EC B
BC E
EC B
JW207
Q103
JW208
Q104
JW209
D201
JW210
D204
JW211
D205
JW212
JW213
Q303
JW214
Q304
JW215
Q305
JW216
JW217
JW218
JW219
D401
D403 D404
Q501
Q502
Q503
JW220
Q504
BC E
JW221
Q505
JW222
JW224
JW225
L301
JW226
JW227
JW228
D410 JW229
D411
Q701
BC E
JW230
JW231
L501
JW232
L502
JW233
L503
JW234
JW235
JW236
D806
JW237
D807
JW238
JW239
D809
JW240
D810
JW241
D811
JW242
D812
JW243
JW244
JW245
JW246
JW247
JW248
JW249
JW250
JW251
JW252
JW253
JW254
JW255
FB101
JW256
JW257
JW258
JW259
JW260
JW261
FB301
JW262
JW263
JW264
JW265
R101
JW266
EC B
JW267
R103
JW268
R104
JW269
R106
R107
JW270
JW271
JW272
R302
JW273
R303
R304
JW274
JW275
JW276
R306
R112
JW277
R113
JW278
R308
JW279
FB701
R309
FB702
R116
R117
FB705
R501
R502
FB707
R503
JW280
R504
JW281
R311
R505
JW282
JW283
R313
JW284
R508
L1
JW285
L2
JW286
JW287
JW288
JW289
R701
L6
L7
R703
L8
R704
R510
R511
R706
R512
R707
R513
JW290
R514
JW291
R709
R515
JW292
R516
JW293
R517
JW294
R518
JW295
R519
JW296
JW297
JW298
R710
JW299
CN501
R712
R713
R714
R520
R521
R717
R523
R524
R525
C101
R526 R527
C103
C104
C105
CN701
C106
C107
C108
C109
C301
C302
C303
C304
C110
C305
C111
C112
C306
C113
C307
C308
C114
C309
C115
C116
(ANTENNA)
C501
C502
C503
C504
C311
C505
C312
C506
C313
C507
R10
C314
C508
R11
C315
C509
R12
C316
R13
C317
R14
C318
R15
C701
C319
R16
C702
C703
C704
C705
C706
C707
C513
C514
C515
C322
31
45
C516
BC E
EC B
C323
C517
C518
C519
BC E B CE
EC B
EC B
A001
C520
C521
C523
C524
CAM001
R1
R2
R3
R4 R5
R6
VR1
JW102
JW300
JW301
D101
13
JW302
JW303
JW304
D104
JW305
D105
JW306
Q202
JW307
Q203
JW308
Q204
JW309
D301
D302
D303
JW310
D304
JW311
Q401
D305
JW312
Q402
D306
JW313
JW314
D308
JW315
D309
JW316
JW317
JW318
JW319
JW126
D502
D503
D504
D505
CAM003
JW321
JW322
JW323
JW324
D701
JW327
JW328
D510
JW329
D511
D512
Q802
JW137
JW138
Q805
Q807
JW330
Q808
JW147 JW148
L801
CAM002
JC101
X1
JC102
JC103
JC104
JC105
JC106
JC107
JC108
JC109
JC110 JC111
FB201
JC112
JC113
JC114
JC115
JC116
JC117
JC118
JC119
C12
C13
JC120
JC121
R201
JC122
C16
JC123
C17
R203
JC124
C18
R204
JC125
C19
JC126
R206
JC127
R207
JC128
JC129
J1
2
1
20
19
12
43
KEY BOARD CN901
A
IC001
IC401
IC402
IC403
IC302
IC501
IC502
IC503
IC301

CDX-GT49UM/GT490U/GT490US/GT494U
CDX-GT49UM/GT490U/GT490US/GT494U
1919
4-4. SCHEMATIC DIAGRAM – MAIN Section (1/3) – • See page 24 for IC Block Diagrams.
(Page20)
(Page21)
Ver. 1.1
C
8156
G
7
H
131110 12
E B
514
I
2
F
9
J A
14
D
3
BOARD
(3/3)
MAIN
2
1
MAINBOARD
(2/3)
ICB/D
ICB/D
GT490US:ARMODEL
14.4
6.4 0
0
2.7
6.4
0.6
0
3.1
7.1
3.1
7.1
14.4
7.1
7.1
8.2
7.6
7.6
7.6
7.6
8
7.1
7.1
14.4
7.1
3.3
7.1
3.3
13.7
13.7
8.6
0<3.3>
6.2
10.6
14.4
14
5.1
3.3 0
3.3
13.9 0
13.6
0
3.3 3.3
3.3
5.1
1.3
4.8
GT490U/GT490US:E,EA,MXMODEL/GT494U
IC301
IC403 IC402
MAINBOARD (1/3)
MAZ8180GMLS0
D807 1k
R816
1 2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19
CN802
16P
FL+
RL+
RR+
FR+
AMP-REM
ANT-REM
ACC
GND
FL-
RL-
RR-
FR-
TEL-ATT
ILL
TEST
+B +B +B +B
C311
0.01
L801
0.22
C811
1C115
1C215
0.22
C305
1C210
0.22C405
0.22
C810
1C114
1C214
0.22
C304
0.01
C308
1C109 1C110
1C209
100k
R401
0.01C407
2.2uHL301
4.7kR823
RT1P141C-TP-1
Q304
RT1N141C-TP-1
Q303
S401
47k
R306 47p
C314 150
R308
10V
C409
1000
RT1P141C-TP-1
Q305
CDMUTE 16V
47
C322
25V22
C303
C116
100p
C111
100p
C216
100p
C211
100p
2.2
C315
R830
0
16V
47
C433
1
C306
16V
47
C307
0R825
10V330C411
16V
10
C312
16V
10
C313
16V
10
C309
6.3V
330
C403
MA2J1110GLS0
D308
MA2J1110GLS0
D309
MA2J1110GLS0
D306
54
321
TK11133CSCL-G
IC402
+3.3VREG
CONT
GND
NOISE VOUT
VIN
10k
R832
C815
1000p
0.22C404
0.1
C402
4
32
1
PST8228UL
IC403
RESET
0.01
C401
J801
0.01C406
22
R313
1A4-A2
D104 1A4-A2
D105 1A4-A2
D204
1A4-A2
D205
1A4-A2
D302
1A4-A2
D303
1A4-A2
D304
1A4-A2
D305
2SC3052EF-T1-LEF
Q808
RT1N141C-TP-1
Q802
RT1N141C-TP-1
Q807
R826
0
R827
220k
R801
0
D806
MAZ8075GMLS0 R815
1k
R802
0
IC301
TDA8588AJ/N2/R1
1
TAB
2
SDA
3
OUT-FL-
4
SCL
5
OUT-FL+
6
VP2
7
OUT-RL-
8
P-GND1
9
OUT-RL+
10
SVR
11
IN-RL
12
IN-FL
13
S-GND
14
IN-FR
15
IN-RR
16
BEEP
17
OUT-RR+
18
P-GND3
19
OUT-RR-
20
VP1
21
OUT-FR+
22
STB
23
OUT-FR-
24
P-GND4
25
DIAG
26
RST
27
ANT-REM
28
CRES
29
AMP-REM
30
AUDIO+B
31
SERVO+3.3V
32
GND
33
MECHA+6V
34
PANEL+B
35
VP
36
CBU
37
BU+B
0.22
C808
1000pC806
47k
R819
MAZ8180GMLS0
D809
MAZ8180GMLS0
D811
1N5404-C311-3
D812
0.47
C803
47k
R817
2SC3052EF-T1-LEF
Q805
ACCDETECT
4.7k
R818
1000pC805
16V
3300
C807
C804
0.47
MAZ8180GMLS0
D810
1
2
3
4
5
7
8
9
10
11
12
13
14
15
16
17
18
6
BUS1
25 26 27 28 29 30 31 32 33 BUS2
220
JC112
220
JC111
I2C_SIO
I2C_SCK
ATT
ACC
RC1
RC0
9
4
6
ANTREM
REAR
12
RR-
FR-
4
ACC
REAR
RL+
15 10
L-CH
13
RL+
4
3
FR–
12
ACC
RR+
16
R-CH
9
14
+
6
15
BATT
AMPREM
ANTREM
13
4
RL–
1
FRONT
10
–
ACC
GND
RR– GND
7 8
11
+
BATT
8
AMPREM
1
5
7
GND
6
8
+
6
ANTREM
1
BATT
FR+
2
8
FR+
L-CH
FRONT
RL-
FL–
3
2
FL+
2
–
3
2
11
R-CH
5 7
5
5
14
+
–
RR+
16
FL+
–
FL-
7
1
3
FU601
10A
Q802,807,808
BACK-UPCHECK
(REMOTEIN)
I2CBUSCONTROLLED
POWERAMP/MULTIPLE
VOLTAGE REGULATOR
Q303,304
MUTEDRIVE
NC VSS VIN
VOUT
RESET

CDX-GT49UM/GT490U/GT490US/GT494U CDX-GT49UM/GT490U/GT490US/GT494U
2020

A J C
143 9
K F
813610
H
157
D
11
E B
12 165
G
I
412
1
MAINBOARD
(1/3)
MAIN
BOARD
3(3/3)
1
2
BOARD
MAIN
4(3/3)
ICB/D
ICB/D
ICB/D
3.2 0
14.4 14.4
714.4
0
3.3
14.4 3.3
12.8 3.3
14.4
14.4
12.8
0.5
3.8
1.2
0.7
0
1.3 3.3
3.3 2.6 0.9
5.6
3.3
5.1
1.3
00
3
0.1
0
3
0
3.3
3.3
3.3
0
0
3.3
3.3
3.3
3.3
0
0
3.3
3.2
3.3
0
0
0
3.3
3
3
0
3.2 3.1 0.2 3.3 3.3 3.3 3.3 3.3 3.3 0 0.5 3 3.3 0 3.3
0
3
3
3
0
3.3
3.3
1.1
1.5
3.3
1.9
0
3.3
3.1
3.1
3
0
3.3
0
3.2
0
0
2.7
0
3.3 1.9 1.2
3 0 0
1.6 3.3
EA MODEL
EA MODEL EXCEPT
16V
MAINBOARD (2/3)
IC401
IC503
IC501
IC502
0.1
C517
120
C502
8 7 6 54
3 2 1
TC7WH123FU(TE12R)
IC502
DC/DC CONVERTER CONTROL
A B CLR GND Q
CX
RX/CX
VCC
8765
4321
TPS40200DRG4
IC501
RC
SS
COMP
FB GND
DRV
ISNS
VCC
0.5%
100k
R516
RT1N141C-TP-1
Q501
USB POWER CONTROL
MA24D5000BS0
D504
15p
C509
1k
R519
1.5k
R511
1
C503 100k
R510
0.1
C504
330k
R514
0.1C501
1k
R505
470p
C505
MAZ8120GMLS0
D503
68k
R504
470p
C506
1
C507
10kR513
56kR502
1500p
C508
470p
C515
56k
R501
0.5%
22k
R517
R717 0
100kR710
16V
22
C702
0.01
C707
100R707
0.01
C705
1 2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 2828P
CN701
NCO NCO
SYS_RST
BU_3.3V
BU_GND
NCO
VBUS_ON
Z-MUTE
Z/Y_CHECK
D_GND
TXD(MC_BUS)
RXD(MC_BUS)
AUDIO_8.5V
USB_GND
DR_6V
DR_GND
CD_ON
CDM_ON
A_ATT
AU_LCH
AU_GND
AU_RCH
A_GND
A_3.3V
EJECT_OK
OPEN_REQ
BU_CHECK
WAKE_UP
100R709
2A
F501
100kR419
10kR421
10kR424
0.01C417
0.01C418
32.768kHz
X402
R426 2.2k
2.2kR427
100kR432 100kR433
100
R435
0.5%10kR441 0.5%10kR440 0.5%10kR439
100k
R434
100R438 100R437
1000p
C425
1000p
C426
1000p
C427
1000p
C428
100kR448 100kR447
100k
R446
100R455
10kR456
220k
R405
1000p
C413
100kR408
2.2kR407
100kR406
10uH
L503
1k
R523 1k
R524 1k
R525
100kR703
100kR713
0
R508
1 2 3 4 5 6 7 8
8P
CN401
RESET CLK_IN UART_CLK Ucom-TX(CD-RX) Ucom-RX(CD-TX) 3.3V FLASH_W GND
100kR428 100kR431
100R409
100
R420 100
R422
100R423
10k
R515
100R706
0R704
47uH
L501 68uH
L502
0.01C706
0R701
RT1P141C-TP-1
Q402
FLASH PROGRAMMING BUFFER
100kR402
RT1N141C-TP-1
Q701
FLASH PROGRAMMING BUFFER
JL001 JL002 JL003 JL004 JL005 JL006 JL007 JL008 JL009 JL010 JL011 JL012 JL013 JL014 JL015 JL016 JL017 JL018 JL019 JL020 JL021 JL022 JL023 JL024 JL025 JL026 JL027 JL028
JL029 JL030 JL031 JL032 JL033 JL034 JL035 JL036
JL037
JL038
JL039 JL040
JL041
560pC201 560pC101
1kR101 1kR201
RT1N141C-TP-1
Q401
10V
100
C701 2.2uH
FB701
0.01C421
0.01
C424
0.01
C423
0.01
C704
0.01
C416
0.01
C429
LRB751V-40T1G
D401
LBAT54ALT1G
D701
10V
330
C514
12345
NJM2387ADL3(TE2)
IC503
USB POWER CONTROL SWITCH
RT1N141C-TP-1
Q504
RT1N141C-TP-1
Q505
MAZ8039GLLS0
D510
1
C519
0.1
C516
0.1
C513
MAZ8056GMLS0
D505
10V
C523
100
10V
220
C518
12k
R503
0.5%
56k
R518
0.5%
10k
R520
0.5%
3.3k
R521
FB705
0
R512
100R462 100R460 100R464 100R463 100R459 100R461
0
R465
0.1C435
1C422
27pC419
0.01C434 0.01C436
16V
10
C703
654
321
DDG
SDD
TPC6108(T5RSONYF,M
Q502
USB POWER SWITCH
654
321
DDG
SDD
RSQ035P03TR
Q503
SWITCHING REGULATOR
X401
7.92MHz 470R410
FB702
0
R466
R714 0
R712 0
MA2J1110GLS0
D502
MA2J1110GLS0
D511
MA2J1110GLS0
D512
R467 0
470p
C521
2.2kR443 2.2kR444 2.2kR442
FB707
FB301
C420 33p
R411 100k
R445
100k
R418 100k
123456789101112131415161718192021222324252627282930
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
515253545556575859606162636465666768697071727374757677787980
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
100
IC401
MB90F882PF-G-111E1
SYSTEM CONTROL
CYRIL_SEL
B-OUT_SEL
COL SW_SEL
ILLUMI_SEL
NCO
NCO
NOSE_SW
NCO
NCO
NCO
RE_IN0
RE_IN1
X_OUT
X_IN
VCC
VSS
C
UNISI
UNISO
UNISCK
USB_ON
I2C_SIO
I2C_SCK
USB_OVER
BUS_ON
SYS_RST
CD_ON
CDM_ON
ACC_IN
TEL_ATT
ATT
AVCC AVRH
RC_IN1
AVSS
QUALITY
VSM
SA_IN
KEY_IN1 KEY_IN0
RC_IN0
NCO NCO
VSS
KEY_ACK0 KEY_ACK1
EXTATT_XEN
LCD_CE
LCD_SO
LCD_SCK
MD2
MD1
MD0
RESET
AREA_SEL2
AREA_SEL1
AREA_SEL0
WAKE_UP
MC_RX
MC_TX
CLK_IN
Z_MUTE
NCO
TEST
VCC
VSS
NCO
AMP_STB
DIAG
VBUS_ON
SA_OUT
SA_CLK
NCO
TU_ATT
NSMASK
RDS_ON
FLASH_EN0
FLASH_EN1
NCO
NCO
NCO TU_ATTIN BU_CHECK EQ TYPE_SEL NCO NCO NCO NCO NCO VCC VSS OSC_OUT OSC_IN NCO SIRCS NCO BEEP ZAPPIN SYNC_OUT DD_ON
R468 100k
R452 100k
R454 100k
R414 100k
R430 100k
R436 100
R450 100k
S402
R600
100k
R416 100k
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 20 21 22
23 24
BUS3 BUS4 BUS5
BUS1
MC_TX
MC_RX
RE0
LCD_CE
Z_MUTE
WAKE_UP
SA_CLK
SA_DA
SA_IN
SIRCS
NOSE_SW
CLK_IN
WAKE_UP
VBUS_ON
SYNC_OUT
MC_RX
CDM_ON
DD_ON
VBUS_ON
UART/CLK
XFLASH
LCD_CLK
LCD_DATA
MC_TX
UART/CLK
CLK_IN
XFLASH
Z_MUTE
MC_RX
MC_TX
CD_ON
CDM_ON
SYNC_OUT
CD_ON
RE1
I2C_SIO
I2C_SCK
BU_IN
XFLASH
KEY1
RC0 KEY0
ACC
ZAPPIN
ATT
DD_ON
RC1
VIN
CONT
VOUT
VADJ
GND
(MG-101Y)
(1/2)
CD MECHANISM
UNIT
BU_IN
DC/DC
CONVERTER
Q504,505
USB OVER CURRENT DETECT
PROGRAMMING
FLASH
BUFFER
-1 -2
SELECT
FREQUENCY
FM(200k)
AM(10k) AM(9k)
FM(50k)
FLASH
(PROGRAMMING )
4-5. SCHEMATIC DIAGRAM – MAIN Section (2/3) – • See page 17 for waveforms. • See page 24 for IC Block Diagrams. • See page 27 for IC Pin Function Description.
(Page21) (Page21)
(Page19)