Sony Cdx-gt272

CDX-GT272
SERVICE MANUAL E Model

Ver. 1.0 2008.02
• The tuner and CD sections have no adjustments.

CDX-GT170/GT170S/
Model Name Using Similar Mechanism
GT270/GT270S
CD Drive Mechanism Type MG-101TC-188//C
Optical Pick-up Name DAX-25A
SPECIFICATIONS
CD Player section Power amplifier section Power requirements: 12 V DC car battery
Signal-to-noise ratio: 120 dB Outputs: Speaker outputs (sure seal connectors) (negative ground (earth))
Frequency response: 10 – 20,000 Hz Speaker impedance: 4 – 8 ohms Dimensions: Approx. 178 × 50 × 179 mm
Wow and flutter: Below measurable limit Maximum power output: 52 W × 4 (at 4 ohms) (7 1/8 × 2 × 7 1/8 in.) (w/h/d)
Mounting dimensions: Approx.
Tuner section General 182 × 53 × 162 mm
FM Outputs: (7 1/4 × 2 1/8 × 6 1/2 in.) (w/h/d)
Tuning range: Audio outputs terminal (front, sub/rear Mass: Approx. 1.2 kg (2 lb 11 oz)
87.5 – 107.9 MHz switchable) Supplied accessories:
Antenna (aerial) terminal: Power antenna (aerial) relay control terminal Card remote commander: RM-X151
External antenna (aerial) connector Power amplifier control terminal AUX cable
Intermediate frequency: 10.7 MHz/450 kHz Inputs: Parts for installation and connections (1 set)
Usable sensitivity: 9 dBf Antenna (aerial) input terminal
Selectivity: 75 dB at 400 kHz AUX input jack (stereo mini jack) Design and specifications are subject to change
Signal-to-noise ratio: Tone controls: without notice.
67 dB (stereo), 69 dB (mono) Low: ±10 dB at 60 Hz (XPLOD)
Harmonic distortion at 1 kHz: Mid: ±10 dB at 1 kHz (XPLOD)
0.5 % (stereo), 0.3 % (mono) High: ±10 dB at 10 kHz (XPLOD)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
AM
Tuning range: 530 – 1,710 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: 30 μV
FM/AM COMPACT DISC PLAYER

9-887-983-01 Sony Corporation
2008B04-1 Audio Business Group
© 2008.02 Published by Sony Techno Create Corporation
CDX-GT272
This compact disc player is classified as a CLASS 1 LASER

NOTES ON HANDLING THE OPTICAL PICK-UP
product. The CLASS 1 LASER PRODUCT label is located on the
BLOCK OR BASE UNIT
exterior.
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 This label is located on the bottom of the chassis.
care.
• CD playback
NOTES ON LASER DIODE EMISSION CHECK You can play CD-DA (also containing CD TEXT), CD-R/CD-
The laser beam on this model is concentrated so as to be focused RW (MP3/WMA files).
on the disc reflective surface by the objective lens in the optical
Type of discs Label on the disc
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
CD-DA
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
MP3
WMA
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) UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
CAUTION (Caution: Some printed circuit boards may not come printed with
Use of controls or adjustments or performance of procedures other than
the lead free mark due to their particular size)
those specified herein may result in hazardous radiation exposure.
: LEAD FREE MARK

If the optical pick-up block is defective, please replace the whole Unleaded solder has the following characteristics.
optical pick-up block. • Unleaded solder melts at a temperature about 40 °C higher
Never turn the semi-fixed resistor located at the side of optical than ordinary solder.
pick-up block. Ordinary soldering irons can be used but the iron tip has to be
optical pick-up 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.
semi-fixed resistor
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE

WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
CDX-GT272
TABLE OF CONTENTS
1. SERVICE NOTE ..................................................... 3 5. DIAGRAMS

5-1. Block Diagram –Main Section– ..................................... 17
2. GENERAL 5-2. Block Diagram –Display Section– ................................. 18
Location of Controls ....................................................... 5 5-3. Printed Wiring Board –Main Section–............................ 19
Connections .................................................................... 5 5-4. Schematic Diagram –Main Section (1/4)–...................... 20
5-5. Schematic Diagram –Main Section (2/4)–...................... 21
3. DISASSEMBLY 5-6. Schematic Diagram –Main Section (3/4)–...................... 22
3-1. Sub Panel Assy ............................................................... 8 5-7. Schematic Diagram –Main Section (4/4)–...................... 23
3-2. CD Mechanism Block ..................................................... 8 5-8. Printed Wiring Boards –Key Section– ............................ 24
3-3. Main Board ..................................................................... 9 5-9. Schematic Diagram –Key Section– ................................ 25
3-4. Servo Board .................................................................... 9
3-5. Chassis (T) Sub Assy ...................................................... 10 6. EXPLODED VIEWS
3-6. Roller Arm Assy.............................................................. 10 6-1. Main Section ................................................................... 29
3-7. Chassis (OP) Assy ........................................................... 11 6-2. Front Panel Section ......................................................... 30
3-8. Chucking Arm Sub Assy ................................................. 11 6-3. CD Mechanism Section (MG-101TC-188//C) ............... 31
3-9. Sled Motor Assy.............................................................. 12
3-10. Optical Pick-up Section .................................................. 13 7. ELECTRICAL PARTS LIST .............................. 32
3-11. Optical Pick-up ............................................................... 13
4. DIAGNOSIS FUNCTION ..................................... 14
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 (CNP301) and the SERVO board

(CN2) with the extension cable (Part No. J-2502-076-1).
MAIN BOARD
CNP301 J-2502-076-1
SERVO BOARD
CN2
3
CDX-GT272
NOTE FOR REPLACEMENT OF THE AUX JACK (J901) NOTE FOR REPLACEMENT OF THE SERVO BOARD
To replace the AUX jack requires alignment. When repairing, the complete SERVO board (A-1201-631-A)
1. Insert the AUX jack into the KEY board. should be replaced since any parts in the SERVO board cannot be
2. Place the KEY board on the front panel. repaired.
3. Solder the three terminals of the jack.
NOTE FOR THE 15-PIN CONNECTOR (CN901)
Do not use alcohol to clean the 15-pin connector (CN901) connect-
ing the front panel with the main body.
Do not touch the connector directly with your bare hand. Poor con-
KEY board
tact may be caused.
AUX jack
front panel
NOTE FOR REPLACEMENT OF THE FRONT PANEL

AND BUTTONS
When any of the following parts have been replaced, apply the
HANARL SFL-9A (Part No.7-400-000-00) to the specified posi-
tion.
• PANEL (SV) ASSY

• LAVEL (SEEK)
• BUTTON (SOURCE)
• BUTTON (MODE)
• LAVER (BASE)
• BUTTON (INNER)
please apply the HANARL SFL-9A

(Part No.7-400-000-00) to the
specified position.
4
CDX-GT272
SECTION 2
This section is extracted
GENERAL from instruction manual.
• LOCATION OF CONTROLS
Location of controls and basic operations

Main unit I MODE button page 8 The following buttons on the card remote
To select the radio band (FM/AM). commander have also different buttons/functions
1 2 3 4 5 6 from the unit. Remove the insulation film before
J Number buttons use (page 4).
CD:
(1)/(2): ALBUM –/+ (during MP3/WMA qg < (.)/, (>) buttons
OFF playback) To control CD/radio, the same as (SEEK)
To skip albums (press); skip albums +/– control on the unit.
SOURCE
continuously (press and hold). Setup, sound setting, etc., can be operated by
H SELECT
SEEK AUX
(3): REP page 8 < ,.

(4): SHUF page 8
PUS
SEEK
MODE qh DSPL (display) button
ALBUM REP SHUF PAUSE SCRL
(6): PAUSE
1 2 3 4 5 6 EQ3 DSPL
To pause playback. To cancel, press To change display items.
again. qj VOL (volume) +/– button
Radio: To adjust volume.
To receive stored stations (press); store
78 9 q; qa qs qd qf stations (press and hold). qk ATT (attenuate) button
To attenuate the sound. To cancel, press
K EQ3 (equalizer) button page 9 again.
Card remote commander This section contains instructions on the location To select an equalizer type (XPLOD,
of controls and basic operations. VOCAL, EDGE, CRUISE, SPACE, ql SEL (select) button
RM-X151 For details, see the respective pages. GRAVITY, CUSTOM or OFF). The same as the select button on the unit.
The corresponding buttons on the card remote L DSPL (display)/SCRL (scroll) button w; M (+)/m (–) buttons
1 qk commander control the same functions as those
page 8 To control CD, the same as (1)/(2)
OFF ATT
on the unit.
2 ql To change display items (press); scroll the (ALBUM –/+) on the unit.
SOURCE SEL MODE A OFF button display item (press and hold). Setup, sound setting, etc., can be operated by
9 M m.
qg To power off; stop the source.
M Receptor for the card remote
B SOURCE button commander wa SCRL (scroll) button
+
To power on; change the source (Radio/CD/ To scroll the display item.
w; AUX). N AUX input jack page 10
ws Number buttons
– To connect a portable audio device.
C Volume control dial/select To receive stored stations (press); store
qh DSPL SCRL wa button page 8, 9 stations (press and hold).
1 2 3
To adjust volume (rotate); select setup items Note
4 5 6
ws (press and rotate). If the unit is turned off and the display disappears, it
cannot be operated with the card remote commander
D Disc slot unless (SOURCE) on the unit is pressed, or a disc is
Insert the disc (label side up), playback inserted to activate the unit first.
+
qj VOL
–
starts.
E Display window
F Z (eject) button
To eject the disc.
G SEEK +/– control
CD:
To skip tracks (push up/down); skip tracks
continuously (push up/down, then push up/
down again within about 1 second and hold);
reverse/fast-forward a track (push up/down
and hold).
Radio:
To tune in stations automatically (push up/
down); find a station manually (push up/
down and hold).
H (front panel release) button page 5
6 7
• CONNECTIONS
Connection example
Notes
A • Be sure to connect the ground (earth) lead before connecting
the amplifier.
• The alarm will only sound if the built-in amplifier is used.
AUDIO OUT FRONT

Ejemplo de conexiones
Notas
• Asegúrese de conectar primero el cable de conexión a masa
antes de realizar la conexión del amplificador.
AUDIO OUT REAR* • La alarma sonará únicamente si se utiliza el amplificador
incorporado.
* AUDIO OUT SUB/REAR
AUDIO OUT FRONT
AUDIO OUT REAR*
* AUDIO OUT SUB/REAR
5
CDX-GT272
*1
*1 RCA pin cord (not supplied)

*2 AUDIO OUT can be switched 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
(altavoz potenciador de graves) o REAR (posterior). Para
obtener información, consulte el manual de instrucciones
suministrado.
*1
AUDIO OUT
FRONT
R
from car antenna (aerial)
REAR FRONT
desde la antena del automóvil AUDIO OUT
AUDIO OUT Fuse (10 A)

REAR*2 Fusible (10 A)
2
Blue/white striped
AMP REM Con rayas azules y blancas
3 Max. supply current 0.3 A
Corriente máx. de alimentación de 0,3 A
White
Blanco Black
Negro
Left
Izquierdo 1
White/black striped
Con rayas blancas y negras
Gray
Gris Blue
Azul ANT REM
Right
Derecho Max. supply current 0.1 A
2
Gray/black striped Corriente máx. de alimentación de 0,1 A
Con rayas grises y negras
Green
Verde Red
Left Rojo
Izquierdo 4
Green/black striped
Con rayas verdes y negras
Purple
Morado Yellow
Amarillo
Right
Derecho 5
Purple/black striped
Con rayas moradas y negras
Connection diagram Diagrama de conexión

1 To a metal surface of the car 1 A una superficie metálica del automóvil
First connect the black ground (earth) lead, then connect the Conecte primero el cable de conexión a masa negro, y
yellow, and red power supply leads. después los cables amarillo y rojo de fuente de alimentación.
2 To the power antenna (aerial) control lead or 2 Al cable de control de la antena motorizada
power supply lead of antenna (aerial) booster o al cable de fuente de alimentación del
amplifier amplificador de señal de la antena
Notes Notas
• It is not necessary to connect this lead if there is no power • Si no se dispone de antena motorizada ni de amplificador
antenna (aerial) or antenna (aerial) booster, or with a de antena, o se utiliza una antena telescópica accionada
manually-operated telescopic antenna (aerial). manualmente, no será necesario conectar este cable.
• When your car has a built-in FM/AM antenna (aerial) in • Si el automóvil incorpora una antena de FM/AM en el
the rear/side glass, see “Notes on the control and power cristal trasero o lateral, consulte “Notas sobre los cables
supply leads.” de control y de fuente de alimentación”.
3 To AMP REMOTE IN of an optional power 3 A AMP REMOTE IN de un amplificador de
amplifier potencia opcional
This connection is only for amplifiers. Connecting any other Esta conexión es sólo para amplificadores. La conexión de
system may damage the unit. cualquier otro sistema puede dañar la unidad.
4 To the +12 V power terminal which is 4 Al terminal de alimentación de +12 V que
energized in the accessory position of the recibe energía en la posición de accesorio
ignition key switch del interruptor de encendido
Notes Notas
• If there is no accessory position, connect to the +12 V • Si no hay posición de accesorio, conéctelo al terminal de
power (battery) terminal which is energized at all times. alimentación (batería) de +12 V que recibe energía sin
Be sure to connect the black ground (earth) lead to a interrupción.
metal surface of the car first. Asegúrese de conectar primero el cable de conexión a
• When your car has a built-in FM/AM antenna (aerial) in masa negro a una superficie metálica del automóvil.
the rear/side glass, see “Notes on the control and power • Si el automóvil incorpora una antena de FM/AM en el
supply leads.” cristal trasero o lateral, consulte “Notas sobre los cables
5 To the +12 V power terminal which is de control y de fuente de alimentación”.
energized at all times 5 Al terminal de alimentación de +12 V que
Be sure to connect the black ground (earth) lead to a metal recibe energía sin interrupción
surface of the car first. Asegúrese de conectar primero el cable de conexión a masa
Notes on the control and power supply leads negro a una superficie metálica del automóvil.
• The power antenna (aerial) control lead (blue) supplies +12 V Notas sobre los cables de control y de fuente de
DC when you turn on the tuner. alimentación
• When your car has built-in FM/AM antenna (aerial) in the rear/ • El cable de control de la antena motorizada (azul) suministrará
side glass, connect the power antenna (aerial) control lead cc de + 12 V cuando conecte la alimentación del sintonizador.
(blue) or the accessory power supply lead (red) to the power • Si el automóvil dispone de una antena de FM/AM incorporada
terminal of the existing antenna (aerial) booster. For details, en el cristal trasero o lateral, conecte el cable de control de
consult your dealer. antena motorizada (azul) o el cable de fuente de alimentación
• A power antenna (aerial) without a relay box cannot be used auxiliar (rojo) al terminal de alimentación del amplificador de
with this unit. antena existente. Para obtener más información, consulte a su
Memory hold connection distribuidor.
When the yellow power input lead is connected, power will • Con esta unidad no es posible utilizar una antena motorizada
always be supplied to the memory circuit even when the ignition sin caja de relé.
switch is turned off. Conexión para protección de la memoria
Notes on speaker connection Si conecta el cable de fuente de alimentación amarillo, el circuito
• Before connecting the speakers, turn the unit off. de la memoria recibirá siempre alimentación, aunque apague el
• Use speakers with an impedance of 4 to 8 ohms, and with interruptor de encendido.
adequate power handling capacities to avoid its damage. Notas sobre la conexión de los altavoces
• Do not connect the speaker terminals to the car chassis, or • Antes de conectar los altavoces, desconecte la alimentación
connect the terminals of the right speakers with those of the de la unidad.
left speaker. • Utilice altavoces con una impedancia de 4 a 8 Ω con la
• Do not connect the ground (earth) lead of this unit to the capacidad de potencia adecuada para evitar que se dañen.
negative (–) terminal of the speaker. • No conecte los terminales de altavoz al chasis del automóvil,
• Do not attempt to connect the speakers in parallel. ni conecte los terminales del altavoz derecho con los del
• Connect only passive speakers. Connecting active speakers izquierdo.
(with built-in amplifiers) to the speaker terminals may damage • No conecte el cable de conexión a masa de esta unidad al
the unit. terminal negativo (–) del altavoz.
• To avoid a malfunction, do not use the built-in speaker leads • No intente conectar los altavoces en paralelo.
installed in your car if the unit shares a common negative (–) • Conecte solamente altavoces pasivos. Si conecta altavoces
lead for the right and left speakers. activos (con amplificadores incorporados) a los terminales de
• Do not connect the unit’s speaker leads to each other. altavoz, puede dañar la unidad.
Note on connection • Para evitar fallas de funcionamiento, no utilice los cables de
If speaker and amplifier are not connected correctly, “FAILURE” altavoz incorporados instalados en el automóvil si la unidad
appears in the display. In this case, make sure the speaker and comparte un cable negativo común (–) para los altavoces
amplifier are connected correctly. derecho e izquierdo.
• No conecte los cables de altavoz de la unidad entre sí.
Nota sobre la conexión
Si el altavoz no está conectado correctamente, aparecerá
“FAILURE” en la pantalla. Si es así, compruebe la conexión del
altavoz.
6
CDX-GT272
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
SET
3-1. SUB PANEL ASSY

(Page 8)
3-2. CD MECHANISM BLOCK

(Page 8)
3-3. MAIN BOARD 3-4. SERVO BOARD

(Page 9) (Page 9)
3-5. CHASSIS (T) SUB ASSY

(Page 10)
3-6. ROLLER ARM ASSY

(Page 10)
3-7. CHASSIS (OP) ASSY

(Page 11)
3-8. CHUCKING ARM SUB ASSY

(Page 11)
3-9. SLED MOTOR ASSY

(Page 12)
3-10. OPTICAL PICK-UP SECTION

(Page 13)
3-11. OPTICAL PICK-UP

(Page 13)
7
CDX-GT272
Note: Follow the disassembly procedure in the numerical order shown below.
3-1. SUB PANEL ASSY

two claws

two claws
two screws
(+PTT 2.6 × 6)
sub panel assy
3-2. CD MECHANISM BLOCK

bracket (CD)

CD mechanism block

two screws
(+PTT 2.6 × 4)

screw
(+PTT 2.6 × 6)

CNP301

screw
(+PTT 2.6 × 6)
8
CDX-GT272
3-3. MAIN BOARD

two screws
(+PTT 2.6 × 8)

two screws
(+P 2.6 × 8)
two screws
(+PTT 2.6 × 10)

three ground point screws
(+PTT 2.6 × 6) screw
(+P 2.6 × 10)

screw
(+PTT 2.6 × 10)

heat sink

MAIN board
insulating sheet
3-4. SERVO BOARD
WHT
RED
BLK
WHT
toothed lock screw
RED (M 1.7 × 2.5)
BLK
RED
ORG
toothed lock screw
BLU (M 1.7 × 2.5)
YEL SERVO board
GRY

Remove the eleven solders.
SERVO board

optical pick-up (16 core)
(CN1)
claw
claw
9
CDX-GT272
3-5. CHASSIS (T) SUB ASSY

two precision screws

two precision screws (+P 1.7 × 2.2)
(+P 1.7 × 2.2)

chassis (T) sub assy

claw
3-6. ROLLER ARM ASSY

roller arm assy

gear (RA1)

spring (RAL)

washer

spring (RAR)
10
CDX-GT272
3-7. CHASSIS (OP) ASSY
chassis (OP) assy

tension spring (KF)

coil spring (damper) (natural)

coil spring (damper) (green)

slider (R)

lever (D)

gear (LE1)
3-8. CHUCKING ARM SUB ASSY

chucking arm sub assy

spring
Note: Have this portion receive the chassis. Note: Have this portion receive the chassis.
Note: Be careful not to touch the turn table.
11
CDX-GT272
3-9. SLED MOTOR ASSY

three serration screws
(M 2 × 3)

sled motor assy

spring
turn table spring
stand
Note:
Never remove these parts since they were adjusted.
stand
Note: Place the stand with care not to touch the turn table.
Note for Assembly

three serration screws
(M 2 × 3)
sled motor assy
Note: Take care to prevent the chassis from being bent

when tightening the three machine screws.
12
CDX-GT272
3-10. OPTICAL PICK-UP SECTION

optical pick-up section
Note: Be careful not to touch the lens and hologram

terminal when removing the optical pick-up section.
3-11. OPTICAL PICK-UP

pan tapping screw
(M 1.4 × 2.5)

leaf spring (sub guide)

leaf spring (OP)

optical pick-up

lead screw assy
Notes for Assembly
Prevent the end of the Prevent the end of the There is space at the end of the
leaf spring (sub guide) from being leaf spring (sub guide) from being leaf spring (sub guide) to avoid
in contact with the OP slide base. in contact with the OP slide base. contact with the slide.
13
CDX-GT272
SECTION 4
DIAGNOSIS FUNCTION
Description of the Diagnostics function: 4. Contents of each display mode
4-1. Reset count display mode
1. Setting the Diag display mode
With the power off, press the [4] button, [5] button, and [4]
button on the set body or the remote control (for more than 2 99
seconds) in turn.
Reset count
(in hexadecimal format)
2. Canceling the Diag display mode Diag code
During the Diag function mode, press the [OFF] button. 01: Reset count
3. Initial display in the Diag display mode.

Just when the Diag mode is entered, “reset count” is displayed. 4-2. Reset count by watchdog timer display mode
The display mode is switched by each rotation of [> SEEK
+] or [. SEEK –] keys. 99
Reset count
Reset count display
Diag cord
02: Number of resets by
99 watchdog timer
Reset count by watchdog timer display 4-3. Number of connected units display mode
99
999
Number of connected units display Show the number of connected units for
CD-C,MD-C and XM respectively from
the rightmost (in hexadecimal format).
999
Recency of information
1-3: 1 represents the latest.
Operating hours display Diag code
03: Number of connected unit.
9999
The display mode is switched by each rotation of [2/ALBM+] or
[1/ALBM–] keys during the number of connected units display
CD error information display mode.
99
No. of connected units history 1 (latest) display
OFFSET/FAILURE error display

999
99999
No. of connected units history 2 display
999
No. of connected units history 3 display
999
4-4. Operating hours display mode
9999
Operating hours
Diag code
04: Operating hours
14
CDX-GT272
4-5. CD error information display mode 4-6. OFFSET/FAILURE error display mode
4-5-1. Error description
99999
99
Error information Operating hours
Error description
(in hexadecimal Indication Description Error description
format) (0: OFFSET, 1: FAILURE)
1X SERVO ERROR Recency of information
Recency of information
1-3: 1 represents the
3X LOADING ERROR 1-3: 1 represets the latest
latest. 4X TRACK JUMP Diag code
Diag code 5X TEXT ERROR
06: OFFSET/FAILURE
05: CD error information FX MECHA ERROR

4-5-2. Disc type and operating hours [1/ALBM–] keys during the OFFSET/FAILURE error display
mode.
Disc type
99999 Indication Disc type
Operating hours 0 MP3 OFFSET/FAILURE error history 1 (latest) display
Disc type 1 WMA
Recency of information 2 AAC
99999
1-3: 1 represets the 3 ATRAC
latest. 8 CD/DA
Diag code
05: CD error information F UNKNOWN OFFSET/FAILURE error history 2 display
99999
[1/ALBM–] keys during the CD error information display mode.
OFFSET/FAILURE error history 3 display
CD error info history 1 (latest) 99999

Error description plus error details display
99
CD error info history 1 (latest)

Disc type plus Operating hours display
99999
CD error info history 2

99

99999

99

99999
15
CDX-GT272
MEMO
16
CDX-GT272
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM – MAIN Section –
ELECTRONIC VOLUME
IC401
SUBOUT L 21 L
SUBOUT R 22 R-CH REAR
J330
R-CH R
AUDIO
OUT
L
FRONT
R-CH R
I2C BUS CONTROLLED
J901 R-CH POWER AMP/MULTIPLE
9 AUX-LCH MUTE VOLTAGE REGULATOR
AUX IC750
R-CH 7 AUX-RCH Q481
CN601
1
OUT-FL 25 12 IN-FL OUT-FL+ 5 FL+
8 AUX GND 9
OUT-FL– 3 FL–
OUT-RL 23 11 IN-RL
TU1 2
(TUNER UNIT) OUT-RL+ 9 RL+
MUTE MUTE 10
OUT-FR 26 R-CH (FRONT) OUT-RL– 7 RL–
Q441 Q461
J1 OUT-RR 24 R-CH (REAR)
1 ANT L-CH 4 4 TU-LCH
(ANTENNA) VOLATT
R-CH 3 R-CH R-CH 3 TU-RCH MUTE 28
4
I2C-SCL FR+
SCL 29 12
I2C-SDA R-CH FR–
SDA 30 R-CH 3
RR+
6 CD-LCH MUTE D479 11
CONTROL SWITCH RR–
R-CH 5 CD-RCH BATT
Q478,479
5
AMP-REM 29 AMP-REM
6
I2C-SCL I2C-SCL ANT-REM 27 ANT-REM
TU-SCL 13 4 SCL
I2C-SDA I2C-SDA BATT
TU-SDA 14 2 SDA FU601
SYSTEM CONTROL 16
AUDIO +8.3V 10 VCC (+8.3V) VP 35 BATT
IC501 (1/2)
TU+5V 11 TU-VDD (TU+5V) VP1 20
B.U +3.3V 15 E2P-VDD VP2 6
QUALITY
QUALITY 5 38 QUALITY
VSM
S-METER 6 39 VSM
TUATT I2C-SCL B.UP+B 37 B.U+3.3V
TU-MUTE 7 12 TU ATT I2C_CKO 33 D511
I2C-SDA BU +3.3V
EEP-SCL I2C_SIO 34
E2P-SCL 16 25 EEP_CKO AUDIO+8.3V 30 AUDIO +8.3V
EEP-SDA
E2P-SDA 17 24 EEP_SIO SERVO+3.3V 31 SERVO+3.3V
VOL ATT 9
MECHA+6V 33 MECHA+6V
ATT 86 PANEL+B 34 PANEL+B
BEEP 5 16 BEEP
AMPSTB 26 22 STB
DIAG 8 25 DIAG
CNP301
11 AU_LCH
15 AU_RCH
R-CH
D512 ACCESSORY CHECK 7

ACC_IN 72 Q631 ACC
22 UNI_SO
59 UNISO
24 UNI_SI
58 UNISI
26 UNI_CLK
60 UNISCK
16 Z_MUTE
93 Z-MUTE
5 CD_ON
CD 98 CD_ON
MECHANISM 7 CDM_ON BATTERY OVER VOLTAGE
99 CDM_ON BU IN 54 CHECK CHECK
UNIT BATT
D510 Q581,582 Q580,D580,581
(MG-101TC) 6 SYS_RST
77 RESET
21 EJECT_OK
BU+3.3V 88 SYSRST
27 BUS_ON
87 BUSON
TU+5V REG
TU+5V AUDIO +8.3V
Q1,D1 • R-CH is omitted due to same as L-CH.
• Signal Path
: CD PLAY
9 A_ATT
25 BU_IN : FM
18 D_+3.3V : AM
SERVO +3.3V RESET
19 A_+3.3V IC602 : BUS
8 BU_+3.3V
BU_+3.3V : AUX
1,2 DR_+6V 1 VOUT VDD 2 BU +3.3V
MECHA +6V
CDX-GT272
17 17
CDX-GT272
5-2. BLOCK DIAGRAM – DISPLAY Section – THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
SYSTEM CONTROL LCD DRIVE
IC501 (2/2) IC901 For Printed Wiring Boards. For Schematic Diagrams.
Note: Note:
• X : Parts extracted from the component side. • All capacitors are in μF unless otherwise noted. (p: pF)
KEY MATRIX 40 KEYIN1 • Y : parts extracted from the conductor side. 50 WV or less are not indicated except for electrolytics
LSW901–910, 3 • a : Through hole. and tantalums.
S901–904 41 KEYIN0 S1 |
LCD_SO 28 48 DI I 34 LCD901 • : Pattern from the side which enables seeing. • All resistors are in Ω and 1/4 W or less unless otherwise
D503 LCD_CKO 29 47 CL S33 • (The other layers' patterns are not indicated.) specified.
39 LIQUID
LCD_CE 27 46 CE CRYSTAL • f : internal component.
COM1 35 DISPLAY Caution: • C : panel designation.
KEY ACKNOWLEDGE I | PANEL Pattern face side: Parts on the pattern face side seen from
COM4 38
BACK LIGHT
SWITCH 52 KEY ACK (SIDE B) the pattern face are indicated. Note: The components identified by mark 0 or dotted
Q664
DIMMER
Parts face side: Parts on the parts face side seen from line with mark 0 are critical for safety.
(SIDE A) the parts face are indicated. Replace only with part number specified.
76 AD_ON
1 2
RE901
• A : B+ Line.
PANEL+B • Indication of transistor.
PUSH SELECT • B : B– Line.
LED931
(VOLUME) • H : adjustment for repair.
( LCDLIGHT
BACK
) LSW901–910,
LED941,942,
C
• Voltages and waveforms are dc with respect to ground
ROTARY RE-0 Q These are omitted. under no-signal (detuned) conditions.
31 RE-IN0 951–954
ENCODER RE-1
32 RE-IN1 ( KEY
ILLUMINATE ) B E no mark : FM
( ) : AM
< > : CD PLAY
* : Impossible to measure
DIMMER
• Voltages are taken with a VOM (Input impedance 10 MΩ).
SWITCH Voltage variations may be noted due to normal production
Q931 BC E tolerances.
These are omitted. • Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
LCD tolerances.
BACK LIGHT
SWITCH
• Circled numbers refer to waveforms.
Q932 EC B • Signal path.
These are omitted. J : CD PLAY
F : FM
f : AM
79 XOUT L : AUX
X502
32.768kHz
80 XIN
• Waveforms
82 OSCIN – MAIN Board –
X501
18.432MHz
83 OSCOUT
IC501 VM (XOUT)
REMOTE CONTROL
SIGNAL RECEIVER
0.7 Vp-p
IC971
7 NOSE_SW SIRCS 64 3 OUT IR
32.768 kHz
0.5 V/DIV, 20 μsec/DIV
IC501 JE (OSC OUT)
1.8 Vp-p
18.432 MHz
0.5 V/DIV, 20nsec/DIV
CDX-GT272
18 18
CDX-GT272
5-3. PRINTED WIRING BOARD – MAIN Section – • : Uses unleaded solder.

1 2 3 4 5 6 7 8 9 10 11 12 13 14
J330
AUDIO OUT
A
REAR FRONT
J1
(ANTENNA) L R L R
-1 -2 -3 -4
JC753
JC754
JC755
CN601
C454
RED
C464 C444 C434 C775 C774
JW34
JW32
FU601
B R482 R472
C751 C771 IC750 C765
JW9
C764
JW1
Q471 Q441 Q431 R432
JW3 JW2
C763
JW11
JW137
JW12
JW10
JW13
JW138
JW14
R442 C753 C617
R471
C442 JW16
JW19 D617
C
C432
JW22
JW15
Q481 C445
C435 C618
D756
D755
D757
JW21
JW7
JW6
JW4
JW8
D601
JW5
C601
R441 R431
D758
RED
C452 Q451 C623
R481
C441
C462
D761
D753
D752
D754
D751
C602
C465 R452
C622
(CHASSIS)
C471
D760
D759
C455 R462 L601
R451 Q461 D762
C451
TU1 R461 JW35
D JW38 C770
C481
JW31
C750 • Semiconductor
JW26
C769
C461 JW39
JW18
C431
JW111
Location
JW88
JW23
Ref. No. Location
JW17
JW24
JW25
C404 CD
C412
JW92
JW102
MECHANISM
C405 C401 D1 F-3
C758
R401 CNP301 UNIT

(MG-101TC)
C8 D153 I-2
JW42
C413 C776
JW27
JW93 JW20 Q479 D479 E-6
E IC401
C756 R479 D479
R539
JW55 D502
D503
H-7
I-5
JW131
C754
JW132
JW98 D510 G-8
C479
C4 JC681
C343
R1 R412 Q478
C12 R752
JW95 C302 D511 F-6
D1 R413 C755
C13 D512 H-8
C301
C308
R414 JW96
JW94 C6
JW91 C310 R302
JW106 D580 F-10
JW97
JW30
JW66
D581 F-10
JW29
R2 C5 JW115
R583
L1 JW129 C309 R301
R3 D581 D601 C-10
F FB1 Q1 JW130 C407 C406
C312
Q580
D617 C-8
R582
JW101 R12 R557
D511
FB604
R528 D704 I-3
JW89
D719 I-4
JW28
R531
JW99
R13 D580
JW135
C7
R677
JW117 D751 D-7
JW127
JW100
JW45
JW124
JW114
D752 D-7
C305
C306
JW118
JW109
JW56
JW50
R549
R524
R5 JW90
R526 R572 D753 D-6
R9
JW123 D754 D-7
R631
R548
JW120
JW37
R4 R537 R507
R527 R574 D755 C-6
G
R8 JW83 R534 R675
FMB3 R566
JW80 R506 R756 R578 JW57
Q631 D756 C-6
D510 D757 C-6
JW40
R544 R532 R634

JW121
C510
C511 R676
R632
D758 C-6
D759 D-8
JW67
JW36
JW122 R509
R633
JW51
C631
JW69
D760 D-8
JW103
C503
JW48
JW59
JW49
JW72 C504
X501
JW46
D761 C-9
R570
JW79 D762 D-9

JW54
R511
R510 R512
JW78 R563
H
C153
R664
JW119
1
C522
50
R155 R679 JC533 R547

C508 IC401 E-3
R522 R662
IC
C523 R636
D512 R556
IC501 H-6
R661
R151 C507 R541

R663 X502
R521
R543
C151
C152
R540 IC602 I-9
JW44
R601
C154 R153 C513 D502 R519 R672 JW75 IC750 B-6
JW133
R154
R533 C519 Q581
R674
JW73
C155 C516 R529

JW71
JW76
R152
JW70
JW108
JW74
L151 R502 C512 JW65 Q582

JW87
C157 C501 C514 R568 R692

R542 3 2 Q1 F-2
R561
D704 R504 JW82 4 1 R584

D153 C509
R536
IC602 Q431 C-4
JW104
JW105
JW61 R503 R690 R585

R505 R567 FMB4 R535 Q441 C-4
I JW142 JW139
D719
R513 D503
JC504 R558 R517
Q664 JW62 R673
Q451 C-4
JW141
JW140
Q461 D-4
JW77
JW63
JW68
R514 R565 JC510

C550
R671
11
Q471 C-3
Q478 E-6
1-874-377- (11) Q479 E-6
(CHASSIS)
X501 Q481 C-3
CN701
Q580 F-10
Q581 I-10
J Q582 I-10
Q631 G-9
A Q664 I-7
KEY BOARD CN901 (Page 24)
CDX-GT272
19 19
CDX-GT272
5-4. SCHEMATIC DIAGRAM – MAIN Section (1/4) – • See page 26 for IC Block Diagrams.
J330
C464 C454 C444 C434
TU1
C431 R431
Q431
R432
C412
J1 C401
R12
R13
C413
R2
R3
Q451
C404 R452
C405 C451 R451
C406
C7 C407
FB1
C5
C441 R441
R442 Q441
C8 R8
C13
R413 R412
C12 R9 R462 Q461
C4 R5 R4 C461 R461
R414 (Page 21)
R1 C481 R481
C6 IC401 R401 R482 Q481
Q1
D1 IC B/D
R472 Q471
C471 R471
L1
(Page22) (Page 23)
CDX-GT272
20 20
CDX-GT272
5-5. SCHEMATIC DIAGRAM – MAIN Section (2/4) – • See page 26 for IC Block Diagrams.
C775 C765 C764 C774
C751
D751
D752
C750
D753
IC B/D
D754
JC754
JC755 D755
D756
C435 C432
IC750 D757
D758
CN601
C455 C452
C445 C442
D759
D760
C465 C462
JC753
Q479 C753
D479 C618
(Page 20) FU601
R479 C754 C617
C763
D617
R752
C769
C755
D761
D762
C770
Q478 C479 C756
L601
JW111 C771
C602 C601 D601
C758
C776
(Page 22) (Page 23)
CDX-GT272
21 21
CDX-GT272
5-6. SCHEMATIC DIAGRAM – MAIN Section (3/4) – • See page 18 for waveforms. • See page 27 for IC Pin Function Description of IC501.
(Page 20) (Page 21)
D511
R531
R556 R533 R519 R690 R535 R558
C310
R674 JC533 R679
D502
C309 R672 D512
R539
R529
R692
R542
R536
R547
R636 C509 R543
C507
CNP301
R578 R563 R568
R517
D510
X502
R302 C508
Q664
C343 C301 C308
C302 R561
X501
R565
R301
C312 D503
C510 R509
R567
R528 C514 JC504
C511 R566
R675 R505 R673

R676 R671 (Page 23)
C305 C306 R504
R503
IC501 R502
C512
R574 C501 C516

R572 C513
R527
R526
R677 C523
R524
C522
R661
R663
R522
R521
R662
R511 R510
C504 R664
R557
R534
R544
C503
R507
R537
R549
R548
R756
R506
R514
R512
R513
R570
R532
JC510
C550
CDX-GT272
22 22
CDX-GT272
5-7. SCHEMATIC DIAGRAM – MAIN Section (4/4) –
(Page 21) (Page 20)
JC681
FB604
R155 C153 C151 C152

IC602
XC61CN2802NR C623
R153
C622 D719 R154
R601
C157 L151 R151 R152

C519
C154
C155
CN701
Q631
R633 R631
(Page 22) JW140

R634 C631 R632
R541 R540
(Page 25)
D153
D704
R584 R585
Q582 Q581
D580 R582
Q580
D581 R583
CDX-GT272
23 23
CDX-GT272
5-8. PRINTED WIRING BOARD – KEY Section – • : Uses unleaded solder.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
A
LED942 LED941 LED941,
LED942,
S901
S902
LED951–953 ;
OFF LED931
S902 (RING ILLUMINATION) S901
(LCD BACK LIGHT)
S903 LE
D9
B SOURCE 51
S903
53
LSW901
LCD901
D9
SEEK+
R902
LE
LSW901 LIQUID CRYSTAL DISPLAY PANEL
LED931
LSW902
SEEK–
R904
C R905 LSW902
52
D9
R975
C971
LE
S904
S904
D994
MODE LE 1
D9 37
R901
54
IC971
LSW906 IC971
LSW903 LSW904 LSW905 LSW907 LSW908 LSW909 LSW910
4 3
D 1 2 11
1-875-958- (11)
LSW903 LSW904 LSW905 LSW906 LSW907 LSW908 LSW909 LSW910
1/ALBUM– 2/ALBUM+ 3/REP 4/SHUF 5 6/PAUSE EQ3 DSPL/SCRL
(Page 19)
E MAIN BOARD CN701
R908
R912
R909
R910
R950
F R946 R945
R906 R949
R911
R907
R992
R952
R913 CN901
R948
R947
R951
FB904
R979
C988
R963
R985
C984
R986
C983
R984
C981
C987
R988
R944 R943 R978 D901
D992
D993
D991
R964
3 4 5
R977
G RE901
D998 Q932
Q931
D902 R933
FB902
R903 IC901 D903 R932 J901

R934 C901 J901
R974
R961
R931
R922 AUX
D981
R921
D982
R962 FB903
C986
R981
R982
2 1 FB901
R987
H
R941
RE901
PUSH SELECT R942
(VOLUME)
11
1-875-958- (11)
• Semiconductor Location
I Ref. No. Location Ref. No. Location Ref. No. Location
D901 G-11 D994 C-14 LED951 B-4
D902 G-12 LED952 C-5
D903 G-11 IC901 G-7 LED953 B-3
D981 H-10 IC971 D-14 LED954 C-3
D982 H-10
D991 G-11 LED931 C-13 Q931 G-10
D992 G-11 LED941 A-14 Q932 G-10
D993 G-11 LED942 A-1
CDX-GT272
24 24
CDX-GT272
5-9. SCHEMATIC DIAGRAM – KEY Section –
R931 R981 R975
R932 LED941 LSW904(2/2) R949 LED951

R982
R933 LSW901(2/2) LSW910(2/2)
R947 LED953 IC971
R941
LSW903(2/2) LSW907(2/2) LED952
R942 C971
LSW902(2/2) LSW905(2/2) LSW909(2/2) LED954
LED931
R945 LSW908(2/2) R961
LED942 C983 R984

LSW906(2/2) C981 C988
R943 R951 R963 C984 R985
IC901
R986
R987
R934
R946 R950 R962
Q931
D982
R977
D981
C986
R944 R948 R952 R964 R978
R988
R979
C987
Q932
R992
D998
C901
R901 R902 R903 R904 R905
CN901 LCD901
FB904
D903
LSW901(1/2)
LSW902(1/2)
S901
S902
S903
S904
R974
(Page 23)
RE901
R922
D901
D902
D991
D992
D993
D994
R906 R907 R908 R909 R910 R911 R912 R913
R921
LSW903(1/2)
LSW904(1/2)
LSW905(1/2)
LSW906(1/2)
LSW907(1/2)
LSW908(1/2)
LSW909(1/2)
LSW910(1/2)
FB901
J901 FB902
FB903
CDX-GT272
25 25
CDX-GT272
• IC Block Diagrams
IC401 BD3442FS-E2 (MAIN Board (1/4)) IC750 TDA8588BJ/N2/R1 (MAIN Board (1/4))
TAB 1
BUS-RCH 1 2 SDA
VCC2 32 FIL OUT–FL– 3 I2C BUS
100k
4 SCL
31 GND FL
BUS-LCH 2
OUT–FL+ 5
100k INPUT INPUT VOLUME1 TREBLE VOLUME2 6 VP2
SELECTOR GAIN /MUTE /BASS
TU-RCH 3 I2C 30 SDA OUT–RL– 7
/MIDDLE
BUS
100k LOGIC RL 8 PGND3
29 SCL
TU-LCH 4 OUT–RL+ 9
100k 28 MUTE 10 SVR

IN–RL 11
MUTE
CD-RCH 5
VCC 27 VCC 12 IN–FL
100k S–GND 13
PROTECTION/
CD-LCH 6 DIAGNOSTIC 14 IN–FR
MUTE
100k FADER 26 OUT-FR IN–RR 15
AUX-RCH 7 EFFECT 16 BEEP
VP
250k FADER 25 OUT-FL OUT–RR+ 17
AUX-GND 8 RR 18 PGND2
FADER 24 OUT-RR OUT–RR– 19
250k
AUX-LCH 9
FADER 23 OUT-RL 20 VP1
250k OUT–FR+ 21
DS3-L 10 STANDBY/
FR MUTE 22 STB
OUT–FR– 23
DS1-L 11 22 SUBOUT-R
FADER CHIP DETECT/
DS2-L 12 DIAGNOSTIC 24 PGND1
LPF BATTERY TEMPERATURE
21 SUBOUT-L DIAG 25 DETECTION PROTECTION ENABLE
EBIAS 13 FADER LOGIC
20 ADJ 26 RST
DS2-R 14
19 SAOUT
ANT–REM 27 SWITCH
SPECTRUM
DS1-R 15 ANALYZER 18 SADA
DS3-R 16 17 SACLK
28 CRES
AMP–REM 29 SWITCH
30 AUDIO+8.3V
SERVO3.3V 31
REGULATOR
32 GND
MECH6V 33
34 PANEL+B
VP 35
REFERENCE 36 CBU
VOLTAGE
LOADDUMP BACK-UP
B.UP+B 37 REGULATOR PROTECTION SWITCH
CDX-GT272
26 26
CDX-GT272
• IC Pin Function Description

MAIN BOARD IC501 MB90F045PF-G-9073-SPE1 (SYSTEM CONTROL)
Pin No. Pin Name I/O Description
1 AREASEL0 I Destination function setting pin 0
5 BEEP O BEEP signal output to power amplifier
6 CYRIL_SEL I Cyril correspondence discrimination signal input “L”: No correspondence
7 NOSE_SW I Front panel attachment detect signal input “L”: Panel on, “H”: Panel off
8 DIAG I Status signal input from power amplifier
9 VOLATT O Electronic volume attenuate control signal output
10 NCO O Not used. (Open)
11 VSS — Ground pin
12 TUATT O Tuner mute control signal output
13 NSMASK O Noise mask signal output Not used in this set. (Open)
14 NCO O Not used in this set. (Open)
15 NCO O Not used in this set. (Open)
16 to 22 NCO O Not used. (Open)
23 VCC5 — Power supply pin (+3.3V)
24 EEP_SIO I/O EEPROM bus serial data signal input/output
25 EEP_CKO O EEPROM bus serial clock signal output
26 AMPSTB O Stand-by signal output to power requlation
27 LCD_CE O Chip enable signal output to LCD driver
28 LCD_SO O Serial data signal output to LCD driver
29 LCD_CKO O Serial clock signal output to LCD driver
30 RDS ON O RDS (radio data system) ON signal output Not used in this set. (Open)
31 RE-IN0 I Rotary encoder signal input 0
32 RE-IN1 I Rotary encoder signal input 1
33 I2C_CKO O I2C bus serial clock signal output
34 I2C_SIO I/O I2C bus serial data signal input/output
35 DAVDD — A/D converter power supply pin (+3.3V)
36 AVRH — A/D converter external reference power supply pin (+3.3V)
37 DAVSS — A/D converter Ground pin
38 QUALITY I Noise detect signal input
39 VSM I S-meter voltage detect signal input
40 KEYIN1 I Key signal input 1
41 KEYIN0 I Key signal input 0
42 VSS — Ground pin
43 RC_IN0 I Rotary commander key signal input Not used in this set. (Pull up)
49 MD0 I Operation mode setting pin 0 (Pull up)
50 MD1 I Operation mode setting pin 1 (Pull up)
51 MD2 I Operation mode setting pin 2 (Pull down)
52 KEYACK I Key acknowledgment detect signal input
53 TU_ATTIN I Tuner mute zero cross detect signal input Not used in this set. (Pull down)
54 BUIN I Back-up power supply detect signal input
56 DAVN I RDS data block synchronized detect signal input Not used in this set. (Pull down)
58 UNISI I S-BUS data signal input
59 UNISO O S-BUS data signal output
60 UNISCK O S-BUS clock signal output
61 CODEC-SEL I MP3 select signal input “H”: MP3, “L”: Non-MP3
62 ILLUMI SEL I Illumination voltage setting signal input “H”: 10.4 V, “L”: 9.0 V
64 SIRCS I Remote control signal input
27
CDX-GT272
Pin No. Pin Name I/O Description

Memory mode select signal input
68 FLASH_W I
Normally “H” input: Single chip mode, after reset “L”: Flash write mode
69, 70 NCO O Not used. (Open)
71 RC_IN1 I Rotary commander shift key signal input Not used in this set. (Pull up)
72 ACC_IN I Accessory power supply detect signal input
73 TESTIN I Test mode detect signal input Not used in this set. (Pull up)
74 TELATT I Telephone attenuate detect signal input Not used in this set. (Pull down)
76 AD_ON O A/D converter power supply control signal output
77 RESET I System reset signal input
79 XOUT O Low speed operation clock signal output (32.768 kHz)
80 XIN I Low speed operation clock signal input (32.768 kHz)
81 VSS1 — Ground pin
82 OSCIN I High speed operation clock signal input (18.432 MHz)
83 OSCOUT O High speed operation clock signal output (18.432 MHz)
84 VCC3 — Power supply pin (+3.3 V)
85 DEMOSEL I DEMO select signal input “H”: DEMO on, “L”: DEMO off
86 ATT O Audio mute control signal output
87 BUSON O BUS ON signal output
88 SYSRST O System reset signal output
93 Z-MUTE I CD zero cross mute detect signal input
94 B OUT SEL I Black out with/without discrimination select signal input “H”: Black out
95 INI RS I REAR/SUB initial setting signal input “H”: REAR initial, “L”: SUB initial
Motion display signal input
96 MO DISP I
“H”: Motion display initial value on, “L”: Motion display initial value off
97 DIM_SEL I Dimmer select signal input “H”: No dimmer, “L”: Dimmer
98 CD_ON I CD mechanism servo power supply control request signal input
99 CDM_ON I CD mechanism deck power supply control request signal input
Illumination color select signal input
100 COL_SW I
“H”: Two colors selection/initial slave, amber, “L”: Color/slave, amber
28
CDX-GT272
SECTION 6
EXPLODED VIEWS
Note: • The mechanical parts with no reference
• -XX and -X mean standardized parts, so number in the exploded views are not sup-
they may have some difference from the plied. The components identified by mark 0
original one. • Color Indication of Appearance Parts Ex- or dotted line with mark 0 are critical for
• Items marked “*” are not stocked since ample: safety.
they are seldom required for routine ser- KNOB, BALANCE (WHITE) . . . (RED) Replace only with part number specified.
vice. R R
Some delay should be anticipated when Parts Color Cabinet’s Color
ordering these items. • Accessories are given in the last of the
electrical parts list.
6-1. MAIN SECTION
not supplied "
MG-101TC-188//C
#2
#1 7
#3
" # #5
FU601
#4
#6 #3
4
#4
not supplied
5
not supplied
3 #1 6
TU1
not supplied
2
#1
not supplied
#1
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 X-2178-981-1 PANEL ASSY, SUB FU601 1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
2 2-583-939-01 SCREW (+B 2X4) TU1 A-3220-961-B TUNER UNIT (TUX-032)
3 X-2179-691-1 LOCK ASSY #1 7-685-792-09 SCREW +PTT 2.6X6 (S)
4 2-348-996-01 SCREW (+PTT 2.6X6), GROUND POINT #2 7-685-790-01 SCREW +PTT 2.6X4 (S)
5 A-1444-814-A MAIN BOARD, COMPLETE #3 7-685-793-09 SCREW +PTT 2.6X8 (S)
6 2-345-298-01 PLATE (TU), GROUND #4 7-685-794-09 SCREW +PTT 2.6X10 (S)

7 1-833-974-31 CONNECTION CORD FOR AUTOMOBILE #5 7-685-134-19 SCREW +P 2.6X8 TYPE2 NON-SLIT
(POWER) #6 7-621-284-40 SCREW +P 2.6X10
29
CDX-GT272
6-2. FRONT PANEL SECTION

Note: Refer to the “Note for replacement of the front panel and
buttons” descried on page 4 when replacing the parts
marked with v.
61
60
RE901
61
59
58
not supplied 62
not supplied
(KEY board)
J901
not supplied
57
LCD901 not supplied
53
56
not supplied
53 52
not supplied
not supplied
not supplied
54
51
55
51 A-1444-815-A PANEL COMPLETE ASSY, FRONT 59 3-280-062-01 ILLUMINATOR (LCD)
52 X-2188-483-1 BUTTON ASSY (S) 60 3-280-041-01 PANEL, BACK
53 3-295-891-01 CUSHION (LEVER) 61 3-250-543-91 SCREW (+B P-TITE M2)
54 X-2188-482-1 PANEL (SV) ASSY, FRONT 62 X-2186-697-1 CASE ASSY (for FRONT PANEL)
55 X-2188-484-1 KNOB (SV) ASSY J901 1-820-624-11 SMALL TYPE JACK (VERTICAL) (AUX)
56 3-318-203-01 SCREW (B 1.7X6), TAPPING LCD901 1-802-616-11 DISPLAY PANEL, LIQUID CRYSTAL
57 2-349-626-01 SPRING (RELEASE) RE901 1-479-902-21 ENCODER, ROTARY (PUSH SELECT/VOLUME)
58 1-780-605-11 CONNECTOR (RUBBER)
30
CDX-GT272
6-3. CD MECHANISM SECTION

(MG-101TC-188//Q)
101
102
not supplied not supplied 103
#7
#7
105
not supplied
not supplied
not supplied
not supplied
not supplied
104
not supplied
not supplied
not supplied
not supplied
107
106
106
101 A-1283-704-A MECHANICAL BLOCK ASSY (08) 105 3-348-998-31 SCREW (M1.4X2.5), TAPPING, PAN
102 A-1283-705-A DAXEV08//C 106 3-352-758-31 SCREW (M1.7X2.5), TOOTHED LOCK
0 103 X-2149-672-1 SERVICE ASSY, OP (DAX-25A) 107 A-1201-631-A SERVO BOARD, COMPLETE
104 2-626-869-21 SCREW (M2X3), SERRATION #7 7-627-000-00 SCREW, PRECISION +P 1.7X2.2 TYPE3
31
CDX-GT272
SECTION 7
KEY
ELECTRICAL PARTS LIST
Note:
• Due to standardization, replacements in • RESISTORS
the parts list may be different from the All resistors are in ohms. When indicating parts by reference num-
parts specified in the diagrams or the com- METAL: Metal-film resistor. ber, please include the board name.
ponents used on the set. METAL OXIDE: Metal oxide-film resistor.
• -XX and -X mean standardized parts, so F: nonflammable The components identified by mark 0
they may have some difference from the • SEMICONDUCTORS or dotted line with mark 0 are critical for
original one. In each case, u: μ, for example: safety.
• Items marked “*” are not stocked since uA. . : μA. . , uPA. . , μPA. . , Replace only with part number specified.
they are seldom required for routine ser- uPB. . : μPB. . , uPC. . , μPC. . ,
vice. uPD. . : μPD. .
Some delay should be anticipated when
ordering these items.
• CAPACITORS
uF: μF
• COILS
uH: μH
KEY BOARD < LIQUID CRYSTAL DISPLAY >
**********
LCD901 1-802-616-11 DISPLAY PANEL, LIQUID CRYSTAL
1-780-605-11 CONNECTOR (RUBBER)
3-280-062-01 ILLUMINATOR (LCD) < DIODE >
< CAPACITOR > LED931 6-501-339-01 LED NESW505CT-AST (LCD BACK LIGHT)
LED941 8-719-053-09 LED SML-310VTT86 (Z)
C901 1-165-908-11 CERAMIC CHIP 1uF 10% 10V LED942 8-719-053-09 LED SML-310VTT86 (OFF)
C971 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V LED951 8-719-053-09 LED SML-310VTT86 (RING ILLUMINATION)
C983 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
LED954 8-719-053-09 LED SML-310VTT86 (RING ILLUMINATION)
C987 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V < SWITCH >
C988 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
LSW901 1-786-805-13 SWITCH, TACTILE (WITH LED)
< CONNECTOR > (>SEEK+)
LSW902 1-786-805-13 SWITCH, TACTILE (WITH LED)
CN901 1-819-758-12 PLUG, CONNECTOR 15P (.SEEK–)
LSW903 1-786-805-13 SWITCH, TACTILE (WITH LED) (1/ALBUM –)
< DIODE > LSW904 1-786-805-13 SWITCH, TACTILE (WITH LED) (2/ALBUM +)
LSW905 1-786-805-13 SWITCH, TACTILE (WITH LED) (3/REP)
D901 6-501-170-01 DIODE UDZW-TE17-6.8B
D902 6-501-170-01 DIODE UDZW-TE17-6.8B LSW906 1-786-805-13 SWITCH, TACTILE (WITH LED) (4/SHUF)
D903 6-501-180-01 DIODE UDZW-TE17-18B LSW907 1-786-805-13 SWITCH, TACTILE (WITH LED) (5)
D981 6-501-167-01 DIODE UDZW-TE17-5.1B LSW908 1-786-805-13 SWITCH, TACTILE (WITH LED) (6/PAUSE)
D982 6-501-193-01 DIODE 1SS355WTE-17 LSW909 1-786-805-13 SWITCH, TACTILE (WITH LED) (EQ3)
LSW910 1-786-805-13 SWITCH, TACTILE (WITH LED) (DSPL/SCRL)
D991 6-501-170-01 DIODE UDZW-TE17-6.8B
D992 6-501-170-01 DIODE UDZW-TE17-6.8B < TRANSISTOR >
D993 6-501-170-01 DIODE UDZW-TE17-6.8B
D994 6-501-170-01 DIODE UDZW-TE17-6.8B Q931 8-729-027-44 TRANSISTOR DTC114TKA-T146
D998 1-216-295-11 SHORT CHIP 0 Q932 6-551-444-01 TRANSISTOR RT1N436C-TP-1
< FERRITE BEAD > < RESISTOR >
FB901 1-414-595-11 INDUCTOR, FERRITE BEAD R901 1-216-820-11 METAL CHIP 820 5% 1/10W
FB902 1-414-595-11 INDUCTOR, FERRITE BEAD R902 1-216-821-11 METAL CHIP 1K 5% 1/10W
FB904 1-500-245-11 INDUCTOR, FERRITE BEAD R904 1-216-822-11 METAL CHIP 1.2K 5% 1/10W
R905 1-216-823-11 METAL CHIP 1.5K 5% 1/10W
< IC >
R906 1-216-820-11 METAL CHIP 820 5% 1/10W
IC901 6-710-047-01 IC LC75836WH-US-E R907 1-216-821-11 METAL CHIP 1K 5% 1/10W
IC971 6-600-629-01 IC RS-470 (IR) R908 1-216-821-11 METAL CHIP 1K 5% 1/10W
R909 1-216-822-11 METAL CHIP 1.2K 5% 1/10W
< JACK > R910 1-216-823-11 METAL CHIP 1.5K 5% 1/10W
J901 1-820-624-11 SMALL TYPE JACK (VERTICAL) (AUX) R911 1-216-824-11 METAL CHIP 1.8K 5% 1/10W
R912 1-216-825-11 METAL CHIP 2.2K 5% 1/10W
R913 1-216-827-11 METAL CHIP 3.3K 5% 1/10W
R921 1-216-295-11 SHORT CHIP 0
32
CDX-GT272
KEY MAIN
R922 1-216-295-11 SHORT CHIP 0 C153 1-126-961-11 ELECT 2.2uF 20% 50V
R931 1-216-812-11 METAL CHIP 180 5% 1/10W C154 1-137-712-11 CERAMIC CHIP 0.0047uF 20% 250V
R934 1-216-822-11 METAL CHIP 1.2K 5% 1/10W C301 1-124-248-00 ELECT 22uF 20% 25V
R941 1-216-813-11 METAL CHIP 220 5% 1/10W C302 1-124-584-00 ELECT 100uF 20% 10V
R974 1-216-809-11 METAL CHIP 100 5% 1/10W C432 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
R975 1-216-809-11 METAL CHIP 100 5% 1/10W C434 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
R981 1-216-811-11 METAL CHIP 150 5% 1/10W C444 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
R984 1-216-821-11 METAL CHIP 1K 5% 1/10W C451 1-126-964-11 ELECT 10uF 20% 50V
R985 1-216-821-11 METAL CHIP 1K 5% 1/10W C452 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
R986 1-216-821-11 METAL CHIP 1K 5% 1/10W C454 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
R987 1-216-857-11 METAL CHIP 1M 5% 1/10W C455 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
R988 1-216-840-11 METAL CHIP 39K 5% 1/10W C461 1-126-964-11 ELECT 10uF 20% 50V
R992 1-216-864-11 SHORT CHIP 0 C462 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
C464 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
< ROTARY ENCODER >
C465 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
RE901 1-479-902-21 ENCODER, ROTARY (PUSH SELECT/VOLUME) C471 1-126-964-11 ELECT 10uF 20% 50V
C479 1-124-589-11 ELECT 47uF 20% 16V
< SWITCH > C481 1-126-964-11 ELECT 10uF 20% 50V
S901 1-786-653-11 SWITCH, TACTILE (Z)
S902 1-786-653-11 SWITCH, TACTILE (OFF) C503 1-124-584-00 ELECT 100uF 20% 10V
S903 1-786-653-11 SWITCH, TACTILE (SOURCE) C504 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
S904 1-786-653-11 SWITCH, TACTILE (MODE) C507 1-162-917-11 CERAMIC CHIP 15PF 5% 50V
************************************************************* C508 1-162-916-11 CERAMIC CHIP 12PF 5% 50V
A-1444-814-A MAIN BOARD, COMPLETE
********************* C510 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C511 1-124-584-00 ELECT 100uF 20% 10V
7-621-284-40 SCREW +P 2.6X10 C512 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
7-685-134-19 SCREW +P 2.6X8 TYPE2 NON-SLIT C513 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
7-685-794-09 SCREW +PTT 2.6X10 (S) C514 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
< CAPACITOR > C516 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C4 1-126-947-11 ELECT 47uF 20% 35V C522 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C5 1-126-947-11 ELECT 47uF 20% 35V C523 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C6 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V C550 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C8 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V C601 1-112-302-11 ELECT 3300uF 20% 16V
C602 1-165-319-11 CERAMIC CHIP 0.1uF 50V
C151 1-126-960-11 ELECT 1uF 20% 50V C622 1-126-926-11 ELECT 1000uF 20% 10V
C152 1-126-960-11 ELECT 1uF 20% 50V
33
CDX-GT272
MAIN
C623 1-126-926-11 ELECT 1000uF 20% 10V < IC >
C631 1-126-160-11 ELECT 1uF 20% 50V
C750 1-115-340-11 CERAMIC CHIP 0.22uF 10% 25V IC401 6-710-065-01 IC BD3442FS-E2
C751 1-115-340-11 CERAMIC CHIP 0.22uF 10% 25V IC501 6-807-945-01 IC MB90F045PF-G-9073-SPE1
C753 1-128-551-11 ELECT 22uF 20% 63V IC602 6-709-458-01 IC XC61CN2802NR
IC750 6-705-360-02 IC TDA8588BJ/N2/R1
C754 1-124-257-00 ELECT 2.2uF 20% 50V
C755 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V < JACK >
C756 1-216-864-11 SHORT CHIP 0
C758 1-124-261-00 ELECT 10uF 20% 50V J1 1-815-185-13 JACK (ANTENNA)
C763 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V J330 1-774-699-12 JACK, PIN 4P (AUDIO OUT FRONT/REAR)
C764 1-115-340-11 CERAMIC CHIP 0.22uF 10% 25V < JUMPER RESISTOR >
C769 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V JC504 1-216-864-11 SHORT CHIP 0
JC681 1-216-864-11 SHORT CHIP 0
JC755 1-216-296-11 SHORT CHIP 0
< CONNECTOR >
< COIL >
CN601 1-774-701-21 PIN, CONNECTOR 16P
CN701 1-819-773-14 SOCKET, CONNECTOR 15P L1 1-469-844-11 INDUCTOR 2.2uH
CNP301 1-820-611-11 CONNECTOR, BOARD TO BOARD 28P L151 1-216-295-11 SHORT CHIP 0
L601 1-456-617-11 COIL, CHOKE
< DIODE >
< TRANSISTOR >
D1 6-501-734-01 DIODE MAZ8056GMLS0
D153 6-501-170-01 DIODE UDZW-TE17-6.8B Q1 6-551-431-01 TRANSISTOR 2SC6027T100-QR
D479 6-501-193-01 DIODE 1SS355WTE-17 Q431 6-551-856-01 TRANSISTOR LTC614TKFP8T146
D502 6-502-131-01 DIODE LRB751V-40T1G Q441 6-551-856-01 TRANSISTOR LTC614TKFP8T146
D503 6-501-193-01 DIODE 1SS355WTE-17 Q451 8-729-027-44 TRANSISTOR DTC114TKA-T146
Q461 8-729-027-44 TRANSISTOR DTC114TKA-T146
D510 6-501-656-01 DIODE LBAT54ALT1G
D511 6-500-335-01 DIODE MC2838-T112-1 Q471 6-551-856-01 TRANSISTOR LTC614TKFP8T146
D512 6-501-654-01 DIODE LBAT54CLT1G Q478 8-729-027-43 TRANSISTOR DTC114EKA-T146
D580 6-501-747-01 DIODE MAZ8075GMLS0 Q479 8-729-027-23 TRANSISTOR DTA114EKA-T146
D581 6-501-782-01 DIODE MAZ8180GMLS0 Q481 6-551-856-01 TRANSISTOR LTC614TKFP8T146
Q580 8-729-027-43 TRANSISTOR DTC114EKA-T146
D601 6-501-571-01 DIODE 1N5404-C311-3
D617 6-501-782-01 DIODE MAZ8180GMLS0 Q581 8-729-038-28 TRANSISTOR RT1N441C-TP-1
D704 6-501-743-01 DIODE MAZ8068GMLS0 Q582 8-729-620-07 TRANSISTOR 2SC3052EF-T1-LEF
D719 6-501-782-01 DIODE MAZ8180GMLS0 Q631 8-729-620-07 TRANSISTOR 2SC3052EF-T1-LEF
D751 6-501-362-01 DIODE 1A4-TA26 Q664 8-729-027-23 TRANSISTOR DTA114EKA-T146
D752 6-501-362-01 DIODE 1A4-TA26 < RESISTOR >

D753 6-501-362-01 DIODE 1A4-TA26
D754 6-501-362-01 DIODE 1A4-TA26 R1 1-216-821-11 METAL CHIP 1K 5% 1/10W
D755 6-501-362-01 DIODE 1A4-TA26 R2 1-414-595-11 INDUCTOR, FERRITE BEAD
R4 1-216-839-11 METAL CHIP 33K 5% 1/10W
D758 6-501-362-01 DIODE 1A4-TA26
R13 1-414-595-11 INDUCTOR, FERRITE BEAD
D762 6-501-362-01 DIODE 1A4-TA26 R151 1-216-817-11 METAL CHIP 470 5% 1/10W
< FERRITE BEAD > R152 1-216-817-11 METAL CHIP 470 5% 1/10W
R153 1-216-834-11 METAL CHIP 12K 5% 1/10W
FB604 1-500-245-11 INDUCTOR, FERRITE BEAD R155 1-216-825-11 METAL CHIP 2.2K 5% 1/10W
R301 1-216-821-11 METAL CHIP 1K 5% 1/10W
< FUSE >
R302 1-216-821-11 METAL CHIP 1K 5% 1/10W
FU601 1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A R401 1-216-797-11 METAL CHIP 10 5% 1/10W
R412 1-218-883-11 METAL CHIP 33K 0.5% 1/10W
R413 1-216-864-11 SHORT CHIP 0
34
CDX-GT272
MAIN SERVO
R414 1-216-864-11 SHORT CHIP 0 R570 1-216-817-11 METAL CHIP 470 5% 1/10W
R431 1-216-813-11 METAL CHIP 220 5% 1/10W R572 1-216-845-11 METAL CHIP 100K 5% 1/10W
R432 1-216-833-11 METAL CHIP 10K 5% 1/10W R574 1-216-845-11 METAL CHIP 100K 5% 1/10W
R471 1-216-813-11 METAL CHIP 220 5% 1/10W R631 1-249-425-11 CARBON 4.7K 5% 1/4W
R481 1-216-813-11 METAL CHIP 220 5% 1/10W R634 1-216-829-11 METAL CHIP 4.7K 5% 1/10W
R504 1-218-871-11 METAL CHIP 10K 0.5% 1/10W R663 1-216-821-11 METAL CHIP 1K 5% 1/10W
R505 1-218-871-11 METAL CHIP 10K 0.5% 1/10W R664 1-216-833-11 METAL CHIP 10K 5% 1/10W
R506 1-216-845-11 METAL CHIP 100K 5% 1/10W R671 1-216-809-11 METAL CHIP 100 5% 1/10W
R507 1-216-845-11 METAL CHIP 100K 5% 1/10W R672 1-216-809-11 METAL CHIP 100 5% 1/10W
R509 1-216-813-11 METAL CHIP 220 5% 1/10W R673 1-218-871-11 METAL CHIP 10K 0.5% 1/10W
R521 1-216-825-11 METAL CHIP 2.2K 5% 1/10W R752 1-216-811-11 METAL CHIP 150 5% 1/10W
R522 1-216-825-11 METAL CHIP 2.2K 5% 1/10W R756 1-216-841-11 METAL CHIP 47K 5% 1/10W
R524 1-216-845-11 METAL CHIP 100K 5% 1/10W < TUNER UNIT >
R526 1-216-845-11 METAL CHIP 100K 5% 1/10W
R527 1-216-845-11 METAL CHIP 100K 5% 1/10W TU1 A-3220-961-B TUNER UNIT (TUX-032)
R528 1-216-845-11 METAL CHIP 100K 5% 1/10W
R529 1-216-821-11 METAL CHIP 1K 5% 1/10W < VIBRATOR >
R531 1-216-845-11 METAL CHIP 100K 5% 1/10W X501 1-813-524-21 VIBRATOR, CERAMIC (18.432MHz)
R532 1-216-845-11 METAL CHIP 100K 5% 1/10W X502 1-767-317-11 VIBRATOR, CRYSTAL (32.768kHz)
R533 1-216-845-11 METAL CHIP 100K 5% 1/10W *************************************************************
R534 1-216-833-11 METAL CHIP 10K 5% 1/10W
R535 1-216-833-11 METAL CHIP 10K 5% 1/10W A-1201-631-A
SERVO BOARD, COMPLETE
**********************
R536 1-216-833-11 METAL CHIP 10K 5% 1/10W *************************************************************
R537 1-216-845-11 METAL CHIP 100K 5% 1/10W
R539 1-216-845-11 METAL CHIP 100K 5% 1/10W MISCELLANEOUS
R540 1-216-845-11 METAL CHIP 100K 5% 1/10W **************
R541 1-216-845-11 METAL CHIP 100K 5% 1/10W
7 1-833-974-31 CONNECTION CORD FOR AUTOMOBILE
R542 1-216-821-11 METAL CHIP 1K 5% 1/10W (POWER)
R543 1-216-821-11 METAL CHIP 1K 5% 1/10W 58 1-780-605-11 CONNECTOR (RUBBER)
R544 1-216-821-11 METAL CHIP 1K 5% 1/10W 0 103 X-2149-672-1 SERVICE ASSY, OP (DAX-25A)
R547 1-216-821-11 METAL CHIP 1K 5% 1/10W FU601 1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
R548 1-216-845-11 METAL CHIP 100K 5% 1/10W J901 1-820-624-11 SMALL TYPE JACK (VERTICAL) (AUX)
R549 1-216-845-11 METAL CHIP 100K 5% 1/10W LCD901 1-802-616-11 DISPLAY PANEL, LIQUID CRYSTAL
R556 1-216-833-11 METAL CHIP 10K 5% 1/10W RE901 1-479-902-21 ENCODER, ROTARY (PUSH SELECT/VOLUME)
R557 1-216-825-11 METAL CHIP 2.2K 5% 1/10W *************************************************************
R558 1-216-821-11 METAL CHIP 1K 5% 1/10W
R561 1-216-845-11 METAL CHIP 100K 5% 1/10W
R563 1-216-845-11 METAL CHIP 100K 5% 1/10W

R565 1-216-845-11 METAL CHIP 100K 5% 1/10W
R566 1-216-845-11 METAL CHIP 100K 5% 1/10W
R567 1-216-845-11 METAL CHIP 100K 5% 1/10W
R568 1-216-821-11 METAL CHIP 1K 5% 1/10W
35
CDX-GT272
Ref. No. Part No. Description Remark

ACCESSORIES
************
1-479-077-13 REMOTE COMMANDER (RM-X151)

1-828-479-41 CORD, CONNECTION 2P (AUX)
2-548-729-01 LID, BATTERY CASE (for RM-X151)
3-287-412-11 MANUAL, INSTRUCTION (ENGLISH,SPANISH)
3-287-413-11 MANUAL, INSTRUCTION, INSTALL (ENGLISH,
SPANISH)
X-2186-697-1 CASE ASSY (for FRONT PANEL)

*************************************************************
PARTS FOR INSTALLATION AND CONNECTIONS

**************************************
151 X-2179-430-1 FRAME ASSY, FITTING

152 3-280-059-01 COLLAR
153 3-246-011-01 KEY (FRAME)
154 A-1082-993-A SCREW ASSY (BS4), FITTING
155 3-259-776-01 SCREW (+K 5X8 TP)
156 1-833-974-31 CONNECTION CORD FOR AUTOMOBILE

(POWER)
151 152 153
×2
154
155
×4
156
36
CDX-GT272
MEMO
37
CDX-GT272
REVISION HISTORY
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1.0 2008.02 New

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CDX-GT272

SERVICE MANUAL E Model

• The tuner and CD sections have no adjustments.

FM/AM COMPACT DISC PLAYER

This compact disc player is classified as a CLASS 1 LASER

YDES-18 (Part No. 3-702-101-01)

: LEAD FREE MARK

SAFETY-RELATED COMPONET WARNING!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE

1. SERVICE NOTE ..................................................... 3 5. DIAGRAMS

4. DIAGNOSIS FUNCTION ..................................... 14

• Connect the MAIN board (CNP301) and the SERVO board

NOTE FOR REPLACEMENT OF THE FRONT PANEL

• PANEL (SV) ASSY

please apply the HANARL SFL-9A

Location of controls and basic operations

(3): REP page 8 < ,.

AUDIO OUT FRONT

* AUDIO OUT SUB/REAR

AUDIO OUT FRONT

AUDIO OUT REAR*

* AUDIO OUT SUB/REAR

*1 RCA pin cord (not supplied)

*1 Cable con terminales RCA (no suministrado)

AUDIO OUT Fuse (10 A)

Connection diagram Diagrama de conexión

3-1. SUB PANEL ASSY

3-2. CD MECHANISM BLOCK

3-3. MAIN BOARD 3-4. SERVO BOARD

3-5. CHASSIS (T) SUB ASSY

3-6. ROLLER ARM ASSY

3-7. CHASSIS (OP) ASSY

3-8. CHUCKING ARM SUB ASSY

3-9. SLED MOTOR ASSY

3-10. OPTICAL PICK-UP SECTION

3-11. OPTICAL PICK-UP

3-1. SUB PANEL ASSY

 sub panel assy

3-2. CD MECHANISM BLOCK

3-3. MAIN BOARD

3-4. SERVO BOARD

3-5. CHASSIS (T) SUB ASSY

3-6. ROLLER ARM ASSY

3-7. CHASSIS (OP) ASSY

 chassis (OP) assy

3-8. CHUCKING ARM SUB ASSY

Note: Be careful not to touch the turn table.

3-9. SLED MOTOR ASSY

Note for Assembly

sled motor assy

Note: Take care to prevent the chassis from being bent

3-10. OPTICAL PICK-UP SECTION

Note: Be careful not to touch the lens and hologram

3-11. OPTICAL PICK-UP

Notes for Assembly

3. Initial display in the Diag display mode.

OFFSET/FAILURE error display

No. of connected units history 3 display

sub panel assy

chassis (OP) assy

CD error info history 1 (latest) 99999

IC501 JE (OSC OUT)