1
Ver. 1.2 2006. 03
Model Name Using Similar Mechanism
NEW
CD Drive Mechanism Type
MG-611WA-186//C
MG-611WA-186//Q
Optical Pick-up Name
KSS1000E
SERVICE MANUAL
US Model
Canadian Model
CDX-GT20W/GT200
AEP Model
UK Model
CDX-GT200/GT200E/GT200S
E Model
Chinese Model
CDX-GT250S
CDX-GT20W/GT200/GT200E/
GT200S/GT250S
SPECIFICATIONS
· The tuner and CD sections have no adjustments.
Sony Corporation
eVehicle Division
Published by Sony Techno Create Corporation
9-879-862-03
2006C04-1
© 2006. 03
FM/MW/LW COMPACT DISC PLAYER
CDX-GT200: AEP,UK/GT200E/GT200S
FM/AM COMPACT DISC PLAYER
CDX-GT20W/GT200: US,CND/GT250S
CD Player section
Signal-to-noise ratio:
120 dB
Frequency response:
10 20,000 Hz
Wow and flutter:
Below measurable limit
Tuner section
FM
Tuning range:
CDX-GT20W/GT200 (US, Canadian):
87.5 107.9 MHz
CDX-GT200 (AEP, UK)/GT200E/GT200S:
87.5 108.0 MHz
CDX-GT250S:
87.5 108.0 MHz (at 50 kHz step)
87.5 107.9 MHz (at 200 kHz step)
FM tuning interval (CDX-GT250S only):
50 kHz/200 kHz switchable
Antenna terminal:
External antenna connector
Intermediate frequency:
10.7 MHz/450 kHz
Usable sensitivity:
9 dBf
Selectivity:
75 dB at 400 kHz
Signal-to-noise ratio:
67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz:
0.5 % (stereo), 0.3 % (mono)
Separation:
35 dB at 1 kHz
Frequency response:
30 15,000 Hz
AM (CDX-GT20W/GT200 (US, Canadian)/GT250S)
Tuning range:
CDX-GT20W/GT200 (US, Canadian):
530 1,710 kHz
CDX-GT250S:
531 1,602 kHz (at 9 kHz step)
530 1,710 kHz (at 10 kHz step)
AM tuning interval (CDX-GT250S only):
9 kHz/10 kHz switchable
Antenna terminal:
External antenna connector
Intermediate frequency:
10.7 MHz/450 kHz
Sensitivity:
30 µV
MW/LW (CDX-GT200 (AEP, UK)/GT200E/GT200S)
Tuning range:
MW: 531 1,602 kHz
LW: 153 279 kHz
Aerial terminal:
External aerial connector
Intermediate frequency:
10.7 MHz/450 kHz
Sensitivity:
MW: 30 µV, LW: 40 µV
Power amplifier section
Outputs:
Speaker outputs (sure seal connectors)
Speaker impedance:
4 8 ohms
Maximum power output: CDX-GT20W/GT200 (US, Canadian)/GT250S:
52 W
× 4 (at 4 ohms)
CDX-GT200 (AEP, UK)/GT200E/GT200S:
50 W
× 4 (at 4 ohms)
Continued on next page
AUDIO POWER SPECIFICATIONS (US MODEL)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23.2 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 5% total harmonic distortion.
2
CDX-GT20W/GT200/GT200E/GT200S/GT250S
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.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
Notes on Chip Component Replacement
·Never reuse a disconnected chip component.
· Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SERVICE NOTES
This label is located on the bottom of the chassis.
Chinese model
TEST DISCS
This set can playback CD-R and CD-ROM discs. The following
test discs should be used to check the capability:
CD-R test disc TCD-R082LMT (Part No. J-2502-063-1)
CD-RW test disc TCD-W082L (Part No. J-2502-063-2)
optical pick-up
semi-fixed resistor
CAUTION
Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.
Case of CDX-GT200: AEP, UK/GT200E/GT200S/GT250S
This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.
AEP, UK, E model
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
General
Outputs:
Audio outputs terminal (sub/rear switchable)
Power antenna relay control terminal
Power amplifier control terminal
Inputs:
Antenna input terminal
AUX input jack (stereo mini jack)
Tone controls:
Low: ±10 dB at 60 Hz (XPLOD)
Mid: ±10 dB at 1 kHz (XPLOD)
High: ±10 dB at 10 kHz (XPLOD)
Power requirements:
12 V DC car battery (negative ground)
Dimensions:
Approx. 178
× 50 × 179 mm
(7 1/8
× 2 × 7 1/8 in) (w/h/d)
Mounting dimensions:
Approx. 182
× 53 × 161 mm
(7 1/4
× 2 1/8 × 6 3/8 in) (w/h/d)
Mass:
Approx. 1.2 kg (2 lb 11 oz)
Supplied accessories:
Parts for installation and connections (1 set)
Card remote commander: RM-X151 (CDX-GT20W: US/
GT200: US, CND/GT250S)
Design and specifications are subject to change
without notice.
Us and foreign patents licensed from Dolby
Laboratories.
Ver. 1.2
3
CDX-GT20W/GT200/GT200E/GT200S/GT250S
z
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
· Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
· Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
· Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
SERVO BOARD
CN2
MAIN BOARD
CNP301
J-2502-076-1
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).
· CD playback
You can play CD-DA (also containing CD TEXT*), CD-R/CD-
RW (MP3/WMA files also containing Multi Session and ATRAC
CD (ATRAC3 and ATRAC3plus format).
Type of discs
Label on the disc
CD-DA
MP3
WMA
ATRAC CD
*A CD TEXT disc is a CD-DA that includes information such as
disc, artist and track name.
4
CDX-GT20W/GT200/GT200E/GT200S/GT250S
TABLE OF CONTENTS
1. GENERAL
Location of controls and basic operations ............................... 5
Connections ............................................................................. 7
2. DISASSEMBLY
2-1. Sub Panel Assy .................................................................. 10
2-2. CD Mechanism Block ....................................................... 10
2-3. Main Board ....................................................................... 11
2-4. Chassis (T) Sub Assy ........................................................ 11
2-5. Roller Arm Assy ................................................................ 12
2-6. Chassis (OP) Assy ............................................................. 12
2-7. Optical Pick-up ................................................................. 13
2-8. SL Motor Assy (M902) ..................................................... 13
2-9. LE Motor Assy (M903) ..................................................... 14
2-10. Servo Board ....................................................................... 14
3. DIAGRAMS
3-1. Block Diagram CD Section ......................................... 15
3-2. Block Diagram Main Section ...................................... 16
3-3. Block Diagram Display Section .................................. 17
3-4. Circuit Boards Location .................................................... 17
3-5. Printed Wiring Boards CD Mechanism Section ......... 19
3-6. Schematic Diagram CD Mechanism Section (1/2) ..... 20
3-7. Schematic Diagram CD Mechanism Section (2/2) ..... 21
3-8. Printed Wiring Board Main Section ............................ 22
3-9. Schematic Diagram Main Section (1/3) ...................... 23
3-10. Schematic Diagram Main Section (2/3) ...................... 24
3-11. Schematic Diagram Main Section (3/3) ...................... 25
3-12. Printed Wiring Boards Key Section ............................ 26
3-13. Schematic Diagram Key Section ................................ 27
4. EXPLODED VIEWS
4-1. Main Section ..................................................................... 34
4-2. Front Panel Section ........................................................... 35
4-3. CD Mechanism Section (1) (MG-611WA-186//C) ........... 36
4-4. CD Mechanism Section (2) (MG-611WA-186//C) ........... 37
4-5. CD Mechanism Section (3) (MG-611WA-186//C) ........... 38
4-6. CD Mechanism Section (4) (MG-611WA-186//C) ........... 39
5. ELECTRICAL PARTS LIST ........................................ 40
5
CDX-GT20W/GT200/GT200E/GT200S/GT250S
SECTION 1
GENERAL
This section is extracted
from instruction manual.
· CDX-GT20W/GT200: US, Canadian
· CDX-GT200: AEP, UK/GT200S
· CDX-GT200E
6
Location of controls and basic operations
Main unit
Card remote commander
RM-X151 (CDX-GT200 only)
Refer to the pages listed for details.
A OFF button
To power off; stop the source.
B Volume control dial/select button 9
To adjust volume (rotate); select setup items
(press and rotate).
C EQ3 (equalizer) button 9
To select an equalizer type (XPLOD,
VOCAL, CLUB, JAZZ, NEW AGE, ROCK,
CUSTOM or OFF).
D Disc slot
To insert the disc (label side up), playback
starts.
E Display window
F Z (eject) button
To eject the disc.
G SCRL (scroll) button 8
To scroll the display item.
H DSPL (display)/DIM (dimmer) button
4, 8
To change display items (press); change the
display brightness (press and hold).
I GP*1/ALBM*2 +/ buttons
To skip groups/albums (press); skip groups/
albums continuously (press and hold).
J
(front panel release) button 4
CDX-GT200
CDX-GT20W
OFF
DSPL
SCRL
SEL
SOURCE
MODE
13
2
46
5
ATT
VOL
+
+
7
K SEEK /+ buttons
CD:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
L SOURCE button
To power on; change the source (Radio/CD/
AUX).
M BTM button 8
To start the BTM function (press and hold).
N MODE button 8
To select the radio band (FM/AM).
O RESET button (located behind the front
panel) 4
P Number buttons
CD:
(3): REP 8
(4): SHUF 8
(6): PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
Q SENS button
To improve weak reception: LOCAL/
MONO.
R Receptor for the card remote
commander 10
S AUX input jack 10
To connect a portable audio device.
The following buttons on the card remote
commander have also different buttons/functions
from the unit.
w; < (.)/, (>) buttons
CD:
To control CD/Radio, the same as
(SEEK) /+ on the unit.
wa VOL (volume) +/ button
To adjust volume.
ws ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
wd SEL (select) button
To select items.
wf M (+)/m () buttons
To control CD, the same as (GP/ALBM) /+
on the unit.
wg Number buttons
To receive stored stations (press); store
stations (press and hold).
*1 When an ATRAC CD is played.
*2 When an MP3/WMA is played.
Note
If the unit is turned off and the display disappears, it
cannot be operated with the card remote commander
unless (SOURCE) on the unit is pressed, or a disc is
inserted to activate the unit first.
Tip
For details on how to replace the battery, see
"Replacing the lithium battery" on page 12.
5
Location of controls and basic operations
Main unit
Refer to the pages listed for details.
A OFF button
To power off; stop the source.
B Volume control dial/select button 9
To adjust volume (rotate); select setup items
(press and rotate).
C EQ3 (equalizer) button 9
To select an equalizer type (XPLOD,
VOCAL, CLUB, JAZZ, NEW AGE, ROCK,
CUSTOM or OFF).
D Disc slot
To insert the disc (label side up), playback
starts.
E Display window
F Z (eject) button
To eject the disc.
G AF (Alternative Frequencies)/TA
(Traffic Announcement) button 7
To set AF and TA/TP in RDS.
H DSPL (display)/DIM (dimmer) button
4, 6
To change display items (press); change the
display brightness (press and hold).
I GP*1/ALBM*2 +/ buttons
To skip groups/albums (press); skip groups/
albums continuously (press and hold).
J
(front panel release) button 4
K SEEK /+ buttons
CD:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
L SOURCE button
To power on; change the source (Radio/CD/
AUX).
M PTY (Programme Type) button 8
To select PTY in RDS.
N MODE button 6
To select the radio band (FM/MW/LW).
O RESET button (located behind the front
panel) 4
P Number buttons
CD:
(3): REP 6
(4): SHUF 6
(6): PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
Q SENS/BTM button
To improve weak reception: LOCAL/MONO
(press); start the BTM function (press and
hold).
R Receptor for the card remote
commander 10
S AUX input jack 10
To connect a portable audio device.
*1 When an ATRAC CD is played.
*2 When an MP3/WMA is played.
CDX-GT200S
CDX-GT200
5
Location of controls and basic operations
Main unit
Refer to the pages listed for details.
A OFF button
To power off; stop the source.
B Volume control dial/select button 7
To adjust volume (rotate); select setup items
(press and rotate).
C EQ3 (equalizer) button 7
To select an equalizer type (XPLOD,
VOCAL, CLUB, JAZZ, NEW AGE, ROCK,
CUSTOM or OFF).
D Disc slot
To insert the disc (label side up), playback
starts.
E Display window
F Z (eject) button
To eject the disc.
G SCRL (scroll) button 6
To scroll the display item.
H DSPL (display)/DIM (dimmer) button
4, 6
To change display items (press); change the
display brightness (press and hold).
I GP*1/ALBM*2 +/ buttons
To skip groups/albums (press); skip groups/
albums continuously (press and hold).
J
(front panel release) button 4
K SEEK /+ buttons
CD:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
L SOURCE button
To power on; change the source (Radio/CD/
AUX).
M BTM button 6
To start the BTM function (press and hold).
N MODE button 6
To select the radio band (FM/MW/LW).
O RESET button (located behind the front
panel) 4
P Number buttons
CD:
(3): REP 6
(4): SHUF 6
(6): PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
Q SENS button
To improve weak reception: LOCAL/
MONO.
R Receptor for the card remote
commander 8
S AUX input jack 8
To connect a portable audio device.
*1 When an ATRAC CD is played.
*2 When an MP3/WMA is played.
CDX-GT200E