1
Ver. 1.0 2005. 12
Model Name Using Similar Mechanism
CDX-A250/A250EE
CD Drive Mechanism Type
MG-611WA-186//Q
Optical Pick-up Name
KSS1000E
SERVICE MANUAL
US Model
CDX-GT50W/GT500
Canadian Model
AEP Model
UK Model
CDX-GT500
E Model
CDX-GT550
East European Model
CDX-GT500EE
Chinese Model
CDX-GT550
CDX-GT50W/GT500/
GT500EE/GT550
SPECIFICATIONS
· The tuner and CD sections have no adjustments.
Sony Corporation
eVehicle Division
Published by Sony Engineering Corporation
9-887-003-01
2005L04-1
© 2005. 12
FM/MW/LW COMPACT DISC PLAYER
CDX-GT500: AEP, UK MODEL
FM/AM COMPACT DISC PLAYER
CDX-GT50W/GT500: US, Canadian MODEL/GT500EE/GT550
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.
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-GT50W/GT500: US Canadian model
87.5 107.9 MHz
CDX-GT500: AEP, UK model
87.5 108.0 MHz
CDX-GT500EE:
FM1/FM2: 87.5 108.0 MHz (at 50 kHz step)
FM3: 65 74 MHz (at 30 kHz step)
CDX-GT550:
87.5 108.0 MHz (at 50 kHz step)
87.5 107.9 MHz (at 200 kHz step)
FM tuning interval (CDX-GT550 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-GT50W/GT500: US, Canadian model/GT500EE/GT550)
Tuning range:
CDX-GT50W/GT500: US, Canadian model:
530 1,710 kHz
CDX-GT500EE:
531 1,602 kHz
CDX-GT550:
531 1,602 kHz (at 9 kHz step)
530 1,710 kHz (at 10 kHz step)
AM tuning interval (CDX-GT550 only):
9 kHz/10 kHz switchable
Antenna terminal:
External antenna connector
Intermediate frequency:
10.7 MHz/450 kHz
Sensitivity:
30 µV
MW/LW (CDX-GT500: AEP, UK model)
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
Continued on next page
Photo: CDX-GT500
2
CDX-GT50W/GT500/GT500EE/GT550
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.
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.
(GT500: AEP/UK/GT500EE/GT550)
This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.
Power amplifier section
Outputs:
Speaker outputs (sure seal connectors)
Speaker impedance:
4 8 ohms
Maximum power output: 52 W
× 4 (at 4 ohms)
General
Outputs:
Audio outputs terminal (front/rear)
Subwoofer output terminal (mono)
Power antenna relay control terminal
Power amplifier control terminal
Inputs:
Telephone ATT control terminal
Illumination control terminal
BUS control input terminal
BUS audio input/AUX IN terminal
Remote controller input terminal
Antenna input terminal
Tone controls:
Low: ±10 dB at 60 Hz or 100 Hz (XPLOD)
Mid: ±10 dB at 500 Hz or 1 kHz (XPLOD)
High: ±10 dB at 10 kHz or 12.5 kHz (XPLOD)
Power requirements:
12 V DC car battery (negative ground)
Dimensions:
Approx. 178
× 50 × 181 mm
(7 1/8
× 2 × 7 1/4 in) (w/h/d)
Mounting dimensions:
Approx. 182
× 53 × 162 mm
(7 1/4
× 2 1/8 × 6 1/2 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
Design and specifications are subject to change
without notice.
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.
Except Chinese model
Chinese model
3
CDX-GT50W/GT500/GT500EE/GT550
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
CN400
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 (CN400) 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-GT50W/GT500/GT500EE/GT550
TABLE OF CONTENTS
1. GENERAL
Location of controls and basic operations ............................... 5
Connections ............................................................................. 7
2. DISASSEMBLY
2-1. Sub (FL) Panel Assy ......................................................... 12
2-2. CD Mechanism Block ....................................................... 12
2-3. Main Board ....................................................................... 13
2-4. Chassis (T) Sub Assy ........................................................ 13
2-5. Roller Arm Assy ................................................................ 14
2-6. Chassis (OP) Assy ............................................................. 14
2-7. Optical Pick-up ................................................................. 15
2-8. SL Motor Assy (M902) ..................................................... 15
2-9. LE Motor Assy (M903) ..................................................... 16
2-10. Servo Board ....................................................................... 16
3. DIAGRAMS
3-1. Block Diagram CD Section ......................................... 17
3-2. Block Diagram Main Section ...................................... 18
3-3. Block Diagram Display Section .................................. 19
3-4. Circuit Boards Location .................................................... 20
3-5. Printed Wiring Boards CD Mechanism Section ......... 21
3-6. Schematic Diagram CD Mechanism Section (1/2) ..... 22
3-7. Schematic Diagram CD Mechanism Section (2/2) ..... 23
3-8. Printed Wiring Board Main Section ............................ 24
3-9. Schematic Diagram Main Section (1/3) ...................... 26
3-10. Schematic Diagram Main Section (2/3) ...................... 27
3-11. Schematic Diagram Main Section (3/3) ...................... 28
3-12. Printed Wiring Board Sub Section .............................. 29
3-13. Schematic Diagram Sub Section ................................. 30
3-14. Printed Wiring Board Key Section .............................. 31
3-15. Schematic Diagram Key Section ................................ 32
4. EXPLODED VIEWS
4-1. Main Section ..................................................................... 40
4-2. Front Panel Section ........................................................... 41
4-3. CD Mechanism Section (1) (MG-611WA-186//Q) ........... 42
4-4. CD Mechanism Section (2) (MG-611WA-186//Q) ........... 43
4-5. CD Mechanism Section (3) (MG-611WA-186//Q) ........... 44
4-6. CD Mechanism Section (4) (MG-611WA-186//Q) ........... 45
5. ELECTRICAL PARTS LIST ........................................ 46
5
CDX-GT50W/GT500/GT500EE/GT550
SECTION 1
GENERAL
This section is extracted
from instruction manual.
· CDX-GT50W/GT500: US, Canadian Model
· CDX-GT500: AEP, UK Model
6
Location of controls and basic operations
Main unit
Front panel removed
Card remote commander
RM-X151
Refer to the pages listed for details. The
corresponding buttons on the card remote
commander control the same functions as those
on the unit.
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 Receptor for the card remote
commander
D BTM/CAT*1 button 8
To start the BTM function (press and hold).
E Display window
F DSO button 2
To select the DSO mode (1, 2, 3 or off). The
larger the number, the more enhanced the
effect.
G OPEN button 5
CDX-GT500
RESET
ql
w;
qk
7
H GP*2/ALBM*3 +/ buttons*4
To skip groups/albums (press); skip groups/
albums continuously (press and hold).
I 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).
J DSPL (display) button 8
To change display items.
K SENS button
To improve weak reception: Local/Mono.
L SOURCE button
To power on; change the source (Radio/CD/
MD*5/AUX/SAT*1).
M MODE button 8, 10
To select the radio band (FM/AM)/select the
SAT tuner band (mode)*1/select the unit*6.
N SCRL (scroll) button
To scroll the display item.
O Number buttons
CD/MD*5:
(3): REP 8, 10
(4): SHUF 8, 10
(5): BBE MP*7 2
To activate the BBE MP function, set
"BBE MP on." To cancel, set "BBE MP
off."
(6): PAUSE*7
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
P EQ3 (equalizer) button 9
To select an equalizer type (Xplod, Vocal,
Edge, Cruise, Space, Gravity, Custom or
Off).
Q IMAGE button 2
To select the display image.
Movie mode 1-3 t Spectrum analyzer
mode 1-5 t Space Producer mode t Wall
paper mode 1-3 t Normal play/reception
mode
R RESET button 4
S Z (eject) button 5
To eject the disc.
T Disc slot 5
To insert the disc.
The following buttons on the card remote
commander have also different buttons/functions
from the unit.
wa < (.)/, (>) buttons
To control CD/radio, the same as (SEEK)
/+ on the unit.
ws VOL (volume) +/ button
To adjust volume.
wd ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
wf SEL (select) button
The same as the select button on the unit.
wg M (+)/m () buttons
To control CD, the same as (GP/ALBM) +/
on the unit.
wh Number buttons
To receive stored stations (press); store
stations (press and hold).
*1 When the SAT tuner is connected.
*2 When an ATRAC CD is played.
*3 When an MP3/WMA is played.
*4 If the changer is connected, the operation is
different, see page 10.
*5 When an MD changer is connected.
*6 When a CD/MD changer is connected.
*7 When playing back on this unit.
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 of the card remote
commander" on page 13.
6
Location of controls and basic operations
Main unit
Front panel removed
Card remote commander
RM-X151
Refer to the pages listed for details. The
corresponding buttons on the card remote
commander control the same functions as those
on the unit.
A OFF button
To power off; stop the source.
B Volume control dial/select button 11
To adjust volume (rotate); select setup items
(press and rotate).
C Receptor for the card remote
commander
D PTY (Programme Type) button 10
To select PTY in RDS.
E Display window
F DSO button 2
To select the DSO mode (1, 2, 3 or off). The
larger the number, the more enhanced the
effect.
G OPEN button 5
CDX-GT500
RESET
ql
w;
qk
7
H GP*1/ALBM*2 +/ buttons*3
To skip groups/albums (press); skip groups/
albums continuously (press and hold).
I 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).
J DSPL (display) button 8
To change display items.
K SENS/BTM button
To improve weak reception: Local/Mono
(press); start the BTM function (press and
hold).
L SOURCE button
To power on; change the source (Radio/CD/
MD*4/AUX).
M MODE button 8, 12
To select the radio band (FM/MW/LW)/
select the unit*5.
N AF (Alternative Frequencies)/TA
(Traffic Announcement) button 9
To set AF and TA/TP in RDS.
O Number buttons
CD/MD*4:
(3): REP 8, 12
(4): SHUF 8, 12
(5): BBE MP*6 3
To activate the BBE MP function, set
"BBE MP on." To cancel, set "BBE MP
off."
(6): PAUSE*6
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
P EQ3 (equalizer) button 11
To select an equalizer type (Xplod, Vocal,
Edge, Cruise, Space, Gravity, Custom or
Off).
Q IMAGE button 2
To select the display image.
Movie mode 1-3 t Spectrum analyzer
mode 1-5 t Space Producer mode t Wall
paper mode 1-3 t Normal play/reception
mode
R RESET button 4
S Z (eject) button 5
To eject the disc.
T Disc slot 5
To insert the disc.
The following buttons on the card remote
commander have also different buttons/functions
from the unit.
wa < (.)/, (>) buttons
To control CD/radio, the same as (SEEK)
/+ on the unit.
ws VOL (volume) +/ button
To adjust volume.
wd ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
wf SEL (select) button
The same as the select button on the unit.
wg M (+)/m () buttons
To control CD, the same as (GP/ALBM) +/
on the unit.
wh SCRL (scroll) button
To scroll display item.
wj 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.
*3 If the changer is connected, the operation is
different, see page 12.
*4 When an MD changer is connected.
*5 When a CD/MD changer is connected.
*6 When playing back on this unit.
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 of the card remote
commander" on page 15.