DOWNLOAD Sony CDX-GT24 / CDX-GT28 Service Manual ↓ Size: 4.05 MB | Pages: 36 in PDF or view online for FREE

Model
CDX-GT24 CDX-GT28
Pages
36
Size
4.05 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-gt24-cdx-gt28.pdf
Date

Sony CDX-GT24 / CDX-GT28 Service Manual ▷ View online

CDX-GT24/GT28
3
Type of disc
Label on the disc
CD-DA
MP3
WMA
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 fl ow) 
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.
 •  CD Play back
You can play CD-DA (also containing CD TEXT) and CD-
R/CD-RW (MP3/WMA fi les).
CDX-GT24/GT28
4
1. 
SERVICING  NOTES
 ..............................................   5
2. GENERAL
 
Location of Controls .......................................................   6
 Connections 
....................................................................  
7
3. DISASSEMBLY
3-1.   Sub Panel Assy  ...............................................................   9
3-2.   CD Mechanism Block .....................................................   9
3-3.   Main Board .....................................................................   10
3-4. Servo 
Board 
....................................................................  10
3-5.  Chassis (T) Sub Assy ......................................................   11
3-6.  Roller Arm Assy ..............................................................   11
3-7. Chassis 
(OP) 
Assy 
...........................................................  12
3-8.  Chucking Arm Sub Assy .................................................   12
3-9. Sled 
Motor 
Assy 
..............................................................  13
3-10.  Optical Pick-up Section ..................................................   14
3-11. Optical Pick-up ...............................................................   14
TABLE  OF  CONTENTS
4. DIAGRAMS
4-1.  Block Diagram –Main Section– .....................................   15
4-2.  Block Diagram –Display Section– .................................   16
4-3.  Printed Wiring Board –Main Section– ............................   17
4-4.  Schematic Diagram –Main Section (1/3)– ......................   18
4-5.  Schematic Diagram –Main Section (2/3)– ......................   19
4-6.  Schematic Diagram –Main Section (3/3)– ......................   20
4-7.  Printed Wiring Boards –Key Section– ............................   21
4-8.  Schematic Diagram –Key Section– ................................   22
5. EXPLODED 
VIEWS
5-1. Main 
Section 
...................................................................  28
5-2.  Front Panel Section .........................................................   29
5-3.  CD Mechanism Section (MG-101L-188//Q) ..................   30
6. 
ELECTRICAL PARTS LIST ..............................   31
CDX-GT24/GT28
5
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 
(CN401) with the extension cable (Part No. J-2502-076-1).
NOTE FOR REPLACEMENT OF THE AUX JACK (J901)
To replace the AUX jack requires alignment.
1.  Insert the AUX jack into the KEY board.
2.  Place the KEY board on the front panel. 
3.  Solder the three terminals of the jack.
NOTE  FOR  REPLACEMENT  OF  THE  SERVO  BOARD
When repairing, the complete SERVO board (Part No. A-1552-
122-A) should be replaced since any parts in the SERVO board 
cannot be repaired.
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-
tact may be caused.
SERVO BOARD
CN401
MAIN BOARD
CNP301
J-2502-076-1
KEY board
AUX jack
front panel
CDX-GT24/GT28
6
SECTION  2
GENERAL
This section is extracted 
from instruction manual.
•  LOCATION  OF  CONTROLS
6
Location of controls and basic operations
Main unit
This section contains instructions on the location 
of controls and basic operations.
For details, see the respective pages.
OFF button
To power off; stop the source.
EQ3 (equalizer) button page 10
To select an equalizer type (XPLOD,
VOCAL, EDGE, CRUISE, SPACE,
GRAVITY, CUSTOM or OFF).
Control dial/select button page 10
To adjust volume (rotate); select setup items
(press and rotate).
SOURCE button
To power on; change the source (Radio/CD/
AUX).
Disc slot
Insert the disc (label side up), playback
starts.
Display window
AUX input jack page 11
To connect a portable audio device.
) ;(eject) button
To eject the disc.
SEEK
SEEK
PAUSE
REP
SHUF
EQ3
DSPL
OFF
AF/TA
PTY
PUSH SELECT
6
1
5
3
2
4
MODE
SOURCE
SCRL
ALBUM
RB RT
R
RE
RG
7
*
(front panel release) button page 4
DSPL (display)/SCRL (scroll) button
page 8
To change display items (press); scroll the
display item (press and hold).
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).
MODE button page 8
To select the radio band (FM/MW/LW).
AF (Alternative Frequencies)/
TA (Traffic Announcement)/
PTY (Program Type) button 
page 10
To set AF and TA (press); select PTY (press
and hold) in RDS.
Number buttons
CD:
/ : ALBUM –/+ (during MP3/WMA
playback)
To skip albums (press); skip albums
continuously (press and hold).
REP page 8
SHUF page 8
PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
Page of 36
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Sony CDX-GT24 / CDX-GT28 Service Manual ▷ Download

  • DOWNLOAD Sony CDX-GT24 / CDX-GT28 Service Manual ↓ Size: 4.05 MB | Pages: 36 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony CDX-GT24 / CDX-GT28 in PDF for free, which will help you to disassemble, recover, fix and repair Sony CDX-GT24 / CDX-GT28 Car Audio. Information contained in Sony CDX-GT24 / CDX-GT28 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.