CDX-GT225C - Sony Car Audio Service Manual (repair manual). Page 3

3

You can play CD-DA (also containing CD TEXT) and CD-R/
CD-RW (MP3/WMA files).

Type of discs

Label on the disc

CD-DA

MP3

WMA

.......................................................

4

Location of Controls ........................................................

5

Connections .....................................................................

6

3-1.

Sub Panel Assy ................................................................

8

3-2.

CD Mechanism Block .....................................................

8

3-3.

Main Board ......................................................................

9

3-4.

Servo Board .....................................................................

9

3-5.

Chassis (T) Sub Assy ....................................................... 10

3-6.

Roller Arm Assy .............................................................. 10

3-7.

Chassis (OP) Assy ........................................................... 11

3-8.

Chucking Arm Sub Assy ................................................. 11

3-9.

Sled Motor Assy .............................................................. 12

3-10. Optical Pick-up Section ................................................... 13
3-11. Optical Pick-up ................................................................ 13

....................................... 14

5-1.

Block Diagram –Main Section– ...................................... 17

5-2.

Block Diagram –Display Section– .................................. 18

5-3.

Printed Wiring Board –Main Section– ............................ 19

5-4.

Schematic Diagram –Main Section (1/4)– ...................... 20

5-5.

Schematic Diagram –Main Section (2/4)– ...................... 21

5-6.

Schematic Diagram –Main Section (3/4)– ...................... 22

5-7.

Schematic Diagram –Main Section (4/4)– ...................... 23

5-8.

Printed Wiring Board –Key Section– .............................. 24

5-9.

Schematic Diagram –Key Section– ................................. 25

6-1.

Main Section .................................................................... 29

6-2.

Front Panel Section ......................................................... 30

6-3.

CD Mechanism Section (MG-101TC-188//Q) ................ 31

................................ 32

This label is located on the bottom of the chassis.

This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.

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)

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.