Table Of Contents - Sony CDX-GT42IPW Service Manual

This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.
• CDX-GT44IP
This label is located on the bottom of the chassis.
• CD Playback
You can play CD-DA (also containing CD TEXT) and CD-R/
CD-RW (MP3/WMA files).
Type of discs
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 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.
Label on the disc
CDX-GT42IPW/GT44IP/GT420IP

TABLE OF CONTENTS

1. SERVICE NOTE
........................................................ 4
2. GENERAL
Location of Controls (CDX-GT42IPW) .......................... 5
Connections (CDX-GT42IPW) ....................................... 5
Location of Controls (CDX-GT44IP) ............................. 7
Connections (CDX-GT44IP) ........................................... 7
Location of Controls (CDX-GT420IP) ........................... 9
Connections (CDX-GT420IP) ......................................... 9
3. DISASSEMBLY
3-1. Sub Panel Assy ................................................................ 12
3-2. CD Mechanism Block ..................................................... 12
3-3. Main Board ...................................................................... 13
3-4. Servo Board ..................................................................... 13
3-5. Chassis (T) Sub Assy ....................................................... 14
3-6. Roller Arm Assy .............................................................. 14
3-7. Chassis (OP) Assy ........................................................... 15
3-8. Chucking Arm Sub Assy ................................................. 15
3-9. Sled Motor Assy .............................................................. 16
3-10. Optical Pick-up Section ................................................... 17
3-11. Optical Pick-up ................................................................ 17
4. DIAGNOSIS FUNCTION
5. DIAGRAMS
5-1. Block Diagram -Main Section- ...................................... 21
5-2. Block Diagram -Display Section- .................................. 22
5-3. Printed Wiring Board -Main Section- ............................ 23
5-4. Schematic Diagram -Main Section (1/4)- ...................... 24
5-5. Schematic Diagram -Main Section (2/4)- ...................... 25
5-6. Schematic Diagram -Main Section (3/4)- ...................... 26
5-7. Schematic Diagram -Main Section (4/4)- ...................... 27
5-8. Printed Wiring Board -ATMEL Section- ....................... 28
5-9. Schematic Diagram -ATMEL Section- .......................... 29
5-10. Printed Wiring Board -Key Section- .............................. 30
5-11. Schematic Diagram -Key Section- ................................. 31
6. EXPLODED VIEWS
6-1. Main Section .................................................................... 38
6-2. Front Panel Section ......................................................... 39
6-3. CD Mechanism Section (MG-101TC-188//C) ................ 40
7. ELECTRICAL PARTS LIST
........................................ 18
.................................. 41
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