Table Of Contents - Sony CDX-GT180 Service Manual

CAUTION
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.
If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fi xed resistor located at the side of optical
pick-up block.
semi-fixed resistor
CDX-GT180/GT280/GT280S/GT282S:
This compact disc player is classifi ed as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.
This label is located on the bottom of the chassis.
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.
CDX-GT130/GT180/GT230/GT280/GT280S/GT282S
1.
2.
3.
optical pick-up
3-1. Sub Panel Assy ...............................................................
3-2. CD Mechanism Block .....................................................
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
4.
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.
5-1. Main Section ................................................................... 28
5-2. Front Panel Section ......................................................... 29
5-3. CD Mechanism Section (MG-101L-188//C) .................. 30
6.

TABLE OF CONTENTS

SERVICING NOTES
..............................................
GENERAL
Location of Controls .......................................................
Connections ....................................................................
DISASSEMBLY
DIAGRAMS
EXPLODED VIEWS
ELECTRICAL PARTS LIST .............................. 31
4
5
6
9
9
3