3
CDX-GT22W/GT120/GT220
•
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.
• CD Playback
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*
* CDX-GT22W/GT220 only
TABLE OF CONTENTS
1. SERVICE NOTE ........................................................ 4
2. GENERAL
Location of Controls........................................................ 5
Connections ..................................................................... 5
3. DISASSEMBLY
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
4. DIAGNOSIS FUNCTION........................................ 14
5. DIAGRAMS
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. EXPLODED VIEWS
6-1. Main Section.................................................................... 29
6-2. Front Panel Section ......................................................... 30
6-3. CD Mechanism Section (MG-101TC-188//C) ................ 31
7. ELECTRICAL PARTS LIST .................................. 32
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