Sony WX-GT77UI - Radio / CD, Руководство по обслуживанию

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WX-GT77UI/GT78UI/GT78UIM
3
Type of disc Label on the disc
CD-DA
MP3
WMA
AAC
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
This unit can play CD-DA (also containing CD TEXT) and
CD-R/CD-RW (MP3/WMA/AAC fi les).
This compact disc player is classifi ed as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.
EXCEPT US MODEL:
This label is located on the bottom of the chassis.
1. SERVICE NOTES
................................................... 4
2. GENERAL
Location of Controls ....................................................... 5
Connections .................................................................... 6
3. DISASSEMBLY
3-1. Front Panel Assy ............................................................ 7
3-2. Sub Panel Assy ............................................................... 8
3-3. CD Mechanism Block ..................................................... 8
3-4. Main Board ..................................................................... 9
3-5. Servo
Board .................................................................... 9
3-6. Chassis (T) Sub Assy ...................................................... 10
3-7. Roller Arm Assy .............................................................. 10
3-8. Chassis
(OP) Assy ........................................................... 11
3-9. Chucking Arm Sub Assy ................................................. 11
3-10. Sled Motor Assy .............................................................. 12
3-11. Optical Pick-up Section .................................................. 13
3-12. Optical Pick-up ............................................................... 13
4. DIAGRAMS
4-1. Block Diagram –Main Section– ..................................... 15
4-2. Block Diagram –Display Section– ................................. 16
4-3. Printed Wiring Board –Main Section– ............................ 18
4-4. Schematic Diagram –Main Section (1/3)– ...................... 19
4-5. Schematic Diagram –Main Section (2/3)– ...................... 20
4-6. Schematic Diagram –Main Section (3/3)– ...................... 21
4-7. Printed Wiring Board –Sub Section– .............................. 22
4-8. Schematic Diagram –Sub Section– ................................. 23
4-9. Printed Wiring Board –Key Section (1/2)– ..................... 24
4-10. Printed Wiring Board –Key Section (2/2)– ..................... 25
4-11. Schematic Diagram –Key Section– ................................ 26
5. EXPLODED VIEWS
5-1. Sub Panel Section ........................................................... 33
5-2. Front Panel Section ......................................................... 34
5-3. Main Board Section ........................................................ 35
5-4. CD Mechanism Section (MG-101Z-188//Q) .................. 36
6. ELECTRICAL PARTS LIST
.............................. 37
TABLE OF CONTENTS