Sony SA-WCT180 User Manual

SA-WCT180
3
SECTION 1
SERVICING NOTES
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.
ADVANCE PREPARATION WHEN CONFIRMING OP-
ERATION
All of the units included in the HT-CT180 (SA-WCT180/SA-
CT180/Remote control) are required to confi rming operation of
SA-WCT180. Check in advance that you have all of the units.
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
AR : Argentina model
AUS : Australian model
CH : Chinese model
CND : Canadian model
E12 : Indian model
LA : Latin American model (Except Argentina)
SP : Singapore model
TH : Thai model
1. SERVICING NOTES ............................................. 3
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 6
2-2. AMP Block ..................................................................... 6
2-3. MAIN Board ................................................................... 7
2-4. POWER Board ................................................................ 8
2-5. AC Cord (AC1) ............................................................... 9
2-6. Front Panel Block ........................................................... 10
2-7. Loudspeaker (13 cm) (SP1) ............................................ 11
2-8. Grille (SW) Assy ............................................................. 11
3. DIAGRAMS
3-1. Block Diagram ................................................................ 12
3-2. Schematic Diagram - MAIN Board (1/3) - ..................... 14
3-3. Schematic Diagram - MAIN Board (2/3) - ..................... 15
3-4. Schematic Diagram - MAIN Board (3/3) - ..................... 16
3-5. Printed Wiring Board - MAIN Board - ........................... 17
3-6. Printed Wiring Board - KEY Board -.............................. 17
3-7. Schematic Diagram - KEY Board - ................................ 17
3-8. Printed Wiring Board - LED Board - .............................. 18
3-9. Schematic Diagram - LED Board - ................................. 18
3-10. Printed Wiring Board - POWER Board - ........................ 18
3-11. Schematic Diagram - POWER Board - .......................... 19
4. EXPLODED VIEWS
4-1. AMP Section ................................................................... 21
4-2. Front Section ................................................................... 22
TABLE OF CONTENTS
The SERVICING NOTES contains important information for
servicing. Be sure to read this section before repairing the
unit.
Ver. 1.1

Sony SA-WCT180 Specifications

General

Brand	Sony
Model	SA-WCT180
Category	Subwoofer
Language	English