Sony SA-W3800, Руководство по обслуживанию

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3
SA-W2500/W3000/W3800
Specifications ............................................................................ 1
1. DIAGRAMS
1-1. Printed Wiring Boards
- INPUT CONTROL, LED And SWITCH boards - ..... 5
1-2. Schematic Diagram
- INPUT CONTROL, LED And SWITCH boards - ..... 6
1-3. Printed Wiring Boards - MAIN board - ...................... 7
1-4. Schematic Diagram - MAIN board - .......................... 8
2. EXPLODED VIEWS
2-1. Cabinet Section (W2500) ............................................ 9
2-2. Cabinet Section (W3000) .......................................... 10
2-3. Cabinet Section (W3800) .......................................... 11
2-4. Amp Section (W2500) ............................................... 12
2-5. Amp Section (W3000/W3800) .................................. 13
3. ELECTRICAL PARTS LIST
.................................... 14
TABLE OF CONTENTS
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
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 viscou-s (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.