Sony FST-GTK2I / SA-WGTK2I Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
SA-WGTK2i
SUBWOOFER
9-890-547-03
2012E08-1
©
2012.05
Mexican Model
Ver. 1.2 2012.05
• SA-WGTK2i is the
subwoofer section in FST-GTK2i.
subwoofer section in FST-GTK2i.
SPECIFICATIONS
Subwoofer
SA-WGTK2i (for FST-GTK2i)
Subwoofer system
SA-WGTK2i (for FST-GTK2i)
Subwoofer system
1-way, 1-driver, Bass refl ex
Speaker unit
Subwoofer: 200 mm (8 in), cone type
Rated impedance
8
8
ohms
Power requirements
AC 127 V, 60 Hz
Power consumption
200 W
Dimensions (w/h/d) (Approx.)
320 mm × 435 mm × 420 mm
(12 5/8 in × 17 1/4 in × 16 5/8 in)
Mass (Approx.)
11.5 kg (25 lb 6 oz)
Design and specifi cations are subject to change without notice.
SA-WGTK2i
2
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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
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
• 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.
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
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.
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.
also be added to ordinary solder.
NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
1.
SERVICE NOTE
...................................................... 3
2. DISASSEMBLY
2-1. Rear
Cover
Assy
............................................................. 4
2-2. Front
Panel
Assy
............................................................. 5
3. DIAGRAMS
3-1. Block
Diagram
................................................................ 7
3-2. Printed Wiring Board – SUBWOOFER, SW SPK LED
and SW VOL Board – ..................................................... 9
3-3. Schematic Diagram – SUBWOOFER, SW SPK LED
and SW VOL Board – ..................................................... 10
3-4. Printed Wiring Board – SW TRANS and
SW SWITCH Board – .................................................... 11
3-5. Schematic Diagram – SW TRANS and
SW SWITCH Board – .................................................... 12
4. EXPLODED
VIEW
4-1. Back Panel Section ......................................................... 13
4-2. Front Panel Section ......................................................... 14
4-2. Front Panel Section ......................................................... 14
5.
ELECTRICAL PARTS LIST .............................. 15
TABLE OF CONTENTS
• JIG
When disassembling the set, use the following jig
(for speaker removal).
Part No. J-2501-238-A JIG FOR SPEAKER REMOVAL
When disassembling the set, use the following jig
(for speaker removal).
Part No. J-2501-238-A JIG FOR SPEAKER REMOVAL
SA-WGTK2i
3
SECTION 1
SERVICE NOTE
Note for Repairing of the SA-WGTK2i
The SA-WGTK2i has power switch but cannot be operated on its own. Be sure to connect the set to the HCD-GTK2i only when
performing service and inspection.
The SA-WGTK2i has power switch but cannot be operated on its own. Be sure to connect the set to the HCD-GTK2i only when
performing service and inspection.
HCD-GTK2i
SA-WGTK2i
SA-WGTK2i
4
SECTION 2
DISASSEMBLY
2-1. REAR COVER ASSY
Note: Follow the disassembly procedure in the numerical order given.
3
CN1200 (8P)
wk
CN1300 (2P)
qh
CN1204 (8P)
qg
CN1202 (2P)
4
CN1301 (2P)
8
CN1201 (3P)
e;
power cord
wl
cord bush
ql
six screws
(3.5
u14, TAPPING)
w;
chassis SW
qk
SUBWOOFER board
5
SW TRANS board
qf
two screws
(SCREW
TRANSISTOR)
qd
five screws
(+BVTP
3
u10)
qj
one screw
(+BVTP
3
u10)
6
four screws
(+BVTT
4
u8 (S))
q;
four screws
(+BVTP
3
u10)
ws
two screws
(+BVTP
3
u10)
wg
two screws
(+BVTP
3
u10)
wd
bracket heatsink (SW)
wh
bracket
heatsink
(SW)
(SW)
wj
heatsink
9
four screws
(3.5
u14, TAPPING)
wa
two screws
(3.5
u14, TAPPING)
wf
two screws
(3.5
u14,
TAPPING)
1
nine screws
(3.5
u14, TAPPING)
7
power transformer
2
back cover
qa
bracket fan
qs
DC fan (M101)