Page 1
SS-WG880
A
SERVICE MANUAL
Ver 1.0 2004. 04
• SS-WG880 is the subwoofer section
in MHC-GN880.
SPECIFICATIONS
Subwoofer system 1-way, 1-unit, bass-reflex type
Speaker units
Sub Woofer 20 cm, cone type
Nominal impedance 8 ohms
Dimensions (w/h/d) (Approx.) 265 x 430 x 320 mm
Mass (Approx.) 7.4 kg
E Model
Australian Model
SECTION 1
GENERAL
This section is extracted
from instruction manual.
LOCA TING THE CONTROLS
Design and specifications are subject to change without notice.
6
E
ALPHABETICAL ORDER
A – Z
LINK (indicator) 6
MATRIX SURR 1 (indicator)
MATRIX SURR 2 (indicator)
SUBWOOFER LEVEL 4
SUBWOOFER ON/OFF 1
SURROUND SPEAKER MODE
3
2
5
B
D
C
9-877-803-01
2004D02-1
© 2004.04
SUBWOOFER SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
Page 2
SS-WG880
2-1. PRINTED WIRING BOARD
1
SECTION 2
DIAGRAMS
2
BOARDSW PANEL
3
A
B
C
HCD-GN880
MATRIX
SURR 2
CN101
D106
Q106
R116
R106
C102
C103
R125
R126
R127
R115
R105
D108
MATRIX
SURR 1
E
Q105
E
D105
JW101
Q108
E
R118
R108
S101
1 2 3
SURROUND
SPEAKR
MODE
S102
SUBWOOFER
ON/OFF
D107
LINK
Q107
R117
R107
JW102
R101
R102
R103
C101
R104
JW103
E
R128
RV101
SUBWOOFER
D
JW104
LEVEL
11
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
Q
B
CE
These are omitted.
1-862-762-
(11)
• Semiconductor
Location
Ref. No. Location
D105 A-2
D106 B-2
D107 B-3
D108 B-2
Q105 A-2
Q106 B-2
Q107 B-3
Q108 B-2
2
Page 3
2-2. SCHEMATIC DIAGRAM
RV101
50k
SUBWOOFER
LEVEL
SS-WG880
CN101
C103
0.1
D105
SEL 5923A-TP15
SUBWOOFER
ON/OFF
R125
10k
R115
10k
R101
100k
R105
Q105
2SC2785TP-FEK
SUBWOOFER
R126
10k
180
R102
2.2k
S102
ON/OFF
D106
SEL 5923A-TP15
MATRIX
SURR 2
R116
10k
R103
4.7k
R106
180
2SC2785TP-FEK
Q105-108
LED
DRIVER
C101
100p
D107
SEL 5923A-TP15
LINK
R128
10k
R127
10k
Q106
R117
10k
R104
10k
2SC2785TP-FEK
2SC2785TP-FEK
R107
180
S101
SURROUND
SPEAKER
MODE
D108
SEL 5923A-TP15
MATRIX
SURR 1
Q108
Q107
R118
10k
R108
180
C102
100
10V
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF) 50 WV or
less are not indicated except for electrolytics and tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise specified.
• C : panel designation.
• A : B+ Line.
•Voltages and waveforms are dc with respect to ground in service
mode.
no mark : POWER ON
•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
3
Page 4
SS-WG880
NOTE:
• -XX, -X mean standardized parts, so they may
have some differences from the original one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
3
SECTION 3
EXPLODED VIEWS
SP1
8
6
7
7
2
5
not supplied
2
4
not supplied
not supplied
1
Ref. No. Part No. Description Remarks
1 A-4713-731-A FRONT PANEL ASSY
2 4-986-911-11 SCREW (3.5)
3 4-874-614-02 SCREW (1) (3.5X14), TAPPING
4 2-022-110-01 KNOB, LEVEL
5 2-022-109-01 KNOB, MODE
4
Ref. No. Part No. Description Remarks
6 1-862-762-11 SW PANEL BOARD
7 4-951-620-01 SCREW (2.6X8), +BVTP
8 1-824-107-13 CORD, CONECTION
SP1 1-825-921-11 SPEAKER (20cm)
Page 5
SECTION 4
ELECTRICAL PARTS LIST
SS-WG880
SW PANEL
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
• CAPACITORS:
uF: µF
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
1-862-762-11 SW PANEL BOARD
**************
< CAPACITOR >
C101 1-162-282-31 CERAMIC 100PF 10% 50V
C102 1-124-584-00 ELECT 100uF 20% 10V
C103 1-164-159-11 CERAMIC 0.1uF 50V
< CONNECTOR >
CN101 1-785-336-11 PIN, CONNECTOR (LIGHT ANGLE) 10P
< DIODE >
• RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
• COILS
uH: µH
•SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
R104 1-249-429-11 CARBON 10K 5% 1/4W
R105 1-249-408-11 CARBON 180 5% 1/4W
R106 1-249-408-11 CARBON 180 5% 1/4W
R107 1-249-408-11 CARBON 180 5% 1/4W
R108 1-249-408-11 CARBON 180 5% 1/4W
R115 1-249-429-11 CARBON 10K 5% 1/4W
R116 1-249-429-11 CARBON 10K 5% 1/4W
R117 1-249-429-11 CARBON 10K 5% 1/4W
R118 1-249-429-11 CARBON 10K 5% 1/4W
R125 1-249-429-11 CARBON 10K 5% 1/4W
R126 1-249-429-11 CARBON 10K 5% 1/4W
R127 1-249-429-11 CARBON 10K 5% 1/4W
When indicating parts by reference
number, please include the board.
D105 8-719-057-97 DIODE SEL5923A-TP15 (SUBWOOFER ON/OFF)
D106 8-719-057-97 DIODE SEL5923A-TP15 (MATRIX SURR2)
D107 8-719-057-97 DIODE SEL5923A-TP15 (LINK)
D108 8-719-057-97 DIODE SEL5923A-TP15 (MATRIX SURR1)
< TRANSISTOR >
Q105 8-729-119-79 TRANSISTOR 2SC2785-FEK
Q106 8-729-119-79 TRANSISTOR 2SC2785-FEK
Q107 8-729-119-79 TRANSISTOR 2SC2785-FEK
Q108 8-729-119-79 TRANSISTOR 2SC2785-FEK
< RESISTOR >
R101 1-247-879-91 CARBON 100K 5% 1/4W
R102 1-249-421-11 CARBON 2.2K 5% 1/4W
R103 1-247-847-91 CARBON 4.7K 5% 1/4W
R128 1-249-429-11 CARBON 10K 5% 1/4W
< VARIABLE RESISTOR >
RV101 1-225-406-11 RES, VAR, CARBON 50K
(SUBWOOFER LEVEL)
< SWITCH >
S101 1-477-526-11 ENCODER, ROTARY
(SURROUND SPEAKER MODE)
S102 1-771-410-21 SWITCH, TACTILE (SUBWOOFER ON/OFF)
5
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SS-WG880
REVISION HISTORY
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Ver. Date Description of Revision
1.0 2004.04 New
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