MHC-RG88, MHC-RV8, SS-WGV8 - Sony Audio Service Manual (repair manual)

Model
MHC-RG88 MHC-RV8 SS-WGV8
Pages
7
Size
195.92 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
mhc-rg88-mhc-rv8-ss-wgv8.pdf
Date

View Sony MHC-RG88 / MHC-RV8 / SS-WGV8 Service Manual online

SERVICE MANUAL
9-873-656-01
Sony Corporation
2002C0500-1
Home Audio Company
C
 2002.03
Published by Sony Engineering Corporation
Ver 1.0  2002.03
SUBWOOFER SYSTEM
E Model
SPECIFICATIONS
Subwoofer system
1 way, 1 unit,
bass-reflex type
Speaker units
Woofer
20 cm, cone type
Nominal Impedance
8 ohms
Dimensions (w/h/d)
Approx. 250 
× 360 × 336.5
mm
Mass
7.5 kg
Design and specifications are subject to change
without notice.
SS-WGV8
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
2
SS-WGV8
SECTION  1
GENERAL
This section is extracted from
instruction manual.
LOCATION  OF  CONTROLS
–  Front Panel –
LINK (indicator) 6
MATRIX SUR1 (indicator) 5
MATRIX SUR2 (indicator) 4
SUBWOOFER LEVEL 2
SUBWOOFER ON/OFF 1
SURROUND SPEAKER MODE
3
A - Z
1
2
3
4
5
6
ALPHABETICAL ORDER
3
SS-WGV8
Note on Printed Wiring Board:
X
: parts extracted from the component side.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
2-1.
NOTE  FOR  PRINTED  WIRING  BOARD  AND  SCHEMATIC  DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
C
: panel designation.
A
: B+ Line.
• Voltages are dc with respect to ground in no-signal
conditions.
no mark : AUDIO
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
B
These are omitted.
C
E
Q
SECTION  2
DIAGRAMS
4
SS-WGV8
2-2.
PRINTED  WIRING  BOARD
WOOFER BOARD
1-683-756-
11
(11)
SUBWOOFER LEVEL
RV107
1
3
SURROUND SPEAKER MODE
(ROTARY ENCODER)
E
E
E
E
MATRIX SUR2
D106
MATRIX SUR1
D108
LINK
D108
SUBWOOFER
ON/OFF
D105, S102
TO
HCD-RG88
OR
HCD-RV8
A
B
1
2
3
4
5
S101
• Semiconductor
Location
Ref. No.
Location
D105
A-3
D106
B-2
D107
B-4
D108
B-3
Q105
A-2
Q106
B-2
Q107
B-4
Q108
B-3
5
SS-WGV8
2-3.
SCHEMATIC  DIAGRAM
R127
C103
R116
R117
R118
Q108
Q107
Q106
R105
R128
C102
R101
C101
R103
R102
CN101
R126
R106
Q105
R
125
R115
RV107
D106
D105
D108
D107
S102
R104
S101
10k
0.1
10k
10k
10k
2SC2785TP
-FEK
2SC2785TP
-FEK
2SC2785TP
-FEK
100
10k
100
10V
100k
100p
4.7k
2.2k
10P
10k
150
2SC2785TP
-FEK
10k
10k
50k
SEL 5923A-TP15
SEL 5923A-TP15
SEL 5923A-TP15
SEL 5923A-TP15
10k
AD-KEY
VOLUME
AGND
D+4V
DGND
DGND
M1-LED
LINK-LED
M2-LED
ON/OFF-LED
LED DRIVE
Q105-108
TO
HCD-RG88
OR
HCD-RV8
SUBWOOFER
ON/OFF
SUBWOOFER
LEVEL
MATRIX SUR2
MATRIX SUR1
LINK
SUBWOOFER
ON/OFF
(ROTARY ENCODER)
SURROUND
SPEAKER MODE
6
SS-WGV8
SECTION  3
EXPLODED  VIEW
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
4-237-992-01 KNOB, LEVEL
2
4-237-993-01 KNOB, MODE
4
A-4735-706-A FRONT PANEL ASSY
5
4-874-614-21 SCREW (1) (3.5X14), TAPPING
6
4-237-990-01 SUB-PANEL
7
7-685-647-79 SCREW +BVTP 3X10 TYPE2 IT-3 (B)
8
1-683-756-11 WOOFER BOARD
9
9-831-275-51 WIRE KIT
10
1-824-107-11 CORD
SP1
1-544-986-11 SPEAKER (20cm)
1
2
4
5
not
supplied
not
supplied
not
supplied
SP1
5
6
7
8
10
9
7
SS-WGV8
SECTION  4
ELECTRICAL  PARTS  LIST
WOOFER
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1-683-756-11 WOOFER 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
< LED >
D105
8-719-057-97 LED   SEL5923A-TP15 (SUBWOOFER ON/OFF)
D106
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR2)
D107
8-719-057-97 LED   SEL5923A-TP15 (LINK)
D108
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR1)
< 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
1-249-441-11 CARBON
100K
5%
1/4W
R102
1-249-421-11 CARBON
2.2K
5%
1/4W
R103
1-249-425-11 CARBON
4.7K
5%
1/4W
R104
1-249-429-11 CARBON
10K
5%
1/4W
R105
1-247-807-31 CARBON
100
5%
1/4W
R106
1-249-407-11 CARBON
150
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
R128
1-249-429-11 CARBON
10K
5%
1/4W
< VARIABLE RESISTOR >
RV107
1-225-406-11 RES, VAR, CARBON 50K (SUBWOOFER LEVEL)
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: 
µ, for example:
uA. .
µA. .
uPA. . : 
µPA. .
uPB. . : 
µPB. .
uPC. . : 
µPC. .
uPD. . : 
µPD. .
• CAPACITORS
uF: 
µF
• COILS
uH: 
µH
<  ROTARY ENCODER/SWITCH >
S101
1-476-553-11 ENCODER, ROTARY
(SURROUND SPEAKER MODE)
S102
1-771-410-21 SWITCH, TACTILE (SUBWOOFER ON/OFF)
**************************************************************
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.
7
SS-WGV8
SECTION  4
ELECTRICAL  PARTS  LIST
WOOFER
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1-683-756-11 WOOFER 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
< LED >
D105
8-719-057-97 LED   SEL5923A-TP15 (SUBWOOFER ON/OFF)
D106
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR2)
D107
8-719-057-97 LED   SEL5923A-TP15 (LINK)
D108
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR1)
< 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
1-249-441-11 CARBON
100K
5%
1/4W
R102
1-249-421-11 CARBON
2.2K
5%
1/4W
R103
1-249-425-11 CARBON
4.7K
5%
1/4W
R104
1-249-429-11 CARBON
10K
5%
1/4W
R105
1-247-807-31 CARBON
100
5%
1/4W
R106
1-249-407-11 CARBON
150
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
R128
1-249-429-11 CARBON
10K
5%
1/4W
< VARIABLE RESISTOR >
RV107
1-225-406-11 RES, VAR, CARBON 50K (SUBWOOFER LEVEL)
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: 
µ, for example:
uA. .
µA. .
uPA. . : 
µPA. .
uPB. . : 
µPB. .
uPC. . : 
µPC. .
uPD. . : 
µPD. .
• CAPACITORS
uF: 
µF
• COILS
uH: 
µH
<  ROTARY ENCODER/SWITCH >
S101
1-476-553-11 ENCODER, ROTARY
(SURROUND SPEAKER MODE)
S102
1-771-410-21 SWITCH, TACTILE (SUBWOOFER ON/OFF)
**************************************************************
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.
7
SS-WGV8
SECTION  4
ELECTRICAL  PARTS  LIST
WOOFER
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1-683-756-11 WOOFER 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
< LED >
D105
8-719-057-97 LED   SEL5923A-TP15 (SUBWOOFER ON/OFF)
D106
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR2)
D107
8-719-057-97 LED   SEL5923A-TP15 (LINK)
D108
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR1)
< 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
1-249-441-11 CARBON
100K
5%
1/4W
R102
1-249-421-11 CARBON
2.2K
5%
1/4W
R103
1-249-425-11 CARBON
4.7K
5%
1/4W
R104
1-249-429-11 CARBON
10K
5%
1/4W
R105
1-247-807-31 CARBON
100
5%
1/4W
R106
1-249-407-11 CARBON
150
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
R128
1-249-429-11 CARBON
10K
5%
1/4W
< VARIABLE RESISTOR >
RV107
1-225-406-11 RES, VAR, CARBON 50K (SUBWOOFER LEVEL)
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: 
µ, for example:
uA. .
µA. .
uPA. . : 
µPA. .
uPB. . : 
µPB. .
uPC. . : 
µPC. .
uPD. . : 
µPD. .
• CAPACITORS
uF: 
µF
• COILS
uH: 
µH
<  ROTARY ENCODER/SWITCH >
S101
1-476-553-11 ENCODER, ROTARY
(SURROUND SPEAKER MODE)
S102
1-771-410-21 SWITCH, TACTILE (SUBWOOFER ON/OFF)
**************************************************************
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.
7
SS-WGV8
SECTION  4
ELECTRICAL  PARTS  LIST
WOOFER
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1-683-756-11 WOOFER 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
< LED >
D105
8-719-057-97 LED   SEL5923A-TP15 (SUBWOOFER ON/OFF)
D106
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR2)
D107
8-719-057-97 LED   SEL5923A-TP15 (LINK)
D108
8-719-057-97 LED   SEL5923A-TP15 (MATRIX SUR1)
< 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
1-249-441-11 CARBON
100K
5%
1/4W
R102
1-249-421-11 CARBON
2.2K
5%
1/4W
R103
1-249-425-11 CARBON
4.7K
5%
1/4W
R104
1-249-429-11 CARBON
10K
5%
1/4W
R105
1-247-807-31 CARBON
100
5%
1/4W
R106
1-249-407-11 CARBON
150
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
R128
1-249-429-11 CARBON
10K
5%
1/4W
< VARIABLE RESISTOR >
RV107
1-225-406-11 RES, VAR, CARBON 50K (SUBWOOFER LEVEL)
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: 
µ, for example:
uA. .
µA. .
uPA. . : 
µPA. .
uPB. . : 
µPB. .
uPC. . : 
µPC. .
uPD. . : 
µPD. .
• CAPACITORS
uF: 
µF
• COILS
uH: 
µH
<  ROTARY ENCODER/SWITCH >
S101
1-476-553-11 ENCODER, ROTARY
(SURROUND SPEAKER MODE)
S102
1-771-410-21 SWITCH, TACTILE (SUBWOOFER ON/OFF)
**************************************************************
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.

Download Sony MHC-RG88 / MHC-RV8 / SS-WGV8 Service Manual (Repair Manual)

Here you can view online and download Sony MHC-RG88 / MHC-RV8 / SS-WGV8 Service Manual in PDF. MHC-RG88 / MHC-RV8 / SS-WGV8 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony MHC-RG88 / MHC-RV8 / SS-WGV8 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.