Read Sony SRS-A202 (serv.man2) Service Manual online
SRS-A202
SERVICE MANUAL
Ver. 1.2 2006.06
E Model
Australian Model
9-877-117-03
2006F02-1
© 2006.06
© 2006.06
Sony Corporation
Personal Audio Division
Pubulished by Sony Techno Create Corporation
Pubulished by Sony Techno Create Corporation
ACTIVE SPEAKER SYSTEM
Speaker section
Speaker system
Full range, magnetically shielded
Speaker units
5.7 cm, cone type
Enclosure type
Bass reflex
Impedance
4
Ω
Amplifier section
Rated output
2 W + 2 W (10 % T.H.D., 1 kHz, 4
Ω
)
Input impedance
4.7 k
Ω
(at 1kHz)
Input
Stereo mini plug 2m (INPUT 1)
Stereo mini jack (INPUT 2)
Stereo mini jack (INPUT 2)
General
Dimensions (w/h/d)
Approx. 101 x 191 x 125 mm
(4 x 7
(4 x 7
5
/
8
x 5 in.)
Mass
1,080 g (2 lb. 6 oz.) (L ch),
395 g (14 oz.) (R ch)
395 g (14 oz.) (R ch)
Cord length
2 m (L to R)
Power consumptions 7.5 W
Cord length
Cord length
2 m (power cord)
Design and specifications are subject to change without
notice.
notice.
SPECIFICATIONS
2
Specifications ............................................................................ 1
1. GENERAL
Locating the Controls ......................................................... 2
2. DIAGRAMS
2-1. Schematic Diagram ..................................................... 3
2-2. Printed Wiring Boards ................................................ 4
2-2. Printed Wiring Boards ................................................ 4
3. EXPLODED VIEWS
3-1. Main Section ............................................................... 6
4. ELECTRICAL PARTS LIST
..................................... 7
SAFETY-RELATED COMPONENT 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 WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
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.
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.
TABLE OF CONTENTS
CAUTION
Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.
Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.
SRS-A202
z
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 (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
• 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
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!
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to
flow) than ordinary solder so use caution not to let solder
bridges occur such as on IC pins, etc.
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.
may also be added to ordinary solder.
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
LOCATING THE CONTROLS
VOL
MIN
MAX
VOLUME
POWER
3
3
SRS-A202
SECTION 2
DIAGRAMS
2-1. SCHEMATIC DIAGRAM • Refer to page 6 for Notes.
CN 1
CN 2
SP1
SP2
C19
R19
D2
D1
C20
R20
RV1(2/2)
C9
C8
C5
R8
Q2
Q1
R1
R2
R5
R3
R9
C4
R7
RV1(1/2)
R10
R6
R4
C2
C3
JK1
C1
P1
D3
R21
S1(2/2)
S1(1/2)
C21
D7
D6
D4
D5
C12
R13
C10
C11
R14
C106
C22
C15
R16
R15
C16
R18
R17
C18
C17
C14
C13
FS1
AC IN
C105
C104
C103
C102
C101
2P
2P
10
50V
2.2k
1SS133
1SS133
10
50V
10k
5k
1
50V
1
50V
1
50V
1.2k
DTC144TSA
MEGA BASS
DTC144TSA
MEGA BASS
10k
10k
3.3k
10k
100
1
50V
1.2k
5k
100
3.3k
10k
10
16V
10
16V
10
16V
LED
TL G124A
2.2k
PUSH-SW
PUSH- SW
470
25V
25V
1N4002B
1N4002B
1N4002B
1N4002B
100
16V
16V
100
47
50V
47
50V
100
0.1
1000
25V
0.15
2.2
2.2
0.15
3.3k
3.3k
470
6.3V
470
6.3V
100
16V
16V
100
16V
16V
1A
250V
0.01
1000p
1000p
0.01
0.01
T.S.D
BS
ST.BY
FILTER
BS
VCC
30K
45
45
30K
30K
30K
NF2
IN2
IN1
NF1
FLTR
STB
Y
B.
S.
1
VCC
B.
S.
2
N.C
PRE
GND2
PRE
GND1
PO
WER GND
OUT 1
OUT 2
IC1
BA5417
POWER AMP
T901
POWER
TRANSFORMER
R
L
VOL
VOL
4
4
SRS-A202
2-2. PRINTED WIRING BOARDS
• Refer to page 6 for Notes.
• Semiconductor
Ref. No.
Location
D1
C-4
D2
C-3
D3
D-3
D4
A-5
D5
A-5
D6
A-5
D7
B-5
IC1
B-2
Q1
C-4
Q2
B-4
: USES UNLEADED SOLDER.
CL7
CL6 L+
L-
CL5
CL4
R-
R+
CL3
CL2
GND
R
L
CL1
TP5
TP4
D3
IC1
P1
INPUT 1
JK1
INPUT 2
C1
C2
R4
R2
R3
R6
R5
R14
C104
C103
R13
C17
C15
R16
C106
C22
C16
R15
R17
C19
C20
C18
C102
R8
C101
R7
C4
R9
Q1
C5
Q2
S1
C9
C8
C105
R21
D7
D6
D4
D5
C21
RV1
R20
C3
R1
R10
R18
D2
D1
R19
C14
1
C13
C12
C10
C11
B C E
B C E
11
(11)
1-687-959-
AMP BOARD
POWER BOARD
11
(11)
1-687-301-
SP1
L
SP2
R
1
2
1
2
CN2
1
2
CN1
T901
POWER TRANSFORMER
AC IN
FS1
ON OFF
t
VOL
15
2
3
4
5
6
7
A
1
B
C
D
