Sony SRS-T55 Service Manual ▷ View online
3
SRS-T55
SECTION 2
DISASSEMBLY
2-1. BATTERY BOX
2-2. SPEAKER
• The equipment can be removed using the following procedure.
Note :
Remove Speaker (R) in the same way.
2
6
4
7
B
9
3 Screws (+ P2X6)
8 Screws (+2.6X6)
1 Screws (+ P2X5)
Cabinet (L), rear
Speaker
lead
lead
Cabinet (L), front
Bar, tension
Shaft (L), rotary
Speaker (L)
(SP1)
(SP1)
A
5 Remove the speaker
lead from groove of
"Cabinet (L), front".
On attaching, set it
as shown in the
figure.
"Cabinet (L), front".
On attaching, set it
as shown in the
figure.
While pushing claw in the arrow
A
A
direction, remove "Shaft (L),
rotary" by pushing it out in the
arrow B direction.
arrow B direction.
2
4
3
6
1
5 Screws (+ P2X6)
7 Remove soider
(four places)
5 Screws (+ P2X6)
Front section
Battery box
Lid, battery case
Set
Front section
Speaker
Battery box
AMP board, DC Jack board
Note : Follow the disassembly procedure in the numerical order given.
4
SRS-T55
2-3. AMP BOARD, DC JACK BOARD
5
2
3
1 Screws (+ P2X6)
Lid, battery case
Box (L), battery
AMP board
DC Jack board
Box (R), battery
Cord (with plug)
6 Remove solder
(two places)
4 Remove solder
(five places)
5
5
SRS-T55
12
(12)
1-679-480-
12
(12)
1-679-473-
12
(12)
1-679-473-
DC JACK BOARD (SIDE A)
AMP BOARD (SIDE A)
AMP BOARD (SIDE B)
DC JACK BOARD (SIDE B)
12
(12)
1-679-480-
BCE
Q2
BCE
Q1
R11
R9
R1
R5
R7
R3
R15
C21
C19
R16
R17
C20
C1
C103
R6
C25
R20
R18
C18
R10
R12
C2
-1
-3
-4
-2
C104
C101
C26
R4
C102
OFF/DIRECT
C24
R19
R2
V+
V+
GND
GND
R
L
G
R8
R14
C23
D1
D3
C13
C16
C15
C4
C3
C22
C5
C6
C14
C10
C17
+
-
C9
C7
C8
C12
C11
SP2
SPEAKER(R)
8
Ω
+
-
SP1
SPEAKER(L)
8
Ω
P1
(INPUT)
ON
r
S1
POWER
1
5
11
15
20
10
IC2
1
5
11
15
20
10
IC1
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
4PCS, 6V
JK1
DC IN 6V
D2
POWER
2
3
4
5
6
7
8
9
1
B
C
D
E
F
G
A
3-1. PRINTED WIRING BOARDS
D1
D-7
D2
E-7
D3
E-8
IC1
F-9
IC2
D-9
Q1
B-6
Q2
C-5
Ref. No.
Location
z
Semiconductor
Location
SECTION 3
DIAGRAMS
Note:
• X : parts extracted from the component side.
•
• X : parts extracted from the component side.
•
z
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
6
6
SRS-T55
3-2. SCHEMATIC DIAGRAM
Note:
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. pF: µµF 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.
• Power voltage is dc 6 V and fed with regulated dc power supply
• Power voltage is dc 6 V and fed with regulated dc power supply
from external power voltage jack (JK1).
• Voltages are dc with respect to ground under no-signal conditions.
• Voltages are taken with a VOM (Input impedance 10 M
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production toler-
ances.
ances.
• Signal path.
F
: LINE INPUT
+
-
+
-
DC IN 6V
IC1
POWER AMP
SPEAKER
(L-CH)
POWER AMP
SPEAKER
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
4PCS,6V
S1-4
S1-3
S1-2
S1-1
S1
ON
OFF/DIRECT
POWER
IC2
(R-CH)
BRIDGE
OUT2
BOOT2
GND
FEEDBACK
IN2(+)
SVR
VCC
OUT1
BOOT1
GND
FEEDBACK
IN1(+)
GND(SUB)
GND
GND
GND
GND
GND
GND
BRIDGE
OUT2
BOOT2
GND
FEEDBACK
IN2(+)
SVR
VCC
OUT1
BOOT1
GND
FEEDBACK
IN1(+)
GND(SUB)
GND
GND
GND
GND
GND
GND
TEA2025D-013TR
TEA2025D-013TR
20
19
18
17 16 15 14
11
+
–
13 12
+
–
THERMAL
PROTECT
START
CIRCUIT
10
9
8
7
6
5
4
3
2
1
DECOUPLING
VCC
OUT 1
BOOT 1
GND
GND
GND
GND
FEEDBACK
IN1 (+)
GND (SUB)
BRIDGE
OUT 2
BOOT 2
GND
GND
GND
GND
FEEDBACK
IN2 (+)
SVR
• IC BLOCK DIAGRAMS
IC1,2 TEA2050D-013TR