Sony SRS-A57 User manual

SRS-A57
SERVICE MANUAL
ACTIVE SPEAKER SYSTEM
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
Australian Model
E Model
Sony Corporation
Personal Audio Company
Shinagawa Tec Service Manual Production Group
9-927-655-12
2001G0200-1
© 2001.7
Ver 1.1 2001.07

– 2 –
SECTION 1
GENERAL This section is extracted from
instruction manual.

SRS-A57
SECTION 2
DIAGRAMS
2-1. PRINTED WIRING BOARDS
– 3 – – 4 –
Note:
•X: parts extracted from the component side.
•b: Pattern on the side which is seen.
D1 B-3
D2 B-3
D4 A-2
Ref. No. Location
zSemiconductor Location
Ref. No. Location
IC1 C-4
Q1 B-2
Q2 B-2
23 4
A
1
B
C
D
E
12
(12)
1-675-921-
11
(11)
SW1
-1
-2
SW1
POWER
OFF
R
ON
D4
POWER
D4
R16
R23
R14
R24
R4
R3
R20
R5
R6
R9
R7
R8
R10
R15
R22
R12
R11
R13
R2
R1
R21
JW4
C1
C2
C7
C4
C3
C8
C5
C6
D1
D2
B
C
E
Q2
B
C
E
Q1
C25 C13 C12
C15
C16
C19
C20
C21
C18
C17
C26
C27
R19 R18
R17
C10
C9
C22
C23
10
1
5
IC1
RV1
VOLUME
RV1-2
RV1-1
JW1
JW6
JW2
C11
FU1
US MODEL
EXCEPT
US MODEL
DC IN 15V
JK1
L1
JK2
R OUT
SP1
SPEAKER
(L-CH)
–
+
+ –
RED
WHT
RED
WHT
BLK
P1
(INPUT)
RH BOARD
Last digit: -12
Last digit: -11
Ver 1.1 2001.07

SRS-A57
Ver 1.1 2001.07
2-2. SCHEMATIC DIAGRAM
– 6 –– 5 –
Note:
• All capacitors are in F unless otherwise noted. pF:  F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in and 1/4W or less unless otherwise
specified.
•: B+ Line.
• Power voltage is dc 15V and fed with regulated dc power
supply from external power voltage jack.
• Voltages are dc with respect to ground under no-signal
conditions.
• Voltages are taken with a VOM (Input impedance 10 M).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.

R24
1k
2.5A
Last digit: -12
Last digit: -11

– 7 –
SECTION 3
EXPLODED VIEW
NOTE :
• -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.
• The mechanical parts with no reference
number in the exploded views are not
supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 4-225-536-01 FOOT,RUBBER
2 X-3378-878-1 CABINET (R) ASSY, FRONT
3 X-3378-877-1 CABINET (L) ASSY, FRONT
4 4-224-723-01 SPACER
5 4-224-721-01 KNOB(VOL)
6 4-224-722-01 KNOB(POWER)
7 3-045-507-01 CUSHION (A)
8 4-226-147-01 HOLDER, POWER
9 4-226-146-01 HOLDER, VOLUME
*10 A-4541-197-A RH BOARD, COMPLETE (US)
*10 A-4541-200-A RH BOARD, COMPLETE (EXCEPT US)
11 3-045-508-01 CUSHION (B)
12 4-224-718-01 CABINET (L), REAR
13 1-791-865-11 CORD(WITH PLUG) (INPUT)
14 4-224-719-01 CABINET (R), REAR
15 1-791-864-11 CORD(WITH PLUG) (R-CH SPEAKER INPUT)
16 1-792-607-11 CORD, SPEAKER
SP1 1-529-542-11 SPEAKER (L-CH)
SP2 1-529-542-11 SPEAKER (R-CH)
not supplied
#1
#1#2 #2
#2
#3
#3
#3
#3
#3
#3
#2
#2
#2
#2
1
3
1
2
6
5
10
11
11
14
11
11
12
13
15
4
9
7
7
8
16
SP1
SP2

– 8 –
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.
• 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
ordering 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
• Abbreviation
CND : Canadian
SP : Singapore
AUS : Australian
HK : Hong Kong
C&SA : Central and South America
Les composants identifiés par une
marque 0sont critiques pour la sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
When indicating parts by reference num-
ber, please include the board.
The components identified by mark 0
or dotted line with mark 0are critical
for safety.
Replace only with part number specified.
SECTION 4
ELECTRICAL PARTS LIST
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
*A-4541-197-A RH BOARD, COMPLETE (US)
*A-4541-200-A RH BOARD, COMPLETE (EXCEPT US)
*****************************
7-685-645-79 SCREW +P 3X6 TYPE2 NON-SLIT
< CAPACITOR >
C1 1-124-903-11 ELECT 1uF 20% 50V
C2 1-124-903-11 ELECT 1uF 20% 50V
C3 1-126-958-11 ELECT 0.33uF 20% 50V
C4 1-126-958-11 ELECT 0.33uF 20% 50V
C5 1-124-903-11 ELECT 1uF 20% 50V
C6 1-124-903-11 ELECT 1uF 20% 50V
C7 1-126-964-11 ELECT 10uF 20% 50V
C8 1-126-233-11 ELECT 22uF 20% 50V
C9 1-126-964-11 ELECT 10uF 20% 50V
C10 1-126-964-11 ELECT 10uF 20% 50V
C11 1-126-942-61 ELECT 1000uF 20% 25V
C12 1-124-478-11 ELECT 100uF 20% 25V
C13 1-126-964-11 ELECT 10uF 20% 50V
C15 1-126-767-11 ELECT 1000uF 20% 16V
C16 1-126-767-11 ELECT 1000uF 20% 16V
C17 1-162-294-31 CERAMIC 0.001uF 10% 50V
C18 1-162-294-31 CERAMIC 0.001uF 10% 50V
C19 1-162-294-31 CERAMIC 0.001uF 10% 50V
C20 1-162-294-31 CERAMIC 0.001uF 10% 50V
C21 1-164-159-21 CERAMIC 0.1uF 50V
C22 1-162-294-31 CERAMIC 0.001uF 10% 50V
C23 1-162-294-31 CERAMIC 0.001uF 10% 50V
C25 1-164-159-21 CERAMIC 0.1uF 50V
C26 1-164-159-21 CERAMIC 0.1uF 50V
C27 1-164-159-21 CERAMIC 0.1uF 50V
< DIODE >
D1 8-719-911-19 DIODE 1SS119
D2 8-719-911-19 DIODE 1SS119
D4 8-719-945-66 LED SLP190B-51 (POWER)
< FUSE >
FU1 1-532-780-21 FUSE, MICRO (2.5A 125V) (US)
< IC >
IC1 8-759-452-80 IC LA4600
< JACK >
JK1 1-794-046-11 JACK,DC(POLARITY UNIFIED TYPE)
(DC IN 15V)
JK2 1-793-817-11 JACK (R OUT)
< COIL >
L1 1-419-586-21 COIL, LINE FILTER
< TRANSISTOR >
Q1 8-729-245-89 TRANSISTOR 2SC2458
Q2 8-729-245-89 TRANSISTOR 2SC2458
< RESISTOR >
R1 1-247-843-11 CARBON 3.3K 5% 1/4W
R2 1-247-843-11 CARBON 3.3K 5% 1/4W
R3 1-249-420-11 CARBON 1.8K 5% 1/4W
R4 1-249-420-11 CARBON 1.8K 5% 1/4W
R5 1-247-843-11 CARBON 3.3K 5% 1/4W
R6 1-247-843-11 CARBON 3.3K 5% 1/4W
R7 1-249-430-11 CARBON 12K 5% 1/4W
R8 1-249-430-11 CARBON 12K 5% 1/4W
R9 1-249-421-11 CARBON 2.2K 5% 1/4W
R10 1-249-421-11 CARBON 2.2K 5% 1/4W
R11 1-249-429-11 CARBON 10K 5% 1/4W
R12 1-249-429-11 CARBON 10K 5% 1/4W
R13 1-249-407-11 CARBON 150 5% 1/4W
R14 1-249-407-11 CARBON 150 5% 1/4W
R15 1-249-429-11 CARBON 10K 5% 1/4W
R16 1-249-416-11 CARBON 820 5% 1/4W
R17 1-249-417-11 CARBON 1K 5% 1/4W
R18 1-249-417-11 CARBON 1K 5% 1/4W
R19 1-249-417-11 CARBON 1K 5% 1/4W
R20 1-249-421-11 CARBON 2.2K 5% 1/4W
R21 1-249-413-11 CARBON 470 5% 1/4W
R22 1-249-417-11 CARBON 1K 5% 1/4W
R23 1-249-417-11 CARBON 1K 5% 1/4W
R24 1-249-417-11 CARBON 1K 5% 1/4W
(Last digit -12)
< VARIABLE RESISTOR >
RV1 1-225-279-11 RES, VAR, CARBON 50K/50K (VOLUME)
RH
Ver 1.1 2001.07

– 9 –
Ref. No. Part No. Description Remark
SRS-A57
< SWITCH >
SW1 1-692-040-11 SWITCH, PUSH (1 KEY) (POWER)
**************************************************************
MISCELLANEOUS
**************
13 1-791-865-11 CORD (WITH PLUG) (INPUT)
15 1-791-864-11 CORD (WITH PLUG) (R-CH SPEAKER INPUT)
16 1-792-607-11 CORD, SPEAKER
SP1 1-529-542-11 SPEAKER (L-CH)
SP2 1-529-542-11 SPEAKER (R-CH)
**************************************************************
ACCESSORIES & PACKING MATERIALS
*******************************
01-473-851-11 ADAPTOR, AC (AC-S1510) (US,CND,C&SA)
01-473-852-11 ADAPTOR, AC (AC-S1510) (AEP,SP)
01-473-853-11 ADAPTOR, AC (AC-S1510) (UK,HK)
01-475-756-11 ADAPTOR, AC (AC-S1510) (AUS)
3-044-671-11 MANUAL, INSTRUCTION (ENGLISH,SPANISH)
(US)
3-044-671-21 MANUAL,INSTRUCTION
(ENGLISH,FRENCH,GERMAN,SPANISH,DUTCH,
SWEDISH,ITALIAN,PORTUGUESE)(EXCEPT US)
*3-703-044-26 LABEL, CAUTION (US)
**************************************************************
**************
HARDWARE LIST
**************
#1 7-685-104-19 SCREW +P2X6 TYPE2 NON-SLIT
#2 7-685-645-79 SCREW +P3X6 TYPE2 NON-SLIT
#3 7-685-648-79 SCREW +P3X12 TYPE2 NON-SLIT
The components identified by
mark !or dotted line with mark
!are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque !sont critiques pour
la sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
RH
Ver 1.1 2001.07

SRS-A57
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver. Date Description of Revision
1.1 2001.07 RH board change (1-675-921-11 t 1-675-921-12). (ECN-TAB00495)
1.0 2000.02 New