Page 1
SRS-A57
SERVICE MANUAL
Ver 1.0 2000.02
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
Australian Model
E Model
MICROFILM
ACTIVE SPEAKER SYSTEM
Page 2
SECTION 1
GENERAL
This section is extracted from
instruction manual.
– 2 –
Page 3
SECTION 2
DIAGRAMS
SRS-A57
2-2. SCHEMATIC DIAGRAM2-1. PRINTED WIRING BOARDS
1
2
3 4
D4
A
POWER
RV1
VOLUME
[RH BOARD]
SW1
POWER
OFF
R
B
ON
C
D
SW1
-1
-2
C25
R21
FU1
US MODEL
C4
R2
R1
C17
EXCEPT
US MODEL
JW6
D4
R20
R5
Q2
R3
R7
RV1-1
C26
C27
RV1-2
R19 R18
C10
C9
R17
C15
C5
R8
JW4
D2
C12
C16
C6
R22
R23
C19
IC1
10
C20
5
C21
1
R9
C1
R6
Q1
B
C
E
R14
RED
C2
R12
B
R11
C
E
R13
C3
WHT
JW1
JW2
C18
BLK
D1
C7
C22
R10
R15
R16
C8
C13
C23
L1
R4
C11
+ –
RED
WHT
1-675-921-
P1
(INPUT)
02
E
z
Semiconductor Location
Ref. No. Location
D1 B-3
D2 B-3
D4 A-2
Ref. No. Location
IC1 C-4
Q1 B-2
Q2 B-2
JK1
DC IN 15V
Note:
• X : parts extracted from the component side.
• b : Pattern on the side which is seen.
11
(11)
–
+
SP1
JK2
R OUT
SPEAKER
(L-CH)
– 3 – – 5 –– 4 –
Note:
• 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/
specified.
• U : B+ Line.
• Pow er voltage is dc 15V and f ed with regulated dc pow er
supply from external power voltage jack.
• Voltages are dc with respect to ground under no-signal
conditions.
• V oltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Signal path.
F
4
W or less unless otherwise
Page 4
SECTION 3
EXPLODED VIEW
SECTION 4
ELECTRICAL PARTS LIST
RH
SRS-A57
RH
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.
#3
12
11
16
#2
#2
not supplied
8
7
9
7
10
11
11
14
SP1
3
#3
#3
13
#3
#3
6
#2
#2
#2
SP2
#2
#3
15
11
4
#1#2
#1
5
2
1
1
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)
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.
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 1-532-781-11 FUSE, MICRO (3.15A 125V) (US)
< IC >
• SEMICONDUCTORS
In each case, u : µ , for example :
uA.... : µ A.... , uPA.... : µ PA....
uPB.... : µ PB.... , uPC.... : µ PC....
uPD.... : µ PD....
• CAPACITORS
uF : µ F
• COILS
uH : µ H
• Abbreviation
CND : Canadian
SP : Singapore
AUS : Australian
HK : Hong Kong
C&SA : Central and South America
JK1 1-794-046-11 JACK,DC(POLARITY UNIFIED TYPE)
JK2 1-793-817-11 JACK (R OUT)
L1 1-419-586-21 COIL, LINE FILTER
Q1 8-729-245-89 TRANSISTOR 2SC2458
Q2 8-729-245-89 TRANSISTOR 2SC2458
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
RV1 1-225-279-11 RES, VAR, CARBON 50K/50K (VOLUME)
The components identified by mark 0
or dotted line with mark 0 are critical
for safety.
Replace only with part number specified.
Les composants identifiés par une
marque 0 sont critiques pour la sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
When indicating parts by reference number, please include the board.
< JACK >
(DC IN 15V)
< COIL >
< TRANSISTOR >
< RESISTOR >
< VARIABLE RESISTOR >
Ref. No. Part No. Description Remark
< SWITCH >
SW1 1-692-040-21 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
*******************************
0 1-473-851-11 ADAPTOR, AC (AC-S1510) (US,CND,C&SA)
0 1-473-852-11 ADAPTOR, AC (AC-S1510) (AEP,SP)
0 1-473-853-11 ADAPTOR, AC (AC-S1510) (UK,HK)
0 1-475-756-11 ADAPTOR, AC (AC-S1510) (AUS)
* 3-703-044-26 LABEL, CAUTION (US)
**************************************************************
#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
3-044-671-11 MANUAL, INSTRUCTION (ENGLISH,SPANISH)
3-044-671-21 MANUAL,INSTRUCTION
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
(ENGLISH,FRENCH,GERMAN,SPANISH,DUTCH,
SWEDISH,ITALIAN,PORTUGUESE)(EXCEPT US)
**************
HARDWARE LIST
**************
Les composants identifiés par une
marque ! sont critiques pour
la sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
(US)
IC1 8-759-452-80 IC LA4600
– 6 – – 8 –– 7 –
9-927-655-11
Sony Corporation
Personal Audio Division Company
Printed in Japan © 2000.2
2000B0279-1
Published by General Engineering Dept.
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