Sony SRF-S54 / SRF-S56 (serv.man3) Service Manual ▷ View online
SERVICE MANUAL
SRF-S54/S56
SUPPLEMENT-1
File this supplement with the service manual.
E Model
Chinese Model
9-874-198-81
Ver. 1.1 2006.10
Subject: Change of MAIN board (Suffix-12)
1.
NEW/FORMER DISCRIMINATION
In this set, MAIN board has been changed in the midway of production.
Printed wiring board and schematic diagram of new type, and changed
parts list are described in this supplement-1.
Refer to original service manual for other information.
Printed wiring board and schematic diagram of new type, and changed
parts list are described in this supplement-1.
Refer to original service manual for other information.
Former : 1-685-791-11
New : 1-685-791-12
–MAIN Board (Conductor Side) –
2
SRF-S54/S56
2.
DIAGRAMS
•
Note for Printed Wiring Board and Schematic Diagram
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
•
All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
•
Power voltage is dc 1.5V and fed with regulated dc power
supply from battery terminal.
supply from battery terminal.
•
Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(detuned) conditions.
no mark : FM
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
•
Signal path.
F
: FM
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
z
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
SRF-S54/S56
3
3
SRF-S54/S56
2-1. PRINTED WIRING BOARD – MAIN Board –
:Uses unleaded solder.
B
C
D
E
1
2
3
4
5
6
A
C22
S1
C9
CT1
CT2
R18
L3
C27
C35
C38
C33
C32
S2
(STEREO/MONO)
MONO ST
R16
E C B
Q1
MAIN BOARD
(COMPONENT SIDE)
(12)
12
1-685-791-
RV1
MAIN BOARD
(CONDUCTOR SIDE)
(12)
12
1-685-791-
R13
R12
L6
L7
L5
C1
C41
TP1
(RF IN)
C11
C13
C12
C45
C15
C14
C8
L8
C40
C10
R3
C4
C3
C7
C48
C6
C47
C5
C44
C2
IC1
C29
C28
TP5
(VCO)
TP4
(OSC)
C23
R1
R4
C25
C26
R5
C20
C18
R17
C19
R9
C17
R10
R7
R8
IC2
C37
C36
IC3
C31
C30
C21
L1
CV1
L4
L2
C24
J1
-1
-2
S1
(POWER, MEGABASS)
OFF
ON
MEGABASS
1
5
10
6
1
7
14
8
30
16
1
15
CV1-2
CV1-1
TUNE
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC. 1.5V
VOLUME
-1
-2
+
+
+
+
+
+
+
+
+
+
SRF-S54/S56
4
4
SRF-S54/S56
2-2. SCHEMATIC DIAGRAM – MAIN Board –
J1
L5
C28
C29
C38
R7
C19
C20
C21
R17
C22
C17
R4
R5
C27
C4
C40
L8
C5
C6
C7
C23
CV1-1
C1
CV1-2
C9
C44
R18
C14
C13
C10
R3
C36
C37
C33
C32
R12
R13
L7
L6
RV1
IC2
IC3
IC1
L3
VCO
L1
FM RF
L2
FM 2ND
OSC
FM 1ST OSC
L4
S2
C8
C35
C26
C25
C12
C11
C15
R8
R10
C18
Q1
S1-2
TP1
S1-1
CT1
CT2
C45
R16
R1
C2
C31
C30
C3
C24
0.47
0.47
22
6.3V
470k
R9
220k
0.047 1000p
0.1
2.2k
1
0.47
0
0
220
4V
0.22
100p
0.22
0.01
0.01
C47
4700p
C48
4700p
100p
10p
C41
8p
22p
0.1
47k
1
10
4V
4V
1
10
100p
100p
100
4V
100
4V
100k
100k
10k/10k
LA3550M
LA4537M
CXA1129N
1
220
4V
10
4V
2.2
6.3V
1
4.7
4V
100p
470k
220k
0.47
2SA1576A
(RF IN)
100p
1k
220
4.7
4V
0.1
0.1
1
4700p
100V
IN
1
IN
2
H
P
1
H
P
2
LPIN
L
P
G
A
IN
LP
O
U
T
O
U
T1
O
U
T2
D
E
TIN
D
ETO
U
T
R
EF
V
C
C
G
N
D
OUT1
GND
OUT2
MUTE
SW
POWER
SW
IN1
PRE
IN2
REF
GND
FM
R
F
IN
IN
TV
R
F
+V
C
C
FE
FM
R
F
IM
A
G
E
A
D
J
A
G
C
O
L
FM
2N
D
O
S
C
O
S
C
A
M
TU
N
IN
D
P
LL
V
C
O
V
C
O
C
TR
L
R
C
H
L C
H
P
LL 1
P
LL 2
G
N
D
FM
IN
P
O
1
P
O
2
S
T
IN
D
IN
M
P
X
O
U
T
D
ET
M
U
TE
A
G
C
+V
C
C
O
S
C
TV
IS
T
TV
IS
T
O
S
C
A
FC
A
G
C
IN
A
M
R
F
G
N
D
FE
VCC
AMP
HEADPHONE
DRY BATTERY
1PC. 1.5V
ON
OFF
(POWER,MEGABASS)
MEGABASS
S1
RIPPLE
FILTER
-1
-2
VOLUME
AMP
BASS BOOST
FM RF AMP,
IF AMP,MIX,
AF AMP
CV1
TUNE
(STEREO/MONO)
ST
MONO
OSC,DET,
SIZE"AAA"
(IEC DESIGNATION R03)
1
µH
1
µH
1
µH
1
µH
TP5
(VCO)
TP4
(OSC)
Display
