Sony MHC-W555 / STR-W555 Service Manual ▷ View online
5-2. BLOCK DIAGRAMS
– TUNER SECTION – (AEP, UK model)
– 13 –
STR-W555
– 14 –
TM1
AM
ANTENNA
FM 75
Ω
COAXIAL
ANT IN
ST +10V
Q5
VT
FE1
FM FRONT END
IF OUT
CF1
10.7MHz
IF AMP
Q1, 2
CF2
10.7MHz
IF AMP
Q3, 4
CF3
10.7MHz
1 FM IN
REG
FM/AM MPX
IC41
17
10
09
PLL
IC21
11
FM
TUNED
LEVEL
15 13
30
14
RV42
2 12
14
7
10
X42
450kHz
D41
FM SD
ADJ
OSC.BUFF
AM/FM
VCO STOP
IF BUFF
MUTE
AM
SD
AM
TUNED
LEVEL
12
RV41
2
AM IF
IFT41
4
9
AM IF
DET
STEREO
TUNED
7
6
X41
10.7MHz
MUTE
STEREO
TUNED
23
22
FM DET OUT
MPX IN
21
20
OUT L
OUT R
LPF
RCH
19 AMP IN L
AMP
OUT
L
17
ST L
4
5
5
3
ST-CE
COM-DIN
COM-CLK
COM-DATA
A
MAIN
SECTION
CE
DI
CL
DO
1 24
X21
4.5MHz
AM MIX
AM
SD
6
28
5
2
15
17
16
14
12
13
29
26 25 24 23
22
21 20
9
LW SW
Q9
27
FE2
MW/LW FRONTEND
Q11
MW
SW
MW
SW
Q12
MW
SW
MW
SW
Q14
LW SW
Q13
MW
SW
MW
SW
AM OSC
AM RF IN
FM AFC
• R CH: Same as L ch
• SIGNAL PATH
: FM
: MW
• SIGNAL PATH
: FM
: MW
RDS DATA
RDS INT
(Page 17)
6
FM
VT1
MW
MW
AM OSC
FM
VCO STOP
FM/AM IF
XIN
XOUT
3
4
13
14
2
16
IC1751
RDS DECODER
IC1752
X1751
4.332MHz
5
7
FM
ADJ
26
24
AM
DET
OUT
STR-W555
– 15 –
– 16 –
– TUNER SECTION – (East European, CIS model)
22 MPX IN
21
OUT L
LPF
19
AMP
IN
L
AMP
OUT
L
17
4
5
5
3
6
ST-CE
COM-DIN
COM-CLK
COM-CLK
COM-DATA
A
MAIN
SECTION
CE
DI
CL
CL
DO
• R CH: Same as L ch
• SIGNAL PATH
: FM
: MW
• SIGNAL PATH
: FM
: MW
D42
D43
13
FM LOW
SUB CARRIER
PEAK
L1701
CT1701
TP1701
2
3
20
RV1701
SUB CARRIER
LEVEL
7
6
9
10
POLAR
DECODER
IC1701
IN
POUT
L OUT
R OUT
SUB IN
MON
VCO
ST IND
VCO
STOP
18
17
R CH
13
12
POLAR/PILOT
SWITCH
IC1702
14
9 11
L IN
L OUT
C
A
R OUT 4
R CH
SWITCH
Q1701
SWITCH
Q1702
SWITCH
Q1703
D1704
D1703
D1701
D1702
ST-L
STEREO
TUNED
TUNED
MUTE
TP1702
RV1702
VCO
(Page 17)
TM1
AM
ANTENNA
FM 75
Ω
COAXIAL
ANT IN
ST +10V
Q5
VT
FE1
FM FRONT END
IF OUT
CF1
10.7MHz
IF AMP
Q1-4
CF3
10.7MHz
1 FM IN
REG
FM/AM MPX
IC41
17
10
09
PLL
IC21
11
FM
TUNED
LEVEL
15 13
30
14
RV42
2 12
14
7
8
10
X42
450kHz
D41
AM/FM
VCO STOP
IF BUFF
MUTE
AM
SD
AM
TUNED
LEVEL
12
RV41
2
AM IF
IFT41
IFT41
4
9
AM IF
FM
DET
DET
STEREO
TUNED
7
6
X41
10.7MHz
1 24
X21
4.5MHz
AM MIX
AM
SD
6
28
5
2
15
17
16
14
12
13
29
26 25 24 23
22
21 20
9
LW SW
Q9
27
FE2
MW/LW FRONTEND
Q11
MW
SW
MW
SW
Q12
MW
SW
MW
SW
Q14
LW SW
Q13
MW
SW
MW
SW
AM OSC
AM RF IN
FM
VT1
MW
MW
AM OSC
FM
VCO STOP
FM/AM IF
IF REQ
XIN
XOUT
3
OUT R
RCH
20
ADJ
FM SD
ADJ
OSC.BUFF
FM AFC
26
23
FM DET OUT
24
AM
DET
OUT
POLA
L IN
L IN
– 17 –
– 18 –
– MAIN SECTION –
STR-W555
5
3
2
1
SPEANA
SELECTOR
IC505
SPEANA
BPF FILTER
IC506
4
15
22
25
9 10
26
27
27
55
56
RESET
LED
ON/OFF
SWITCH
Q531-535,
Q538-540
Q538-540
LED
ON/OFF
SWITCH
Q502-512
SWITCH
Q501
IC891
D504
DATA
CLK
LAT
RST
D507
PANEL
LED
+5.6V
RESET
IC502
ECHO
LEVEL
LEVEL
MIX
MIC
MIC
MIC 1
J6001
EXCEPT EA3,JE
(Japan Product)
(Japan Product)
EA3,JE (Japan Product)
J6002
EA3, JE
(Japan Product)
(Japan Product)
MIC 2
MIC LEVEL
MUTE
Q183
BUFFER
Q132
DBFB
SELECTOR
IC112
KEY
MATRIX
MULTI JOG
STATION
S653
VOLUME
S652
SLIDING
SENSOR
SENSOR
IC504,Q513
REMOTE
SENSOR
SENSOR
IC503
MUTE
SWITCH
Q121
35
36
09
41
94
SPEANA CONT
Y
Z
SPEANA0
SPEANA1
I2C DATA
I2C CLK
DATA OUT
DATA IN
LAT
CLK
ST MUTE
STREO
TUNED
RDS DATA
RDS CLK
RDS CLK
AV IN
POWER ON/OFF
KEY0
I
KEY3
JOG A
JOG B
VOL A
VOL B
SENSOR IN
SIRCSN
GEQ DATA
VA CS
Y1
Y2
Z1
Z2
4
16
17 f1
f2
15 f3
14 f4
13 f
LINE
IN
GEQ CLK
37
38
32
5
6
16
G0
G15
DATA
CLK
CLK
CS
RESET
DATA
CLK
CLK
LAT
RST
RV6001(2/2)
MIC AMP
IC6001(2/2)
ECHO PROCESSOR
IC6002
FL601
DISPLAY CONTROL
IC601
FLUORESCENT
INDICATOR
TUBE
15
14
13
8
7
6
LPF 2 OUT
LPF 1 IN 1
1
RV6001(1/2)
MIC AMP
IC6001(1/2)
3
2
10
MASTER CONTROL
IC501
92
90
89
93
B
POWER
SECTION
COM DIN
ST L
COM DATA
ST CE
COM CLK
MUTE
STEREO
TUNED
AEP,UK
RDS DATA
RDS INT
POWER ON/OFF
A
TUNER
AEP, UK, EE, CIS
EXCEPT AEP, UK,
EE, CIS
FM/AM TUNER
TUNER UNIT IS
SUPPLIED AS
THE ASSEMBLED
BLOCK
SECTION
(Page 14, 16)
(Page 19)
(Page 19)
• R CH: Same as L ch
• SIGNAL PATH
: FM
: AUDIO(AV INPUT)
: MD/VIDEO
: PB
: VIDEO(AV INPUT)
: REC
: CD
• SIGNAL PATH
: FM
: AUDIO(AV INPUT)
: MD/VIDEO
: PB
: VIDEO(AV INPUT)
: REC
: CD
• Abbreviation
EA3 : Saudi Arabia model.
20
C
POWER
SECTION
16
43
10
11
21
18
19
42
17
86
87
88
88
R-CH
R-CH
AV SWITCH
Q6301
96
97
GEQ LAT
95
LEVEL B
3
LEVEL A
2
2
1
3
DBFB B2
5
DBFB B1
6
42
41
33
1
2
3
9
8
13
CLOCK
DELAY
IC401
AMP
IC113(1/2)
SELECTOR
IC402
32 34 30
3
5
10
9
11
15
R-CH
VIDEO
L-CH
S/W
MUTE
L IN
TA MUTE
38
36
VOLUME
IC111(2/2)
40
AMP
IC113(2/2)
39
60
4
3
57
58
TA MUTE
LED
LED
FL DATA
FL CLK
FL LAT
RESET
FL RESET
ACCUT
MOTOR 1
MOTOR 2
X2
X1
X501
5MHz
X502
32kHz
XT2
XT1
7
63
I
67
70
72
73
50
I
54
57
I
62
.
.
.
.
.
82
83
83
84
85
13
14
M
M891
PANEL
MOTOR
PANEL
OPEN/CLOSE
S892
MOTOR
DRIVER
DRIVER
VF1
VF2
AC1
AC2
28
I
31
2
1
CN101
J6301
J101
TO
HTC-W555
VIDEO
AUDIO L
AV INPUT
(VIDEO 2)
(VIDEO 2)
7
9
5
R-CH(REC R)
R-CH(CD R)
R-CH(PB R)
IIC DATA
IIC CLK
IIC CLK
AC1
AC2
6
17
13
14
16
69
65
68
SELECT
SWITCH
EQ
AMP
CD
V2
MD/V1
TC
TU
2
66
67
MICON
INTERFACE
1
3
1
5
7
1
2
14
4
12
13
2
LPF 1 IN
LPF 1 OUT
LPF 2 IN
LPF 2 OUT
12
I
1
64
I
61
59
I
33
31
I
23
S0
S35
JE : Tourist model.
SYSTEM
CONTROL
MD/
VIDEO 1
IN L
OUT L
AEP,UK
15
EQ
IC111(1/2)
BUFFER
Q401
STR-W555
– 19 –
– 20 –
– POWER SECTION –
• R CH : Same as L ch
• SIGNAL PATH
: FM
:VIDEO (AV INPUT)
• Abbreviation
EA3
SP
MY
JE
TW
AR
• SIGNAL PATH
: FM
:VIDEO (AV INPUT)
• Abbreviation
EA3
SP
MY
JE
TW
AR
: Saudi Arabia model.
: Singapore model.
: Malaysia model.
:Tourist model.
:Taiwan model.
:Argertine model.
: Singapore model.
: Malaysia model.
:Tourist model.
:Taiwan model.
:Argertine model.
R-CH
R-CH
R-CH
D751
D761
RY751
RY781
OVER LOAD
DET
Q952
OVER LOAD
SWITCH
Q851
POWER AMP
IC901
PROTECTOR
IC851
L-CH
LIN
S/W
VIDEO
TA MUTE
MUTE
POWER ON/OFF
E,EA3,SP,MY,AR,TW,JE
AC
IN
PHONES
J755
R-CH
MONITOR
OUT
J781
FRONT
SPEAKER
TB751
REAR
SPEAKER
TB201
M
M901
FAN
ST+10V
UNREG
+12V
+7V
+5.6V
+5V
D813
-7V
+B
-B
VG
Rch
MOTOR
MUTE
SWITCH
Q901
MUTE
Q181
SWITCH
Q853
D852,853
PROTECTOR
VCC ON
MUTE
ST+10V
REG
IC804
VOLTAGE
SELECTOR
S871
VF1
VF2
AC1
AC2
T901
POWER
TRANSFORMER
MAIN
SECTION
B
09
(Page 17)
8
1
4
3
1
L
6
7
2
20
15
RECT
D810,811
+7V REG
IC801
+5.6V REG
IC803
FAN MOTOR
REG
Q731,732
POWER ON
MUTE
Q852
RECT
D805-808
RECT
D801
D801
RECT
D802, 803
VG REG
Q801
3
1
3
1
3
2
-7V REG
IC802
VF1
VF2
AC1
AC2
R
+
–
+
–
MAIN
SECTION
C
(Page 17)
Click on the first or last page to see other MHC-W555 / STR-W555 service manuals if exist.