Sony STR-DH550 / STR-DH750 Service Manual ▷ View online
STR-DH550/DH750
STR-DH550/DH750
36
36
5-21. SCHEMATIC DIAGRAM – STANDBY DCDC Board –
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
STANDBY DCDC BOARD
(CHASSIS)
8
3.3
8.4
0.8
8.7
1
0.8
0.8
7
3.6
1
6.7
13.1
2
0.8
7
3.6
1
7.8
13.1
3.4
0.8
7
3.6
1
10.5
13.1
6.1
8.4
8.4
0
0.8
3.3
0.8
0
0.7
C1907
0.0022u
C1914
0.1u
0.1u
0.1u
C1904
0.1u
C1905
0.1u
C1902
10u
0.1u
C902
C1909
0.1u
C908
0.047u
C1903
10u
C970
0.1u
C962
0.1u
C961
0.1u
C960
0.1u
C971
0.1u
C975
10u
C976
10u
C1912
22u
C1913
22u
C1910
0.001u
C977
0.1u
C907
0.047u
C978
0.0033u
0.1u
C980
0.0033u
C979
C982
22u
C981
22u
C1976
3300u 25V
C963
3300u
16V
C969
1u 50V
CL906
CL905
CL913
CL914
CL908
CL912
CL904
CL903
CL903
CL901
CL902
CL996
CL985
CL907
CL984
CL986
CL942
CL915
CNP901
3P
1 LIVE
3 NEUTRAL
CNP902
4P
1 LIVE
4 NEUTRAL
CNP903
3P
1 220V(E51)/NC(BR)
3 120V(E51)/127V(BR)
5 240V(E51)/220V(BR)
CN941
4P
1
R3 AC (YEL)
2
NC
3
CENTER TAB
4
R3 AC (GRN)
CN1901
12P
1 PWR RLY
2 STOP
3 STBY +3.3V
4 STBY GND
5 R3 12V
6 +2V
7 +3.3V
8 +6V
9 +6V
10 +2V
11 +3.3V
12 +6V
D905
BAV70
D923
D3SBA60-7101
D906
DA2J10100L
ET1900
F940
F902
F941
3.15A 250V
3.15A 250V
FH904
FH901
FH902
FH903
T6.3AL 250V
JS906
0
JS904
0
JS901
0
L910
10uH
L1902
10uH
L1901
10uH
Q951
RELAY
DRIVER
2PD601ART
Q952
AC OFF DETECT
2PD601ART
R972
12
R971
15
R978
15k
2.2k
R974
10k
R1903
56k
R1930
56k
R1931
56k
R1932
47k
R973
4.7
R1905
22
R1901
33k
R1907
100k
R1909
33k
R1908
4.7k
R960
10k
R961
10k
R963
10k
R1906
75k
R979
24k
R981
RY951
S901
VOLTAGE
SELECTOR
1
2
3
4
5
6
7
8
9
10
11
12
IC902
RT7237ALGSP
1
BOOT
2
VIN
3
SW
4
GND
FB
5
COMP
6
EN
7
SS
8
9
IC1905
RT8293ALZSP
1
BOOT
2
VIN
3
SW
4
GND
FB
5
COMP
6
EN
7
SS
8
9
1
VO
2
FB
3
GND
4
NC_4
EN
5
NC_6
6
NC_7
7
VCC
8
9
T902
POWER TRANSFORMER
(SUB)
W1900
120/127v
220/240V
+6V REG.
IC1905
C1927
0.0022u
C1934
C1924
0.1u
C1925
0.1u
C1922
10u
C1929
0.1u
C1923
10u
C1932
22u
C1933
22u
C1930
0.001u
L1904
10uH
L1903
10uH
4.7k
R1913
4.7
R1915
22
R1911
22k
R1917
100k
R1919
10k
R1918
10k
R1916
IC1906
RT8293ALZSP
1
BOOT
2
VIN
3
SW
4
GND
FB
5
COMP
6
EN
7
SS
8
9
+3.3V REG.
IC1906
C1947
0.01u
C1954
C1944
0.1u
C1945
0.1u
C1942
10u
C1949
0.1u
C1943
10u
C1952
22u
C1953
22u
C1950
0.001u
L1906
10uH
L1905
10uH
4.7k
R1923
4.7
R1925
22
R1921
0
R1927
100k
R1929
18k
R1928
12k
R1926
IC1907
RT8293ALZSP
1
BOOT
2
VIN
3
SW
4
GND
FB
5
COMP
6
EN
7
SS
8
9
+2V REG.
IC1907
+3.3V REG.
(STBY)
IC902
IC901
BD00GC0WEFJ-SE2
+3.3V REG.
(STBY)
IC901
D903
D901
D901 ~ D904
GS1G
D902
D904
F901
*1
220V
r
OFF
r
127V
>023S
HDMI BOARD
CN3513
(Page 33)
>007S
MAIN BOARD
(2/7)
CN950
(Page 25)
>008S
MAIN BOARD
(2/7)
CN951
(Page 25)
>019S
MAIN BOARD (4/7)
CN2005
(Page 27)
POWER
TRANSFORMER
(MAIN)
T901
~ AC IN
DH550
DH750
BR
BR
*1
T3.15L 250V
(AEP, AUS, UK)
8A 125V
(US, CND)
T4AL 250V
(BR)
T6.3AL 250V
(MX, TW)
Note: IC902 (DH750) on the STANDBY DCDC board cannot ex-
change with single. When this part on the STANDBY DCDC
board is damaged, exchange the entire mounted board.
board is damaged, exchange the entire mounted board.
Ver. 1.2
STR-DH550/DH750
STR-DH550/DH750
37
37
5-22. PRINTED WIRING BOARD – PANEL Section –
• See page 14 for Circuit Boards Location. •
: Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
T100
1
54
2
53
38
50
ND101
IC100
EN100
S101
EN101
S102
L102
2
1
28
29
CN102
S103
8
9
2
1
CN103
S104
S105
S108
D108
S109
S110
C116
C117
C118
C120
C123
C124
C127
C131
C137
R139
R151
LP001
LP002
4
8
21
23
29
31
33
27
12
17
34
14 15
35
10
5
1
11
3
CN100
LP003
2
1
9
8
CN2550
1
2
7
8
CN2551
JR
CL126
CL110
D106
K/A
A
K
K/A
A
K
CL117
CL120
CL105
Q101
D104
A
K
CL115
CL130
CL114
L101
CL121
CL106
CL116
CL127
CL111
Q103
E
CL1
18
CL125
CL128
CL1
12
CL123
CL108
IC101
CL122
CL107
CL129
CL113
CL124
CL109
Q104
E
CL119
CL104
CL142
CL133
CL136
CL131
CL145
CL137
CL146
CL132
CL143
CL134
CL141
CL144
CL139
CL138
CL140
CL135
R140
R128
R135
R153
R145
R133
R150
R142
R132
R143
R134
R129
R144
R136
R149
R130
R147
R154
R146
R131
R148
R137
R1
15
C143
R122
R1
19
R123
R1
16
R127
R1
14
R1
17
R125
R112
R124
R118
R126
R1
13
R121
FB100
C121
C1
15
C128
C1
14
C133
C132
C125
C138
C134
C122
C135
C142
C130
C112
C140
C129
C141
C119
Q102
E
R158
R160
R159
R156
R157
JR
JR174
JR
JR187
JR
JR150
JR
JR139
JR
JR195
JR
JR143
JR
JR158
JR
JR177
D107
D109
A
K
JR
JR194
JR
JR182
JR
JR111
JR
JR186
JR
JR149
JR
JR138
JR
JR166
JR
JR
JR
JR
JR
JR
JR
JR193
JR
JR157
JR
JR112
JR
JR135
JR
JR185
JR
JR148
JR
JR
JR137
JR
JR
JR165
JR
JR
JR192
JR JR142
JR
JR156
JR
JR
JR
JR180
JR JR176
JR
JR190
JR
JR
JR134
JR144
JR
JR
JR172
JR
JR153
JR
JR
JR147
JR
JR102
JR
JR110
JR
JR109
JR
JR113
JR
JR107
JR
JR
JR100
JR
JR104
JR
JR
JR133
JR JR162
JR
JR171
JR
JR184
JR152
JR
JR146
JR
JR188
JR183
JR
JR
JR159
R165
R162
JR JR141
JR
JR108
JR
JR105
JR164
JR191
JR
JR140
JR154
JR178
JR
JR173
JR
JR106
C149
C148
JR136
JR
JR189
JR
JR103
R170
R169
R167
R168
R171
C113
KA
JR151
JR JR181
JR
JR
JR170
JR101
CL148
CL147
JR145
JR160
D103
R120
JR
JR163
R141
DISPLAY BOARD
NFC ICON PC BOARD
(DH750)
(COMPONENT SIDE)
NFC ICON PC BOARD
(DH750)
(CONDUCTOR SIDE)
1-889-539-
12
(12)
1-889-703-
21
(21)
1-889-703-
21
(21)
PURE DIRECT
INPUT SELECTOR
MASTER VOLUME
DIMMER
DISPLAY
INPUT MODE
NIGHT MODE
MUSIC
MOVIE
A.F.D./2CH
T100
MAIN BOARD
CN2004
(Page 22)
>006P
VACUUM FLUORESCENT DISPLAY
CONNECTION PAIRING
BLUETOOTH
NFC
MODULE
POWER
KEY
BOARD
CN108
(Page 41)
>010P
FRONT
JACK
BOARD
CN105
(Page 39)
>011P
¾
¾
Ú
DH550
¾
DH750
Ú
¾
Ver. 1.2
STR-DH550/DH750
STR-DH550/DH750
38
38
5-23. SCHEMATIC DIAGRAM – PANEL Section –
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
DISPLAY BOARD
NFC ICON
PC BOARD
PC BOARD
(DH750)
3.5
3.5
3.5
7
3.5
3.5
3.5
3.3
3.3
-0.2
5.6
-0.2
5.5
0.1
5
4.8
5
3.2
0
2
4.7u
C114
220p
C148
220p
C149
C130
0.022u
0.1u
C122
C128
0.01u
33p
C119
33p
C121
100p
C115
0.1u
C143
1u
C1
12
75
R167
75
R168
75
R169
75
R170
75
R1
12
75
R171
0.0022u
C125
C138
0.1u
R151
8.2k
R139
8.2k
0.0033u
C132
0.0033u
C133
0.1u
C141
0.1u
C140
C129
0.0047u
0.1u
C113
16V
100u
C124
50V
10u
C117
16V
22u
C118
16V
22u
C120
50V
1u
C123
6.3V
220u
C131
50V
C137
10u
50V
C127
47u
50V
1u
C116
CL137
CL138
CL139
CL140
CL141
CL142
CL143
CL144
CN103
9P
1
STBY_3.3V
2
NFC_SPICLK
3
NFC_DATA
4
NFC_SEL
5
NFC_IRQ
6
NFC_SW
7
NFC_RFDET
8
DGND
9
NC
BA
V99-215
D106
BA
V99-215
D107
SA10QA04
D103
SA10QA04
D109
D104
UDZVTE-172.0B
INPUT SELECTOR
EN100
1
2
3
5
0uH
FB100
L101
47uH
L102
47uH
ND101
VACUUM FLUORESCENT DISPLAY
1
2
4
5
12
14
15
17
21
23
27
29
31
33
34
8
10
35
53
54
PDTC114ET
Q103
B
B
E
C C
QS5W2TR
SWITCHING TRANSISTOR
SWITCHING
TRANSISTOR
CONTROL
SWITCHING
TRANSISTOR
CONTROL
Q101
2SB1710TL
Q104
1k
R135
R165
0
R149
680
R120
0
4.7k
R132
2.2k
R133
2.2k
R134
100k
R156
1k
R130
2.2k
R131
4.7k
R116
100
R154
4.7k
R117
4.7k
R115
6.8k
R127
10
R113
R140
680
100k
R129
10k
R145
22k
R146
1k
R128
100
R141
47k
R118
1k
R122
47k
R119
47k
R124
10k
R123
68k
R153
4.7k
R121
6.2k
R125
R150
470
R160
100
R159
100
R158
100
R157
0
33k
R114
R137
100
R136
100
56k
R126
VO
1
GND
2
VCC
3
4
NJM2904M
IC101
A_OUTPUT
1
A-INPUT
2
A+INPUT
3
GND
4
B+INPUT
5
B-INPUT
6
B_OUTPUT
7
V+
8
DC CONVERTER
TRANSFORMER
T100
1
2
4
5
6
6
7
8
9
3
CL128
CL127
CL126
CL125
CL124
CL123
CL130
CL129
CL121
CL120
CL119
CL131
CL118
CL117
CL116
CL115
CL133
CL114
CL113
CL134
CL112
CL135
CL136
CL136
CL111
CL110
CL132
CL122
29P
CN102
1
PUREDIRECT
2
AD2
3
AD1
4
POWERKEY
5
LED_ON
6
LED_STBY
7
AGND
8
+7V
9
DCAC_SIGNAL
10
VOL_JOG
11
INPUT_JOG
12
NFC_RFDET
13
NFC_SW
14
NFC_IRQ
15
NFC_SEL
16
NFC_DATA
17
NFC_SPICLK
18
STBY_3.3V
19
SIRC_IN
20
FL_STB/LATCH
21
DGND
22
FL_CLK
23
DGND/ZONE POWER
24
FL_DATA
25
FL EN
26
FL GND
27
FL_BK/R3_15V
28
FL GND
29
DCDC_6V
SLI-325DCT31W
D108
2PD601ART
Q102
LED DRIVER
220
R143
0
R162
100k
R144
10k
R142
CL147
0.1u
C142
CL109
CL108
CL107
CL106
CL107
CL106
CL105
CL104
CL146
CL145
11P
CN100
1
AD1
3
POWER_BUTTON
4
DGND
5
NC
6
+3.3V_STBY
7
LED_ON
8
LED_STBY
9
AGND
10
MIC_JACK
11
AGND
CL148
F-
AGND
F+
PIN 1 - F+
PIN 2 - F+
PIN 4 - LGND
PIN 5 - PGND
PIN 8 - VH
PIN 10 - SW
PIN 12 - VIN
PIN 14 - OSC
PIN 15 - VDD
PIN 17 - K2
PIN 21 - K1
PIN 23 - DOUT
PIN 27 - DIN
PIN 29 - CLK
PIN 31 - STB
PIN 33 - KS1
PIN 34 - KS2
PIN 53 - F-
PIN 54 - F-
5
4
A.F.D/2CH
S108
MOVIE
S109
MUSIC
S110
NIGHT MODE
S105
NFC MODULE
DISPLAY
S103
DIMMER
S102
PURE DIRECT
S101
0.0033u
C135
0.0033u
C134
MASTER VOLUME
EN101
1
2
3
5
10k
R147
22k
R148
4
AUDIO AMP
IC101
>017S
MAIN
BOARD
(4/7)
CN2004
(Page 27)
>024S
POWER KEY
BOARD
CN108
(Page 41)
>025S
FRONT JACK
BOARD
CN105
(Page 39)
PNA4823M03S0
IC100
REMOTE CONTROL
SIGNAL RECEIVER
IC100
DH750
S104
CONNECTION PAIRING
BLUETOOTH
(DH750)
INPUT MODE
(DH550)
LED
(PURE DIRECT)
8P
CN2551
1
VDD_3.3V
2
SPICLK(CLOCK)
3D
AT
A
4
SEL
5I
R
Q
6S
W
7R
FD
ET
8G
N
D
9P
CN2550
1
STBY_3.3V
2
NFC_SPICLK
3
NFC_DA
TA
4
NFC_SEL
5
NFC_IRQ
6
NFC_SW
7
NFC-RFDET
8
DGND
9
NC
Ver. 1.1
STR-DH550/DH750
STR-DH550/DH750
39
39
5-26. PRINTED WIRING BOARD – TUNER1 Board –
• See page 14 for Circuit Boards Location. •
: Uses unleaded solder.
5-24. PRINTED WIRING BOARD – FRONT JACK Board –
• See page 14 for Circuit Boards Location. •
: Uses unleaded solder.
5-25. SCHEMATIC DIAGRAM – FRONT JACK Board –
1
A
B
C
2
3
4
5
6
FRONT JACK BOARD
(CHASSIS)
J100
AUTO CAL MIC
CL175
C151
220u
10V
CN106
4P
1
2
3
4
CL173
C150
0.1u
C154
0.22u
R193
100
CL170
CL172
C152
0.1u
0
R190
D126
DZ2J062M0L
0
R191
0
R192
CL171
D129
BAV99-215
D130
BAV99-215
CN105
3P
AGND
MIC_JACK
AGND
CN104
5P
1
GND
2
DP
3
DM
4
VBUS
5
SHIELD BUS
GND
D+
D-
VBUS
1
2
3
ET101
1
2
3
DC5V 1A MAX
>025S
DISPLAY
BOARD
CN100
(Page 38)
>022S
MAIN BOARD
(7/7)
CN2900
(Page 30)
1
A
B
C
D
E
F
2
3
4
5
6
7
8
ET101
1
5
CN104
1
3
CN105
5
6
7
1
4
CN106
C151
J100
D126
K
A
D130
A/K
A/K
KA
KA
D129
R190
C152
R191
C150
R192
JR
JR
JR200
JR
JR JR201
CL170
CL171
CL172
CL173
CL175
R193
C154
FRONT JACK BOARD
1-889-540-
12
(12)
MAIN BOARD
CN2900
(Page 22)
>005P
DISPLAY BOARD
CN100
(Page 37)
>011P
(CHASSIS)
DC5V 1A MAX
AUTO CAL MIC
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
IC101
IC102
1
2
4
3
X101
L101
FL101
I
G
O
2
1
8
9
CN101
1
3
CN103
A001
CN102
CN104
R106
R105
R103
R101
R110
C105
C101
C111
C1
12
D103
C109
C103
R107
C108
C102
C107
L105
D102
D101
C106
JR
JR101
R104
JR
JR102
JR
JR105
R108
R109
JL1
13
JR
JR109
JR
JR112
C1
10
R1
13
JR
JR106
L103
L104
JL107
JL1
17
JL112
JL118
JL102
JL108
JL115
JL106
JL109
JL104
JL103
JL105
JL1
16
JL1
10
JL111
JL114
JL131
JL125
JL124
JL135
JL127
JL132
JL130
JL121
JL133
JL128
JL134
JL129
JL126
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1-885-134-
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MAIN BOARD
CN2003
(Page 22)
>004P
Ver. 1.1
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