DOWNLOAD Sony STR-DH550 / STR-DH750 Service Manual ↓ Size: 5.92 MB | Pages: 80 in PDF or view online for FREE

Model
STR-DH550 STR-DH750
Pages
80
Size
5.92 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-dh550-str-dh750.pdf
Date
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Sony STR-DH550 / STR-DH750 Service Manual ▷ View online

STR-DH550/DH750
STR-DH550/DH750
17
17
5-3.  BLOCK  DIAGRAM  – AMP Section –
FL
POWER AMP
LIMITER
Q602, Q603
BOOSTER
Q600
CURRENT
DETECT
Q604
CURRENT
DETECT
Q605
BOOSTER
Q601
D600
D650
D800
D850
D700
D750
D550
RY350
RY380
TB501 (1/2)
TB501 (2/2)
FRONT A
R
L
+
-
+
-
J101
PHONES
FR
Q620
POWER AMP
Q622
Q624
Q625
Q670
Q672
Q674
Q675
Q720
POWER AMP
Q722
Q724
Q725
Q570
POWER AMP
Q572
Q574
Q575
Q770
Q772
Q774
Q775
Q820
Q822
Q824
Q825
Q870
Q872
Q874
Q875
LIMITER
Q652, Q653
BOOSTER
Q650
CURRENT
DETECT
Q654
CURRENT
DETECT
Q655
RELAY
DRIVER
Q929
BOOSTER
Q651
SBL
LIMITER
Q802, Q803
BOOSTER
Q800
CURRENT
DETECT
Q804
CURRENT
DETECT
Q805
BOOSTER
Q801
LIMITER
Q852, Q853
CURRENT
DETECT
Q854
CURRENT
DETECT
Q855
SL
LIMITER
Q702, Q703
BOOSTER
Q700
CURRENT
DETECT
Q704
CURRENT
DETECT
Q705
BOOSTER
Q701
LIMITER
Q752, Q753
BOOSTER
Q750
CURRENT
DETECT
Q754
CURRENT
DETECT
Q755
BOOSTER
Q751
SYSTEM CONTROL
IC2001 (3/6)
C
PROTECT
TEMP_SENSOR_2
TEMP_SENSOR_1
LIMITER
HP-R
Y
FRONT_SPK_R
Y
SBL_SBR_R
Y
C/SL_SR_R
Y
HP_DET
LIMITER
Q552, Q553
BOOSTER
Q550
CURRENT
DETECT
Q554
CURRENT
DETECT
Q555
PROTECTOR
Q320 ~ Q321,
Q323 ~ Q325
BOOSTER
Q551
TH251
TH252
SBR
SR
RELAY
DRIVER
Q350
RELAY
DRIVER
Q360
RELAY
DRIVER
Q355
RELAY
DRIVER
Q365
RY360
TB503
SURROUND BACK/ 
BI-AMP/ FRONT HIGH/ 
FRONT B
R
L
+
-
+
-
SPEAKERS IMPEDANCE USE 6-16Ÿ
RY355
TB502
SURROUND
R
L
+
-
+
-
RY365
D2304
D2302
D2303
CENTER
+
-
BOOSTER
Q850
BOOSTER
Q851
69
70
18
67 23 14
12 15
BRIDGEABLE_R
Y
11
SW_R
Y
13
4
‡6LJQDOSDWK
           : AUDIO
‡5FKLVRPLWWHGGXHWR
VDPHDV/FK
>004B
ANALOG AUDIO
SECTION
(Page 15)
DH750
BRIDGEABLE RELAY
>007B
DISPLAY/POWER
SECTION
(Page 20)
STR-DH550/DH750
STR-DH550/DH750
18
18
5-4.  BLOCK  DIAGRAM  – ANALOG VIDEO/USB Section –
4
5
VIN1
VIN2
VIDEO DRIVER  
IC200
OUT
VSW
1
6
22
21
DECODER
IC2900
USB_DP
USB_DM
25
LED_PLAY/LRCK/SPDIF
9
8
7
6
4
2
KEY_ROW3/SDA
KEY_ROW2/SCL
KEY_ROW1/BUSY
KEY_COL3/MCHNG
KEY_COL1/IRPT
O
RESETX
15
14
95
98
94
90
96
93
91
USB_SDA
USB_PCONT
USB_OVC
USB_SCL
USB_BUSY
USB_MCHNG
USB_IRPT
O
USB_RESET
HDMI CONTROLLER
IC2602 (1/2)
POWER CONTROL
IC2901
OVER VOLTAGE CONTROL
IC2902
11
10
9
APPLE_SDA
APPLE_SCL
APPLE_RST
2
6
7
APPLE_SDA
APPLE_SCL
APPLE_RST
APPLE AUTHENTICATION
COPROCESSOR
IC2603
99
98
VMUTE
VSEL-SW
29
P-CONT
SYSTEM CONTROL
IC2001 (4/6)
MUTE
PROTECTION
Q200 ~ Q201
XOUT_PLL
XIN_PLL
5
99
4
3
EN
FAULT
EN
>005B
DIGITAL SECTION
(Page 16)
MD0
Prog_VURX
SCK
Prog_VUTX
CN2601
1
5
4
3
PROGRAMMING JIG
(HDMI KSV)
73 Prog_VURX
71 Prog_VU_SCK
72 Prog_VUTX
47 MD0
64
BT-PCONT
65
BT_VUTX
66
BT_VURX
3.3V
BTRX
BTTX
CN2600
12
5
9
8
LCH_N
RCH_P
LCH_P
3
4
RCH_N
2
BT MODULE
3.3V VOLTAGE
CONTROL
Q2604
RCH-N
RCH-P
LCH-P
LCH-N
>001B
ANALOG AUDIO
SECTION
(Page 15)
J200 (1/2)
J200 (2/2)
VIDEO
VIDEO IN
VIDEO
SAT/CATV IN
VIDEO
MONITOR OUT
CN106
+D
-D
USB
STBY3.3V
X2900
16.9344MHz
‡6LJQDOSDWK
:  AUDIO (DIGITAL)
:  VIDEO
:  USB
DC5V 
   1A MAX
DH750
DH750
VOLTAGE
CONTROL
Q2600
STR-DH550/DH750
STR-DH550/DH750
19
19
5-5.  BLOCK  DIAGRAM  – DIGITAL VIDEO Section –
Ver. 1.1
35 R2X2+
DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)
HOT PLUG DET
CEC
+5V POWER
DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)
HOT PLUG DET
CEC
+5V POWER
DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)
HOT PLUG DET
CEC
+5V POWER
R2X2-
R2X1+
R2X1-
R2X0+
R2X0-
R2XC+
R2XC-
DSCL2
34
33
32
31
30
29
28
85
46 R3X2+
R3X2-
R3X1+
R3X1-
R3X0+
R3X0-
R3XC+
R3XC-
45
44
43
42
41
40
39
DSCL3
DSDA3
89
88
CBUS_HPD3
R4X2+
R4X2-
R4X1+
R4X1-
R4X0+
R4X0-
R4XC+
R4XC-
DSCL4
DSDA4
CBUS_HPD4
90
RX52+
RX52-
RX51+
RX51-
RX50+
RX50-
RX5C+
RX5C-
DSCL5
DSDA5
CBUS_HPD5
64
63
62
61
60
59
58
57
98
97
99
DSDA2
CBUS_HPD2
84
86
R2PWR5V
87
R3PWR5V
91
CEC
SP_SERIES
MUTE
R4PWR5V
95
HDMI RECEIVER
IC3514
DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)
HOT PLUG DET
CEC
+5V POWER
54
53
52
51
50
49
48
47
93
92
94
HDMI_MUTE
37
INITX
38
SPARTA_RST
36
MU_RST
43
HDMI CONTROLLER
IC2602 (2/2)
VU_RST
93
INITX
38
SYSTEM CONTROL
IC2001 (5/6)
/CS
1
SCK
6
DO
2
DI
5
EEPROM
IC3512
R5PWR5V
100
4
RESET
IC2601
D2604
9
D2601
D2602
D2603
159
T0X2+
DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)
HOT PLUG DET
CEC
+5V POWER
T0X2-
T0X1+
T0X1-
T0X0+
T0X0-
T0XC+
T0XC-
TXDSCL0
158
157
156
155
154
153
152
107
TXDSDA0
TX_HPD0
+5V
106
105
121-122, 124-128, 130, 136
MUTEOUT/GPIO9 129
RESET 69
XTALIN 113
XTALOUT  114
SS/GPIO2 117
SCLK/GPIO3 118
SD0/GPIO4 119
SD1/GPIO5 120
TV OUT
ARC
HDMI OUT
RESET SW
Q2602
RESET SW
Q2601
X3001
27MHz
PE2/X0 48
PE3/X1 49
X2600
4MHz
>006B
DIGITAL
SECTION
(Page 16)
CN3504
4
6
1
3
7
9
10
12
15
16
19
13
18
CN3200
4
6
1
3
7
9
10
12
15
16
19
13
18
CN3503
4
6
1
3
7
9
10
12
15
16
19
13
18
CN3501
4
6
1
3
7
9
10
12
15
16
19
13
18
CN3502
4
6
1
3
7
9
10
12
15
16
19
13
18
‡6LJQDOSDWK
:  AUDIO (DIGITAL)
:  VIDEO
HDMI IN
SAT/CATV
BD/DVD
(for AUDIO)
GAME
VIDEO
(MHL)
DC5V      1A MAX 
STR-DH550/DH750
STR-DH550/DH750
20
20
5-6.  BLOCK  DIAGRAM  – DISPLAY/POWER Section –
+12V
RECT
D923
RECT
D910-913
SYSTEM CONTROL
IC2001 (6/6)
VACUUM FLOURESCENT
DISPLAY
ND101
MASTER
VOLUME
ROTARY
ENCODER
EN101
S115
S108 ~ S110,
S111 ~ S114
S101 ~ S105
X2001
4MHz
F910
RY951
F911
REMOTE CONTROL
SIGNAL RECEVER
IC100
INPUT
SELECTOR
ROTARY
ENCODER
EN100
-7V
+HV
(VCC)
TO
AUDIO AMP
SECTION
-HV
(VCC)
+7V
+5V
+5V
F940
F941
+3.3V (DCDC)
+2V (DCDC)
+1.2V
+1.2V
+6V (DCDC)
STBY +3.3V
STBY +3.3V
D905
POWER
TRANSFORMER
(SUB)
T902
POWER
TRANSFORMER
(MAIN)
T901
F901
AC IN
RECT
D901 ~ D904
RECT
D921
RY920
F913
F912
F1
F2
+7V REG.
IC350
-7V REG.
IC352
+5V REG.
IC2300
+3.3V
+3.3V REG.
IC102
+5V REG.
IC2000
RELAY  DRIVER
Q920
+3.3V REG.
IC1906
+3.3V REG. (STBY)
IC902
+3.3V REG. (STBY)
IC901
+1.2V REG.
IC2402
+1.2V REG.
IC3517
+5V
F1
F2
+5V REG.
IC3513
+5V
+5V REG.
IC3511
+5V
+5V REG.
IC3519
+5V REG.
IC3518
+2V REG.
IC1907
+6V REG.
IC1905
RELAY  DRIVER
Q951
DC CONVERTER
TRANSFORMER
T100
SWITCHING
TRANSISTOR
Q101
LED DRIVER
Q102
LED
(PURE DIRECT)
D108
LED DRIVER
Q110
LED DRIVER
Q111
LED 
(ON/STBY)
D110
SWITCHING
TRANSISTOR
CONTROL
Q103 ~ Q104
AC OFF DETECT
Q952
4
PWR-RLY
42
FL-EN
58
PUREDIRECT
36
LED-ON
37
LED-STBY
66
STOP
31
29
27
45 FL_LAT
43 FL_CLK
44 FL_DATA
53 SIRC-IN
54 VOLUME_JOG
52 INPUT_JOG
56 POWER DET
55 AD_KEY1
57 AD_KEY2
48 X0
49 X1
DH750
DH550
F902
VOLTAGE
SELECTOR
S901
BR
BRIDGEABLE RELAY
>007B
AMP SECTION
(Page 17)
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