Sony STR-DB1070 / STR-DB870 Service Manual ▷ View online
17
17
Ver 1.1
STR-DB870/DB1070
MODE CONTROL
INTERFACE
SERIAL INPUT
INTERFACE
MULT-FUNCTION
X8 OVER SAMPLING
DIGITAL FILTER
D/A
CONVERTER
LPF
AMP
LPF
AMP
LPF
AMP
LPF
AMP
MUTING
Q651
MUTING
Q601
MUTING
Q501
MUTING
Q451
MUTING
Q701
F
(Page 16)
SDO1,
SDO2,
SDO3
SDO2,
SDO3
G
(Page 16)
BCKO,
SCKOUT
SCKOUT
I
(Page 16)
LRCKO
H
(Page 16)
SDO4
K
(Page 16)
S MUTE
TRIM
LEVEL SHIFT
CIRCUIT
CENTER
SUB WOOFER
MULTI CH IN
CENTER
SURROUND BACK
MULTI CH IN1
E
(Page 16)
2NDL
J307
SUB WOOFER
(DB1070)
D
(Page 16)
CD IN
RELAY
DRIVE
Q815
RY805
MUTING
DRIVE
Q813
P
(Page 19)
CLK, DATA, LAT
R
(Page 19)
CLK, DATA, LAT
L
(Page 18)
L OUT
LEVEL SHIFT
CIRCUIT
O
(Page 18)
SL OUT
LEVEL SHIFT
CIRCUIT
J401
SUB WOOFER
J402
L
R
FRONT
L
R
SURROUND
LEVEL SHIFT
CIRCUIT
M
(Page 18)
C OUT
N
(Page 18)
SB OUT
R-CH
SR-CH
RY808
RY809
RY810
RY807
RELAY
DRIVE
Q825
RELAY
DRIVE
Q826
J305
J304
46
45
47
40
38
DATA2
DATA1
DATA3
BCK
SCKI
41
LRCK
BCKO
SCKOUT
SDO2
SDO1
SDO3
34
MDI
35
MC
36
ML
37
RST
33
MDO
ML
RST
MDO
14
12
10
9
VOUT1
VOUT3
VOUT5
VOUT6
2 DATA
1 BCK
16 SCK
3 LRCK
15
ML
14
MC
13
MD
7
VO L
D/A
CONVERTER
IC1202
BCKO
SCKOUT
AUDIO SELECT
IC101
26 5.1L
35 5.1SL
39 5.1C
31 5.1SW
4
6.0
27 6.1L
36 6.1SL
40 6.1C
3
6.1SB
32 6.1SW
41 2NDL
37
COUT
24
LOUT
6
SBOUT
30 D/ASW
25
34 D/ASL
29
SWOUT
33
SLOUT
21
CLK
22
DATA
23
LAT
38 D/AC
5
D/ASB
7
IN
5
OUT
3
4
TRIM
11
DATA
12
LAT
10
CLK
DATA
LAT
CLK
14
IN
16
OUT
18
TRIM
17
TRIM
11
DATA
12
LAT
10
CLK
7
IN
5
OUT
3
TRIM
4
TRIM
DATA
LAT
CLK
11
DATA
12
LAT
10
CLK
DATA
LAT
CLK
14
IN
16
18
17
OUT
TRIM
TRIM
14
IN
16
OUT
18
TRIM
17
TRIM
11
DATA
12
LAT
10
CLK
DATA
LAT
CLK
93 DA1LAT
92 DACINT
108 DA1DO
95 DACDI
94 DACCLK
119 DA2 LAT
ML
RST
MDO
MDI
MCI
120
CD DIRECT
4
WOOFER RY
8
PRE RY
SYSTEM
CONTROLLER
IC1703 (4/7)
CLK
DATA
LAT
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
: TUNER
: AUDIO IN (ANALOG)
: AUDUI IN (DIGITAL)
MDI
MCI
FRONT
L
(DE870)
MULTI CH IN2
(DE1070)
SURROUND
L
Q
(Page 16)
2CHL
28 2CHL
FRONT
L
SURROUND
L
LINE AMP
IC1221
LINE AMP
IC1241
LINE AMP
IC1261 (2/2)
LINE AMP
IC1261 (1/2)
11
VOUT4
13
VOUT2
R-CH
R-CH
D/AL
LINE AMP
IC1281
(DB1070)
(DB1070)
(DB1070)
(DB870)
BUFFER
IC602 (1/2)
BUFFER
IC402
BUFFER
IC602 (2/2)
BUFFER
IC502
BUFFER
IC702
ELECTRICAL
VOLUME
IC401
ELECTRICAL
VOLUME
IC601
ELECTRICAL
VOLUME
IC501
ELECTRICAL
VOLUME
IC701
(DB1070)
-2
-1
(DB870)
J701
J403
SUB WOOFER
CENTER
(DB1070)
(DB870)
SURROUND
BACK
PRE OUT
(DB1070)
L
R
D/A CONVERTER
IC1201
6-3.
BLOCK DIAGRAM – AUDIO CONTROL Section –
18
18
Ver 1.1
STR-DB870/DB1070
6-4.
BLOCK DIAGRAM – POWER AMP Section –
+
+
–
–
TM501
PRE
DRIVE
DRIVE
BIAS
CIRCUIT
REG/PROTECTOR
BIAS
Q440
BOOSTER
Q402
BOOSTER
Q403
L
6
1
13 14
15
3
2
5
B+
B–
B–
POWER AMP
IC403
POWER AMP
IC603
(Page 17)
L OUT
INPUT
–VEOUT
+VEOUT
NF
PRE
DRIVE
DRIVE
BIAS
Q640
BOOSTER
Q602
BOOSTER
Q603
M
8
11
12
9
(Page 17)
C OUT
INPUT
–VEOUT
+VEOUT
PRE
DRIVE
DRIVE
BIAS
Q690
BOOSTER
Q652
BOOSTER
Q653
N
6
3
2
(Page 17)
SB OUT
INPUT
–VEOUT
+VEOUT
NF
NF
VCC VCC
VEE
PRE
DRIVE
DRIVE
BIAS
CIRCUIT
REG/PROTECTOR
BIAS
Q540
BOOSTER
Q502
BOOSTER
Q503
O
8
1
13 14
11
12
9
B+
B–
POWER AMP
IC503
EEPROM
IC1701
SYSTEM CONTROLLER
IC1703 (5/7)
(Page 17)
SL OUT
INPUT
–VEOUT
+VEOUT
NF
VCC VCC
VCC VCC
VEE
VEE
13 14
15
15
1
5
BIAS
CIRCUIT
REG/PROTECTOR
OVER LOAD
DETECTOR
IC803,
Q801, 804
AF POWER
SENSOR
Q406
CURRENT
DETECT
Q404, 405
AF POWER
SENSOR
Q606
CURRENT
DETECT
Q604, 605
AF POWER
SENSOR
Q656
CURRENT
DETECT
Q654, 655
AF POWER
SENSOR
Q506
CURRENT
DETECT
Q504, 505
MUTING
DRIVE
Q811, 812
5
99
6
100
117
5
1
118
2
3
6
10
SDA
SCL
EEPROM SDA
EEPROM SCL
AC MUTE
REAR RY
H. P IN
PROTECTOR
SP A RY
H/P RY
CENTER RY
SB RY
RELAY
DRIVE
Q823
RY806
R-CH
RELAY
DRIVE
Q808
RY802
RELAY
DRIVE
Q809
RY803
RELAY
DRIVE
Q807
RY801
D803
D802
PHONES
CENTER
SURROUND BACK
L
R
J749
+
+
–
–
TM502
–
–
+
+
R-CH
R-CH
SURROUND
L
R
(DB1070)
(DB1070)
LIMITER SWITCH
Q806
AF POWER
PROTECTOR
Q802, 803,
Q805
FRONT
SPEAKERS
IMPEDANCE
USE 4-6
Ω
(DB1070)
–1
• R-CH is omitted due to same as L-CH.
• SIGNAL PATH
: TUNER
SPEAKERS
IMPEDANCE
USE 4-6
Ω
–2
19
19
Ver 1.1
STR-DB870/DB1070
6-5.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL Section –
CONTROL
Q302
C
(Page 15)
SW3, SW4
SW3
SW4
J301 (1/2)
Y
PBB-Y
Y
J301(2/2)
Y
OUTPUT
CIRCUIT
CIRCUIT
CONTROL S I/O SWITCH
IC751
O2-2
OUTPUT
CIRCUIT
CIRCUIT
INPUT
CIRCUIT
TV/SAT
CTRL S
CTRL S
STATUS IN
J754
VIDEO 1
CTRL S
OUT
J756
DVD/LD
CTRL S
OUT
J755
MONITOR
CTRL S
IN
J753
INH
BUFFER
Q752, 753
BUFFER
Q1702
REMOTE
CONTROL
RECEIVER
IC1701
I/O BUFFER
Q1701
D1701
CONTROL A1
II
J303
Q810
D1801
S1704
SHIFT
REGISTER
PARALLEL
DATA
OUTPUT
1
–
7, 9
–
15, 20
–
29
D1601 – 1619,
D1901 – 1905
LED DRIVE
IC1602
1, 70
–
37
2
–
23
FL1601
FLUORESCENT
INDICATOR
TUBE
F1
F2
HVO25
–
HVO59
HVO24
–
HVO3
P01 – P35
G1 – G22
FL DISPLAY DRIVE
IC1601
S1701
ON
OFF
SPEAKERS
S1702, 1703,
S1941 – 1945
(S1941:DB1070)
S1911 – 1918
S1901 – 1908
S1921 – 1925
S1801 – 1803,
S1931 – 1934
A
B
RV1901
(JOG DIAL)
A
B
FUNCTION
RV1801
A
B
RV1601
SYSTEM CONTROLLER
IC1703 (6/7)
134
AD3
135
AD4
136
AD5
11
C. JOG
12
C. JOG
13
F. JOG
14
F. JOG
15
V. JOG
16
V. JOG
66 SIRCS
41 M STSTUS
64 MBUS DVD
65 BUS VIDEO
63 MBUS TV
111
CLK
50
AUDIO SPLIT LED
112
DIN
113
LAT
114
CLR
62
POWER
17
SP. SW
132
AD1
133
AD2
86 A1 IN
87 A1 OUT
22
CLK
21
DATA
24
F. SW LAT
115
VOL IC LAT
39
LED CR
38
LED CE
LED CLR
LED LAT
19
CLR
18
STB
17
CLK
16
DATA
LED2
LED3
LED4
LED1
30 CLK
28 DIN
31 LAT
32 CL
FL4
FL1
FL3
FL2
FL4
FL1
FL3
FL2
14
4
15
11 10 9 6
13
12
3
5
1
2
VIDEO SELECT
IC303
11
O2-1
10
13
IN1
6
O3-1
7
O3-2
4
2
IN3
OUT1
BUFFER
Q750, 751
(US, Canadian)
(DB1070)
B
(Page 15)
DATA, CLK
R
(Page 17)
CLK, DATA, LAT
P
(Page 17)
CLK, DATA, LAT
J
(Page 16)
SCLK, SDAT, SLAT
CLK
DATA
FUNC LAT
VOL LAT
CLK
DATA
LAT
CLK
DATA
FUNC LAT
VOL LAT
CLK
DATA
LAT
CLK
DATA
LED CLK
LED DATA
COMPONENT
VIDEO
TV/SAT IN
COMPONENT
VIDEO
DVD/LD IN
PRR-Y
PBB-Y
PRR-Y
LINE AMP
IC301 (1/2)
LINE AMP
IC301 (2/2)
LINE AMP
IC302
INH
PBB-Y
PRR-Y
COMPONENT
VIDEO
MONITOR OUT
57 X1
58 X2
X1701
16.5MHz
LEVEL SHIFT
IC805
LEVEL SHIFT
IC804
AUDIO
SPILIT
SPILIT
LEVEL SHIFT
IC1610
LEVEL SHIFT
IC1603
MASTER
VOLUME
VOLUME
I
/ 1
• SIGNAL PATH
: VIDEO IN
20
20
Ver 1.1
STR-DB870/DB1070
+5V
REGULATOR
Q824
+5V
+12V
REGULATOR
IC1301
+12V
(TUNER UNIT)
D POWER
SWITCH
Q1813, 1814
+3.3V
REGULATOR
IC1302
+3.3V
TUNER UNIT
RDS DECODER (IC303) B+
+5V
REGULATOR
IC1808
+5V
D/A, A/D CONVERTER
(IC1201, 1202, 1503) B+
+5V
REGULATOR
IC1801
+5V
(VIDEO)
D POWER
SWITCH
Q1811, 1812
+5V
REGULATOR
IC1802
+5V
REGULATOR
IC1807
+3.3V
REGULATOR
IC1806
+5V
DIGTAL OPITICAL
RECEIVER/TRANSCEIVER
(IC1401 – 1404) B+
+2.6V
REGULATOR
IC1805
D+2.6V
D+3.3V
D1803
D1801
+3.3V
REGULATOR
IC1804
+5V
REGULATOR
IC1803
STBY +5V
RECT
D54 – 57
D58
D52
D53
T2
POWER
TRANSFORMER
SYSTEM
CONTROLLER
IC1703
(7/7)
AC POWER
DETECT
Q54
– 5V
REGULATOR
Q902
V POWER
SWITCH
Q904, 905
– 5V
(VIDEO)
F1
F2
FLUORESCENT INDICATOR TUBE
(FL1601)
+32V
FL DISPLAY DRIVE
(IC1601) B+
+32V
REGULATOR
Q903
RECT
D912, 913
– 15V
REGULATOR
IC802
– 15V
+15V
+15V
REGULATOR
IC801
+24V
(RELAY B+)
B+
B–
F905
F906
-2
-1
8
Ω
4
Ω
IMPEDANCE
SELECTOR
S901
T901
POWER
TRANSFORMER
MD2
MD0
SIN1
SOT1
RESET
GND
VDD
STBY +3.3V
52
MD2
54
MD0
110
SIN1
109
SOT1
42
D POWER
43
V POWER
55
RSTX
49
SUB T. PORT
60
STOP
18
POWER RY
(FOR CHECK)
CN1107
POWER AMP
(IC403, 503, 603)
MD2
MD0
SIN1
SOT1
RSTX
B+ SWITCH
Q1801, 1802
B+ SWITCH
Q1803, 1804
B+ SWITCH
Q1810
+5V
SYSTEM CONTROLLER
(IC1703) B+
RESET SIGNAL
GENERATOR
IC1702
B+ SWITCH
Q52, 53
RECT
D903 – 906
RECT
D908
D908
F904
F903
RECT
D914
D914
(US, Canadian)
(US, Canadian)
EXCEPT
US, Canadian
F1
F49
VOLTAGE
SELECTOR
VS49 (1/2)
VS49 (1/2)
VOLTAGE
SELECTOR
VS49 (1/2)
VS49 (1/2)
(EXCEPT E2, E3)
(E2, E3)
(E2, E3)
RELAY
DRIVE
Q51
RY1
AC IN
F2
E2, E3,
Taiwan
Taiwan
EXCEPT
E2, E3,
Taiwan
Taiwan
US, Canadian, E2, E3,
Taiwan, Chinese
AC OUTLET
CNJ1
D+5V
• Abbrivation
E2 : 120 V AC area in E model
E3 : 240 V AC area in E model
E2 : 120 V AC area in E model
E3 : 240 V AC area in E model
6-6.
BLOCK DIAGRAM – POWER SUPPLY Section –
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