Sony STR-DE875 / STR-DE975 Service Manual ▷ View online
11
11
STR-DE875/DE975
– DISPLAY/POWER SECTION –
• Signal Path
• R-CH is omitted due to same as L-CH
: FM
: CD/SACD
: DVD/LD (DIGITAL)
RESET
IN2
8
12
+V OUT2
POWER AMP
IC551
9
NF2
LIMITER
Q421
11
-V OUT2
LIMITER
Q422
BOOSTER
Q423
BOOSTER
Q424
CURRENT
DETECT
Q425,426
AF POWER
PROTECT
Q427
IN1
6
2
+V OUT1
5
NF1
LIMITER
Q521
3
-V OUT1
LIMITER
Q522
BOOSTER
Q523
BOOSTER
Q524
CURRENT
DETECT
Q525,526
IN+
1
6
+V OUT
POWER AMP
IC601
2
IN-
LIMITER
Q621
5
-V OUT
LIMITER
Q622
BOOSTER
Q623
BOOSTER
Q624
CURRENT
DETECT
Q625,626
D752
PROTECT
SWITCH
Q751-753
RELAY
DRIVER
Q701
RY701
RELAY
DRIVER
Q431
RY401
D432
RELAY
DRIVER
Q531
RY501
D532
RELAY
DRIVER
Q631
RY601
D632
3
1
RELAY
DRIVER
Q681
RY681
L
R
SR
SL
C
R-CH
R-CH
R-CH
PHONES
TM601
TM501
AUDIO
OUT
J306
20
PROTECTOR
15
HP_RY
16
SP_A_RY
18
REAR_RY
17
CENTER_RY
19
WOOFER_RY
RV102
ENCODER
3
1
FUNCTION_JOG_1B
11
FUNCTION_JOG_1A
10
RV101
ENCODER
3
1
VOL_JOG_2B
12
VOL_JOG_2A
13
PW_ON/OFF
62
S161
SPK_SEL
14
S151
55
RSTX
60
VOLT_DETEC_STOP
66
SIRCS
REMOTE
CONTROL
RECEIVER
2
1
IC103
+5V
REG
D921-924
AC
IN
T902
RY911
D926
D927
D925
RELAY
DRIVER
Q911
Q921
VOLTAGE
DET
D861-864
-5V
REG
3
2
+5V
REG
3
1
-7V
REG
3
2
+7V
REG
1
3
ANALOG
+7V
VIDEO
+5V
VIDEO
-5V
IC811
IC812
IC814
IC815
PW_RY
22
SUB-T
41
RELAY
+B
D851-854
240V
220V
120V
0V
VOLTAGE
SELECTOR
D875:E
S901
58
57
X0
X1
X1101
16.5MHz
FL1
FL2
L
SL
SL
C
SW
A
MUTING
1
POWER
MUTING
Q721,722
119
AC MUTE
J701
FLUORESCENT
INDICATOR TUBE
FL101
112
FL DIN/F1
111
FL CLK
113
FL LAT/F2
114
FL DRV.CLR
28
DIN
30
CLK
31
LAT
32
CL
2 23
G1-22
1,70 37
P1-35
16
DATA
17
CLK
18
STB
19
CLR
22
1
FL1
FL2
4
2ND_DATA
3
2ND_CLK
6
LED_DRV_CE
FUNCTION
KEY
AD1
132
S111-117
S101-107
FUNCTION
KEY
AD2
133
FUNCTION
KEY
AD3
134
S121-127
S118
FUNCTION
KEY
AD4
135
S131-136
FUNCTION
KEY
AD5
136
S141-146
B
C
D
RESET
SYSTEM CONTROLLER
IC1101(3/3)
AF POWER
PROTECT
Q527
AF POWER
PROTECT
Q627
2
1
FRONT
SURROUND
CENTER
5
7
21
HP_CTRL
D101-117
5
LED_DRV_CL
DE975
S147
DE975
RV103
ENCODER
3
1
CURSOR_JOG_3B
8
CURSOR_JOG_3A
7
BUFFER
Q1106
+3.3V
REG
3
1
2
1
IC1021
ANALOG
-7V
D871
D872
+12V
REG
3
1
3
1
TUNER
+12V
IC1061
T901
+3.3V REG
Q821
+3.3V
REG
3
1
IC1071
TUNER
+3.3V
+3.3V
(IC303)
F901
JW809
F902
AC
OUTLET
J911
F904
D801
4
Ω
8
Ω
IMPEDANCE
SELECTOR
S801
D805
D804
+B
-B
-B SW
Q723,724
+30V REG
Q801
+B SW
Q912,913
FL101
+30V
POWER AMP
-B
+5V
REG
3
1
IC1031
+2.5V
REG
3
1
IC1051
+2.5V
IC1011 PIN1
+3.3V
REG
3
1
IC1041
+3.3V
+5V
REG
3
1
IC1001
ANALOG
+5V
+5V (STBY)
SPEAKERS
SUB
WOOFER
IC1011
IC1111
+3.3V (STBY)
(IC1101)
SIRCS OUT
3
3
1
2
1
2
6
6
4
5
4
5
8
8
9
9
10
10
11
11
12
12
13
13
+5V (STBY)
30 ,10,9, 7
IC101
FL DRIVER
IC102
LED DRIVER
5
SDA
6
99
100
SCL
EEPROM.SDA
EEPROM.SCL
IC1131
EEPROM
(CURSOR)
FUNCTION
MASTER VOLUME
SPEAKERS
2ND_DATA
2ND_CLK
IC305
IC304
IC1151
IC1161
FRONT
12
12
STR-DE875/DE975
3-3. PRINTED WIRING BOARD – DIGITAL SECTION –
• See page 8 for Circuit Boards Location.
IC1051
IC1303
IC1354
IC1353
IC1352
IC1351
IC1171
IC1302
IC1301
IC1305
IC1306
IC1401
IC1402
IC1501
IC1551
IC1552
IC1403
IC1404
IC1405
IC1451
IC1001
IC1141
IC1131
IC1101
IC1011
IC1021
IC1061
IC1041
IC1031
IC1151
IC1161
IC1201
IC1071
IC1502
IC1304
IC1111
R1071
R1072
R1577
R1578
R1579
R1576
R1514
R1553
R1320
R1360
R1321
R1082
CNP101
1
CNP105
1
CN 805
(PAGE 17)
CNP814
(PAGE 27)
FM
75
Ω
COAXIAL
AM
CNS201
(PAGE 23)
CNP810
(PAGE 17)
CNP808
(PAGE 17)
1
3
1
3
1
3
1
3
Ref.No.
Location
D1001
F-10
D1102
E-7
D1103
F-7
D1105
F-6
D1301
B-7
D1302
A-7
IC1001
E-7
IC1011
G-10
IC1021
G-9
IC1031
G-10
IC1041
G-10
IC1051
F-2
IC1061
G-10
IC1071
D-10
IC1101
F-7
IC1111
F-8
IC1131
E-7
IC1141
E-7
IC1151
G-7
IC1161
G-6
IC1171
A-10
IC1201
D-10
IC1301
B-9
IC1302
B-10
IC1303
A-7
IC1304
A-9
IC1305
B-9
IC1306
B-8
IC1351
A-10
IC1352
A-9
IC1353
A-9
IC1354
A-8
IC1401
B-7
IC1402
C-7
IC1403
C-7
IC1404
D-7
IC1405
D-7
IC1451
C-7
IC1501
C-8
IC1502
C-9
IC1551
D-8
IC1552
D-9
Q1101
G-8
Q1102
E-8
Q1103
F-6
Q1104
F-6
Q1105
F-6
Q1106
E-8
• Semiconductor
Location
13
13
STR-DE875/DE975
3-4. SCHEMATIC DIAGRAM – DIGITAL SECTION (1/4) –
• See page 9 for Waveform. • See page 29 for IC Block Diagrams.
IC B/D
IC B/D
IC B/D
IC B/D
14
14
STR-DE875/DE975
3-5. SCHEMATIC DIAGRAM – DIGITAL SECTION (2/4) –
• See page 9 for Waveform. • See page 30 for IC Block Diagrams.
IC B/D
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