Sony STR-DG900 Service Manual ▷ View online
STR-DG900
13
13
STR-DG900
4-1. BLOCK DIAGRAM — TUNER/AUDIO SECTION —
SECTION 4
DIAGRAMS
28
29
30
29
30
34
31
31
22
VIDEO 3 IN/
PORTABLE AV IN
L
J2552
J2553
J4591
(2/2)
J2554
(1/2)
J301
J302
PHONO
AMP
IC301
R
R–CH
R–CH
R–CH
R–CH
L
R
AM
TN1
FM/AM TUNER UNIT
SYSTEM CONTROL
IC1101 (1/7)
L
R
L
R
L
-1
-2
-3
-4
-1
-2
-3
-4
R
L
R
L
PHONO
OUT
IN
IN
IN
R
L
R
R–CH
T.LAT
WOOFER_RY
VOL_IC DATA
VOL_IC CLK
TUNER_STEREO
TUNER_AUTO_STOP
TUNER_AUTO_STOP
TUNER_MUTE
TUNER_DO
33 TUNER_DATA
32 TUNER_SERIAL_CLK
32 TUNER_SERIAL_CLK
L–CH
R–CH
STEREO
TUNED
MUTING
CE
DO
DATA
CLOCK
MD/TAPE
SA-CD/CD
SUB
WOOFER
PRE
OUT
OUT
RELAY
DRIVER
Q351
J2551
RY351
XM L
XM R
SBL–CH
C–CH
SR–CH
R–CH
RY2300
SL–CH
L–CH
R–CH
L–CH
R–CH
11
14
14
116
117
117
7.1_DATA 1
7.1_CLK 2
FM 75Ω
COAXIAL
44
5
3
7
1
23
32
33
68
66
28
36
60
59
59
46
12
10
10
8
4
6
6
SUB
WOOFER
L
R
R–CH
R–CH
R–CH
R–CH
L
R
L
R
FRONT
OUT
ZONE 2
SURROUND
L
R
SUR BACK
CENTER
J304
J305
MULTI CH IN
ANTENNA
41
42
REAR RY
R–CH
88
87
85
84
86
81
SBR–CH
83
82
54
56
51
52
49
SW
SEL
C
SEL
SL
SEL
L
SEL
R–CH
R–CH
26
J2554
(2/2)
-1
-2
SUR
L
R
PRE OUT
27
R–CH
R–CH
22
45
R–CH
R–CH
R–CH
R–CH
R–CH
DIR
FUNCTION SELECT
IC401
AVCC
AVEE
+7V
–7V
-3
-4
-5
-6
AUDIO
AUDIO OUT
VIDEO 1
AUDIO IN
R–CH
L
R
38
-2
-3
-1
-2
L
R
R–CH
-3
-4
-3
-4
-1
-2
-3
-4
-5
-1
-2
-3
-4
-6
SEL
SW
MCU
I/F
SBL OUT
R–CH
SW OUT
C OUT
SL OUT
L OUT
R–CH
19
20
R–CH
R–CH
15
16
R–CH
R–CH
R–CH
TU+9V
• Signal path
: TUNER (FM/AM)
: VIDEO (AUDIO)
: CD (ANALOG)
• R
–
ch is omitted due to
same as L
–
ch.
SBL
SEL
SEL
L
R
R–CH
-1
-2
R–CH
XM
SECTION
D
2ND ROOM
VIDEO
SECTION
C
DIGITAL
SECTION
B
17
RELAY
DRIVE
Q2300
Q2300
RY300
RELAY
DRIVE
Q300
2
17
15
13
SEL
SW
INPUT SELECT
IC2560
LOGIC
V3L
V1L
V2L
V1L
V2L
TV L
DA
CLK
DVD L
AU INL
V2 OUTL
V1 OUTL
AU OUTL
22
23
AUDIO OUT
VIDEO 2
AUDIO IN
DVD
AUDIO IN
TV/SAT
AUDIO IN
10
13
12
DIGITAL
SECTION
A
POWER
SECTION
E
(Page 17)
(Page 14)
(Page 14)
(Page 19)
(Page 15)
STR-DG900
14
14
STR-DG900
4-2. BLOCK DIAGRAM — DIGITAL SECTION —
• Signal path
: TUNER (FM/AM)
: VIDEO (AUDIO)
: CD (ANALOG)
: CD (DIGITAL)
: VIDEO
• R-ch is omitted due to
same as L-ch.
same as L-ch.
1
+5V-2
A.5V
SDI1
SD01
DOUT
15
18
GP8
AUDIO 24
SYS CLK
16
XMCK
20
69
LRCKI1
15
BCKI1
17
KFSI0
CKOUT 13
22
BCKI2
BCK 14
29
LRCKI2
LRCK 15
28
SDI2
CS
WE
DATAO
LRCK 13
BCK 14
23
SD02 24
SD03 25
SD03 25
SD04 26
SCKOUT 14
LRCKO 19
BCKO
LRCKO
SCKOUT
BCKO
20
X1502
13.9MHz
X1301
12.288MHz
MCLK1 9
MCLK2 12
CSO 44
WEO 45
68
108,107,105 -102,99,
98,80 - 77,75 - 72
24 - 27,42 - 44,
1 - 5,18 - 21
29 - 32,35 - 38,
16-13,10 - 7
112,110,109,97 - 92,
85-82,66 - 64
6
17
2 113
36
35 33 34
32
74
71
37
72 73
76
104103102
78
EXLOCK
GP12
56
BST
ERROR
21
22
RST
6
84
67
85
61
38
37
36
35
33
17
INPUT
DATA
DEMODULATOR
Pa,Pb DETECTION
LOCK
DETECTION
MICROPROCESSOR
I/F
C bit DETECTION
34
59
16
30
DVD
IN
DIGITAL
(COAXIAL)
(COAXIAL)
ASSIGNABLE
(INPUT ONLY)
SELECTOR
IC1302
1
(OPTICAL)
OUT
IC1351
SA-CD/CD
IN
3
MD/TAPE
OUT
(OPTICAL)
DIN
IC1353
1
2
14
13
5
9 10
TV/SAT
IN
VIDEO 1
IN
(OPTICAL)
OUT
IC1352
IC1303
DIGITAL AUDIO
I/F RECEIVER
IC1301
J1301
-1
-2
2
3
WAVE
SHAPER
IC1304
J1301
2
3
WAVE
SHAPER
+2.6V
VDDI
+3.3V
VDDE
5
+3.3V
VDD
NC
L-IN
R-IN
R-CH
L IN
LPF
AUDIO
I/F
ADC
IC1401
DSP
IC1501
SDRAM
IC1502
SWITCH
IC1503
9718 GP9
DIR_DATAO
49
GP12
81
DIR_ERROR
9718 HACN1
9718 HCS1
9718 XRST1
9718 HDIN
9718 PM1
93
92
91
90
89
75
9718 BST1
121
BST_SEL
PCM1609 RST
PCM1609 ML
PCM1609 MDO
PCM1609 XM MDI
PCM1609 XM MC
69
ADCC_DET
ADCC_INT
ADCC_INT
9718 HDOUT
9718 HCLK
GP9
HACN
HCS
XRST
HDIN
PM
HDOUT
HCLK
6
DIR_CLK
DIR CE
47
48
35
HC151_A2
HC151_A1
HC151_A0
DIR_DIN
DIR_DO
DIR_XSTATE
CLK
CE
DI
DO
BPSYNC
82
86
48
DIR_XMODE
46
CKSEL0
83
DIR_CKSEL1
XMODE
XSTATE
5
4
3
XOUT
DIN1
8
SDIN
DIN2
2
DOUT
DIN0
XIN
A2 A1
D1301
D1503
D1502
D1504
D1501
D0-15
A0-15
D0-15
A0-15
SYSTEM
CONTROL
IC1101 (2/7)
TUNER/
AUDIO
SECTION
B
TUNER/
AUDIO
SECTION
A
SPDIF
HDMI
SECTION
G
OE
OEO 43
41
ADC
4
1
MD/TAPE
IN
(OPTICAL)
OUT
IC1354
3
1
DIGITAL
(OPT)
VIDEO 3 IN/
PORTABLE AV IN
OUT
IC4581
1
15
11
A0
DATA3
L OUT
C OUT
R-CH
VOUT5
VOUT6
47
3
10
1
5
9
7
AMP
IC1403
DATA1
SL OUT
R-CH
SW OUT
XM
SECTION
F
XM DAC MDI
XM DAC MC
VOUT1
VOUT2
45
5
14
7
3
13
1
AMP
IC1405
AMP
IC1404
DATA2
VOUT3
VOUT4
46
SCKI
38
BCK
40
LRCK
SCKOUT
BCKO
LRCKO
41
ML
36
RST
37
MDI
34
MDO
33
MC
35
LRCKO
3
12
1
5
11
7
DATA4
SBL OUT
VOUT7
VOUT8
31
5
16
7
R-CH
3
20
1
AMP
IC1406
8CH DAC
IC1452
DAC
DAC
DAC
DAC
1
2
(Page 13)
(Page 17)
(Page 13)
(Page 16)
STR-DG900
15
15
STR-DG900
4-3. BLOCK DIAGRAM — VIDEO SECTION —
• Signal path
: VIDEO
Y
P
B/
C
B/
B-Y
P
R/
C
R/
R-Y
Y
P
B/
C
B/
B-Y
P
R/
C
R/
R-Y
J3301 (1/2)
(ASSIGNABLE)
(ASSIGNABLE)
J3401 (2/3)
10
6
14
2
13
J3403 (1/2)
5
3
4
TV/SAT
IN
DVD
IN
VIDEO
IN
VIDEO
IN
COMPONENT
VIDEO
-1
-2
-3
-4
-5
-6
Y
P
R/
C
R/
R-Y
P
B/
C
B/
B-Y
J3301 (2/2)
MONITOR
OUT
COMPONENT
VIDEO
-7
15
75Ω
DRIVER
VIDEO
BUFFER
Q3601,3604
6dB AMP
1
3
1
75Ω
DRIVER
6dB AMP
-1
J3401 (1/3)
J3402 (1/2)
-8
-9
-2
VIDEO 1
J4591 (1/2)
VIDEO
-1
VIDEO 3 IN/
PORTABLE AV IN
DVD
VIDEO 2
TV/SAT
-2
VIDEO
IN
-1
VIDEO
OUT
VIDEO 1
2ND_RY
UPCON_DATA
UPCON_CLK
V_MUTE
UP_MUTE
OSD_DATA
OSD_CLK
OSD_LAT
V595_OE
OSD_ON/OFF
M_MUTE
-1
VIDEO
OUT
VIDEO 2
+7V
REG
IC3101
+VCC7V
3
1
+9V
REG
IC3102
+9V
SW1
SW2
COMP SW1
CONP_SEL2
V.SW1
V.SW2
V.SW3
V.SW3
V.SW4
COMP_SEL1
COMP_SEL1
COMP SW2
SW3
SW4
SYSTEM CONTROL
IC1101 (3/7)
MONITOR SELECT
IC3651
D3431,3432
OR
VEE
-5V-3
VCC
+5V-3
+VCC
+15V
V1.OUT
M.OUT
11
75Ω
DRIVER
6dB AMP
V2.OUT
V1 IN
LD
TV
V3
V2 IN
SW2
SW4
SW3
SW1
SW2
SW3
SW4
SW1
SW5
INPUT SELECT
IC3431
9
J3402 (2/2)
VIDEO
IN
-2
7
OR
MUTE1
MUTE2
MUTE2
MUTE1
3
1
+5V
REG
IC3103
+5V-3
3
2
-5V
REG
IC3104
-5V-3
+VCC
-VCC
J2106 (2/2)
J2105 (1/2)
J2105 (2/2)
S-VIDEO
IN
-2
VIDEO 1
S-VIDEO
IN
-1
DVD
S-VIDEO
IN
-2
TV/SAT
13
3
5
10
6
14
2
15
75Ω
DRIVER
6dB AMP
1
75Ω
DRIVER
6dB AMP
13
3
5
10
6
14
2
15
75Ω
DRIVER
6dB AMP
1
75Ω
DRIVER
6dB AMP
Y
C
G
G
J2106 (1/2)
-1
VIDEO 1
Y
C
G
G
Y
C
G
G
Y
C
G
G
VEE
-5V-3
VCC
+5V-3
VEE
-5V-3
VCC
+5V-3
V1.OUT
M.OUT
V1.OUT
M.OUT
V1 IN
TV
LD
LD
7
9
V3
V2 IN
V2 IN
V1 IN
TV
LD
LD
SW2
SW4
SW1
SW5
SW2
SW4
SW1
SW5
SW2
7
9
V3
V2 IN
V2 IN
SW2
SW4
SW1
SW5
SW4
4
4
SW3
SW3
SW3
SW3
SW1
SW5
Y SWITCH
IC2101
C SWITCH
IC2102
D2102,2103
12
2
3
A
B
C
CS MUTE
11 10 9
6
BUFFER
IC3141
36
40
37
38
38
39
66
66
65
IC3731
RY3304
RY3302
RY3301
COMP SW1
COMP SW2
RY3303
1
2
SYNC
SEPARATION
38
39
34
37
36
32
18
30
1
26
VIDEO PROCESS
IC3701
1
15
VIDEO AMP
IC3321
7
4
13
6
7
3
11
J4592
S-VIDEO
VIDEO 3 IN/
PORTABLE AV IN
Y
C
G
G
114
12
1
3
6
8
43
70
64
87
88
88
106
105
107
105
107
41
S-VIDEO
OUT
-3
J3401 (3/3)
VIDEO
OUT
MONITOR
MONITOR
15
1
2
SYNC
SEPARATION
IC3253
SWITCH
Q3252
RELAY
DRIVER
Q3302
RELAY
DRIVER
Q3301,3304
10
13
1
14
15
5
1O
5
37
9
7
VIDEO
BUFFER
Q3651-3653
2
SYNC
SEPARATION
Q3701
TUNER/
AUDIO
SECTION
C
Y AMP
Q3621
Y AMP
Q3673,3674
C AMP
Q3675,3676
Y/C SEPARATION
IC3601
VIDEO AMP
IC3671
Y/C SELECT
IC3751
Y AMP
Q3631
MUTE CONTROL
Q3677,3678
3
4
14
11 10 9 6
12
13
J2104
Y
C
G
A
B C
G
S-VIDEO
OUT
VIDEO AMP
Q3671,3672
SWITCH
Q3731
11
13
3
10
X3703
500kHz
X3701
3.5795MHz
VSYNC
HSYNC
YOUT
VOUT1
VOUT2
VOUT3
SECAM REF
U2OUT
V2OUT
CERA
XNTSC
F IN
AD IN
MONITOR V/IN
MONITOR Y/IN
MONITOR C/IN
CVBS/Y IN
C IN
SCL
SCL
SDA
4
1
4
7
VIN3
VIN2
VIN1
VOUT3
AYO
MOD1
MOD2
ACO
VOUT2
VOUT1
Y PROCESS
Q3622,3623,3647
C PROCESS
Q3624,3632,3633
25
27
26
11
10
10
21
TP3501
NTSC/
PAL
SIGNAL
GEN
4FSC
OSC
SERIAL
INPUT
CONTROL
VIDEO
SIGNAL
GEN
OUTPUT
CONTROL
DISPLAY
MEMORY
CONTROL
CG ROM
CHARACTER
OSD VIDEO
SWITCH
Q3522
OSD Y
SWITCH
Q3523
OSD CHROMA
SWITCH
Q3521
VRAM
ANALOG
SW
1
2
4
V SYNC
2ND ROOM
H SYNC
TEST
TEST
(TEST)
SIN
SCLK
CS
SCLK
CS
DATA
XS
EXS
V OUT
Y OUT
C OUT
5V-3
ON SCREEN DISPLAY CONTROL
IC3501
4
7
CT3502
X3501
14.31818MHz
COLOR
BURST
BURST
9
8
Q3532
OSD ON/OFF
AVCC
VCC
B+ SW
Q3531
23
22
24
22
24
19 17
PNR
NTPL1
26
23
DATA
CLK
LATCH
CLK
LATCH
13
1
10
11
3
8
8
IC1141
BUFFER
(Page 13)
STR-DG900
16
16
STR-DG900
4-4. BLOCK DIAGRAM — HDMI SECTION —
52
51
48
47
44
44
43
40
49
31
32
96
97
DATA2+
1
DATA2–
3
DATA1+
4
DATA1–
6
DATA0+
7
DATA0–
9
CLOCK+
10
CLOCK–
ROX2+
HDMI RX CONTROL,+3.3V/+1.8V REG
IC5004
HDMI SYSTEM CONTROL
IC5006
HDMI TX CONTROL,+3.3V/+1.8V REG
IC5005
1
DE
D23
l
D0
D23
l
D0
SD3
l
SD0
SD3
l
SD0
ROX2–
ROX1+
19
20
RX_RST
RX_INT
21 RX_HPG_DTCT01
RX_HOG_DTCT00
22
27 UC3V_SCL
28 UC3V_SDA
28 UC3V_SDA
35 EN1_HDMI1 EEPROM SEL1
EN1_HDMI2 EEPROM SEL0
36
ROX1–
ROX0+
ROX0+
DSCL0
DSDA0
XTALOUT
XTALIN
ROX0–
ROXC+
ROXC–
ROXC–
CEC
+5V1
SCL(5V)
SDA(5V)
+5V POWER
HOT PLUG DET
12
13
15
X5001
28.322MHz
16
18
19
CN5002
DATA2+
1
DATA2–
3
DATA1+
4
DATA1–
6
DATA0+
7
DATA0–
9
CLOCK+
10
CLOCK–
CEC
SCL(5V)
SDA(5V)
+5V POWER
HOT PLUG DET
12
13
15
16
18
19
CN5004
CNVSS
RESET
232C_OUT
232C_IN
1
2
3
5
7
7
CN5003
X5002
5MHz
+3V/+5V
SELECT
Q5006
+3V/+5V
SELECT
Q5009
BUFFER
IC5001
71
70
67
66
63
63
62
59
58
29
30
DATA2+
1
DATA2–
3
DATA1+
4
DATA1–
6
DATA0+
7
DATA0–
9
CLOCK+
10
CLOCK–
R1X2+
R1X2–
R1X1+
R1X1–
R1X0+
R1X0+
DSCL1
DSDA1
+HDMI5V
3
2
6
7
+3V/+5V
SELECT
IC5014
3
2
6
7
+3V/+5V
SELECT
IC5013
R1X0–
R1XC+
R1XC–
R1XC–
CEC
+5V2
SCL(5V)
SDA(5V)
+5V POWER
HOT PLUG DET
12
13
15
16
18
19
CN5001
HDMI IN1
HOT PLUG
DETECT
Q5002,5004
HDMI IN2
HOT PLUG
DETECT
Q5001,5003
+3V/+5V
SELECT
Q5008
+3V/+5V
SELECT
Q5010
SWITCH
Q5005
2
HSYNC
3
VSYNC
121
81
l
84
7
l
10
ODCK
85
WS
86
SCK
42
TX_RST
43
42
17
TX_INT
11
XOUT
13
XIN
RESET
44 CSDA
43 CSCL
5 SPDIF
6 MCLK
12 SCK
11 WS
66 IDCK
2 VSYNC
1 HSYNC
80 DE
36
TX2+
35
TX2–
33
TX1+
32
TX1–
30
TX0+
29
TX0–
27
TXC+
26
TXC–
20
DSCL
19
18
13
11
+5V REG
IC5009
4
5
1
DSDA
+HDMI5.8V
HPD
2
4
1
+HDMI1.8V
INT
SPDIF
HUART_TX
HUART_RX
108
115
HDMI_RST
HDMI_MUTE
+VCC7V
+HDMI3.3V
+HDMI5.8V
118 HDMI_CTL
TH_HPG
CNVSS
RESET
232COUT
232CIN
MAIN CPU_RX
MAIN CPU_TX
3.3V
+HDMI3.3V
34
33
65
MUTE
41
7
10
29
30
88
MCKOUT
78
SPDIF
77
MUTEOUT
28
CSCL
27
CSDA
102
RESET
104
INT
110-113
116-119
123-126
129-133
136,137
140-144
116-119
123-126
129-133
136,137
140-144
49-58
61-65
67-70
75-79
61-65
67-70
75-79
+1.8V REG
IC5007
1
3
1
3
LOW SATURATION
WITH ON/OFF
SWITCH
IC5008
6
4
1
+HDMI5V
+HDMI5.8V
+HDMI3.3V
5
EEPROM
IC5002
HDMI IN2
EEPROM
INFORMATION SELECT
IC5003
6
3
13
5
6
7
4
1
14 11
15
9
10
2
12
INH
A
SDA
SCL
WP
B
+3.3V REG
IC5010
+5.8V REG
IC5012
MONITOR
OUT
HDMI
IN1
IN2
(ASSIGNABLE)
(ASSIGNABLE)
HDMI
+3V/+5V
SELECT
Q5007
DIGITAL
SECTION
G
KEY/DISPLAY
SECTION
H
SYSTEM CONTROL
IC1101
(4/7)
(Page 14)
(Page 18)
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