Sony STR-DB798 Service Manual ▷ View online
STR-DB798
13
13
STR-DB798
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – TUNER/VIDEO Section –
• SIGNAL PATH
: TUNER
A
DATA,
CLK
CLK
FM
AM
8
L CH
10
R CH
13
FM SIG OUT
14
RDS-INT
15
RDS-DATA
116
VIDEO_SW3
117
VIDEO_SW4
115
VIDEO_SW2
114
VIDEO_SW1
100
UP CON SCL
99
UP CON SDA
2
ST-DO
4
CE
3 ST-DI
1 CLK
7
STEREO
11
MUTE
6
TUNED
(AEP, UK)
TUNER
47 RDS.DATA
RDS_SIGNAL
RDS_CLK
66 TUNER LATCH
49 TUNER TUNED
48 TUNER ST
50 TUNER MUTE
135
65 TUNER DO
61
SYSTEM CONTROLLER
IC1703 (1/6)
B
TUNER-L
COAXIAL
FM 75
AM
R-CH
: VIDEO
ANTENNA
SW4
SW3
SW2
39
CSW1
34
CSW2
40
C.PSAVE
CSW1
CSW2
C.PSAVE
SW1
SCL
SDA
7
9
3
5
13
V3
V2. IN
TV
LD
V1. IN
10
4
14
6
2
15
1
SW2
SW3
SW1
SW4
SW5
V1.OUT
M.OUT
7
9
3
5
13
V3
V2. IN
TV
LD
V1. IN
10
4
14
6
2
15
1
SW2
SW3
SW1
SW4
SW5
V1.OUT
M.OUT
15
13
9
11
3
5
7
1
2
14
10
4
6
D302
D301
D851
D850
J1091 (1/2)
VIDEO 3
INPUT
VIDEO
VIDEO
TV/SAT VIDEO IN
DVD VIDEO IN
VIDEO 2 VIDEO IN
VIDEO VIDEO 2 OUT
J305
J304
VIDEO
VIDEO
VIDEO
VIDEO 1 VIDEO IN
VIDEO 1 VIDEO OUT
J1092
J852 (2/2)
J850 (2/2)
J850 (1/2)
J852 (1/2)
C
Y
C
Y
C
Y
C
Y
C
Y
J302
VIDEO SELECTOR
IC301
C SWITCH
IC850
Y SWITCH
IC851
VIDEO 3
INPUT
S-VIDEO
TV/SAT
S-VIDEO IN
DVD
S-VIDEO IN
VIDEO 1
S-VIDEO IN
J853 (1/2)
C
Y
VIDEO 2
S-VIDEO IN
VIDEO
MONITOR
VIDEO OUT
V1. OUT
V1. IN
V2. IN
V2. OUT
TV
LD
V3
M. OUT
SW5
SW1
SW2
SW3
SW4
VIDEO 1
S-VIDEO OUT
J853 (2/2)
C
Y
VIDEO 2
S-VIDEO OUT
SW4
SW1
SW2
SW3
C
Y
J851
MONITOR
S-VIDEO OUT
RY850
-1
-2
VIDEO
BUFFER
Q372
19
27
7
15 16
25
VIDEO SYNC
SEPARATOR
SEPARATOR
IC370
4
1
7
16
CLOCK
GENERATOR
IC371
X371
3.5795MHz (Taiwan)
4.43MHz (AEP, UK)
C SYNC BUFFER
Q373
RELAY
DRIVE
Q850, 851
SYNC SEPARATOR
IC852
Y SYNC BUFFER
Q371
VIDEO
AMP
IC372
DATA
CLK
CLK
SCL
SDA
11
V2.OUT
11
V2.OUT
• R-CH is omitted due to same as L-CH.
J301 (1/2)
TV/SAT
IN
P
B
/C
B
/B-Y
P
R
/C
R
/R-Y
Y
COMPONENT
VIDEO
ASSIGNABLE
P
B
/C
B
/B-Y
P
R
/C
R
/R-Y
Y
COMPONENT
VIDEO
ASSIGNABLE
DVD IN
P
B
/C
B
/B-Y
P
R
/C
R
/R-Y
Y
CSW1
MONITOR
OUT
J301 (2/2)
24
CH1OUT
CH1IN3
CH1IN2
3
INPUT SELECT
IC1304
5
22
CH2OUT
20
CH3OUT
CH2IN3
CH2IN2
10
12
CH3IN3
CH3IN2
15
13
2
SW1
CSW2
4
SW2
C.PSAVE
23
PS
CHROMA IN
COMPOSITE IN
X' TAL
FSC
OUT
(Page 17)
(Page 15)
STR-DB798
14
14
STR-DB798
: AUDIO (ANALOG)
: AUDIO (DIGITAL)
VIDEO
G
S MUTE
H
SCLKO
4
DIGITAL
CONTROL
DATA
DEMODULATOR
LOCK
DETECT
TIMING
MICON INTERFACE
CLOCK
INPUT
CIRCUIT
IC1102
IC1151
J1101
J202
VIDEO 2 AUDIO OUT
DVD AUDIO IN
TV/SAT AUDIO IN
L
L
L
VIDEO 2 AUDIO IN
J1091 (2/2)
L
J201
L
L
L
DIGITAL AUDIO INTERFACE RECEIVER
IC1101
CLK
LAT
DATA
AUDIO SELECTOR
IC201
4
5
7
8
3
2
10
12
14
15
16
6
5
14
2
3
7
36 38 37
35
47
CKSEK1
DI
CE
CLK
DO
48
CKSEL1
B
A
DI
CLK
CE
DO
XMODE
XMODE
3
DIN0
16
DATAO
34
ERROR
14
BCK
15
LRCK
17
XSTATE
21
XOUT
22
XIN
24
AUDIO
X1101
12.288MHz
D1601
HDIN
HCLK
67
DIR ERROR
ANALOG_DIGITAL
121
104
103
69 OPT SEL2
91 ADC:RST
70 OPT SEL1
74 CKSEL1
79 DI
75 CLK
76 CE
80 DO
73 XMODE
90
DSP_HACN
87
PM1
89
DSP_HCS
102
HDOUT
88
DSP GP9
84
GP12
72
DATA0
71
XSTATE
A
B
CKSEL1
DI
CLK
CE
DO
XMODE
SYSTEM CONTROLLER
IC1703 (2/6)
18 SDI1
30 SDI2
SDCLK
69
GP8
68
GP9
36
HCS
34
HCLK
33
HDIN
35
HDOUT
32
HACN
113
PM
86
XRST
2
XRST
22
KFSIO
37
AUDIO DIGITAL
SIGNAL PROCESSOR
IC1201
23
SDO1
24
SDO2
25
SDO3
19
LRCKO
20
BCKO
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
A
B
VIDEO 1 AUDIO IN
VIDEO 1 AUDIO OUT
VIDEO 3
INPUT
AUDIO
DIGITAL OPTICAL
RECEIVER
IC1104
DIGITAL OPTICAL
RECEIVER
IC1105
DIGITAL OPTICAL
RECEIVER
IC1106
OPTICAL
DVD IN
COAXIAL IN
DVD
COAXIAL IN
SA-CD/CD
DIGITAL OPTICAL
RECEIVER
IC1081
VIDEO 3
INPUT
DIGITAL
OPTICAL
OPTICAL
TV/SAT IN
OPTICAL
MD IN
OPTICAL
MD OUT
DIGITAL OPTICAL
TRANSCEIVER
IC1107
DIGITAL SELECTOR
IC1103
28 LRCKI2
15 LRCKI1
29 BCKI2
17 BCKI1
59 EXLOCK
MUTING
SWITCH
SWITCH
Q1602
MUTING
SWITCH
SWITCH
Q1601, 1603
4
DIN1
5
DIN2
2
DOUT
9
MCLK1
12
MCLK2
X1201
13.9MHz
EEPROM
IC1604
CLOCK
BUFFER
IC1950
5
112
6
111
SDA
SCL
EEPROM SDA
EEPROM SCL
58
X0
57
X1
X1601
16.5MHz
25
FUNC_MUTE
108, 107, 105 – 102,
99, 98, 80 – 77,
75 – 72
112, 110, 109,
97 – 92, 82 – 85,
66 – 64
7 – 10, 13 – 16,
29 – 32, 35 – 38
5 – 1, 44 – 42,
27 – 24, 21 – 18
S-RAM
IC1202
IC1202
6
17
CS
WE
44
45
CSO
WEO
D0 – D15
A0 – A15
D0 – D15
A0 – A15
67
GP10
SIGNAL-END
DEFERENTIAL
CONVERTER
DIGITAL
MODULATOR
SERIAL I/O
INTERFACE
CLOCK/
TIMING CONTROL RESET
/POWER CONTROL
A/D CONVERTER
IC1401
15
14
BCK
16
SYSCLK
1
DOUT
LIN
6
RSTB
13
LRCK
BUFFER
IC1402
20
XMCK
C
DATA, CLK, LAT
82
LRCK SW
85
DSP_BST
56
BST
6
2
5
1
SIGNAL
SELECTOR
IC1204
D1101
D
SOURCE-L
26
SDO4
F
BCKO,
LRCKO
SDO3
E
SDO1, SDO2,
SDO3, SDO4
SDO2
SDO4
SDO1
SWITCHING
IC1503
13
CKOUT
BCKO
BCKO
66 FLFRI
65 SLSRI
64 CSWI
63 DLDRI
60 BCKI
59 LRCKI
47
FLFRO
46
SLSRO
45
CSWO
44
DLDRO
100 1 – 5 7 8
90 – 95 97 98
17 – 22
24 – 29
2 3 5 6 8 9 11 12 39
40 42 43 45 46 48 49
19 – 24
27 – 32
15 WE
16 CAS
17 RAS
10
WE
11
CAS
12
RAS
18 CS
35 CLK
34 CKE
13
CS
14
CLK
15
CKE
LIP SYNC ADJUST
IC2010
DQ0 – 15
A0 – 11
D0 – D15
A0 – 11
SD-RAM
IC2050
81
AUDY_CLK
28
AUDY_DATA_IN
29
AUDY_LATCH
30
AUDY_RESET
78
AUDY_DATA
72 SCLK
75 SO
73 XCS
70 XRST
74 SI
68 CLK512
6-2. BLOCK DIAGRAM – AUDIO DSP Section –
(Page 17)
(Page 15)
(Page 15)
(Page 15)
(Page 15)
(Page 15)
STR-DB798
15
15
STR-DB798
BUFFER
IC602 (2/2)
+
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
Q751
MUTING
Q601
MUTING
Q501
MUTING
Q401
MUTING
Q701
E
SDO1,
SDO2,
SDO3,
SDO4
SDO2,
SDO3,
SDO4
F
BCKO,
LRCKO
LRCKO
G
S MUTE
TRIM
LEVEL SHIFT
CIRCUIT
CENTER
SUB WOOFER
P
DATA, CLK, LAT
DATA, CLK, LAT
J
FL
LEVEL SHIFT
CIRCUIT
L
SL
M
SBL
R
SW
LEVEL SHIFT
CIRCUIT
K
C
J101
45
46
47
40
41
DATA1
DATA2
DATA3
DATA4
DATA4
BCK
LRCK
BCKO
LRCKO
SCKI
SDO1
SDO3
SDO2
31
SDO4
34
MDI
35
MC
36
ML
37
RST
33
MDO
14
10
12
11
VOUT1
VOUT5
VOUT3
VOUT4
AUDIO SELECTOR
IC101
9
5.1FL
12 5.1SL
28 5.1 C
15 5.1SW
2
PHONO
3
MD IN
4
MD OUT
5
CD
24
COUT
11
FLOUT
19
SWOUT
10
13 D/ASL
14
SLOUT
22
DATA
21
CLK
23
LAT
26 D/A C
17 D/ASW
20
VRIN
23
OUT
25
24
TRIM
13
CLK
17
LAT
16
DATA
CLK
LAT
DATA
CLK
LAT
DATA
20
VRIN
23
OUT
25
TRIM
24
TRIM
13
CLK
17
LAT
16
DATA
9
VRIN
6
OUT
4
TRIM
5
TRIM
CLK
LAT
DATA
13
CLK
17
LAT
16
DATA
CLK
LAT
DATA
20
VRIN
23
25
24
OUT
TRIM
TRIM
108 DA1DO
93 DA1LAT
92 DAC_RST
95 DAC_MDI
94 DACCLK
6
CTR/SW RY
SYSTEM CONTROLLER
IC1703 (3/6)
DATA
CLK
LAT
FRONT
L
SURR
L
B
TUNER-L
H
SCLKO
6
TUNER
D
SOURCE-L
7
A/D, V
8
2CH
BUFFER
IC1521
BUFFER
IC1561
BUFFER
IC1541 (1/2)
BUFFER
IC1541 (2/2)
9
VOUT6
13
VOUT2
R-CH
R-CH
LPF
AMP
16
VOUT7
20
VOUT8
R-CH
D/AFL
BUFFER
IC1581
BUFFER
IC602 (1/2)
BUFFER
IC502
ELECTRICAL
VOLUME
IC401
AUDIO SELECTOR
IC173
ELECTRICAL
VOLUME
IC601
BUFFER
IC652
LEVEL SHIFT
CIRCUIT
20
VRIN
23
OUT
25
TRIM
24
TRIM
13
CLK
17
LAT
16
DATA
CLK
LAT
DATA
ELECTRICAL
VOLUME
IC651
ELECTRICAL
VOLUME
IC501
D/A CONVERTER
IC1501
LINE AMP
IC112
LINE AMP
IC111 (1/2)
LINE AMP
IC111 (2/2)
22
27
26
25
19
21
17
23
BUFFER
IC171
LINE AMP
IC110
CONTROL
14
15
16
38
J151
PHONO IN
L
L
SA-CD/CD IN
J131
MD/TAPE IN
L
L
MD/TAPE OUT
PHONO
EQ AMP
IC131
BUFFER
IC402
J803
SUB WOOFER
AUDIO OUT
RY807
Q
RELAY
DRIVE
Q826
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
: TUNER
: AUDIO (ANALOG)
: AUDIO (DIGITAL)
MUTING
CONTROL
Q813
AUDIO
MULTI CH IN
AUDIO
6-3. BLOCK DIAGRAM – AUDIO CONTROL Section –
(Page 13)
(Page 14)
(Page 14)
(Page 14)
(Page 14)
(Page 14)
(Page 16)
(Page 16)
(Page 16)
(Page 17)
(Page 17)
(Page 16)
(Page 16)
STR-DB798
16
16
STR-DB798
: AUDIO (ANALOG)
TM449 (2/2)
+
+
–
–
TM444
BIAS
Q631, 634
BOOSTER
Q602
BOOSTER
Q603
J
FL
SYSTEM CONTROLLER
IC1703(4/6)
CURRENT
DETECT
Q632, 633
CURRENT
DETECT
Q432, 433
CURRENT
DETECT
Q732, 733
5
41
134
3
2
7
118
SURR.RY
HP DETECT
LIMITER.IN
SP.A.RY
4
SP B RY
H/P RY
SB.RY
PROTECTOR
RELAY
DRIVE
Q823
RY806
R-CH
RELAY
DRIVE
Q809
RY449
RELAY
DRIVE
Q811
RY699
RELAY
DRIVE
Q807
RY549
D820
D818
PHONES
CENTER
L
R
J1086
+
+
–
–
TM699
–
–
+
+
R-CH
R-CH
SURR
L
R
SURR
BACK
L
R
RY649
D812
D819
D816
AF POWER
PROTECTOR
Q802, 803,
Q805
RELAY
DRIVE
Q808
RY444
L
R
+
+
–
–
TM449 (1/2)
R-CH
R-CH
FRONT A
FRONT B
RV631
BIAS
PRE DRIVE
Q2201, 2203
BIAS
Q2204, 2205
BIAS
Q2206
BIAS
Q531, 534
BOOSTER
Q502
BOOSTER
Q503
L
SL
RV531
BIAS
PRE DRIVE
Q2401, 2403
BIAS
Q2404, 2405
BIAS
Q2406
BIAS
Q431, 434
BOOSTER
Q402
BOOSTER
Q403
K
C
RV431
BIAS
PRE DRIVE
Q2001, 2003
BIAS
Q2004, 2005
BIAS
Q2006
BIAS
Q731, 734
BOOSTER
Q702
BOOSTER
Q703
M
SBL
RV731
BIAS
PRE DRIVE
Q2701, 2703
BIAS
Q2704, 2705
BIAS
Q2706
+
–
D411
D611
D711
D511
R
SW
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
CURRENT
DETECT
Q532, 533
SPEAKERS
+
OVER VOLTAGE
DETECT
Q822
B+
6-4. BLOCK DIAGRAM – AUDIO AMP Section –
(Page 15)
(Page 15)
(Page 15)
(Page 15)
(Page 15)
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