Sony STR-DB795 Service Manual ▷ View online
STR-DB795
54
54
STR-DB795
•
Waveforms
1
IC1101
qd
(CKOUT)
1 V/DIV, 50 ns/DIV
2
IC1101
qf
(BCK)
1 V/DIV, 100 ns/DIV
3
IC1101
qg
(LRCK)
1 V/DIV, 10
µ
s/DIV
4
IC1101
w;
(XMCK)
1 V/DIV, 20 ns/DIV
7
IC1201
qg
(LRCKI1),
wk
(LRCKI2)
1 V/DIV, 10
µ
s/DIV
8
IC1201
qj
(BCKI1),
wl
(BCKI2)
1 V/DIV, 100 ns/DIV
9
IC1201
ql
(LRCKO)
1 V/DIV, 10
µ
s/DIV
q;
IC1201
w;
(BCKO)
1 V/DIV, 100 ns/DIV
qa
IC1201
ws
(KFSIO)
1 V/DIV, 20 ns/DIV
5
IC1101
wa
(XOUT)
1 V/DIV, 20 ns/DIV
qs
IC1401
qd
(LRCK)
1 V/DIV, 10
µ
s/DIV
qd
IC1401
qf
(BCK)
1 V/DIV, 100 ns/DIV
qf
IC1401
qh
(SYSCLK)
1 V/DIV, 20 ns/DIV
qg
IC1501
ek
(SCKI)
1 V/DIV, 20 ns/DIV
qh
IC1501
r;
(BCK)
2 V/DIV, 100 ns/DIV
wa
IC1703
tj
(X1)
1 V/DIV, 20 ns/DIV
6
IC1201
qs
(MCLK2)
1 V/DIV, 20 ns/DIV
qj
IC1501
ra
(LRCK)
1 V/DIV, 10
µ
s/DIV
qk
IC1502
1
(BCK)
2 V/DIV, 100 ns/DIV
ql
IC1502
3
(LRCK)
1 V/DIV, 10
µ
s/DIV
w;
IC1502
qh
(SCK)
1 V/DIV, 20 ns/DIV
ea
IC371
4
(XTAL) (VIDEO 1
mode) (EXCEPT TW, KR)
50 mV/DIV, 100 ns/DIV
ea
IC371
4
(XTAL)
(VIDEO 1 mode) (TW, KR)
50 mV/DIV, 100 ns/DIV
81 ns
4.2 Vp-p
81 ns
4.4 Vp-p
326 ns
4.0 Vp-p
326 ns
5.5 Vp-p
326 ns
5.4 Vp-p
326 ns
6.5 Vp-p
326 ns
6.5 Vp-p
326 ns
4.6 Vp-p
20.8
µ
s
3.4 Vp-p
20.8
µ
s
3.6 Vp-p
20.8
µ
s
3.6 Vp-p
20.8
µ
s
3.6 Vp-p
20.8
µ
s
3.6 Vp-p
20.8
µ
s
3.6 Vp-p
81 ns
4.6 Vp-p
72 ns
4.0 Vp-p
60.5 ns
3.8 Vp-p
81 ns
5.1 Vp-p
81 ns
4.9 Vp-p
5.3 Vp-p
81 ns
5.3 Vp-p
81 ns
226 ns
120 mVp-p
279 ns
120 mVp-p
– DIGITAL Board –
– COMP-V Board –
55
STR-DB795
IC1103
SN74HC153ANS
38
37
36
23
24
1
2 3
4
5
44
8 9 10
46
17
22
21
20
30
35
25
26
27
28
29
32
33
34
16
45
13
14
15
47
40
41
48
CL
39
XSEL
CE
DI
EMPHA
AUDIO
DISEL
DOUT
DINO
DINI
DIN2
6
DGND
7
DVDD
11
AVDD
12
AGND
DOSEL0
R
VIN
LPF
CKSEL0
XSTATE
18 DGND
19 DVDD
XIN
XOUT
XMCK
XSEL
31
DGND
DO
CSFLAG
F0
F1
F2
VF
ERR9P
BPSYNC
ERROR
DATAO
DOSEL1
CKOUT
BCK
LRCK
CKSEL1
MODE0
MODE1
42
DGND
43
DVDD
XMODE
TIMING
MICROCOMPUTER
INTERFACE
SAMPLING
FREQUENCY
C BIT
DETECT
PA/PB
DETECT
LOCK
DETECT
INPUT
CIRCUIT
DATA
DEMODULATOR
PLL
X’ TAL
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
2G
2C3
2C2 2C1 2C0
2Y
VCC
2C3
2C2 2C1 2C0
STROBE
2G
OUTPUT
2Y
A
SELECT
DATA INPUTS
B
B
A
A
B
B
A
A
1G
1C3 1C2
1C1 1C0
1Y
STROBE
1G
B
SELECT
1C3 1C2
1C1
1C0
OUTPUT
1Y
GND
DATA INPUTS
IC1204, 1504
TC7WH157FU (TE12R)
SELECT
11
6
ST
11
7
A
1
2
3
A
B
Y
5
Y
B
GND 4
VCC
8
Y
EN G
Y
IC1101
LC89056W-E
•
IC Block Diagrams
– DIGITAL Board –
56
STR-DB795
IC1401
PCM1800E/2K
IC1501
PCM1604Y-2/2K
SINGLE-END
DEFERENTIAL
CONVERTER
REFERENCE
SINGLE-END
DEFERENTIAL
CONVERTER
DIGITAL
∑
MODULATOR
DIGITAL
∑
MODULATOR
1/64
DECIMATION
FILTER
&
LOW-CUT
FILTER
CLOCK/
TIMING CONTROL RESET/
POWER CONTROL
SERIAL I/O
INTERFACE
&
MODE/FORMAT
CONTROL
LIN
V REF 1
REFCOM
V REF 2
RIN
RSTB
FMT0
BYPASS
FMT1
MODE1
MODE0
FSYNC
1
2
3
4
5
6
8
7
9
11
10
12
AGND
VCC
C PR
C NR
C PR
C NR
DGND
SYSCLK
DOUT
BCK
LRCK
VDD
24
23
22
21
20
19
17
16
15 14 13
18
CLOCK
MANAGER
MODE CONTROL
INTERFACE
SERIAL
INPUT
INTERFACE
MULTI-FUNCTION
X8
OVER SAMPLING
DIGITAL
FILTER
MULTI-
LEVEL
DIGITAL
∑
MODULE
BPZ CONTROL
ZERO DETECT
D/A
CONVERTER
D/A
CONVERTER
D/A
CONVERTER
2CH LPF
&
OUTPUT AMP
2CH LPF
&
OUTPUT AMP
2CH LPF
&
OUTPUT AMP
RST
SCKI
SCKO
BCK
TEST
VDD
DGND
DATA1
DATA2
DATA3
ZEROA
LRCK
37
38
39
40
42
43
44
45
46
47
48
41
ZERO1
ZERO2
ZERO3
ZERO4
ZERO5
ZERO6
AGND
VCC
VOUT6
VOUT5
VOUT4
VOUT3
1
2
3
4
5
6
7
8
9
10
11
12
VOUT2
VOUT1
VCOM2
VCOM1
AGND6
VCC6
AGND5
VCC5
AGND4
VCC4
AGND3
VCC3
13
14
15
16
17
18
19
20
21
22
23
24
ML
MC
MDI
MDO
NC
NC
VCC0
AGND0
VCC1
AGND1
VCC2
AGND2
36 35 34 33
32
31
30
29
28
27
26
25
57
STR-DB795
IC1502
PCM1748E/2K
– VIDEO Board –
IC301
NJM2590D
SCK
1 2 3
7 8
4
5
6
SERIAL
INPUT
INTERFACE
10
9
BCK
DATA
LRCK
VOUTL
VOUTR
DGND
VDD
VCC
VCOM
AGND
FUNCTION
CONTROL
INTERFACE
SYSTEM
CLOCK
MANAGER
8 TIME OVER
SAMPLING
DIGITAL FILTER
WITH
FUNCTION
CONTROLLER
ENHANCED
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
D/A
CONVERTER
D/A
CONVERTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
ZERO DETECT
POWER SUPPLY
12
11
ZEROL
ZEROR
15
14
ML
MC
16
13
MD
SYSTEM
CLOCK
15 VOUT2
16 V+
14 SW1
75
Ω
DRIVER
6dB
AMP
75
Ω
DRIVER
6dB
AMP
11 VOUT3
75
Ω
DRIVER
6dB
AMP
13 VIN1
12 GND
10 SW2
9 VIN2
3
VIN5
4
SW3
5
VIN4
6
SW4
7
VIN3
2
SW5
1
VOUT1
8
V–
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