Sony STR-DB1070 / STR-DB870 Service Manual ▷ View online
STR-DB870/DB1070
46
46
• Waveforms
– DIGITAL Board –
– DIGITAL Board –
1
IC1303
qf
(XO)
2
IC1410
1
3
IC1601
<zc.>
(MCLK2)
4
IC1703
tj
(X1)
5
IC1501
qd
(MCLK2)
qs
IC304
qd
– VIDEO Board –
qa
IC304
qa
1.3 Vp-p
231 ns
4 Vp-p
71 ns
3.9 Vp-p
40.4 ns
4 Vp-p
57.7 ns
3.7 Vp-p
74 ns
3.8 Vp-p
60 ns
3.8 Vp-p
74 ns
• IC Block Diagrams
IC101
TC9274N-016 (MAIN board)
1
2
3
4
5
6
7
8
9
10
11
12
20
21
42
40
40
39
38
37
36
35
34
33
32
31
23
22
VSS
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
GND
CK
VDD
STB
DATA
18BIT
LATCH
CIRCUIT
(R-CH)
18BIT
LATCH
CIRCUIT
(L-CH)
LEVEL SHIFT & SHIFT REGISTER
13
S12
30 S12
14
S13
29 S13
15
S14
28 S14
16
S15
27 S15
17
S16
26 S16
19
S18
24 S18
18
S17
25 S17
IC102
TC9273N-004 (MAIN Board)
IC105
TC9273N-013 (MAIN Board (STR-DB1070))
IC201
TC9273N-014 (VIDEO AU Board)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VSS
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
GND
CK
VDD
STB
DATA
10BIT
LATCH
CIRCUIT
(R-CH)
10BIT
LATCH
CIRCUIT
(L-CH)
LEVEL SHIFT & SHIFT REGISTER
IC303
TC74HC4053AP (VIDEO Board (US and Canadian models))
16
15 14
13
12
11
10
9
1
2
3
4
5
6
7
8
C
B
A
OX
IX
X-COM
Y-COM
VCC
GND
VEE
INH
OZ
Z-COM
IZ
OY
IY
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
LOGIC LEVEL CONVERTOR
IC305
BA7622 (VIDEO Board (STR-BD1070))
1
2
3
4
8
7
6
5
GND
IN1
IN2
IN3
OUT1
OUT2
OUT3
VCC
75OHM
DRIVER
75OHM
DRIVER
75OHM
DRIVER
47
STR-DB870/DB1070
IC307
MB90089F-G-238-BND (VIDEO Board (STR-DB1070))
IC308
NJM2296D (VIDEO Board)
IC750, 752
NJM2296D (S-VDIEO Board)
IC309, 311
LA7213 (VIDEO Board
(STR-DB1070: AEP, UK, E and Chinese models))
ANALOG
SWITCH
SERIAL
INPUT
CONTROL
VIDEO
SIGNAL
GENERATOR
CIRCUIT
4 FSC
CLOCK
OSCILLATOR
CIRCUIT
FOR
COLOR
BURST
BURST
DATA
OUTPUT
CONTROL
NTSC/PAL
SIGNAL GENERATOR
CIRCUIT
H/V
SEPARATE
CIRCUIT
DISPLAY
MEMORY
CONTROL
CGROM
CHARACTER
VRAM
VIDEO PHASE SYNC
YIN
CIN
VIN
HSYNC
VSYNC
EXS
VBLK
FSCO
AVCC
XS
EXHSYN
EXVSYN
VSS
1
2
3
10
11
8
6
5
4
9
12
13
14
YOUT
AVSS
COUT
VOUT
CS
SIN
SCLK
VOC0
VOC1
VOC2
VOB
XD
EXD
27
26
25
28
24
23
22
20
19
18
17
16
15
VCC
7
TEST
21
DOT-CLOCK
GENERATOR
CIRCUIT
9
S5
S6
S7
S4
S1
S2
S3
Vout1
Vout2
Vout3
V-
GND
SW3
SW2
SW1
SW5
SW4
Vin1
Vin2
Vin3
Vin4
Vin5
V+
10
11
12
13
14
15
16
1
5
2
3
4
6
7
8
1
SYNC
SEP
V-SYNC
SEP
2
3
4
5
V IN
HD
VSS
VD
VDD
IC403, 503, 603
µPC2581V (MAIN Board (IC603: STR-DB1070))
2
3
5
4
6
7
9
8
1
MUTE
+ VOUT1
– VOUT1
COMP1
MF1
IN1
GND
IN2
NF2
COMP2
– VOUT2
+ VOUT2
VCC1
VCC2
VEE
PROTECTOR
BIAS CIRCUIT
REG
DRIVE
PRE
DRIVE
11
10
12
13
15
14
DRIVE
PRE
DRIVE
48
STR-DB870/DB1070
IC401, 501, 601, 701
TC94A07P (MAIN Board)
TRIM VOLUME
0-+24dB/
1dB STEP
TRIM VOLUME
0-+24dB/
1dB STEP
DECODER
&
LATCH CIRCUIT
DECODER
&
LATCH CIRCUIT
DECODER
&
LATCH CIRCUIT
24 BIT
SHIFT REGISTER
CIRCUIT
LEVEL SHIFT
CIRCUIT
DECODER
&
LATCH CIRCUIT
DECODER
&
LATCH CIRCUIT
DECODER
&
LATCH CIRCUIT
1
VSS
2
TRIM
3
TRIM
4
TRIM
5
OUT
6
VRGND
7
IN
8
CS1
9
GND
10
CLK
19 TRIM
18 TRIM
17 TRIM
16 OUT
15 RGND
14 IN
13 CS2
12 LAT
11 DATA
20 VDD
MAIN
VOLUME
0- –85dB/
1dB STEP
1dB STEP
MAIN
VOLUME
0- –85dB/
1dB STEP
1dB STEP
IC751
NJM2145D
(S-VIDEO Board (US and Canadian models))
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
INH
INH
INPUT
CIRCUIT
OUTPUT
CIRCUIT
CIRCUIT
OUTPUT
CIRCUIT
CIRCUIT
OUTPUT
CIRCUIT
CIRCUIT
VCC
OUT1
IN4
IN3
IN2
OUT3-1
OUT3-2
OUT3-3
GND
INH1
INH2
IN1
NC
OUT2-1
OUT2-2
OUT2-3
IC1101
PCM1800E/2K (DIGITAL Board)
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
SYSCL
K
DOUT
BCK
LRCK
VDD
24
23
22
21
20
19
17
16
15 14 13
18
49
STR-DB870/DB1070
IC1303
BU1924F-E2 (DIGITAL Board (AEP and UK models))
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
V
OUT6
V
OUT5
V
OUT4
V
OUT3
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
IC1201
PCM1604Y/2K (DIGITAL Board)
ANALOG
DIGIT
AL
RCLK
NC
XO
XI
VSS2
T2
VDD2
T1
QUAL
RDA
T
VREF
MUX
VDD1
VSS1
VSS3
CMP
1
4
3
6
5
8
7
2
14
15
16
13
12 11 10
9
CLOCK
PLL 57kHz
RDS/ARI
COMPARATOR
8th SWITCHED
CAPACITOR
FILTER
ANTI-ALIASING
FILTER
BIPHASE
DECODER
PLL
1187.5Hz
DEFFERENTIAL
DECODER
TEST
IC1406
SN74HC153ANS
(DIGITAL Board)
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
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