Read Sony STR-DB900 Service Manual online
13
13
STR-DB900
STR-DB900
4-1. BLOCK DIAGRAM
— INPUT/TUNER SECTION —
11
15
15
13
3
1
10
9
14
12
1
7
1
2
3
12
J701
J702
VIN1
VIN3
VOUT1
VOUT2
VIN2
VSEL-A
VSEL-B
D807
NC
D806
10
5
2
13
11
4
1
3
7
3
16
14
2
10
11
12
12
13
6
5
4
3
9
1
IR RECEIVER
IC213
BUFFER
IC106
BUFFER
IC104
A/D CONVERTER
IC107
A/D CONVERTER
IC105
A/D CONVERTER
IC103
DIR
IC217
BUFFER
IC102
INPUT SELECT
IC101
IR TRANSMITTER
IC212
IR RECEIVER
IC218
IR RECEIVER
IC214
VIDEO INPUT SELECT
IC701
INPUT SELECT
IC211
3
1
1
5
12
11
11
10
15
7
12
1
3
1
11
10
10
15
7
12
1
11
10
10
15
7
22
20
21
14
15
13
34
10
35
36
37
38
47
48
24
J101
J201
R-CH
R-CH
X3
TU-TUNED
R-CH
8
10
10
6
7
11
7
11
3
2
1
4
13
15
14
14
TU-STEREO
TU-MUTE
TU-MUTE
TU-DATA
TU-DO
TU-CLK
TU-LATCH
TU-LATCH
RDS-SIG
RDS-DATA
RDS-INT
RDS-INT
X
L CH
R CH
MUTE
STEREO
TUNED
CLK
FM SIG OUT
RDS-DATA
RDS-INT
CE
ST-DI/MC-DO
ST-DI/MC-DI
A
B
X2
X1
X0
X0
ASEL-A
ADC-DATA-L/R
ADC-DATA-SL/SR
ADC-DATA-C/SW
ADC-DATA-C/SW
DIR-DATA
BCK
BCK
LRCK
CONT-1
VINL
DOUT
BCK
LRCK
SCKI
PDWN
DOUT
BCK
LRCK
SCJI
PDWN
+10V
ASEL-B
VINL
VINR
ADC-MCK
ADC-RST
+12V
1Y
A
B
2C0
2C1
2C2
2C3
1C0
1C1
1C1
1C2
1C3
1C3
DATA(O)
MCK
DIR-AUDIO
DIR-XMODE
DIR-CKSEL
DIR-CLK
DIR-CE
DIR-DI
DIR-DO
DIR-ERR
BCK(O)
CKOUT(I)
LRCK(O)
AUDIO-(O)
XMODE(I)
CKSEL1(I)
CL(I)
CE(I)
DI(I)
DO(O)
ERROR(O)
DIN0(I)
XMCK(O)
XIN(I)
XOUT(O)
X203
12.288MHz
DSEL-A
DSEL-B
2Y
Q202
IC108
4
1
Q201
R-CH
R-CH
J102
AEP,UK MODEL
Q102
Q101
L
FRONT
R
L
R
ANTENNA
AM
FM/AM TUNER
TM101
COAXIAL
FM
75
Ω
MULTI
CH IN
SURROUND
CENTER
SUB WOOFER
L
R
L
R
ANALOG
DVD IN
DVD IN
OPTICAL
DIGITAL
VIDEO
VIDEO
IN
DVD IN
COAXIALIN
HDD/MD
IN
HDD/MD
OUT
VIDEO
IN
MONITOR
OUT
TV/SAT
IN
TV/SAT
IN
DVD
IN
CONT-2
3
1
+10V REG.
IC109
DELAY
Q203,204
LPF(0)
3
2
WAVE
SHAPER
IC216
VINL
DOUT
BCK
LRCK
SCKI
PDWN
A
AUDIO DSP
SECTION
(Page 14)
: FM
: VIDEO
• R-ch is omitted due to same as L-ch.
• Signal path
• Signal path
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