Sony ST-SDB900 Service Manual ▷ View online
17
17
ST-SDB900
ST-SDB900
3-9. SCHEMATIC DIAGRAM — DISPLAY BOARD —
R819
R818
R817
R816
C828
C827
C826
C825
C822
C808
C809
C817
C818
C819
C820
R812
R813
R814
R815
C813
C807
C805
R809
C811
IC800
C812
C802
S831
S832
S833
S841
S842
S843
R842
R841
R831
R832
CN800
C806
IC802
CN802
CN805
R808
C804
C861
R810
RV801
CN804
CN803
IC801
C801
FL800
FLUORESCENT
INDICATOR TUBE
100
100
100
100
0.01
100p
100p
100p
0.1
0.1
22
100p
100p
100p
0.01
100
100
100
100
0.1
0.1
22
3.3k
39p
ML9208
10
50V
0.1
2.2k
1k
1k
2.2k
17P
100
6.3V
NJL74H400A
3P
3P
AMP-S
47
100
6.3V
0.1
100
3P
AMP-S
3P
AMP
ML9208
0.1
G1
G2
G3
G4
G5
G6
G8
G9
G10
G11
G12
P27
P26
P25
P24
P23
P22
P21
P20
P19
P18
P17
P16
P30
P31
P32
P33
P34
P35
P28
P57
P58
P59
P60
P61
P62
P63
P64
P65
P66
P67
P68
P69
P70
G7
G14
G13
P71
P72
P36
P37
P38
P39
P40
P41
P42
P43
P44
P45
P46
P47
P48
P49
P50
P51
P52
P53
P54
P55
P56
P64
P65
P66
P67
P68
P69
P70
P1
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P28
P27
P26
P25
P24
P23
P22
P21
P20
P19
P18
P17
P16
P29
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
G14
DATA
CLK
CS1
CS2
CLK
DATA
CS1
CS2
CLK
DATA
RST
RST
RST
G15
G15
G16
G16
P62
P61
P60
P59
P58
P57
P63
P53
P52
P36
P51
P50
P49
P48
P55
P54
P47
P46
P45
P44
P43
P42
P41
P40
P39
P38
P37
P56
P72
P71
P29
P30
P31
P32
P33
P34
P35
FL DRIVER
FL DRIVER
REMOTE SENSOR
(CHASSIS)
SELECT
TUNING/
BOARD
(2/3)
MAIN
(Page 13)
18
18
ST-SDB900
ST-SDB900
Pin No.
Pin Name
I/O
Description
48
AC_STOP
I
AC STOP Detection signal input
49
MD0
—
Mode setting (Fixed at “H”)
50
MD1
—
Mode setting (Fixed at “H”)
51
MD2
—
Mode setting (Fixed at “L”)
52
RDS-INT
I
RDS clock interruput signal input
53
RDS-DATA
I
RDS data input
54
SIRCS
I
Sircs code input to remote commander
55
P85
I
Not used (Connected to ground)
56
X_NONSEL
I
Not used
57
P87
I
Not used (Connected to ground)
58
P90
I
Not used (Connected to ground)
59
FL_DATA
O
Serial data output to MLP9208
60
FL_CLK
O
Serial clock output to MLP9209
61
FL_RST
O
Reset signal output to MLP9208
62
FL_CS0
O
Cip select signal output to MLP9209
63
FL_CS1
O
Cip select signal output to MLP9210
64
SIRCS2
I
Sircs code input to remote commander
65
P97
I
Not used (Connected to ground)
66
JOG_P
I
Tuning/Select dial CW signal input
67
JOG_M
I
Tuning/Select dial CCW signal input
68
PA2
I
Not used (Connected to ground)
69
PA3
I
Not used (Connected to ground)
70
P50
I
Not used (Connected to ground)
71
P51
I
Not used (Connected to ground)
72
P52
I
Not used (Connected to ground)
73
TUNED
I
Tuned detection inout for auto tuning
74
STEREO
I
Stereo detection inout
75
TUN_MUTING
O
Tuner muting signal output
76
TUN_DIO2
I
Serial data input from tuner
77
RSTX
I
Sysem reset signal input
78
SLATCH
O
Latch signal outout to tuner
79
X1A
—
Not used (open)
80
X0A
—
Not used (Connected to ground)
81
VSS
—
Ground
82
X0
—
Connected to the crystal oscillator (16MHz)
83
X1
—
Connected to the crystal oscillator (16MHz)
84
VCC3
—
Not used (Connected to ground)
85
X_L_MUTING
O
Latch signal output to CPU
86
DABSEL
O
Latch signal input from CPU
87
P02
I
Not used (Connected to ground)
88
P03
I
Not used (Connected to ground)
89
P04
I
Not used (Connected to ground)
90
P05
I
Not used (Connected to ground)
91
P06
I
Not used (Connected to ground)
92
P07
I
Not used (Connected to ground)
93
P10
I
Not used (Connected to ground)
94
P11
I
Not used (Connected to ground)
• IC Pin Function Description
MAIN BOARD IC300 MB90478PF-G-184-BNDE1 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
MON0
O
Not used (open)
2
MON1
O
Not used (open)
3
MON2
O
Not used (open)
4
MON3
O
Not used (open)
5
P24
I
Not used (Connected to ground)
6
P25
I
Not used (Connected to ground)
7
P26
I
Not used (Connected to ground)
8
P27
I
Not used (Connected to ground)
9
P30
I
Not used (Connected to ground)
10
PWCONT2
I
Not used (Connected to ground)
11
VSS
—
Ground
12
PWCONT1
I
Not used (Connected to ground)
13
P33
I
Not used (Connected to ground)
14
TUN_DIO1
O
Serial data output to tuner unit
15
TUN_CLK
O
Serial clock output to tuner unit
16
P36
I
Not used (Connected to ground)
17
P37
I
Not used (Connected to ground)
18
P40
I
Not used (Connected to ground)
19
P41
I
Not used (Connected to ground)
20
P42
I
Not used (Connected to ground)
21
P43
I
Not used (Connected to ground)
22
P44
I
Not used (Connected to ground)
23
VCC5
—
Power supply (+3.3V)
24
P46
I
Not used (Connected to ground)
25
P47
I
Not used (Connected to ground)
26
BUSY
O
Busy signal output (Not used)
27
DAB_IO2
I
Serial data input from DAB module
28
DAB_IO1
O
Serial data output to DAB module
29
SCKO
I
UART baud rate clock input (1.8432MHz)
30
DAB_PWR
O
DAB module power(+3.3V) ON/OFF signal output to (H:on,L:off)
31
DAB-PWR5
O
DAB module power ON/OFF signal output to (H:on,L:off)
32
WP
O
Write protect signal output to EEPROM
33
SCL
O
Clock output to EEPROM
34
SDA
I/O
Data input/output to EEPROM
35
AVCC
—
Power supply (+3.3V)
36
AVRH
—
Referenc voltage input (connectrd to +3.3V)
37
AVSS
—
Ground
38
KEY_AD0
I
Key input 0
39
KEY_AD1
I
Key input 1
40
KEY_AD2
I
Key input 2
41
KEY_AD3
I
Key input 3
42
VSS
—
Ground
43
FM_SIG_OUT
I
FM signal intense input
44
X_DUAL
I
DAB band select input (L:Dual band,H:Band 3 only)
45
X_WITH_AMP
I
AMP select input (L:with amp,H:Tuner)
46
X_NOFMAM
I
FMAM /DAB select input (L:DAB only,H:DAB/FMAM)
47
P80
I
Not used (Connected to ground)
19
ST-SDB900
Pin No.
Pin Name
I/O
Description
95
P12
I
Not used (Connected to ground)
96
P13
I
Not used (Connected to ground)
97
P14
I
Not used (Connected to ground)
98
P15
I
Not used (Connected to ground)
99
P16
I
Not used (Connected to ground)
100
P17
I
Not used (Connected to ground)
20
ST-SDB900
SECTION 4
EXPLODED VIEWS
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color
Cabinet’s Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
X-2023-286-2 KNOB (VOL) ASSY (BLACK)
1
X-4956-418-1 KNOB (VOL) ASSY (SILVER)
2
4-255-036-11 PLATE, INDICATION (SILVER)
2
4-255-036-21 PLATE, INDICATION (BLACK)
3
4-942-568-41 EMBLEM (NO.5), SONY (BLACK)
3
4-942-568-61 EMBLEM (NO.5), SONY (SILVER)
4
4-255-034-31 PANEL, FRONT (SILVER)
4
4-255-034-41 PANEL, FRONT (BLACK)
5
4-255-041-01 BUTTON (POWER1) (SILVER)
5
4-255-041-11 BUTTON (POWER1) (BLACK)
6
4-255-035-01 CONTROL, REMOTE, WINDOW (SILVER)
6
4-255-035-11 CONTROL, REMOTE, WINDOW (BLACK)
* 7
4-998-495-02 CASE (407026) (BLACK)
7
4-998-495-41 CASE (407026) (SILVER)
8
4-227-843-03 SCREW (TP), FLAT HEAD (BLACK)
8
4-227-843-31 SCREW (TP), FLAT HEAD (SILVER)
9
A-4753-273-A DISPLAY BOARD, COMPLETE
10
4-247-095-02 HOLDER (FL)
* 11
4-921-941-11 CUSHION (FL)
12
1-773-044-11 WIRE (FLAT TYPE) (17 CORE)
13
4-255-045-01 BUTTON (DAB) (SILVER)
13
4-255-045-11 BUTTON (DAB) (BLACK)
14
4-860-518-00 CUSHION
15
4-951-620-01 SCREW (2.6X8), +BVTP
16
3-704-515-22 SCREW (BV/RING) (BLACK)
16
3-704-515-32 SCREW (BV/RING) (SILVER)
FL800
1-518-998-11 INDICATOR TUBE, FLUORESCENT
#1
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
4-1.
CASE, FRONT PANEL SECTION
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
1
not supplied
2
3
4
5
#1
#1
#1
not supplied
not supplied
not supplied
6
16
16
15
7
8
8
8
8
9
10
11
12
15
15
15
15
13
16
13
FL800
14
not supplied
16
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