Sony SEN-T581 / TA-AV581 Service Manual ▷ View online
— 20 —
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
I/O
—
—
O
O
O
O
—
—
O
O
O
O
O
O
O
O
O
O
O
O
—
O
O
O
O
O
O
—
—
O
Function
Ground
Power supply +5 V
10 dB ATT. switch output H when volume ATT. is used
Line mute control output H for muting
Super Woofer phase switch output L for normal, H for reverse
STANDBY LED drive signal output
Not connected
Not connected
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Power supply –28 V power supply for fluorescent tube segment
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Fluorescent tube segment signal output
Not connected
Not connected
Fluorescent tube segment signal output
Pin Name
GND
+5 V
10DB. ATT
FUNC. MUTE
S.W. PHASE
STANDBY LED
NC
NC
S 18
S 17
S 16
S 15
S 14
S 13
S 12
S 11
S 10
S 9
S 8
S 7
VLOAD
S 6
S 5
S 4
S 3
S 2
S 1
NC
NC
DIGI
— 21 —
3-10. IC BLOCK DIAGRAMS
IC300
LV1041M (MAIN BOARD)
12
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
19
17
18
20
21
32
31
30
29
28
27
26
25
24
23
22
33
44
43
42
41
40
39
38
37
36
35
34
73
74
75
76
77
78
79
80
72
65
66
67
68
69
70
71
52
51
50
49
48
47
46
45
53
54
55
56
57
58
59
60
61
62
63
64
STRIM
OSC
VOL
VOL
VCA
VCA
P
B
P
B
VCA
VCA
VCA
VCA
VCA
VCA
IEV
NOISE
GEN
NOISE
FILTER
BPF
CONTROL
CH
CONTROL
BPF
V REF
STRIM
S
MODE
RECT
RECT
DC
CUT
B NR
OUT
FILTER
DATA
DECODER
VOL/
MUTE
BPF
RECT
LOGIC
FF
LOGIC
FF
RECT
C MODE
LOGIC
LOGIC
MASTER
VOL
NF
SW
S
S
S
P
P
B
B
B
B
P
B
C
D
R
L
C
S
L
R
P
P
P
B
P
B
P
B
P
B
P
B
S
MASTER VOL
VDD
PCM
PCM
CONTROL
SRAM
IN
FILTER
R
L
C
S
R
P
B
P
B
P
B
P
B
L
L
R
L
R
R BPF2
R BPF1
S DC OUT
C DC OUT
R DC OUT
L DC OUT
V REF
VCC
C OUT
S OUT
R OUT
L OUT
GND
L IN
R IN
S IN
DELAY OUT
C VOL IN
DET
IREF
R OUT
R NF
L NF
L OUT
L BPF2
L BPF1
RT IN
LT IN
DC CUT
C MODE
GND
NS BPF1
NS BPF1
OSC
NS BPF2
ENABLE
DATA
CLK
DATA
CLK
ENABLE2
VSS
OSC
OSC
VDD
A/D
NS
D/A
DC CUT
VCC
C VOL OUT
C OP IN
GND
C OP NF
C OP OUT
VOL REF
S OP OUT
S OP NF
S OP IN
S VOL OUT
L RECT
DC CUT4
R RECT
DC CUT3
L BPF3
VLR TH
VLR 1
VLR 2
VCS 2
VCS 1
VCS TH
L+R RECT
DC CUT2
L-R RECT
DC CUT1
R DET3
OP VREF
S VOL IN
S OUT
DC CUT
— 22 —
IC101
LC7822 (MAIN BOARD)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CONTROL
LATCH
SHIFT RESISTOR
LEVEL SHIFT
CL
DI
CE
VEE
OUT
IN
OUT
IN
OUT
IN
VSS
S
RESET
VDD
OUT
IN
IN
OUT
IN
OUT
IN
IC301
LC75373ED (MAIN BOARD)
IC551
STK350-230 (MAIN BOARD)
1
2
3
4
5
6
7
8
9
TR3
R1
R2
TR4
TR6
TR7
R4
R9
TR5
TR1
TR2
R6
D4 D3
R7
R8
TR8
D1 D2
R5
R3
INPUT
NF
-VEOUT
+VEOUT
V
SS
GND
V
CC
SUB
IC701
µPC2581V (MAIN BOARD)
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
+
–
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
–
+
–
–
+
–
–
+
–
+
–
DECODER
LATCH
SHIFT
REGISTER
CONTROL
–
+
+
–
–
1
2
3 4
5
6 7 8
9 10
20
19
18
17
16
15
14
13
12
11
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
LSELO
L4
L3
L3
L2
L1
VDD
R1
R2
R3
R4
R4
RSELO
RVRIN
RCOM
RT1
RT2
RT3
RTOUT
RSIN
RS1
RS2
RS3
RSOUT
RFIN
RFOUT
RROUT
VSS
CL
DI
CE
VREF
LROUT
LFOUT
LFIN
LSOUT
LS3
LS2
LS1
LSIN
LTOUT
LT3
LT2
LT1
LCOM
LVRIN
SECTION 4
EXPLODED VIEWS
NOTE:
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences 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.
in the exploded views are not supplied.
•
Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
packing materials are given in the last of this
parts list.
•
Abbreviation
AUS
AUS
: Australian model.
SP
: Singapore model.
The components identified by mark
!
or
dotted line with mark
!
are critical for safety.
Replace only with part number specified.
— 23 —
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
4-1. FRONT PANEL SECTION
1
4-999-844-01 KNOB (VOL)
2
X-4949-434-3 PANEL ASSY, FRONT
3
4-979-942-13 WINDOW
* 4
4-982-462-01 HOUSE, LED
5
4-963-404-02 EMBLEM (5-A), SONY
6
4-979-941-01 BUTTON (SUR)
7
4-979-935-01 BUTTON (F-6)
8
4-980-109-51 BUTTON (P-M)
* 9
1-670-206-11 SW BOARD
* 10
4-982-814-01 LENS (SUR)
* 11
4-982-816-01 BOX (SUR), LED
* 12
4-979-945-01 CASE (414532)
13
3-710-901-11 SCREW, TAPPING
14
1-769-867-11 WIRE (FLAT TYPE) (5 CORE)
15
4-951-620-01 SCREW (2.6
×
8), +BVTP
16
1-773-217-11 WIRE (FLAT TYPE) (25 CORE)
* 17
A-4407-853-A DISPLAY BOARD, COMPLETE
* 18
1-669-721-11 VOL BOARD
* 19
4-979-946-01 PLATE (432), BOTTOM
* 20
4-982-817-01 BOX (CON), LED
* 21
4-982-815-01 LENS (CON)
22
4-628-006-01 CUSHION
23
4-979-937-11 FILTER (SUPER WOOFER)
24
4-979-937-01 FILTER (DOLBY PRO LOGIC)
SONY
13
13
12
13
11
10
9
8
5
4
3
2
1
6
7
21
20
19
18
15
15
14
16
17
a
a
22
24
4
23
#1
#1
#1
#1
#1
#1
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