Sony STR-SE581 Service Manual ▷ View online
— 27 —
3-12. IC BLOCK DIAGRAMS
IC300
LV1016
IC301
LA2786
1
5
6
+
–
+
20
19
18
17
16
15
14
13
21
22
23
24
2
3
4
7
8
9
10
12
11
+
DEC
IN-FILTER
(40kHz)
VDD
ADM-CONT
SRAM
ADM
OUT-FILTER
(7k/5k)
B-NR
DC-OUT
VOL/MUTE
S-TRIM
INV-PHASE
R+DELAY
L+DELAY
A
B
A
B
A
B
A
B
A
B
A
B
A
B
L–R
L+R
(–6dB)
A
B
A.GND
L-OUT
R-OUT
VREF
S-OUT
DELAY-OUT
S-IN
R-IN
L-IN
VCC
NR-DET
ENABLE
DATA
CLK
D.GND
DC-CUT
VDD
OSC
OSC
NR-IREF
DC-CUT
1
2
3
4
5
6
7
8
9
15
10
11
12
–
+
13
14
16
21
18
19
25
17
24
22
23
20
34
32
33
29
30
35
28
31
27
26
36
40
39
38
37
41
42
NOISE
FILTER
NOISE
CH
BALANCE
CONTROL
VR
CONTROL
LPF
V REF
VR
VR
NOISE
GENERATOR
VCA
VCA
VCA
VCA
VCA
VCA
VCA
VCA
LPF
LPF
RECT
RECT
RECT
RECT
P. S.
P. S.
CMODE
MUTE
DIVIDER
OSC
CONTROL
CTRIM
LOG
DIFF
LOG
DIFF
DUAL T
CONTROL
L-IN
R-IN
V
SS
CLK
DATA
V
CC
L-OUT
R-OUT
S-OUT
C-OUT
ENABLE
OSC1
CMODE-CAP.
C-TRIM DC CUT
R-BPF1
R-BPF2
R-BPF3
DC CUT
DC CUT
L-R RECT
L+R RECT
VCS-TH
VCS-1
VCS-2
BPF1
BPF2
VREF
S-CH DC OUT
C-CH DC OUT
L-CH DC OUT
R-CH DC OUT
VREF
L-BPF1
L-BPF2
L-BPF3
DC CUT
DC CUT
R RECT
L RECT
VLR-TH
VLR-1
VLR-2
— 28 —
IC551
STK350-230
IC701
µ
PC2581V
IC950
NJM2103D
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
1
2
3
4
5
6
7
8
V+
VSB/SESIN
VSA
RESET
GND
OUTC
VSC
CR
VREF
+
–
–
+
–
+
–
+
Q
R
S
IC401
LC7822
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
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
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.
The components identified by mark
!
or
dotted line with mark
!
are critical for safety.
Replace only with part number specified.
— 29 —
4-1.
FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
1
4-980-639-01 KNOB (R14)
2
X-4946-873-1 KNOB (R48) ASSY
3
X-4949-644-1 FRONT PANEL ASSY
4
4-989-843-01 BUTTON (P-T)
* 5
4-921-941-01 CUSHION (FL)
* 6
4-943-107-11 HOLDER (FL TUBE)
* 7
4-980-658-01 CASE (413226)
8
3-710-901-11 SCREW, TAPPING
* 9
A-4407-439-A DISPLAY BOARD, COMPLETE
10
1-782-100-11 WIRE (FLAT TYPE) (23 CORE)
11
1-769-911-11 WIRE (FLAT TYPE) (9 CORE)
12
1-782-081-11 WIRE (FLAT TYPE) (15 CORE)
13
4-951-620-01 SCREW (2.6X8), +BVTP
* 14
A-4407-441-A VR-TONE BOARD, COMPLETE
16
3-008-600-11 EMBLEM (5-AR), SONY
* 17
A-4407-442-A KEY BOARD, COMPLETE
18
4-977-358-11 CUSHION
FL201
1-517-141-11 INDICATOR TUBE, FLUORESCENT
SONY
a
a
7
8
8
6
5
8
9
10
13
13
11
12
13
18
14
18
3
1
2
4
5
16
17
FL201
#1
#1
not supplied
#1
#1
VOLUME board
(Including in 14)
(Including in 14)
— 30 —
4-2.
CHASSIS SECTION
54
55
56
63
65
53
70
64
58
71
59
69
60
61
57
62
51
52
not supplied
not supplied
not supplied
not supplied
T901
Transistor
not supplied
#1
#1
#1
#1
#1
#1
#1
#1
#2
#2
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#3
CNJ902
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
* 51
1-665-289-11 SP-SW BOARD
52
4-951-801-01 BUTTON (S)
53
4-812-134-00 RIVET (DIA. 3.5), NYLON
* 54
1-665-286-11 PRIMARY BOARD
* 55
1-665-287-11 SECONDARY BOARD
* 56
1-665-285-11 STANDBY BOARD
* 57
A-4407-444-A MAIN BOARD, COMPLETE
* 58
3-703-244-00 BUSHING (2104), CORD
* 59
4-997-684-21 BACK PANEL
* 60
A-4407-443-A VIDEO BOARD, COMPLETE
61
1-782-668-11 WIRE (FLAT TYPE) (11 CORE)
62
X-4947-208-1 FOOT ASSY (F50150S)
63
4-924-098-01 HOLDER, PC BOARD
* 64
A-4392-780-A SWITCH BOARD, COMPLETE
* 65
4-954-051-51 HOLDER, PC BOARD
69
1-782-243-11 WIRE (FLAT TYPE) 15P
70
3-905-609-01 SCREW (TRANSISTOR)
!
71
1-777-070-21 CORD, POWER
!
CNJ902 1-251-698-11 OUTLET (AC) (2P)
!
T901
1-431-267-21 TRANSFORMER, POWER
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
Click on the first or last page to see other STR-SE581 service manuals if exist.