Sony SA-WM40 Service Manual ▷ View online
3
3
SECTION 1
GENERAL
SECTION 2
DIAGRAMS
• Location of controls
– Front View (a part) –
– Upper View (a part) –
– Rear View (a part) –
2-1.
NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
• Circuit Boards Location
CONTROL board
POWER SW UC board
PS board
POWER TR board
MAIN board
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : Power on
(
no mark : Power on
(
) : Automatic power off
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: AUDIO
• Abbreviation
AUS
: Australian model
CND : Canadian model
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
4
4
SA-WM40
• Semiconductor
Location
Ref. No.
Location
D501
B-3
D502
B-3
D503
D-3
D504
C-2
D505
D-3
D506
C-2
D507
B-8
D508
B-8
D509
F-3
D510
F-2
D511
B-11
D512
D-11
D601
F-4
D602
F-4
D605
G-4
D606
H-2
D801
I-3
D802
I-3
D803
I-2
D804
I-2
D810
H-12
D817
B-4
D818
B-4
D819
B-5
D820
B-5
D821
C-4
D822
C-5
IC501
C-3
IC502
B-3
IC503
B-7
IC504
C-8
IC505
E-3
IC506
B-8
IC507
D-4
IC508
C-8
Q503
F-2
Q504
F-3
Q505
E-3
Q507
B-11
Q508
C-11
Q601
E-4
Q602
E-4
Q603
F-4
Q604
E-4
Q605
E-4
Q606
F-4
Q607
E-8
Q608
F-3
Q609
E-9
Q610
E-7
Q611
G-4
Q612
G-4
Q613
G-3
Q614
G-4
Q801
C-4
Q802
C-5
MAIN BOARD
CONTROL BOARD
POWER TR BOARD
PS BOARD
POWER SW UC
BOARD
JK501
IN
L
OUT
LINE
TM501
IN
OUT
SPEAKER
+
+
–
–
–
–
+
+
R
SW502
POWER SAVE
AUTO
OFF
(CHASSIS)
SP601
1-677-924-
(11)
11
RLY601
1-677-927-
(11)
11
1
3
1
3
VR501
LEVEL
SW501
PHASE
VR502
1
5
CUT OFF FREQ
D512, S801
POWER
3
1
NORMAL REVERSE
1-677-925-
(11)
11
1-677-933-
(11)
11
AC IN
T801
POWER TRANSFORMER
T851
POWER TRANSFORMER
1-677-926-
(11)
11
1
A
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
–1
–2
2-2.
PRINTED WIRING BOARDS (US, Canadian models)
•
See page 3 for Note on Printed Wiring Boards.
• See page 3 for Circuit Boards Location.
Ver 1.2
5
5
SA-WM40
2-3.
SCHEMATIC DIAGRAM (US, Canadian models)
•
See page 3 for Note on Schematic Diagram.
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
Ver 1.2
6
6
SA-WM40
C506
BC803
D819
D820
JW1
JW2
D817
D818
R804
C804
+
D822
C803
+
D821
Q802
B
E
C808
+
C807
+
R803
C
Q801
R651
R645
C620
R663
R647
R646
R648
R642
R643
R644
R649
C619
C621
R652
JW3
R653
IC507
R661
C810
+
C809
+
C623
R650
R511
JW5
JW13
JW6
C519
+
C524
+
CN501
D501
D502
IC502
IC501
R537
R510
R539
R514
R547
R548
C507
R549
C505
D505
D503
D506
D504
C503
C504
R513
R501
R504
R505
R502
R553
R554
R506
R545
R503
JW15
JW14
JW7
Q505
B
E
C
R555
IC505
R538
R544
R543
R546
Q503
B
E C
D509
Q504
E
B
C
C604
Q608
B
E
C
Q606
B
E
C
D602
D601
Q605
Q604
C603
R605
Q601
B
E
C
Q602
R601
C601
C611
R602
R609
C608
+
C618
R618
C602
+
R606
R607
R608
R603
R625
JW4
RLY601
R641
R640
D605
R610
R611
R659
R658
C617
+
B
E
C
E
B
C
E
B
C
B
E
C
R662
Q613
E
B
C
Q614
B
E
C
B
E
C
Q611
B
E
C
Q612
R657
+
+
C615
C616
R655
R654
R656
JW8
JW16
JW18
JW9
JW10
JW11
C801
+
C802
+
BC602
CN804
BC503
JW27
D801
D802
D803
D804
CN801
D606
C818
R660
R615
CN603
1
6
R617
D510
R540
R616
+
C525
R541
R542
R508
1
4
5
8
C502
R507
C501
+
R509
1
3
B
E
C
5
8
4
1
R604
1
2
1
2
1
5
4
5
1
8
4
1
5
8
5
1
JK501
TM501
SW502
D508
VR502
1
5
R556
R533
R531
C526
R557
C527
IC506
5
8
4
1
IC508
5
8
4
1
D507
R532
R529
R526
R527
R525
C514
C513
R523
IC504
5
8
4
1
JW12
R522
R517
C512
C511
R521
IC503
5
8
4
1
JW17
R520
R519
C510
C509
R518
C517
R515
R516
C508
+
+
SW501
VR501
1
3
C515
C518
C516
+
BC501
1
5
R530
R528
T801
POWER TRANSFORMER
JW24
JW26
JW25
C812
C811
BC801
3
1
C851
BC806
2
1
1
2
BC802
F801
RLY801
2
1
BC804
D810
1
CN803
3
T851
POWER TRANSFORMER
Q607
B
E
C
R613
R614
R612
C605
JW22
JW23
1
6
BC603
R622
R624
Q610
E
B
Q609
E
B
R621
R623
JW21
JW20
Q558
B
E
C
Q557
E
B
C
D553
BC551
3
1
BC851
1
2
C852
S851
R560
D552
R561
R562
R512
Q603
3
1
MAIN BOARD
LINE
IN
OUT
+
–
+
–
–
–
+
+
TM501
SPEAKER
IN
OUT
L
R
SW502
POWER SAVE
AUTO
OFF
(CHASSIS)
(11)
11
1-686-498-
SP601
CONTROL BOARD
VR501
LEVEL
SW501
PHASE
VR502
CUT OFF FREQ
(11)
11
1-677-925-
POWER TR BOARD
(11)
1-677-927-
11
PS BOARD
AC IN
(11)
1-686-501-
11
(11)
1-686-500-
11
D552, S851
POWER
POWER SW CE BOARD
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
12
C
C
• Semiconductor
Location
Ref. No.
Location
D501
A-2
D502
B-2
D503
D-2
D504
C-2
D505
C-2
D506
C-2
D507
B-8
D508
B-9
D509
E-2
D510
F-2
D552
D-11
D553
B-11
D601
F-2
D602
E-3
D605
F-4
D606
G-2
D801
I-3
D802
I-3
D803
I-2
D804
I-2
D810
H-11
D817
B-4
D818
B-4
D819
B-4
D820
B-4
D821
B-4
D822
B-4
IC501
C-2
IC502
B-2
IC503
B-7
IC504
C-7
IC505
E-2
IC506
B-8
IC507
C-4
IC508
C-8
Q503
E-2
Q504
F-2
Q505
E-2
Q557
B-11
Q558
B-11
Q601
E-4
Q602
E-4
Q603
E-4
Q604
E-3
Q605
E-3
Q606
F-3
Q607
D-7
Q608
F-3
Q609
D-8
Q610
D-9
Q611
G-3
Q612
G-3
Q613
G-3
Q614
G-3
Q801
B-3
Q802
B-4
2-4.
PRINTED WIRING BOARDS (Except US, Canadian models)
•
See page 3 for Note on Printed Wiring Boards.
• See page 3 for Circuit Boards Location.
Ver 1.2
