Sony HT-K25 / SA-WMS25 (serv.man2) Service Manual ▷ View online
5
SA-WMS25
SECTION 2
DIAGRAMS
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
• b
: Pattern from the side which enables seeing.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. p: pF. 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
•
2
: nonflammable resistor
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation
•
f
: internal component
•
A
: B+ Line
•
B
: B– Line
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : Power on
no mark : Power on
• Voltages are taken with a VOM (Input impedance 10M
Ω
).
Voltage variations may be noted due to normal preduction
tolerances.
tolerances.
• Signal path.
F
: ANALOG INPUT
c
: DIGITAL INPUT
• Abbreviation
MX
: Mexican model
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Waveforms
1
IC300
4
2V/DIV, 10ns/DIV
6.5Vp-p
20.3ns
3
IC605
qs
(MCLK2)
1V/DIV, 40ns/DIV
4.1Vp-p
73.5ns
2
IC501
id
(X1)
1V/DIV, 100ns/DIV
3.9Vp-p
200ns
4
IC606
wa
(XOUT)
1V/DIV, 40ns/DIV
81.5ns
4.8Vp-p
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
6
SA-WMS25
2-1. Block Diagrams — Power Section —
T901
AC
IN
+5.6V
REG
1
3
IC905
LF901,902
LINE
FILTER
D903
F901
REG
Q905
D
3
OCP/SYNC
1
VCC
4
GND
2
FB/OLP
5
IC901
SWITCHING REG
PC901
RECT
D911
D916
D302
D303
D301
D906
ERROR
AMP
2
1
IC902
+6.2V
REG
1
2
IC907
5
+12V
REG
1
2
IC903
5
Q906, 908
SWITCH
D919
D920
PC902
RESET
8
7
6
IC910
PWCNT2
PWCONT2
VCONT
PWCONT1
STOP
STOP
D/AOUT
STOP
PWCNT1
+3.3V
REG
1
3
IC908
+28V
+6.2V
+3.3V
+5V
+3.3V
REG
1
75
63
76
52
3
IC906
+3.3V
FOR
FLASH
PROGRAMMING
+5.6V
+5.6V
+12V
Q901, 903
SWITCH
Q913, 915
BUFFER
Q902, D905
REG
IC904
VCC
IC904
1
3
2
IC501 (2/2)
SYSTEM CONTROL
CNP602 (2/2)
CONTROL
POWER
TO
TA-VE25
7
7
SA-WMS25
— DSP/AMP Section —
: ANALOG INPUT
: DIGITAL INPUT
• Signal Path
RIN
5
15
DOUT
14
BCK
13
LRCK
IC604
AUDIO
A/D CONV
LIN
1
5
DI
6
DO
3
CLK
4
CE
CE
DI
DO
CLK
RSTB
6
SYSCLK
16
DO
DI
CLK
CE
IC606
DIN2
5
DO
35
DI
36
CLK
38
CE
37
XIN
22
XOUT
21
ERROR 34
AUDIO 24
X602
12.288MHz
16
DATAO
13
CKOUT
14
BCK
15
LRCK
20
XMCK
DIGITAL AUDIO
I/F RECEIVER
XMODE
48
CLKSEL1
47
17
XSTATE
SDI1
18
23
SDO1
IC605
AUDIO DSP
SDI2
30
BCKI1
17
BCKI2
29
LRCKI1
15
KFSIO
22
LRCKI2
28
MCLK1
9
MCLK2
12
X601
D601
13.5MHz
GP8
59 EXLOCK
69
BST
56
HDIN
33
HCLK
34
HCS
36
PM
113
XRST
2
25
SDO3
24
SDO2
20
BCKO
19
LRCKO
67
GP10
14
SCKOUT
112
110
.
109
97
.
92
82
85
.
83
66
.
64
.
A0-15
45
WE0
44
CS0
IC603
SRAM
108
107
.
105
102
99
98
80
.
77
75
.
72
.
D0-15
.
68
GP9
32
HACN
35
HDOUT
59
87
90
18
91
SDATA
60
SSHIFT
56
AMPCE1
57
AMPCE2
58
AMPCE3
64
RST
61
NSPMUTE
62
PGMUTE
66
EN
54
DIAG
GP9
HACN
HDOUT
XRST
88
BST
92
PM
89
HCS
20
HCLK
19
HDIN
7
PD
100
D
ATA
O
98
ERROR
99
XS
TAT
E
1
XMODE
77
51
RSTX
2
CLKSEL1
X1
83
X0
82
X501
5MHz
+2.6V
REG
IC607
3
1
+2.6V
5V
D605
Q502
DATA
43
IC305
STREAM PROCESSOR
STREAM PROCESSOR
STREAM PROCESSOR
XFS1IN
64
BCK
44
LRCK
45
SCDT
38
SCSHIFT
37
SCLATCH
36
INIT
41
NSPMUTE
39
PGMUTE
40
XFS0IN
28
2
4
FS0I
74
IC300
X301
49.152MHz
24
OUTL1+
15
OUTL2+
10
OUTR1+
1
OUTR2+
77
XFS0OUT
73
FS0CKO
DT C/SW
DT FL/FR
DT SL/SR
SCK
BCKO
LRCKO
DATA
43
IC308
XFS1IN
64
BCK
44
LRCK
45
SCDT
38
SCSHIFT
37
SCLATCH
36
INIT
41
NSPMUTE
39
PGMUTE
40
XFS0IN
28
FS0I
74
24
OUTL1+
15
OUTL2+
77
XFS0OUT
INA
6
9
OUTA
IC301
POWER DRIVER (FL)
INB
16
ENA
7
ENB
17
DIAGA
8
19
OUTB
DIAGB
18
INA
6
9
OUTA
IC304
POWER DRIVER (FR)
INB
16
ENA
7
ENB
17
DIAGA
8
19
OUTB
DIAGB
18
INA
6
9
OUTA
IC306
POWER DRIVER (C)
INB
16
ENA
7
ENB
17
DIAGA
8
19
OUTB
DIAGB
18
INA
6
9
OUTA
IC307
POWER DRIVER (W)
INB
16
ENA
7
ENB
17
DIAGA
8
19
OUTB
DIAGB
18
INA
6
9
OUTA
IC309
POWER DRIVER (RL)
INB
16
ENA
7
ENB
17
DIAGA
8
19
OUTB
DIAGB
18
INA
6
9
OUTA
IC311
POWER DRIVER (RR)
INB
16
ENA
7
ENB
17
DIAGA
8
19
OUTB
DIAGB
18
DATA
43
IC318
XFS1IN
64
BCK
44
LRCK
45
SCDT
38
SCSHIFT
37
SCLATCH
36
INIT
41
NSPMUTE
39
PGMUTE
40
XFS0IN
28
FS0I
74
24
OUTL1+
15
OUTL2+
10
OUTR1+
1
OUTR2+
SCDT
SHIFT
LAT1
LAT2
LAT3
RST(INIT)
NSMUTE
PGMUTE
EN
DIAG
10
OUTR1+
1
OUTR2+
L
FRONT
REAR
R
FRONT
REAR
CENTER
SPEAKER OUT
(WOOFER)
L401,C401
LPF
L401,C402
LPF
L402,C403
LPF
L401,C404
LPF
L405,C409
LPF
L405,C410
LPF
L406,C412
LPF
L406,C413
LPF
L403,C405
LPF
L403,C406
LPF
L404,C407
LPF
L404,C408
LPF
DC DETECT
DC DETECT
DC DETECT
DC DETECT
DC DETECT
DC DETECT
SWITCH
J401 (1/3)
J401 (2/3)
J401 (3/3)
Q503
Q504
55
BUSYIN
30
BUSYOUT
Q501
IC602
IC601 (1/2)
IC601 (2/2)
3
3
5
5
2
6
1
1
7
7
CNP602 (1/2)
CNP501
CONTROL
TO
TA-VE25
Q401,
Q411
Q411
Q403,
Q413
Q413
Q404,
Q414
Q414
Q405,
Q415
Q415
Q406,
Q416
Q416
Q402,
Q412
Q412
Q328
MD2
MD2
49
MD0
MD0
27
COMIN
28
COMOUT
RESET
LCH+
LCH-
RCH+
RCH-
D.SIG
BUSY(MAIN)
COM(SUB)
COM(MAIN)
FLASH1
FLASH2
FLASH
PROGRAMMING
IC501 (1/2)
SYSTEM CONTROL
8
8
SA-WMS25
2-2. Printed Wiring Board — DIGITAL AMP Section (Side A) —
IC305
IC300
IC308
IC318
(Page 15)
Ref. No.
Location
D331
A-2
D332
B-2
D333
B-2
D334
C-2
D335
D-2
D336
D-2
D341
A-4
D342
B-4
D343
C-4
D344
C-4
D345
D-4
D346
E-4
D361
A-3
D362
B-3
D363
C-3
D364
D-3
D365
D-3
D366
E-3
IC300
A-1
IC305
B-1
IC308
C-1
IC318
D-1
Q328
C-5
• Semiconductor
Location
•
: Uses unleaded solder.
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