Sony HT-CT550W / SA-WCT550W Service Manual ▷ View online
SA-WCT550W
5
Note: Follow the disassembly procedure in the numerical order given.
2-2. AMP BLOCK
1 six screws
(BVTP4
u 14)
1 six screws
(BVTP4
u 14)
2 two HDD damper screws
3 bracket (AMP) block
5 speaker connector
(CN105)
7 connector
(CN915)
8 AMP block
AMP block
6 Lift up the clamp (L35).
2 two HDD damper screws
3 bracket (AMP) block
4
front side
rear side
base block
speaker
wire
wire
:LUHVHWWLQJ
3RZHUFRUGVHWWLQJ
base block
rear side
power cord
AMP block
base block
–%RWWRPYLHZOHIWVLGH–
base block
clamp (L35)
:LUHVHWWLQJ
FRONT LED
board
board
AMP block
AMP block
base block
Please push
wire from
FRONT LED
board into the
space.
wire from
FRONT LED
board into the
space.
front side
Wire from
FRONT LED board.
FRONT LED board.
Note: Please spread a sheet
under a unit not to injure
top
side.
front side
SA-WCT550W
6
2-3. PLATE TOP (AMP), FUSE (F900)
2-4. SUB MAIN BOARD
1 fourteen screws
(BVTP3
u 8)
2 plate top (AMP)
3 fuse (F900)
8 three claws
9 holder (air)
0 SUB MAIN board
5 two screws
(BVTP3
u 8)
2 connector
(CN
910
)
1 connector
(CN
901
)
3 two screws
(BV3)
6 four screws
(BV3)
7
front side
rear side
:LUHVHWWLQJ
SUB MAIN board
LED CONNECT
board
board
4 heat sink (AMP)
Note: When you install the heat sink (AMP), spread the compound
referring to “NOTE OF REPLACING THE IC104 ON THE
SUB
MAIN BOARD AND THE COMPLETE SUB MAIN BOARD”
on servicing notes (page 3).
SA-WCT550W
SA-WCT550W
7
7
2-6. LOUDSPEAKER (16 cm) (SP100)
1 four screws
(4
u 40)
4 base (G) block
2
6
3
5 eight screws
(BVTP4
u 14)
7 two terminals
8 loudspeaker (16 cm)
(SP100)
– Bottom view (right side)–
Note: Please spread a sheet
under a unit not to injure
top
side.
2-5. POWER BOARD
2 power cord
connector
(CN
(CN
900
)
power cord
power cord
cord bushing
3 connector
(CN
901
)
255 ± 5 mm
4 three screws
(BV3)
4 screw
(BV3)
5 clamp (L35)
clamp (L35)
wire holder
1
8 POWER board
to POWER
board
board
POWER board
SUB MAIN board
7 label fuse (T.H)
(AEP, UK)
6
front side
rear side
PRZHU FRUG VHWWLQJ
SA-WCT550W
SA-WCT550W
8
8
SECTION 3
DIAGRAMS
3-1. BLOCK DIAGRAM
X101
49.152MHz
CLOCK
BUFFER
IC107
OVER LOAD
DETECT
Q106
L.P.F.
L.P.F.
POWER AMP
IC104
DC DETECT
Q105
PWM_B
6 PWM_A
8
PWM_D
16 PWM_C
18
: AUDIO
STREAM PROCESSOR
IC105
31 DATA
30 BCK
29 LRCK
29 LRCK
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
22 SCSHIFT
23 SCLATCH
27 INIT
FLAGL
19 SOFTMUTE
SL+OUTL1 11
SL-OUTL2 9
SR+OUTR1 6
SR-OUTR2 4
XFSOIN 48
24 FLAGR
25
25
OUT_D
OUT_C 31
36
/SD
5
/RESET_AB
7
/RESET_CD
17
36 XFSIIN
14 XFSOOUT
PRESCALER
IC103
S101
I/
1
POWER
DETECT
Q104
D111
P_CONT1 (3.3V) 13
SYSTEM CONTROLLER
IC100
CN101
SDIO_Z
28
I2CSDA
21
I2CCLK
22
INT
18
RESET
23
+3.3V
BCK_Z
29
LRCK_Z
30
+3.3V
14
+3.3V
+3.3V
13
256FS
17
S-AIR_DATA
2
S-AIR_CLK
64
S-AIR_GPIO2
48
S-AIR_RESET
50
DRIVE_RST(EN) 28
DRIVE_SD 45
DAMP_SCDT 27
DAMP_SHIFT 25
DAMP_LATCH 31
DAMP_INIT 29
DAMP_OVF 30
DAMP_SOFT_MUTE 32
DC_DET 43
PVDD_SD_EN 42
P_CONT_PVDD 14
KEY_POWER
49
KEY_PAIRING
51
9
7
X100
20MHz
Xin
Xout
EZW-RT50/EZW-RT20
WIRELESS
TRANSCEIVER
(EZW-RT50)
22 LED_RED
21 LED_GREEN
D900
LINK/STANDBY
INDICATOR
LED DRIVE
Q109, 111
S100
SECURE LINK
SHUNT
REGULATOR
IC950
(AC IN)
F900
TH900
D911
RECT
D900
LINE FILTER
LF900
( AEP, UK)
LF901
(US, CND, TW)
POWER CONTROL
IC910
T901
SUB POWER
TRANSFORMER
DRAIN
8
DRAIN
7
ISOLATOR
PC901
ISOLATOR
PC902
VCC
2
FB
4
1
POWER CONTROL
IC920
D
T902
MAIN POWER
TRANSFORMER
D924
D928
D925, 926
OVER LOAD
PROTECT
Q921, 922
Q921, 922
4 VCC
7 OCP/BD
5 OLP/SS
TH920
RECT
D940
D902
6 FB
REGULATOR
Q923
D950
POWER ON/OFF
CONTROL
Q960
ISOLATOR
PC903
POWER VOLTAGE
CONTROL
Q961, 962
+3.3V
REGULATOR
IC108
+3.3V_AMP
+3.3V_AIR
+1.8V
REGULATOR
IC106
+1.8V
RESET SWITCH
Q102
RESET 6
AC_CUT 36
E3.3V
RESET SIGNAL
GENERATOR
IC101
P_CONT2 12
+12V
REGULATOR
IC109
+12V
32V
D112
D901
D929 D930 D931
SHUNT
REGULATOR
IC940
RESERVED
1
DETECT
2
PD-OUT_Ajroha
19
S-AIR FREQ DET
46
S-AIR DET
47
S-AIR_RF_FB
57
POWER
DETECT
Q108
SHUT DOWN
SWITCH
Q103
REGULATOR
Q920
B+ SWITCH
Q901
B+ SWITCH
Q110, 112
Abbreviation
SIGNAL PATH
: Canadian model
CND
: Taiwan model
TW
SP100
Ver. 1.1
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