Sony SA-WCT770 Service Manual ▷ View online
SA-WCT770
25
• IC Block Diagrams
– SUB MAIN Board –
IC101 PST8435UL
IC101 PST8435UL
GND 1
VDD 2
+
–
–
VREF
OUT
4
CD
3
IC103 TC74LCX74FT (EKJ)
14
1 2 3
4 5 6
7
13 12 11
10
9 8
VCC
GND
CK
CLR
CK
CLR
Q
PR
Q
Q
PR
Q
D
D
IC104 CXD9981TN
1
2
2
3
4
4
5
6
INTERNAL PULLUP
RESISTORS TO VREG
PROTECTION
AND
I/O LOGIC
OVERLOAD
PROTECTION
PWM
RCV.
RCV.
CTRL
TIMING
GATE
DRIVE
BTL/PBTL-CONFIGURATION
PULLDOWN RESISTOR
44
43
42
41
40
39
43
42
41
40
39
38
37
37
35
27
16
PWM
RCV.
RCV.
CTRL
TIMING
GATE
DRIVE
BTL/PBTL-CONFIGURATION
PULLDOWN RESISTOR
26
33
34
32
31
31
30
8
PWM
RCV.
RCV.
CTRL
TIMING
GATE
DRIVE
BTL/PBTL-CONFIGURATION
PULLDOWN RESISTOR
29
24
25
23
36
18
19
20
21
22
19
20
21
22
PWM
RCV.
RCV.
CTRL
TIMING
GATE
DRIVE
BTL/PBTL-CONFIGURATION
PULLDOWN RESISTOR
27
28
POWER
ON
RESET
TEMP.
SENSE
UNDER-
VOLTAGE
PROTECTION
4
VREG
I-SENSE
13
14
15
14
15
17
12
7
11
9
10
M3
M2
M1
M2
M1
PWM_C
/RESET_CD
GVDD_B
/DTW
NC
NC
NC
/SD
PWM_A
/RESET_AB
GND
AGND
VREF
PWM_B
OC_ADJ
PWM_D
NC
NC
NC
VDD
GVDD_C
NC
BST_D
GVDD_D
BST_D
GVDD_D
OUT_D
PVDD_D
PVDD_D
PVDD_D
PVDD_D
GND_C
GND_D
GND_D
BST_C
PVDD_C
OUT_C
OUT_C
OUT_B
PVDD_B
PVDD_B
BST_B
GND_A
GND_B
GND_B
PVDD_A
PVDD_A
OUT_A
PVDD_A
OUT_A
GVDD_A
BST_A
NC
BST_A
NC
4
SA-WCT770
26
IC105 CXD9843AR
IC106 MM3411A18URE
IC108 MM3411A33URE
IC108 MM3411A33URE
IC109 SI-3010KM-TLA
12
11
10
9
8
7
6
5
4
3
VSUBC
XVSS
OUTR2
VSSR
OUTR1
VDDR
VSSL
VSSR
OUTL2
OUTL1
VSSL
VDDL
2
1
PWM
CLOCK
GENERATOR
(SECONDARY)
CLOCK
GENERATOR
(PRIMARY)
31
29
25 OVFFLAGL
26 SFLAG
27 INIT
30
S
g P
GAIN
CONTROL
INIT/
MUTE
SAMPLING
RATE
CONVERTER
FILTER &
LOW CUT
FILTER
LINER
INTERPOLATOR
'6
48
XFSOIN
47
XVDD
HPVDDL
46
45
HPOUTL1
HPVSSL
44
43
HPOUTL2
HPVDDR
42
41
HPOUTR1
HPVSSR
40
HPOUTR2
39
37
FSOCKO
38
FSOI
13
XOVSS
14
XFSOOUT
15
XOVDD
16
DVDD
17
DVSS
18
NSPMUTE
19
SOFTMUTE
20
PGMUTE
SERIAL
CONTROLLER
21
SCDT
22
SCSHIFT
23
SCLA
TCH
24
OVFFLAGR
28 MCKSEL
32 BFVDD
33 BFVSS
34 TEST
35 DVDD
36 XFSIIN
LRCK
BCK
DATA
VOUT
3
CE 1
GND 2
VDD
4
+
–
VOLTAGE
REFERENCE
CURRENT
LIMIT
BIAS
1
VC
TSD
2
VIN
3
GND
4
VOUT
5
ADJ
+
–
REF
SA-WCT770
27
– POWER Board –
IC910 STR-A6159M
IC910 STR-A6159M
IC920 STR-W6735N (US, Canadian and Taiwan models)
IC920 STR-W6765N (Except US, Canadian and Taiwan models)
IC920 STR-W6765N (Except US, Canadian and Taiwan models)
1
SOURCE/OCP
8 D
7 D
7 D
5 STARTUP
6 NC
2
VCC
4
FB/OLP
3
GND
THERMAL
SHUTDOWN
DELAY
BUFFER
BLANKING
DISCHARGE
LATCH
INTERNAL
BIAS
UNDERVOLTAGE
LOCKOUT
OVER LOAD
PROTECTION
OVER VOLTAGE
PROTECTION
OVER
CURRENT
PROTECTION
OFF TIMER
DRIVE
+
–
–
S
R
PWM
LATCH
FEED
BACK
BACK
BIAS
BURST
Q
D 1
NC 2
S/GND 3
VCC 4
SS/OLP 5
FB 6
OCP/BD 7
DELAY
Q
R
S
+
–
–
+
–
–
+
–
Q
S
R
+
–
BOTTOM
SELECTOR
COUNTER
OSC
R
Q
S
SOFT START
+
–
–
OVP
REGULATOR
& ICONST
+
–
–
BURST
CONTROL
START/STOP
BURST
PROTECTION
LATCH
DRIVE
REGULATOR
OLP
BSD
BD
OCP
FB
Ver. 1.1
SA-WCT770
28
• IC Pin Function Description
SUB MAIN BOARD IC100 R5F212BASNFP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
NO USE
O
Not used
2
S-AIR_DATA
I/O
Two-way S-AIR data with the RF modulator
3
FW_MODE
I
Not used
4, 5
NO USE
O
Not used
6
RESET
I
System reset signal input terminal “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it change to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it change to “H”
7
Xout
O
System clock output terminal (20 MHz)
8
Vss
-
Ground terminal
9
Xin
I
System clock input terminal (20 MHz)
10
Vcc1
-
Power supply terminal (+3.3V)
11
NO USE
O
Not used
12
P_CONT2
O
Power on/off control signal output terminal “H”: power on
13
P_CONT1 (3.3V)
O
Power on/off control signal output terminal “H”: power on
14
P_CONT_PVDD
O
Power on/off control signal output terminal “H”: power on
15 to 20
NO USE
O
Not used
21
LED_GREEN
O
LED drive signal output terminal for the on/standby lamp (green color) “H”: LED on
22
LED_RED
O
LED drive signal output terminal for the on/standby lamp (red color) “H”: LED on
23
PAIRING_LED
O
LED drive signal output terminal Not used
24
NO USE
O
Not used
25
DAMP_SHIFT
O
Serial data transfer clock signal output to the stream processor
26
NO USE
O
Not used
27
DAMP_SCDT
O
Serial data output to the stream processor
28
DRIVE_RST (EN)
O
Reset signal output to the digital power amplifi er “L”: reset
29
DAMP_INIT
O
Reset signal output to the stream processor “L”: reset
30
DAMP_OVF
I
Overfl ow detection signal input from the stream processor “L”: overfl ow is detected
31
DAMP_LATCH
O
Serial data latch pulse signal output to the stream processor
32
DAMP_SOFT_MUTE
O
Soft muting on/off control signal output to the stream processor “L”: muting on
33
DAMP_OVF2
I
Overfl ow detection signal input terminal Not used
34
DAMP_LATCH2
O
Serial data latch pulse signal output terminal Not used
35
NO USE
O
Not used
36
AC_CUT
I
AC cut detection signal input terminal “L”: AC cut is detected
37
FW_TxD
O
Transmit data output terminal for fl ash writing
38
FW_RxD
I
Receive data input terminal for fl ash writing
39 to 41
NO USE
O
Not used
42
PVDD_SD_EN
O
Shutdown signal output terminal “L”: shutdown
43
DC_DET
I
Speaker DC detection signal input terminal “L”: speaker DC is detected
44
NO USE
O
Not used
45
DRIVE_SD
I
Shutdown signal input from the stream processor “L”: shutdown
46
S-AIR FREQ DET
I
S-AIR module frequency detection signal input terminal Not used
47
S-AIR DET
I
S-AIR detection signal input terminal Not used
48
S-AIR_GPIO2
I
S-AIR interrupt signal input from the RF modulator
49
KEY_POWER
I
Power key input terminal
50
S-AIR_RESET
O
S-AIR reset signal output to the RF modulator “L”: reset
51
KEY_PAIRING
I
LINK key input terminal
52
SUR_MODE_SW
O
Not used
53
SHIMUKE
O
Destination setting terminal Not used
54
MODEL
O
Model setting terminal Not used
55
FAN_ON
O
Fan motor drive signal output terminal Not used
56
FAN_DET
I
Fan motor detection signal input terminal Not used
57
S-AIR_RF_FB
O
Not used
58
NO USE
O
Not used
59
Vss
-
Ground terminal
60
NO USE
O
Not used
61
Vref
I
Reference voltage (+3.3V) input terminal
62
Vcc1
-
Power supply terminal (+3.3V)
63
NO USE
O
Not used
64
S-AIR_CLK
O
S-AIR clock signal output to the RF modulator
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