Sharp SD-AT50H (serv.man11) Service Manual ▷ View online
– 11 –
SD-AT50H
Figure 11 BLOCK DIAGRAM (1/9)
ANALOG SIGNAL
INPUT
OUTPUT OFFSET
ADJUSTMENT
+5V
ADIC INSIDE
(IX2815AF)
IN
NF+
A+5V
D+5V
D+5V
OUT+
OUT-
NF–
B, S
B, S
B, S
B, S
H-IN
L-IN
H-IN
L-IN
VKK
D+5V
VCC
VDD(D+5V)
+POWER
-POWER
+POWER
-POWER
ICA102, ICA107
ICA202, ICA207
ICA302, ICA307
ICA202, ICA207
ICA302, ICA307
SLA5505M
SWITCHING AUDIO
POWER AMP.
LOW PASS FILTER
LOAD
OFFSET
DETECTION CIRCUIT
NF
+B
A+5V
KIA78M05
KIA78M05
KIA78M05
IN
IN
OUT
GND
ICA101, ICA201, ICA301
TC74AC8T
QUAD 2 INPUT AND GATE
OUT
-B
-B
+B
-B
GND
GND
+B
D+5V
IN
OUT
GND
REFERENCE
VOLTAGE + 6.5 V
-POWER
DEADTIME CONTROL
(6 CH AVAILABLE)
+
–
+
–
+
–
ICA100, ICA200, ICA300
IX2815AF
7TH ORDER
∆∑
MODULATION
CONVERSION LSI
ICA401
KIA7805AP VOLTAGE
REGULATOR
ICA402
KIA7805AP VOLTAGE
REGULATOR
ICA400
KIA7806AP VOLTAGE
REGULATOR
OVERCURRENT/
OVERHEAT DETECTION CIRCUIT
SD-AT50H
– 12 –
Figure 12 BLOCK DIAGRAM (2/9)
LED
LED6
LED5
LED4
LED3
LED2
LED1
RMS1
GP1UD271
REMOCON SENSOR
2
1
LED10
SO1
HEADPHONES
LED9
1
2
3
4
5
6
7
8
9 10 11 12
3
Q8
Q1
Q2
Q3
Q4
Q5
Q6
LCD1
V5OUT
V2OUT
VLCD
VLOUT
C1-
C1+
VCC
GND
SDA
SCL
CS
RESET
RXIN
LED
LED DRIVER
LED DRIVER
LED
DRIVER
LED DRIVER
LED DRIVER
LED
DRIVER
LED
DRIVER
Q9
LED DRIVER
– 13 –
SD-AT50H
Figure 13 BLOCK DIAGRAM (3/9)
LED7
LED6
D5
LED8
ES
CN502A
BACK_LIGHT
STRLED
KEY_1
LCDSDA
LCDSCL
LCDCS
LCDRESET
DTSLED
STDLED
POWERKEY
DDLED
DPLLED
VIRLED
TIMERLED
LED9V
Q5
Q6
Q7
+5V(D)
+3.7V(UN-SWD)
GND(U-COM)
H.P SW
L-CH
GND(A)
R-CH
RXIN
+5V(D)
+3.3V(SWD)
GND(D)
N
R-CH
L-CH
H.P SW
25
24
23
22
21
20
19
18
17
15
13
12
11
10
9
8
7
6
5
4
3
2
1
16
14
SW2~SW5
LED DRIVER
LED DRIVER
D DRIVER
SW1
TO DSP SECTION
SD-AT50H
– 14 –
Figure 14 BLOCK DIAGRAM (4/9)
CN501A
JT502
VTR/AUX
TERMINAL
Q528
CN503A
Q502
Q501
JT501
DVD/CD/TV
TERMINAL
IC501
BD3811K1
VOLUME IC
80
79
78
77
77
76
75
74
73
72
71
70
69
68
67
66
65
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
17 16 15 14
1
2
3
4
5
6
7
8
9
10
11
12
13
24 23
18
19
20
21
22
41 42 43 44 45 46 47 48 49 50 51 52
64
63
62
61
60
59
58
57
56
55
54
53
+5V(D)
RIN
LIN
ROUT3
LOUT3
LOUT2
ROUT2
CCB_CE
CCB_DI
AMP_CLK
LOUT1
ROUT1
AMP_SOUT
TUNER_SM
CCB_DO
CCB_CL
FM_STB
AMP_STB
AMP_INT
AMP_SIN
OUTSW
OUTC
OUTSR_
OUTSR_
VOL_CL
VOL_DA
S_MUTE
+12V
CONFIG
AGND
HP_R
HP_L
S_MUTE
PROTECT
CONFIG
VOL_CL
VOL_DA
BS_RCH
BS_LCH
TV_LCH
TV_RCH
DVDA_LCH
DVDA_RCH
TUN_L
TUN_R
VTR_RCH
VTR_LCH
AUX
VTR
TV
DVD
R-CH
L-CH
LC
H
R-CH
R-CH
L-CH
L-CH
R-CH
R-CH
GND(A)
L-CH
GND(U-COM)
+3.7V(UN-SWD)
GND(A)
+9V(A)
GND(D)
+5V(D)
GOUTC
AGND2
VINSW
GOUTSW
AGND1
IN DSPSL
INDSPC
IN DSPSW
OUTSL
OUTSR
VINSL
VINC
OUTSW
OUTC
VINSR
IN2DSP
OUT1(+)
IN DVDSR
VCC
DA
GOUTSR
IN1MIX
OUT2(-)
CL
MUTE
OUT2(+)
INDVD SW
AGND5
AGND6
VEE
AGND4
DGND
OUT1(-)
IN1DSP
INDVDC
IN DVDSL
IN82
AGND8
IN81
IN72
IN71
IN62
OUT2
BBNF1
OUT1
BNF22
BBNF2
IN61
IN52
IN51
BNF12
BNF21
BNF11
IN41
IN42
TNF1
IN32
IN21
GOUT1
AGND9
IN12
IN11
IN11
VIN2
GOUT2
ROUT32
ROUT31
ROUT31
AGND10
ROUT11
ROUT22
ROUT21
ROUT21
ROUT12
GOUTSL
AGND3
AGND7
TNF2
VIN1
IN22
IN DSPSR
IN2MIX
IN31
25
24
23
22
8
7
14
11
12
15
6
10
3
1
5
4
2
13
9
19
16
17
21
18
20
1 2
4
3
5 6
8
7
9
TO DSP SECTION
TO DSP SECTION