HT-SL70 (serv.man3) - Sharp Audio Service Manual (repair manual). Page 11

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HT-SL70
4 – 3
HT-SL70
5 – 1
CHAPTER 5. DIAGRAMS
[1] Block Diagram
Figure 5-1: BLOCK DIAGRAM
SPDIF Output
HDMI RST
HDMI INT
SDA
SCL
TO/FROM MICOM
+3.3V UNSW
+1.8V
J3
HDMI IN
J7
HDMI OUT
HDMI PWB
TO MAIN PWB
HDMI OUT/ARC
ARC transceiver
EP91H0
5
C
I
K
1
A
1
9
P
E
C
I 3
C
1
1
0
F
P
E
 
I2C
I2C
I2C from
host MCU
AMP OTW
AMP SD
X601
13.5MHz
IC601
PWM IC
TAS5504A
XTL_OUT
XTL_IN
S
DA
S
DIN2
VALID
DAP
R
E
S
DAP_PWDN
DAP_MUTE
S
CL
PWM_P4
PWM_M4
PWM_P1
PWM_P2
DVDD_PWM
ADC IC
PCM1808
VINR
VINL
 VCC
VD
 SCKI
 LRCK
 BCK
 DOUT
MCLK
LRCLK
SCLK
SDIN1
IC501
MICOM IC
R5F21265SNFP
 VCC
LEVEL DETECT
+3.3V
BICOLOR LED
LED_RD
CN700
LED
G
R
FROM SUBWOOFER BOX
TO MICOM
FROM MICOM
FROM MICOM
FROM
MICOM
S
CL
DC RELAY
S
DA
+5V
IC802
HDMI CE2(1.8V)
MM3421JTRE
+1.8V
+3.3V
+3.3V
+3.3V UN
S
W
KEY
RE
S
ET
MODE
UN
S
W 3.3V
MICOM FLASH
CN500
+5V
+5V
IC800
5V REGULATOR
BD9329EF
+12V
+12V
IC901            AS5352A
+12V
+33V
UN_
S
W 3.9V
SMPS
UN_SW 3.9V
+5V
IC502
OP-AMP
(LEVEL DETECT)
+3.3V UNSW
INPUT
SIGNAL
TO MICOM IC
LEVEL DETECT
TO HDMI
+3.3V
TO HDMI
D
NJR12094
VALID
IC803
1117Y33
OTW
Internal Pullup
Resistors to VREG
Protection
and
I/O Logic
SD
M1
M2
RESET_AB
RESET_CD
PWM_D
PWM_C
PWM_B
PWM_A
PWM
Rcv.
M3
Under-
voltage
Protection
Power
On
Reset
Temp.
Sense
VREG
4
4
Overload
Protection
Ctrl.
Timing
PWM
Rcv.
Ctrl.
Timing
Gate
Drive
BTL/PBTL-Configuration
Pulldown Resistor
Gate
Drive
VDD
VREG
AGND
GND
OC_ADJ
GVDD_D
BST_D
PVDD_D
OUT_D
GND_D
GND_C
GVDD_C
GVDD_B
BST_C
BST_B
OUT_B
PVDD_C
PVDD_B
GND_B
GND_A
GVDD_A
BST_A
OUT_A
PVDD_A
OUT_C
sense
BTL/PBTL-Configuration
Pulldown Resistor
PWM
Rcv.
Ctrl.
Timing
Gate
Drive
BTL/PBTL-Configuration
Pulldown Resistor
BTL/PBTL-Configuration
Pulldown Resistor
PWM
Rcv.
Ctrl.
Timing
Gate
Drive
AUDIO IN
JK601
M0004AW
IC302
DIR IC
DIR9001PW
SCKO
DIR AUDIO
DIR FSOUT0
DIR FSOUT1
DIR RST
DIR ERROR
LRCKO
BCKO
 DOUT
C
V/
D
D
V
WI
X
R
CKSEL
X301
12.288MHz
XTO
XTI
Y3 (18.432MHZ)
Y2 (24MHZ)
IC4
Sub-MCU/EPF021A
J20
S/PDIF
S/PDIF MUX
+12V
+12V
+12V
+12V
+33V
CNP301
sw-
sw+
R+
L+
R-
L-
S0901
TO 
S
PEAKER
TO 
S
UBWOOFER
12
+33V
+33V
+33V
HT-SL70
6 – 1
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Notes On Schematic Diagram
[2]  Types Of Transistor And LED
Resistor:
To differentiate the units of resistors, such symbol as 
K and M are used: the symbol K means 1000 ohm 
and the symbol M means 1000 kohm and the 
resistor without any symbol is ohm-type resistor. 
Besides, the one with “Fusible” is a fuse type.
Capacitor:
To indicate the unit of capacitor, a symbol P is used:
this symbol P means pico-farad and the unit of the 
capacitor without such a symbol is microfarad. As to 
electrolytic capacitor, the expression “capacitance/ 
withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
Schematic diagram and Wiring Side of P.W.Board 
for this model are subject to change for
improvement without prior notice.
The indicated voltage in each section is the one 
measured by Digital Multimeter between such a 
section and the chassis with no signal given.
Parts marked with “
” are important for 
maintaining the safety of the set. Be sure to replace 
these parts with specified ones for maintaining the 
safety and performance of the set.
1117Y33
(1) (2) (3)
(1)(2)(3)(4)(5)
TOP VIEW
TOP VIEW
NM3421
W
E
I
V
 
P
O
T
W
E
I
V
 
P
O
T
1N4004
TOP VIEW
DXA010
KRC104S
B
(3)
E
(1)
C
(2)
HT-SL70
6 – 2
[3] Schematic Diagram
Figure 6-1: MAIN SCHEMATIC DIAGRAM
MAIN PWB-A
TO HDMI
FR
OM
S
MP
S
 PWB
FR
OM
S
MP
S
 PWB
TO
 
S
UBW
OOFER 
S
Y
S
TEM
TO
 
S
OUNDBAR 
S
Y
S
TEM
TO LED
FOR
MICOM REFLASH 
ONLY
AUDIO SIGNAL
7
8
9
10
11
12
A
B
C
D
E
F
G
H
1
2
3
4
5
6
HT-SL70
6 – 4
Figure 6-3: MCU SCHEMATIC DIAGRAM
CLOSE TO PAD
TXD
RXD
5V
OP0
GND
TXD
RXD
FOR
FIRMWARE
FLASH ONLY
XOM
XIM
EPF021A_P63
EPF021A_P62
EPF021A_OP0
EPF021A_P71
EPF021A_P70
M33D
M33D
M33D
M33D
5V
M33D
M33D
5V
5V
M33D
M33D
M33D
M33D
M33D
M33D
M33D
M33D
CEC_P3V
M33D
CEC_INTb
HT1_CTLb
CEC_RSTb
CECRX_PRG
PRG_SCL
PRG_SDA
MCU_SCL
DN_SCL
DN_SDA
CLK24M1 
EP91A1K_RSTb
MCU_SDA
ADC0
ADC1
EPF021A_OP0
EPF021A_P70
EPF021A_P71
ARC_RX_EN
ARC_MODE
IIC_SCL
IIC_SDA
P1_PWR5V
ARC_TX_EN
RESET [3]
A_MUTE
HTPLG_A
HDMI_INT
R97
1K
R88
56
DSDA1
1
R103
10K
R144
10K
R142
10K
C81
15p
C81
15p
C78>
0.1u
R122
10K
ASCL1
1
C79
0.1u
R121
10K
R515
10K
R95
1K
R104
10K
R139
10K
R114
2K
R120
10K
R115
2K
C80
0.1u
R145
10K
R517
10K
R119
10K
RP3
8P4R-10K
1
2
3
4
5
6
7
8
R140
10K
MSDA1
1
R700
4K7
R90
10K
R96
1K
Y2
24MHz
Y2
24MHz
C76
15p
C76
15p
MSCL1
1
R137
10K
R116
2K
R127
10K
R113
2K
C77>
0.1u
R92
10K
TP3
TP3
1
R138
10K
R109
10K
R91
10M
R91
10M
R516
10K
ASDA1
1
R112
10K
RP4
8P4R-10K
1
2
3
4
5
6
7
8
R98
2K
R141
10K
R107
10K
D4
BAT54H
D4
BAT54H
2
1
R110
0
R100
1K
C82
0.1u
J8
ICP
1
1
2
2
3
3
4
4
5
5
IC4
EPF021A/0.4mm
EPF021A/0.4mm
P52
21
P54
23
S
PI
_
D
O
46
X_
IN
41
P24
52
VD
D
A
12
P13
61
P70
62
P25
53
V
SS
40
X_
O
U
T
42
opm
0
16
P01
28
P
3
5
7
VD
D
8
P11
59
P12
60
P55
24
P0
6
33
P0
7
3
4
P6
0
3
5
P6
1
3
6
P6
2
3
7
P6
3
3
8
VD
D
3
9
P04
31
P05
32
P56
25
V
SS
44
S
PI
_
C
L
K
45
P57
26
P27
55
P4
1
1
P40
64
P71
63
P10
58
TIM1
57
TIM0
56
P
33
5
P
3
2
4
P
3
4
6
P
3
0
2
AD
C
0
11
AD
C
1
10
P03
30
P02
29
P00
27
R
S
Tb
15
DM
14
DP
1
3
GND
17
P53
22
V
SS
A
9
P
3
1
3
P26
54
P23
51
P22
50
P8
[1
]
48
P21
49
P51
20
P50
19
P8
[0
]
47
P7[4]/CIR
18
VD
D
4
3
R143
10K
DSCL1
1
R106
10K
R101
0
R94
1K
R102>
10K
R99
2K
7
8
9
10
11
12
A
B
C
D
E
F
G
H
1
2
3
4
5
6
MCU Section
HDMI PWB-C
HT-SL70
6
 – 5
[4] Chart Of Connectng Wires
Figure 6-4: WIRING CONNECTION
Bi800
CON2
CON
3
Bi801
CNS700
CNS301
CNS801
CNS800
LINE INPUT
FOR
EXTERNAL MICOM
REFLASH ONLY
TV ARC
HDMI OUT
HDMI IN
FOR
FIRMWARE FLASH
ONLY
TO
SPEAKER SYSTEM
TO
SUBWOOFER 
SMPS PWB-B
HDMI PWB-C
1
J7
J3
J8
J20
CON1
2
1
2
3
4567891
0
11
1
CN
S
101
Bi101
1
2
3
4
5
RD
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
2
3
4567891
0
11
RD
BR
BR
BR
BR
BR
BR
BR
BR
RD
BK
BK
BK
GR
TO
BICOLOR LED
WH
RD
BK
RD
2
BL
BR
BK
1
AC POWER SUPPLY CORD
AC 220-240V ~ 50/60Hz
CN500
12
12
RD
BK
WH
RED
BLACK
WHITE
GY
GRAY
BL BLUE
GR GREEN
BR BROWN
COLOR TABLE
7
8
9
10
11
12
A
B
C
D
E
F
G
H
1
2
3
4
5
6
HT-SL70
6 – 6
[5] Wiring Side Of PWB
Figure 6-5: WIRING SIDE OF MAIN PWB
5 4 3 2 1
12
3
45678
9
10
11
12
1 2
3 4 5
6 7
8
9 1 0
1
2
3
1
2
3
4
12
TOP VIEW
BOTTOM VIEW
7
8
9
10
11
12
A
B
C
D
E
F
G
H
1
2
3
4
5
6
Lead-free solder indication
Lead-free solder is used in the MAIN PWB.
Refer to "Precautions for handling lead-free solder" for instructions 
and precautions.
MAIN PWB-A
HT-SL70
6
 – 7
Figure 6-6: WIRING SIDE OF HDMI PWB
1
2
3
4
5
11
1
HDMI PWB-C
TOP VIEW
BOTTOM VIEW
Lead-free solder indication
Lead-free solder is used in the HDMI PWB.
Refer to "Precautions for handling lead-free solder" for instructions 
and precautions.
7
8
9
10
11
12
A
B
C
D
E
F
G
H
1
2
3
4
5
6
HT-SL70
6 – 8
-MEMO-

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