DOWNLOAD Sharp HT-SB250 (serv.man2) Service Manual ↓ Size: 5.82 MB | Pages: 54 in PDF or view online for FREE

Name: Sharp HT-SB250 (serv.man2)
Brand: Sharp
SKU: 33524
Rating: 4 (1 reviews)

Model: HT-SB250 (serv.man2)
Pages: 54
Size: 5.82 MB
Type: PDF
Document: Service Manual
Brand: Sharp
Device: Audio / Home Theatre
File: ht-sb250-sm2.pdf
Date: 2018-11-20

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Sharp HT-SB250 (serv.man2) Service Manual ▷ View online

HT-SB250
7 – 5
IC604  RH-IXA289AW00 : System Microcomputer ( IXA289AW ) ( 1/3 )
PIN
NO.
NAME
INPUT/
OUTPUT
FORM
SOFT
PULL-UP
FUNCTION OUTLINE
PORT_TYPE
1
NO USE
-
-
-
No  Use
NC
2
SCL
OUTPUT
CMOS INPUT/
OUTPUT
OFF
[12C bus] Enhancer Micom IF clock, N-ch open drain.
P3_5/SCL/SSCK
3
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
No Connect
P3_3/SSI
4
SDA
OUTPUT
CMOS INPUT/
OUTPUT
OFF
[12C bus] Enhancer Micom IF data Input/Output, 
N-ch open drain.
P3_4/SDA/SCS
5
MODE
INPUT
INPUT
-
Connect to VCC with 10 kohm resistor
MODE
6
XCIN
INPUT
CMOS INPUT/
OUTPUT
OFF
No Use
P4_3/XCIN
7
XCOUT
OUTPUT
CMOS INPUT/
OUTPUT
OFF
No Use
XCOUT
8
RESET
INPUT
INPUT
-
Micom reset input. Active is L. 
During FLASH, connect to reset at WRITER.
RESET
9
XOUT
OUTPUT
-
-
-
XOUT/P4_7
10
GND
-
-
-
Connect to GND (VSS)
VSS/AVSS
11
XIN
INPUT
-
-
-
P4_6/XIN
12
VCC
-
-
-
Micom input supply (3.3V)
Backup power supply
VCC/AVCC
13
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P2_7/TRDIOD1
14
LED_CLK
OUTPUT
CMOS INPUT/
OUTPUT
OFF
LED DRIVER CONTROL CLOCK
P2_6/TRDIOC1
15
PWR_LED_STBY 2
OUTPUT
CMOS INPUT/
OUTPUT
OFF
H setting: LED ON
L setting: LED OFF
P2_5/TRDIOB1
16
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P2_4/TRDIOA1
17
LED_DIN
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Communication with LED DRIVER. 
Command transmit (Data transfer to FLASH WRITER)
P2_3/TRDIOD0
18
LED_STB
OUTPUT
CMOS INPUT/
OUTPUT
OFF
LED DRIVER STROBE CONTROL
P2_2/TRDIOC0
19
LED_DOUT
INPUT
CMOS INPUT/
OUTPUT
OFF
Communication with LED DRIVER. 
Command received (Data transfer to FLASH WRITER)
P2_1/TRDIOB0
20
PWR_LED_STBY 1
OUTPUT
CMOS INPUT/
OUTPUT
OFF
H setting: LED ON
L setting: LED OFF
P2_0/TRDIOA0/TRDCLK
21
RX_IN
INPUT
CMOS INPUT/
OUTPUT
OFF
[INT] SHARP format, REMOCON input
P1_7/TRAI0/INT1
22
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P1_6/CLK0
23
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P1_5/RXD0/(TRAI0)/(INT)
24
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P1_4/TXD0
25
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P1_3/KI3/AN11
26
NO USE
OUTPUT
-
-
No Use
NC
27
SRS_RSTB
OUTPUT
CMOS INPUT/
OUTPUT
OFF
SRS_Reset
P4_5/INT0
28
SRS_MUTE_B
OUTPUT
CMOS INPUT/
OUTPUT
OFF
SRS_Mute
P6_6/INT2/TXD1
29
SYS_STOP
INPUT
CMOS INPUT/
OUTPUT
OFF
AC power fail detect.
Enter STOP mode when detect SYS_STOP “L”
P6_7/INT3/RXD1

HT-SB250
7
 – 6
IC604  RH-IXA289AW00 : System Microcomputer ( IXA289AW ) ( 2/3 )
PIN
NO.
NAME
INPUT/
OUTPUT
FORM
SOFT
PULL-UP
FUNCTION OUTLINE
PORT_TYPE
30
SRS_WDC
INPUT
CMOS INPUT/
OUTPUT
OFF
SRS_WDC
P1_2/KI2/AN10
31
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P1_1/KI1/AN9
32
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P1_0/KI0/AN8
33
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P3_1/TRB0
34
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P3_0/TRA0
35
POWER (DC RELAY)
OUTPUT
CMOS INPUT/
OUTPUT
OFF
MAIN POWER CONTROL.
H: POWER ON ; L: POWER OFF
P6_5/CLK1
36
KEY POWER
INPUT
CMOS INPUT/
OUTPUT
OFF
MAIN SET KEY (POWER)
P6_4
37
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P6_3
38
LVL_DETECT
INPUT ANALOG/
DIGITAL
CMOS INPUT/
OUTPUT
OFF
LEVEL DETECT
P0_7/AN0
39
NO USE
-
-
-
Port not connected
NC
40
NO USE
-
-
-
Port not connected
NC
41
AREA
INPUT ANALOG/
DIGITAL
CMOS INPUT/
OUTPUT
OFF
Destination setting
P0_6/AN1
42
KEY_1
INPUT ANALOG/
DIGITAL
CMOS INPUT/
OUTPUT
OFF
[A/D] Main set key input
P0_5/AN2
43
SYS_PROTECT
INPUT ANALOG/
DIGITAL
CMOS INPUT/
OUTPUT
OFF
System power abnormal detection
P0_4/AN3
44
VREF
INPUT
INPUT
-
Reference Voltage input port (connect to VCC)
P4_2/VREF
45
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P6_0/TRE0
46
AMP_PWDN
OUTPUT
CMOS INPUT/
OUTPUT
OFF
AMP PWR DOWN = set L during standby
Normal operation = set H
P6_2
47
AMP_RESET
OUTPUT
CMOS INPUT/
OUTPUT
OFF
AMP Reset  Set 'L' to reset AMP                              
Normal operation set 'H' 
P6_1
48
AMP_INT
INPUT
CMOS INPUT/
OUTPUT
OFF
AMP Interrupt
P0_3/AN4
49
PWM_IN
INPUT
CMOS INPUT/
OUTPUT
OFF
Reset  Audio setting when detect LVL_DETECT “L” 
during PWM_IN is “L”. 
P0_2/AN5
50
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P0_1/AN6
51
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P0_0/AN7
52
NO USE
OUTPUT
CMOS INPUT/
OUTPUT
OFF
Fix “L”
P3_7/SS0

HT-SB250
7 – 7
IC604  RH-IXA289AW00 : System Microcomputer ( IXA289AW ) ( 3/3 )
Figure 7-5 BLOCK DIAGRAM OF IC
NO U
S
E
NO U
S
E
NO U
S
E
PWM_IN
AM
P_
IN
T
AM
P_
R
E
S
ET
AM
P_
PWD
N
NO U
S
E
VR
EF
S
Y
S
_
P
ROT
E
CT
KEY_
1
AR
EA
NO U
S
E
52
51
50
49
48
47
46
45
44
4
3
42
41
40
P
3
_7/
SS
0
P
0_0/A
N
7
P
0_1/A
N
6
P
0_2/A
N
5
P0
_
3
/A
N4
P
6_1
P
6_2
P
6_0/TR
E
0
P4
_
2
/V
R
E
F
P0
_
4
/A
N
3
P0
_
5
/A
N
2
P0
_
6
/A
N
1
NC
NO USE
1
NC
NC 39
NO USE
SCL
2
P3_5/SCL/SSC
K
P0_7/AN0 38
LVL_DETECT
NO USE
3
P3_3/SSI
P6_3 37
NO USE
SDA
4
P3_4/SDA/SC
S
P6_4 36
KEY POWER
MODE
5
MODE
P6_5/CLK1 35
POWER (DC RELAY)
XCIN
6
P4_3/XCIN
P3_0/TRA0 34
NO USE
XCOUT
7
XCOUT
P3_1/TRB0 33
NO USE
RESET
8
RESET
P1_0/KI0/AN8
32
NO USE
XOUT
9
XOUT/P4_7
P1_1/KI1/AN9
31
NO USE
GND
10
VSS/AVSS
P1_2/KI2/AN10 30
SRS_WDC
XIN
11
P4_6/XIN
P6_7/INT3/RXD 29
SYS_STOP
VCC
12
VCC/AVCC
P6_6/INT2/TXD1 28
SRS_MUTE_B
NO USE
13
P2_7/TRDIOD
1
27
SRS_RSTB
P
2
_
6
/T
RDIO
C1
P2
_
5
/T
R
D
IO
B1
P2
_
4
/T
R
D
IO
A1
P2
_
3
/T
RDIO
D0
P
2
_
2
/T
RDIO
C0
P2
_
1
/T
R
D
IO
B0
P2
_
0
/T
R
D
IO
A0
/T
R
D
CL
K
P
1
_
7
/T
RA
I0
/I
NT
1
P
1
_6/C
LK
0
P
1
_5/R
X
D
0/(TR
A
I0)/ 
(I
N
T
)
P
1
_4/TX
D
0
P1
_
3
/K
I3
/A
N
1
1
NC
14
15
16
17
18
19
20
21
22
2
3
24
25
26
L
E
D_
CL
K
PWR_
L
E
D_
S
TB
Y
 2
NO U
S
E
L
E
D_
DIN
LE
D
_
S
TB
L
E
D_
DOUT
PWR_
L
E
D_
S
TB
Y
 1
RX
_
IN
NO U
S
E
NO U
S
E
NO U
S
E
NO U
S
E
NO U
S
E
P4_5/INT0
S
HARP
IXA289A

HT-SB250
7
 – 8
IC901 VHISTA333BW-1 : 2.1 Channels High Efficiency Digital Audio System ( STA333BW ) ( 1/2 )
Figure 7-6 BLOCK DIAGRAM OF IC
Figure 7-7 PIN CONFIGURATION OF IC
SA
SCL
SDI
LRCKI
BICKI
RESET
INT LINE
PWDN
XTI
PLL_FILTER
Processor
POWER
SDA
I2C
PLL
EQ, Tone,
Volumes...
Serial Data Input
Channel mapping
CONTROL
OUT1A
OUT1B
OUT2A
OUT2B
DDX3A
DDX3B
DDX4A/TWARNEXT
DDX4B/EAPD
CONFIG
STATUS
GND_SUB
Vdd_DIG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
SA
TEST MODE
GND_DIG
SCL
SDA
INT_LINE
RESET
SDI
LRCKI
BICKI
XTI
PLL_GND
PLL_FILTER
PLL_Vdd
POWRDN
GND_DIG
VDD_DIG
TWARN/OUT4B
EAPD/OUT4B
VSS
VCC_REG
OUT2B
OUT2A
OUT1B
GND2
GND1
OUT1A
GND_REG
CONFIG
OUT3B/DDX3B
OUT3A/DDX3A
Vdd
Vcc2
Vcc1

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