Sharp SD-AT50H (serv.man18) Service Manual ▷ View online
– 41 –
SD-AT50H
VOLTAGE
PIN
NO.
NO.
VOLTAGE
1
5 V
0~5 V
0~5 V
0 V
0~5 V
0~5 V
5 V
5 V
0.4~0.46 V
10
0~5 V
11
0 V
12
0~5 V
13
0 V
14
—
15
—
16
0 V
17
2.5 V
18
2.5 V
19
2.5 V
20
2.5 V
21
5 V
22
—
23
—
24
5 V
ICA100
9
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
2.5 V
0 V
1.2 V
0.6 V
2.5 V
0 V
0 V
2.3 V
2.3 V
10
2.2 V
11
2.2 V
12
2.5 V
13
0 V
14
2.2 V
15
2.2 V
16
2.2 V
17
2.3 V
18
2.4 V
19
2.4 V
20
2.4 V
21
2.2 V
22
0 V
23
2.5 V
24
0 V
IC101
9
8
7
6
5
4
3
2
25
1.5 V
1.6 V
0 V
1.5 V
1.6 V
1.6 V
0.1 V
1.1 V
1.1 V
34
2.5 V
35
0 V
36
1 V
37
2.4 V
38
2.4 V
39
1.3 V
40
1.6 V
41
1.7 V
42
1.6 V
43
1.6 V
44
1.6 V
33
32
31
30
29
28
27
26
PIN
NO.
NO.
VOLTAGE
1
3.5 V
0.4 V
4.9 V
0 V
3.4 V
4.9 V
1.6 V
1.7 V
1.6 V
10
0.7 V
11
0.9 V
12
0.9 V
13
1 V
14
3.4 V
15
3.4 V
16
0 V
17
2.8 V
18
2.8 V
19
0 V
20
0 V
21
0 V
22
5 V
23
5 V
24
2.4 V
IC102
9
8
7
6
5
4
3
2
25
0 V
2.5 V
2.5 V
2.5 V
2.5 V
2.5 V
2.5 V
0.8 V
0.8 V
34
4.9 V
35
1.2 V
36
0 V
37
2.4 V
38
0 V
39
2.4 V
40
0 V
41
4 V
42
3.2 V
43
2.4 V
44
3.3 V
33
32
31
30
29
28
27
26
PIN
NO.
NO.
VOLTAGE
1
5 V
0 V
0 V
0.05 V
0 V
3 V
3.1 V
3 V
2.8 V
10
0 V
11
1.5 V
12
1.5 V
13
0 V
14
3.1 V
15
0 V
16
3.1 V
17
0 V
18
3.1 V
19
3.1 V
20
3.1 V
21
0 V
22
1.5 V
23
1.7 V
24
1.5 V
IC701
9
8
7
6
5
4
3
2
25
1.7 V
3 V
2.9 V
3.1 V
3.7 V
0 V
0 V
0.1 V
32
31
30
29
28
27
26
PIN
NO.
NO.
VOLTAGE
1
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
10
0 V
11
0 V
12
0 V
13
0 V
14
0 V
15
0 V
16
0 V
17
0 V
18
0 V
19
0 V
20
0 V
21
0 V
22
0 V
23
0 V
24
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
IC501
9
8
7
6
5
4
3
2
25
34
35
36
37
38
39
40
33
32
31
30
29
28
27
26
PIN
NO.
NO.
VOLTAGE
41
0 V
0 V
0 V
0 V
0.1 V
0 V
0 V
2.4 V
0 V
50
-6.7 V
51
0 V
52
6.8 V
53
0 V
54
0 V
55
0 V
56
0 V
57
0 V
58
0 V
59
0 V
60
0 V
61
0 V
62
0 V
63
0 V
64
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
49
48
47
46
45
44
43
42
65
74
75
76
77
78
79
80
73
72
71
70
69
68
67
66
PIN
NO.
NO.
VOLTAGE
1
-14.5 V
—
—
14.8 V
-8~20 V
0~5 V
0~5 V
5 V
-8 V
10
-14.5 V
11
0 V
12
0~5 V
13
0~5 V
14
-8~20 V
15
14.8 V
16
—
17
-13.8~14.2 V
18
-14.5 V
ICA102
9
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
5 V
0~5 V
0~5 V
5 V
0~5 V
0~5 V
0 V
0~5 V
0~5 V
10
5 V
11
0~5 V
12
0~5 V
13
5 V
ICA101
14
5 V
9
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
1 V
1.9 V
0 V
0 V
3.3 V
1.7 V
1.7 V
3.3 V
IC103
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
0.1 V
0 V
0 V
-12.9 V
0 V
0 V
0 V
11.8 V
IC505
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
2.6 V
2.6 V
0 V
0 V
5 V
2.6 V
2.6 V
5 V
IC109
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
0 V
0 V
0 V
12 V
0 V
0 V
0 V
-12.1 V
IC811
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
0 V
0 V
0 V
12 V
0 V
0 V
0 V
-12.1 V
IC812
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
0 V
0 V
0 V
12 V
0 V
0 V
0 V
-12.1 V
IC813
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
0.7 V
0 V
0 V
3 V
3 V
IC302
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
2.8 V
6.8 V
0 V
5 V
0 V
IC507
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
2.5 V
2.3 V
0 V
0 V
2.9 V
2.5 V
0 V
0 V
0 V
10
0.7 V
11
2.8 V
12
3.2 V
13
2.5 V
14
3.3 V
IC104
9
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
0 V
0 V
0 V
12.5 V
0 V
1.5 V
-12.5 V
-12.5 V
1.5 V
10
0 V
11
-13.6 V
12
0 V
13
0 V
14
0 V
IC514
9
8
7
6
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
8.9 V
0 V
5 V
IC110
3
2
PIN
NO.
NO.
VOLTAGE
1
5 V
0 V
3.3 V
IC112
3
2
PIN
NO.
NO.
VOLTAGE
1
5 V
0 V
2.5 V
IC111
3
2
PIN
NO.
NO.
VOLTAGE
1
14.3 V
0 V
9 V
IC513
3
2
PIN
NO.
NO.
VOLTAGE
1
0.5 V
0 V
127 V
18.9 V
2.7 V
IC901
5
4
3
2
PIN
NO.
NO.
VOLTAGE
1
6.9 V
10.2 V
0 V
IC911
3
2
PIN
NO.
NO.
VOLTAGE
1
14.8 V
0 V
12 V
IC912
3
2
PIN
NO.
NO.
VOLTAGE
1
0 V
7.2 V
3.7 V
IC913
3
2
PIN
NO.
NO.
VOLTAGE
1
-1.5 V
-13.8 V
-8 V
ICA400
3
2
PIN
NO.
NO.
VOLTAGE
1
10.5 V
0 V
5 V
ICA401
3
2
PIN
NO.
NO.
VOLTAGE
1
12.4 V
0 V
5 V
ICA402
3
2
PIN
NO.
NO.
VOLTAGE
1
3.1 V
3.1 V
0 V
IC702
3
2
PIN
NO.
NO.
VOLTAGE
1
1.2 V
2.6 V
2 V
2.9 V
2.9 V
2.9 V
2.9 V
0 V
0.5 V
10
2.9 V
11
0 V
12
2 V
13
1.4 V
14
0 V
15
1.5 V
16
3 V
17
3 V
18
3 V
19
2.1 V
20
2.1 V
21
0 V
22
0 V
23
3 V
24
0 V
0.1 V
0 V
0 V
0 V
2.8 V
2.8 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
2.9 V
0 V
0 V
0 V
0 V
0 V
0 V
3.4 V
0 V
0 V
2.9 V
0 V
IC301
9
8
7
6
5
4
3
2
25
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
33
32
31
30
29
28
27
26
PIN
NO.
NO.
VOLTAGE
51
0 V
0 V
2.9 V
2.8 V
0 V
0 V
0 V
0 V
0 V
60
0 V
61
3 V
62
3 V
63
0 V
64
0 V
65
0 V
66
3 V
67
0 V
68
0 V
69
0 V
70
0 V
71
3 V
72
0 V
73
3.4 V
74
3.3 V
0 V
0 V
0 V
0 V
2.9 V
0 V
0 V
2.7 V
3 V
0 V
3.1 V
0 V
0 V
0 V
0.6 V
0.8 V
3 V
0 V
0.8 V
3 V
2.8 V
0 V
2.5 V
3 V
3 V
0 V
59
58
57
56
55
54
53
52
75
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
83
82
81
80
79
78
77
76
SD-AT50H
– 42 –
•
Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
notice.
•
The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
sis with no signal given.
•
Parts marked with “
1
” ( ) 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.
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•
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.
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
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
REF. NO
DESCRIPTION
POSITION
SW1
POWER
ON—OFF
SW2
VOLUME UP
ON—OFF
SW3
VOLUME DOWN
ON—OFF
SW4
DIGITAL/ANALOG
ON—OFF
SW5
FUNCTION
ON—OFF
TYPES OF TRANSISTOR AND LED
KTA1504 GR
KTC3875 GR
KRA106 S
KRC102 S
KRC104 S
KRC107 S
KTC3875 GR
KRA106 S
KRC102 S
KRC104 S
KRC107 S
DS1SS133
D1NL20U
D1NL20U
B
(3)
E
(1)
C
(2)
TOP
VIEW
KDS120E
KDS121E
KDS226
KDS121E
KDS226
TOP VIEW
TOP VIEW
TOP VIEW
2SD1616 A
2SK246 GR
KTA1266 GR
KTA1271 Y
KTA1273 Y
KTC2874 B
KTC3199 GR
KTC3203 Y
2SK246 GR
KTA1266 GR
KTA1271 Y
KTA1273 Y
KTC2874 B
KTC3199 GR
KTC3203 Y
VIEW
FRONT
E C B
(S)(G)(D)
(1)(2)(3)
1N4004S
KDS160
SFPW56
KDS160
SFPW56
D5SB60
A C
A C
VIEW
FRONT
FRONT
VIEW
VIEW
3105T1
3105VGT
31URT21
SEL2E10C
SELU2E10
3105VGT
31URT21
SEL2E10C
SELU2E10
KTC3205 Y
KRA106 M
KRA107 M
KRC102 M
KRC104 M
KRC106 M
KRC107 M
KRA106 M
KRA107 M
KRC102 M
KRC104 M
KRC106 M
KRC107 M
– 43 –
SD-AT50H
WAVEFORMS OF 1-BIT CIRCUIT
T
2
1
2.00V/div
500 ns/div
194.545465
µ
s
520 mV
2.00V/div
AD IC Output
+ Side
- Side
5 V
Amplitude
from 0 to 5 V
from 0 to 5 V
1
2
2
T
10.0 V/div
500 ns/div
194.545465
µ
s
-12.3 V
10.0 V/div
+ SIDE
+ FETOUT
- SIDE
Waveforms before low-pass filters at both
ends of the speaker.
H-bridge may be considered as BTL.
However, here and at the gate drive, dead
time is not observed; since bootstrap
operates based on output, DEAD TIME
part is in floating condition. The waveform
on the HIGH side shows that only the
booted voltage lowers.
ends of the speaker.
H-bridge may be considered as BTL.
However, here and at the gate drive, dead
time is not observed; since bootstrap
operates based on output, DEAD TIME
part is in floating condition. The waveform
on the HIGH side shows that only the
booted voltage lowers.
2
1
11
12
12
2
1
2.00 V/div
500 ns/div
194.545465
µ
s
-12.30 V
2.00 V/div
AD IC NF IN
In partial pressure OUT, 4 to 7 V amplitude
of GND reference is observed.
In IC of 75 kohms, the reference is 2.5 V
because of VREF. Due to imaginary GND
of operational amplifier inside IC, the
waveform cannot be monitored.
This waveform is partial pressure OUT.
of GND reference is observed.
In IC of 75 kohms, the reference is 2.5 V
because of VREF. Due to imaginary GND
of operational amplifier inside IC, the
waveform cannot be monitored.
This waveform is partial pressure OUT.
3
4
T
2.00 V/div
50.0 ns/div
0.0 s
-12.30 V
2.00 V/div
LEVEL SHIFT OUT
DEAD TIME
ZOOM UP
Dead time is generated by level
shift input.
Leading edge is delayed at CR,
passing R at DI.
Set value: 20 - 25 nsec.
shift input.
Leading edge is delayed at CR,
passing R at DI.
Set value: 20 - 25 nsec.
5
6
6
SD-AT50H
– 44 –
FUNCTION TABLE OF IC
IC101 VHiCS493264-1: DSP (CS493264) (1/3)
1
VD1
Input
Digital positive supplies. Norminally + 2.5 V.
2
DGND1
—
Digital ground.
3
AUDATA3, XMT958
Output
CMOS level output that contains a biphase-mark encoded (S/PDIF) or I
2
S or Left
Justified digital audio data which is capable of carrying two channels of PCM
digital audio or an IEC61937 compressed-data interface.
Note: Outputting of IEC61937 is only available for certain broadcast-based
digital audio or an IEC61937 compressed-data interface.
Note: Outputting of IEC61937 is only available for certain broadcast-based
application codes which run on the CS4931X family or CS49330 device.
This output typically connects to the input of an RS-422 transmitter or to the
input of an optical transmitter.
input of an optical transmitter.
4
WR, DS, EMWR, GPIO10
Input
In Intel parallel host mode, this pin serves as the active-low data-write-input
strobe. In Motorola parallel host mode, this pin serves as the active-low data-
strobe-input signal. In serial host mode, this pin can serve as the external-
memory active-low write-enable output signal. Also in serial host mode, this pin
can serve as a general purpose input or output bit.
strobe. In Motorola parallel host mode, this pin serves as the active-low data-
strobe-input signal. In serial host mode, this pin can serve as the external-
memory active-low write-enable output signal. Also in serial host mode, this pin
can serve as a general purpose input or output bit.
5
RD, R/W, EMOE, GPIO11
Input
In Intel parallel host mode, this pin serves as the active-low data bus enable
input. In Motorola parallel host mode, this pin serves as the read-high/write-low
control input signal. In serial host mode, this pin can serve as the external
memory active-low data-enable output signal. Also in serial host mode, this pin
can serve as a general purpose input or output bit.
input. In Motorola parallel host mode, this pin serves as the read-high/write-low
control input signal. In serial host mode, this pin can serve as the external
memory active-low data-enable output signal. Also in serial host mode, this pin
can serve as a general purpose input or output bit.
6
A1, SCDIN
Input
In parallel host mode, this pin serves as one of two address input pins used to
select one of four parallel registers. In SPI serial host mode, this pin serves as
the data input.
select one of four parallel registers. In SPI serial host mode, this pin serves as
the data input.
7
A0, SCCLK
Input
In parallel host mode, this pin serves as one of two address input pins used to
select one four parallel registers. In serial host mode, this pin serves as the serial
control clock signal, specifically as the SPI clock input or the I
select one four parallel registers. In serial host mode, this pin serves as the serial
control clock signal, specifically as the SPI clock input or the I
2
C clock input.
8-11
DATA7, EMAD7, GPIO7-
Input
In parallel host mode, these pins provide a bidirectional data bus.
DATA4, EMAD4, GPIO4
If a serial host mode is selected, these pins can provide a multiplexed address
and data bus for connecting an 8-bit external memory. Otherwise, in serial host
mode, these pins can act as general-purpose input or output pins that can be
individually configured and controlled by the DSP.
and data bus for connecting an 8-bit external memory. Otherwise, in serial host
mode, these pins can act as general-purpose input or output pins that can be
individually configured and controlled by the DSP.
12
VD2
Input
Digital positive supplies. Norminally + 2.5 V.
13
DGND2
—
Digital ground.
14-17
DATA3, EMAD3, GPIO3-
Input
In parallel host mode, these pins provide a bidirectional data bus.
DATA0, EMAD0, GPIO0
If a serial host mode is selected, these pins can provide a multiplexed address
and data bus for connecting an 8-bit external memory. Otherwise, in serial host
mode, these pins can act as general-purpose input or output pins that can be
individually configured and controlled by the DSP.
and data bus for connecting an 8-bit external memory. Otherwise, in serial host
mode, these pins can act as general-purpose input or output pins that can be
individually configured and controlled by the DSP.
18
CS
Input
In parallel host mode, this pin serves as the active-low chip-select input signal.
In serial host SPI mode, this pin is used as the active-low chip-select input signal.
In serial host SPI mode, this pin is used as the active-low chip-select input signal.
19
SCDIO, SCDOUT, PSEL, GPIO9
Input
In I
2
C mode, this pin serves as the open-drain bidirectional data pin. In SPI mode
this pin serves as the data output pin. In parallel host mode, this pin is sampled
at the rising edge of RESET to configure the parallel host mode as an Intel type
bus or as a Motorola type bus. In parallel host mode, after the bus mode has
been selected, the pin can function as a general-purpose input or output pin.
In I
at the rising edge of RESET to configure the parallel host mode as an Intel type
bus or as a Motorola type bus. In parallel host mode, after the bus mode has
been selected, the pin can function as a general-purpose input or output pin.
In I
2
C mode this pin is an OPEN DRAIN I/O and requires a 4.7 k Pull-Up.
20
INTREQ, ABOOT
—
Open-drain interrupt-request output. This pin is driven low to indicate that the
DSP has outgoing control data and should be serviced by the host. Also in serial
host mode, this signal initiates an automatic boot cycle from external memory if it
is held low through the rising edge of reset.
OPEN DRAIN I/O - Requires 4.7 kohms Pull-Up.
DSP has outgoing control data and should be serviced by the host. Also in serial
host mode, this signal initiates an automatic boot cycle from external memory if it
is held low through the rising edge of reset.
OPEN DRAIN I/O - Requires 4.7 kohms Pull-Up.
21
EXTMEM, GPIO8
Input
In serial control port mode, this pin can serve as an output to provide the chip-
select for an external byte-wide ROM. In parallel and serial host mode, this pin
can also function as a general-purpose input or output pin.
select for an external byte-wide ROM. In parallel and serial host mode, this pin
can also function as a general-purpose input or output pin.
22
SDATAN1
Input
Digital-audio data input that can accept from one to six channels of compressed
or PCM data. SDATAN1 can be sampled with either edge of SCLKN1, depending
on how SCLKN1 has been configured.
or PCM data. SDATAN1 can be sampled with either edge of SCLKN1, depending
on how SCLKN1 has been configured.
23
VD3
Input
Digital positive supplies. Norminally + 2.5 V.
24
DGND3
—
Digital ground.
Pin No.
Function
Terminal Name
Input/Output
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