Toshiba SD-270EKB2 Service Manual - Page 20

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Toshiba SD-270EKB2 Service Manual
A
Main Board Electric Diagram for SD-270: Audio Input_Outp
Max. amplitude of Mic_Audio signal is 4Vrms
MIC_IN
R107
NM
[1K]
Q19
R105
[NM]9012H
NM
DSPVCC33
[150R]
R106
NM
[NM]
R108
MIC_ON
EC30
NM
R57
NM
[4.7K]
MIC_VOCAL
NM
[0R]
[10uF/16V]
1
VA
R51
NM
LRIN
[3.3K]
R58
NM
Mic vocal detected by ADP software
[3.3K]
Mic signal mute/mix/echo process by ADP
ADP: Audio Digital Process
Value in [] is for external ADC.
NM
VA
FB10
500Z
DSPVCC33
DSPVCC33
ADC circuit for Karaoke
C85
R101
NM
NM
[4.7R]
R102
R100
[0.1uF]
NM
NM
[4.7K]
[4.7K]
U13
16
1
M1
M0
15
2
FILT+
MCLK
14
3
REF_GND
VL
13
4
R104
VA
SDOUT
LRIN
12
5
AINR
GND
11
6
VQ
VD
ABCLK
10
7
AINL
SCLK
DAC_RST#
ALRCLK
9
8
DAC_RST#
/RST
LRCK
NM
C84
[CS5340]
NM
[0.1uF]
C86
C87
C89
C90
NM
NM
NM
NM
[0.1uF]
[1uF]
C88
[1uF]
[0.1uF]
Full scale input: 0.65Vrms (when VA=3.3V)
NM
M0=1, M1=1: clock slave;
[2200pF]
Package: TSSOP16.
2
External MicroPhone detection
R114
NM
[2K]
R113
EC32
NM
R116
D15
NM
NM
[1N4148]
NM
[1M]
[10uF/16V]
[2K]
R112
EC34
NM
NM
+
MIC_IN
[15K]
[10uF/16V]
D16
R115
NM
EC33
NM
Q21
[1N4148]
NM
[10K]
NM
[22uF/16V]
[BT3094]
MUTE1 and MUTE2:
Should configurate the DZFB bit
to enable High when Zero
detected.
3
U9
A5V
AMCLK
1
16
MUTE1
AMCLK
MCLK
DZFL
ABCLK
2
15
MUTE2
ABCLK
BICK
DZFR
AOUT0
3
14
AOUT0
SDTI
VDD
ALRCLK
4
13
ALRCLK
LRCK
VSS
DAC_RST#
APWM_L+
DAC_RST#
5
12
PDN
AOUTL+
ML
APWM_L-
C71
ML
6
11
CSN
AOUTL-
I2C_CLK
7
10
APWM_R+
0.1uF
I2C_CLK
CCLK
AOUTR+
I2C_DAT
8
9
APWM_R-
[NM]
I2C_DAT
CDTI
AOUTR-
AK4385
[NM]
Value in [] is for 2 channel external DAC.
CN9
MIC_IN
1
2
-12V
3
D5V
4
4PIN*2.0
4
A
4-5
B
MIC
R109
Q20
NM
-12V
NM
[BT3904]
[4.7K]
R110
NM
[100K]
MUTE_BIAS1
R111
NM
[100K]
APWM_L-
DSPVCC33
APWM_L+
+ EC31
C83
NM
NM
[0.1uF]
[10uF/16V]
R103
NM
[10K]
AMCLK
AMCLK
NM
AIN
AIN
APWM_R-
[33R]
APWM_R+
D5V
R117
NM
[4.7K]
VOCAL_DET
VOCAL_DET
Q22
NM
R130
[BT3094]
NM
[6.8K]
D5V
D2
LL4148
Q13
9012H
EC35
470uF/16V
R127
10K
DSPVCC33
R129 33R
D3
LL4148
+ EC15
Q15
9012H
47uF/16V
R128 10K
[NM]
MUTE_CTL
MUTE_CTL
MUTE_CTL
Low:
Mute.
+12V
Q14
9012H
R126
100R
R125
D4
47K
R124
LL4148
220R
D5
<Implementation>
LL4148
D6
LL4148
EC36
47uF/25V
D5V
Q12
9012H
R118
1K
MUTE1
-12V
D5V
Q11
9012H
R119
1K
MUTE2
B
C
[Value] for internal DAC
R152
5.1K 1%
[NM]
R154
NM
[120K 1%]
R155
NM
[120K 1%]
R156
NM
R133
R135
[120K 1%]
R134
C97
680pF
0R
4.7K 1%
470 1%
[33pF]
[4.7K 1%]
[4.7K 1%]
[4.7K 1%]
C93
C91
3300pF
NM
[180pF]
U14B
[200pF]
6
R136
R138
7
R137
5
0R
4.7K 1%
470 1%
[4.7K 1%]
[4.7K 1%]
[4.75K 1%]
NJM4560 OPA
C95
R149
R150
R151
R147
680pF
NM
NM
NM
5.1K 1%
[33pF]
[120K 1%]
[120K 1%]
[120K 1%]
[NM]
R153
5.1K 1%
[NM
R157
NM
[120K 1%]
R158
NM
[120K 1%]
R159
NM
R139
R141
[120K 1%]
R140
C98
680pF
0R
4.7K 1%
470 1%
[33pF]
[4.7K 1%]
[4.7K 1%]
[4.7K 1%]
C94
C92
3300pF
NM
[180pF]
U14A
[200pF]
2
R142
R144
1
R143
3
0R
4.7K 1%
470 1%
[4.7K 1%]
[4.7K 1%]
[4.7K 1%]
NJM4560 OPA
C96
R160
R161
R162
R148
680pF
NM
NM
NM
5.1K 1%
[33pF]
[120K 1%]
[120K 1%]
[120K 1%]
[NM]
C100
C1
C101
D1
C102
D1
C103
D1
C104
D2
C175
E1
C176
E2
C71
A3
C83
A1
C84
A2
C85
A1
C86
A2
C87
A2
C88
A2
C89
A2
C90
A2
C91
C1
C92
C2
C93
C1
C94
C2
C95
C1
C96
C2
C97
C1
C98
C1
C99
C1
CN9
A3
D15
A2
D16
A2
D2
B3
MUTE
D3
B3
D4
B3
D5
B3
D6
B3
EC15
A3
EC25
D1
EC26
D1
EC27
D1
MUTE_L
EC28
D2
EC30
A1
R120
R121
100K
100K
EC31
B1
EC32
A2
EC33
A2
MUTE_R
EC34
A2
R123
R122
EC35
B3
100K
100K
EC36
B3
-12V
FB10
A1
Q11
B4
Q12
B4
Q13
B3
Q14
B3
C
4-5
D
-12VA
R176
33R
-12V
EC26
47uF/25V
+12VA
R175
33R
+12V
+
EC25
47uF/25V
C101 NM
[100pF]
-12VA
R167
0R
[18K]
C103
C100
0.1uF
0.1uF
R163
U15A
0R
EC27
2
[39K]
1
3
22uF
R165 NM
AUDIO_MIX_L
MIC
NJM4558 OPA
+12VA
[4.7K]
C99
0.1uF
C102 NM
[100pF]
R168
0R
[18K]
R164
U15B
0R
EC28
6
[39K]
7
5
22uF
R166 NM
AUDIO_MIX_R
MIC
NJM4558 OPA
[4.7K]
+12VA
C104
0.1uF
Q15
B3
R147
C1
Q17
E1
R148
C2
Q18
E2
R149
C1
Q19
A1
R150
C1
Q20
B1
R151
C1
Q21
A2
R152
C1
Q22
A2
R153
C1
R100
A1
R154
C1
R101
A1
R155
C1
R102
A1
R156
C1
R103
A1
R157
C1
R104
A1
R158
C1
R105
A1
R159
C1
R106
A1
R160
C2
R107
A1
R161
C2
R108
A1
R162
C2
R109
A1
R163
D1
R110
B1
R164
D2
R111
B1
R165
D1
R112
A2
R166
D2
R113
A2
R167
D1
R114
A2
R168
D1
R115
A2
R169
D1
R116
A2
R170
D2
R117
A2
R171
D1
R118
B4
R172
D2
R119
B4
E1
R173
R120
B4
R174
E2
R121
B4
R175
D1
R122
B4
R176
D1
R123
B4
R51
A1
R124
B3
R57
A1
R125
B3
R58
A1
R126
B3
U13
A1
R127
B3
U14A
C2
R128
B3
U14B
C1
R129
B3
U15A
D1
R130
A2
U15B
D2
R133
B1
U9
A3
R134
C1
R135
C1
R136
B1
R137
C1
R138
C1
R139
B1
R140
C1
R141
C1
R142
B2
R143
C2
R144
C2
D
E
1
-12VA
R169
470
LMAIN-OUT
LMAIN-OUT
[1K]
R173
C175
MUTE_L
Q17
R171
100pF
BT3904
NM
470R[2K for external]
R170
470
RMAIN-OUT
RMAIN-OUT
[1K]
R174
MUTE_R
Q18
C176
R172
100pF
BT3904
NM
470R[2K for external]
2
3
4
E