Schematic Diagram - Mic Board - Aiwa CX-BK7 Service Manual

7-28. SCHEMATIC DIAGRAM – MIC Board – •
Q207
DTC114EKA-
T146
Q206
DTC114EKA-
T146
C237
100
25V
C236
0.1
D203
UDZSTE17-5.1B
R225
2.2k
E1 R229 47k
E2 R230 47k
E3 R231 47k
C232 L201 R239
150p 1k
82µH
C230
150p
C229
0.1
C228
0.0033 C227
820p
C226
0.1
•
See page 88 for Waveform. See page 90 for IC Block Diagram.
R238
10k
R237
10k
Q205
DTC114EKA- R236
T146 10k
Q204
DTC114EKA-
T146 R235
10k
Q202-207
LEVEL SHIFT
Q203
DTC114EKA-
R234
T146
10k
Q202
DTC114EKA- R233
T146 10k
DIGITAL ECHO
IC402
BU9262
AFS
R223 C239
NC C-IN
4.7k 0.1
TEST1 MIC-IN
CLK VCC
LATCH LIN
C220
0.1 R240
DATA RIN
1M
CLKO C-OUT
CLKI LOUT
C223
47
NC O ROUT
10V
DS OUT VREF
TE MIC-OUT
C238 R224
INI VRIN C221
0.1 100k
0.1
IN2 OUT
C222
C224
OUT IN2 820p
0.0033
IN INI
OUT OUT
C225
0.1
GND IN
E3
E2
E1
R220
180
R221
180
C212
0.47 R214
50V
C211
820p
R213
33k
MIC AMP
5
7
6
C216
4 0.47 C208
IC201(2/2) 50V 1
NJM4565M(TE2) VR201 50V
10K
MIC LEVEL
R206
120k
C213
2.2
50V
R232 R212 R215 R210 C207
10k 2.2k 470 2.2k 220p
D202
1SS355TE-17
C210
22 R209 D201
50V 470 1SS355TE-17
C206
R211 R216 R207
220
2.2k 1k 1k
10V
65 65
E1
E3
E2
R208
100
10
C209
10
50V
R204
100 C204
8 3
0.22 R202
50V 4.7k
2
1
R205
IC201(1/2)
2.2k
NJM4565M(TE2)
S
Q201
2SK2158
MIC LEVEL AGC R217 C214
5.6k 470p
C205
R203 C203 R201
10
220k 4700p 10k
50V
CX-BK7
CN204
7P
CLK
DATA
MIC_ECHO
VM
MIC_DET
MIC-OUT
(Page 67)
MIC-A-GND
J201
MIC
C219
0.22
(CHASSIS)
FB201