Read Panasonic SA-XH175EE / SA-XH175GS / SC-XH175EE Service Manual online
112
17.7. Mic Circuit
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C
D
B
E
G
H
F
A
C
D
B
E
G
H
F
H
MIC CIRCUIT
SCHEMATIC DIAGRAM - 20
SA-XH175EE/GS MIC
CIRCUIT
A
TO
MAIN(MICON)
CIRCUIT (CN2009)
IN SCHEMATIC
DIAGRAM - 8
MAIN(MICON)
CIRCUIT (CN2009)
IN SCHEMATIC
DIAGRAM - 8
: +B SIGNAL LINE
: -B SIGNAL LINE
: MIC AUDIO INPUT SIGNAL LINE
NOTE: “ * ” REF IS FOR INDICATION ONLY
680
R7001
C7009
1500P
1500P
R7010
100
R7006
82K
0.1
C7018
1
C7012
R7008
100
C7027
100P
1
C7014
0
R7011
C7010
47P
C7003
1
R7003
0
R7005
1K
C7006
100P
C7005
47P
6
7
5
2
4
3
8
1
IC7000
C0ABBB000189
MIC AMP
R7015
1K
C7015
1
C7011
0.1
R7009
33K
J0JBC0000030
L7008
J0JBC0000019
R7107
22
Q7103
B1ABEB000002
+5V VOLTAGE REGULATOR
C7106
0.1
C7116
5600P
5600P
R7115
100K
Q7101
B1GBCFJJ0041
SWITCH
Q7100
B1GBCFJJ0041
SWITCH
R7112
15K
R7110
6.8K
Q7102
B1GBCFJJ0041
SWITCH
R7109
10K
C7113
1
R7103
10K
R7105
10K
C7107
3300P
3300P
R7101
10K
R7104
15K
R7102
10K
0.082
C7104
C7108
560P
0.082
C7109
C7121
0.1
C7103
560P
7
5
6
1
2
4
3
10
12
14
15
16
13
11
8
9
C1AB00002773
ECHO PROCESSOR
IC7100
R7118
8.2K
R7108
4.7K
C7117
1
R7117
12K
C7115
0.1
C7102
3900P
3900P
R7106
12K
D7100
B0BC5R1A0266
16V47
C7110
C7020
0.1
C7120
16V47
C7112
0.1
C7122
0.1
C7111
16V47
220
R7119
C7105
0.1
680
R7116
R7113
10K
R7100
15K
C7101
1
R7114
10K
R7004
680
C7007
0.1
C7004
0.015
0.1
C7019
C7026
100P
C7023
100P
C7022
100P
C7021
100P
J0JBC0000030
L7002
L7001
7
8
3
2
1
JK7002
MIC 2
MIC 1
L7004
J0JBC0000019
C7013
0.01
L7005
J0JBC0000019
J0JBC0000030
L7006
C7114
0.01
J0JBC0000019
L7007
7
8
3
2
1
JK7001
OP2IN
VCO
AGND
DGND
CLK_O
OP2OUT
OP1IN
CCO
OP1OUT
CC1
LPF2OUT
LPF2IN
VCC
LPFIN
VREF
LPF1OUT
V-
+9V
+9V
MIC_SW
MIC_SW
ECHO_LVL1
ECHO_MUTE
ECHO_LVL2
V+
R6212
R6211
R6210
R6209
R6208
J0JYC0000339
J0JYC0000339
J0JYC0000339
J0JYC0000339
J0JYC0000339
5
6
1
1
3
4
2
8
8
7
P6000
ADGND
+9V
MIC_SW
MIC_SW
ECHO_MUTE
ECHO_MUTE
ECHO_LVL1
ECHO_LVL1
ECHO_LVL2
ECHO_LVL2
MIC_IN
-9V
C6400
0.01
RL6004*
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