Panasonic SA-PT250GCP Service Manual page 86

SA-PT250GCP
1 2 3
SCHEMATIC DIAGRAM - 10
A
D
MIC CIRCUIT
:+B SIGNAL LINE
B
JK7002
7
6
L7001
J0JBC0000019
1
L7002
C J0JBC0000030
MIC 2
2
3
L7005
J0JBC0000030
4
L7003
J0JBC0000019
5
D
JK7001
7
6
L7101
J0JBC0000019
1
L7303
MIC 1
2
E
L7303
3 J0JBC0000019
4
L7202
J0JBC0000019
5
F
Q7100
B1GBCFJJ0051
MUTING
G
H
1 2 3
4 5 6
:MIC SIGNAL LINE
:-B SIGNAL LINE
C7012 R7010
1 1K
C7008 0.47
IC7000
C0ABBB000230
MIC AMP R7007 1K
C7007 0.1
1 +VCC 8
C7003 R7003
C7006 R7006
1 1K
R7001 220P 68K
2 7
680
3 6
R7005
1K
-VCC
4 5
C7122
C7120
1 0.1
-VCC
5 4
R7120
10K
6 3
7 2
+VCC
8 1
IC7200
C7121
C0ABBB000230
0.1
MIC AMP
R7116
680 IC7100
C1BB00001061
DIGITAL DELAY
WITH ECHO VOLUME
1 NC NC 16
C7111
C7112
C7103
10 0.1
1500P
2 LPFIN VCC 15
C7101 R7100
R7106
1 15K 120K
CLOCK
3 14
LPF1OUT
R7102 C7110 C7115
15K 10V47 10
4 OP1OUT REF 13
5 OP1IN OP2IN 12
R7105
15K
CC1 OP2OUT
6 11
R7104
15K
7 CC2 LPF2IN 10
C7105 C7106
0.22 0.22
8 GND LPF2OUT 9
R7109
C7113
4.7K 50V1
Q7101
B1GBCFJJ0051
SWITCH Q7102
B1GBCFJJ0051
SWITCH
4 5 6
7 8 9
H7000
1 ASP_MICIN
+7V
2
L7004
3
AGND
TO
J0JBC0000019
4 -7V
MAIN CIRCUIT
MIC_SW
5 (CN2013)
IN SCHEMATIC
6 ECHO LVL 1
DIAGRAM - 6
7 ECHO LVL 2
8 ECHO MUTE
9 CHASSIS GND
VR7001
EVUE27FK3B53
MIC VOLUME
3 2 1
W7006 R7107 W7007
0 68 0
D7100
B0BC5R000009
7 8 9
86
10 11 12
B
10 11 12
13 14
A
B
C
D
E
F
G
SA-PT250GCP MIC CIRCUIT
H
13 14