C) Panel Circuit & (D) Tact Switch Circuit - Panasonic SA-VK31GC Service Manual

SA-VK31GC / SA-VK31GS
18.4. (C) Panel Circuit & (D) Tact Switch Circuit
SCHEMATIC DIAGRAM - 10
C671
0.022
JK600
4
5
2
3
MIC1
6
7
1
JK900
4
5
2
MIC2
3
6
7
1
1
7
C621
6
0.022
HEADPHONE 3
2
5
4
JK601
PANEL CIRCUIT
C672
0.01
L605
Q900
J0JKB0000020
2SC1740SSTA
LIMITER
L608
G0C100JA0030
R970
C918
C919
680
50V3.3
470P
R972 C669
560
0.01
R939 C916
50V4.7
4.7K
R969
680
L607
J0JKB0000020
TACT SWITCH CIRCUIT
R905
R904 R903 R902
2.2K 1.8K 1K
1.2K
R907 R908
R906 R909 R910
2.7K 4.7K 6.8K 10K
3
2
1
VR600
EVEKE2F3524M
JOG VOL
C625 0.01
L604
RLQZP100KT-Y
C619
0.047
C620
0.022 L603
RLQZP101KT-Y
L602
RLQZP101KT-Y
L609
RLQZP101KT-Y
: MIC SIGNAL LINE
: +B SIGNAL LINE : MAIN SIGNAL LINE
R684
R690
330K 8.2K
R937
2.2K
C663
Q900
50V1
C670
Q607
50V0.33
R938
470K
C662
C917
0.047
C664
R683
1000P
1000P
68
Q607
2SC1740SSTA
MIC AMP
R928
22K
R929 R940
22K
8.2K
C910
0.015
R971
10K
R990 R936
D906
39 39
B0BA5R000004
C913
0.01
R935
82K
R901
CN900
1K
MICSW_1
8
K2_1
7
6
22K
5
R900
VJOG_B
10K 4
VREF+
3
VJOG_A
2
R912
47K 1
CP900
C901
100P
R913
47K
C902
100P
L611
J0JKB0000020
L612
J0JKB0000020
62
Q606
KTC3199GRTA
MIC AMP R694
3.3K
C666 C667
R682
1000P
10V100
330K
C665 R696
Q606
100P 8.2K
R697
4.7K
VR602
EVUF2AF25B14
C920 C903
50V1 50V1
R927
R926
100 R930
100
15K
9 MIX IN MIX OUT 8
ADLPF IN
10
7
DALPF OUT
R931
C911 C904
3300P 4.7K
4700P
ADLPF OUT
11 6
DALPF IN
R932
10K
ADINT IN
12 5
DAINT OUT
C912 C907
0.033 0.033
ADINT OUT
13 4
DAINT OUT
C908
16V22
14 VCC BIAS 3
IC900
15 MUTE ECHO VR 2
C909
0.01
16 CR CR 1
R941
C914
18K
150P
R934 IC900
R933
22K
C1BB00000716 1K
ECHO IC
MICSW
8
K2
7
6
5
VJOG_B
4
VREF+
3
VJOG_A
2
1
MICSW
+9.0V
MIC
C906
0.015
C905
50V0.47
ECHO_LVL
MUTE_E
+9.0V
MICSW
K2
VJOG_B
VREF+
VJOG_A
C627
0.1
DVREF+
HPR
HPL
HP_SW