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1
2
3
4
5
6
7
8
KP?
KEYPAD-A
SW1
1 2 3
5 6
7 8 9
0
ST
M1
A
MIC CORD
A
A
B
4
M2
R10
1K2
C8
0.1U
R4
22K
C
MR
M3
E
F1
D
* #
M4
RD
SAVE
R11
9K1
C4
0.022U
YELLOW
IC1
W91434
RX
F2
1
2
3
4
5
6
7
8
9
18
BLACK
17
16
15
TX
14
F3
13
R13
47K
R3
47K
BLUE
11
B
R9
220K
LOCK
B
10
C9
0.1u
F4
Y1
SW4
2
D2
LL4148
WHITE
3.579MHZ
2
UP
DOWN
C5
22P
C6
22P
F5
R6
75k
2SC1623
2SC1623
SW2
SW3
GND
R12
47K
Q2
D1
Q3
F6
R8
1K8
LL4148
RED
BT1
R5
1K
(3v)
VR1
5K
R2
10K
ZD1
5V1
C
C1
0.047U
C
LED1
Q4
2SC1623
R1
10K
R17
120K
R16
2.2K
R*
R14
68K
R15
150K
C7
0.1U
C3
10U
1K
2
R7
MIC1
D3
1N4148
2
C10
4u7
C2
10U
Q1
2SC1623
10K
TELINSTRUMENT CO,LTD.
D
D
Title
EM200 DTMF MICROPHONE
Size
Document Number
Rev
A
EM200-MK.2
Date:
Wednesday, January 07, 1998
Sheet of
0
0
1
2
3
4
5
6
7
8
12
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