echomax _2000_schematic.pdf

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em2000_43900-00-00_schematic.pdf
8
7
6
5
4
3
2
1
D20
D21
D22
R45
MIC GAIN
VCC
1
2
1
2
1
2
Q6
V9
V9
3
R4
15C10K
1
C7
1N4148
1N4148
1N4148
160
R15
VCC/2
VCC
R46
2N3906 D11
D12
1
2
1
2
R42
33
R6
1K
2
R3
4.75K
0.0027uF
C12
D13
LED
13.7K
100K
1N4148
1N4148
R11
100K
GND
C8
100uF
16V
R5
100
R10
5.23K
TL064
Q5
2N3904
POWER/
BATTERY
GND
U3A
C6
100pF
U3D
R37
100K
C25
100pF
U3B
150K
6
R44
C9
R12
R13
R14
D10
VCC/2
2
7
9
U3C
13
2
1
R67
1K
C34
1uF
U6
1
5
8
14
1
8
0.0027uF
VOUT
VIN
3
10
12
2
7
3.40K
9.76K
C10
0.033uF
43.2K
1N4148
0.22uF
SENSE
FB
D15
1N4148
TL064
R68
10K
C21
3
6
+
+
SHUTDOWN
5V
R7
2.21K
TL064
C11
0.022uF
TL064
4
5
+
GND
ERROR*
V9
R9
30.1K
VCC/2
+
C20
22uF
16V
ELECT
R8
10.0K
VCC/2
4.7uF
TANT
LP2951
GND
GND
GND
R38
100K
C22
0.1uF
D
"CROWBAR"
R43
88.7K
D
JP1
C5
VCC/2
C32
0.1uF
GND
GND
1
2
GND
GND
0.1 uF
CART
GND
GND
Q7
BATTERY
BT1
2N3906
R55
3.9K
R36
VCC
GND
3.9K
R69
47K
SW1
1
3
C23
0.1uF
2
5
4
6
VCC
VCC
GND
GND
C31
R70
33
8
7
9
0.1uF
U2
U8
C4
D4
1
18
D3
D0
3
2
ETS ON/OFF
D23
D5
2
P24
P23
17
D2
R2
4.7K
D1
4
D1
Q1
5
C
P25
P22
D2
Q2
C
4053B
D6
3
16
D1
D2
7
6
R58
10
12
P26
P21
D3
Q3
D7
4
15
D0
VCC
D3
D4
8
9
GND
1
2
3
4
5
6
7
8
9
10
11
18pF
U9
SW4
P27
P20
D4
Q4
10 pF
5
14
13
12
10
11
D0
D0
C2
VCC
GND
D5
Q5
A0
D0
X1
C2
D5
D1
D1
6
13
14
15
9
12
GND
XT2
P02
D6
Q6
A1
D1
U5A
7
12
C1
D6
17
16
8
13
D2
D2
SW 4PDT
XT1
P01
D7
Q7
A2
D2
GND
C3
8
11
C0
GND
D7
18
19
7
15
D3
D3
3.57K
1N4148
P31
P00
D8
Q8
A3
D3
R59
14
9
10
6
16
D4
D4
SW DPST
18pF
12MHz
P32
P33
A4
D4
D5
D5
11
5
17
SW2
CLK
A5
D5
1
4
18
D6
D6
CLOSED = OFF
1
3
Z86E08
CLR
A6
D6
C1
100pF
3
19
D7
D7
2
A7
D7
25
GND
74HC273
U4A
VCC
A8
1
2
U7
24
A9
D0
D1
3
2
21
2
R2R
D1
Q1
A10
D2
4
5
23
1
U1
1N4148
D2
Q2
A11
GND
C0
1
15
1
2
D2
7
6
2
3
4
6
A
Y0
D3
Q3
A12
SMPL*
C1
D3
2
14
8
9
5
VCC
B
Y1
D4
Q4
C2
3
13
D4
D5
D6
13
12
20
D1
1N4148
VCC/2
TL064
C
Y2
D5
Q5
CS1
VCC
12
14
15
26
V9
Y3
D6
Q6
CS2
VCC
11
17
16
P1
27
Y4
D7
Q7
WE
D7
P2
6
10
VCC
18
19
22
G1
Y5
D8
Q8
OE
4
9
7
9
G2A
Y6
VCC
5
7
11
8
6264
G2B
Y7
4.7K
CLK
R1
R16
3.32K
1
74HC138
CLR
1
2
74HC273
VCC
R19
10.0K
GND
C24
R18
10KB
D5
1N4148
10
12
10
1
2
11
0.001uF
R39
100K
2
1
D3
GND
1N4148
1
2
SW 4PDT
U5B
4053B
ETS SINGLE/MULTI
D4
1N4148
K1
R17
R20
SW3
SW DPST
FOR 20 dB ATTENUATION OF OUTPUT
CUT 1 TO 2 AND JUMP 2 TO 3
18.7K
B
C13
0.1uF
R73
499
B
GND
D17
1N4148
GND
SP1
R57
JP3
HEADER 1
R21
7.50K
3
3.32K
2
GND
C19
4.7uF
ELECT
1
R35
SPLASH PAD
RELAY DPDT
K2
GND
5KA
100
R72
4.7K
GND
D14
1N4148
R54
C18
220uF
ELECT
GND
J1
11.0K
V9
R56
C30
RELAY SPDT
R26
10
C15
220uF
ELECT
V9
62
100pF
V9
R34
500 POT
JP2
RJ-12
GND
R64
160
R24
4.99K
VCC
VDD
Q10
2N3904
R29
500K
Q8
2N3904
2N3904
R51
R65
3.9K
GND
VSS
VEE
Q1
2N3904
GND
Q9
C28
2N3904
95.3K
D7
1N4148
Q3
2N3904
R66
3.9K
R60
3.9K
U4B
Q11
R40
3.9K
R41
3.9K
R62
1K
R61
10K
100pF
6
R47
10.0K
R49
R50
R53
13.7K
R23
10
U4C
U5C
4053B
7
9
R63
3.9K
D18
1N4148
C35
R52
4
5
8
13
U4D
D8
1N4148
R27
1K
10
14
40.2K
75.0K
TL064
D16
1N4148
12
1uF
4.64K
V9
C33
10uF
D19
1N4148
A
R48
10.0K
C27
0.0033uF
TL064
R22
10
GND
A
R71
TL064
C26
0.022uF
Q4
2N3904
C29
D9
1N4148
P2
C14
100pF
VCC/2
R32
100K
0.068uF
GND
GND
D6
1N4148
P1
C16
EFFECTS GAIN
GND
GND
R33
1M
GND
Q2
2N3906
+
C36
1uF
POT
0.1uF
R30
1.5K
R31
100K
C17
VCC/2
R25
4.99K
M1
0.1uF
R28
10K
ASTATIC
+
VU
Title
ECHOMAX 2000
METER VU
GND
GND
GND
GND
GND
Size
Document Number
Rev
C
43900-00-00
Date:
Wednesday, May 14, 2003
Sheet
1
of
1
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