10
May 2002
CIRCUIT DIAGRAM
fig.circit
FILTER LOW
A8V
LED BO
ARD ASSY
INPUT
75280
3L000
(PCB 22917496
0
0
)
GRY
A9
V
WHT
A8V
A8V
(PCB G292720
3
2/2)
DEPTH
(PCB 22927687
0
0
)
IN JACK GND
A8V
YEL
GRN
A4.0
V
A8
V
BRN
E.LEVEL
7524
43O000
A9V
RED
OUTPUT B
A8
V
ORG
(PCB G2927203 1/2)
FILTER HIGH
A8V
VIO
(F5209133)
AC ADAP
TOR
OUTPUT A (MONO)
A8V
BLK
JK
BOA
RD ASSY
A8V
A8
V
MIN
MAX
M
IN
MAX
MIN
MAX
CUT
FLA
T
RATE
CUT
FLA
T
*1
*1
GRY
ORG
WHT
CHECK
*1
:
No
Mounting
*2
: S-81250SGY or NJU7201L50-T3
*1
*2
*1
*1
752803P001
MAIN BOARD ASSY
D
A
+
+
+
+
D
A
+5V
A
+
D
+
+5V
D
+
+
D
+
+
A
A
A
A
D
D
+
+
+
A
D
+
+
+5V
+
D
A
D
D
+
+
+
D
+5V
D
+5V
+
+
D
+
D
A
A
A
A
A
A
A
A
A
D
C16 1/50
C32 100/1
6
R47
1
0
k
R53 1M
5
7
SW1 JM-0
4
0
4
1
2
13
20
VR4 250kC
1
2
3
R8 27k
R18 1k
Q4 2SK8
79Y
3
1
2
R33 100k
R50 10k
R46 56k
R60 5.6k
C5
0.0068
R31
7
.5k
C30 0.01
C15 0.0027
C18 270p
R24 1M
9
10
DA1 1SS3
0
1
1
2
3
Q6 2SC4116GR
1
2
3
R52 33k
+
-
IC4B NJM022BM
6
5
7
R44 10k
C42 220p
C43 0.47/5
0
C2
1
0.018
C24 0.33
C2 1/50
R65 33k
BT1
9V 006P
1
2
21
19
20
16
R36 33k
R55 47k
VR1-a
50kAx2
1
2
3
17
14
+
-
IC4A NJM022BM
2
3
1
C45 0.033
Q8 2SC4116GR
1
2
3
R39 56k
C26 0.1
R68 220k
R9 10k
D2
GS1
G
10
12
18
16
R5 10k
C33 100/16
C40
1
5
0
p
R40 100
k
C50 0.01
C37 0.1
DA2 1SS
301
1
2
3
R64 1M
VR3 250
kC
1
2
3
15
3
R12 10k
C8 0.1(
P
)
R4 27k
Q1 2SC3324GR
1
2
3
R20 1M
R42 1.8
k
R58 120k
C27 100/16
R32 75k
R10 10k
R26 12k
R28 100k
18
D1 RD5.6S
B
3
1
2
C49 0.01
C41 220p
R15 47k
RH03ADCS4X (47kB)
RT1
1
2
3
C2
3
0.018
C28 0.01
R23 10k
+
-
IC6A NJM022BM
2
3
1
LED1 L-34HDSL
1
2
2
JK3 HTJ-06
4-12D
1
2
3
22
12
15
D3 1SS3
5
5
1
2
R1 1k
R54 10k
C7 10/16
JK1 HTJ-064
-1
3
D
1
2
3
9
R51 4.7k
C38 470p
Q10 2SC4116GR
1
2
3
R48 470
C10 0.1
4
JK2 HTJ-06
4-12D
1
2
3
1
C3
0.0068
R49 4.7k
R41 100k
+
-
IC2B NJM022BM
6
5
7
2
3
Q5 2SC4116GR
1
2
3
C31 0.047
Q2 2SK
879Y
3
1
2
C14 47/10
C11 270p
R11 12k
C22
0.0033
JK4 HEC04
70-01-230
2
1
3
17
R13 47k
C17
10/16
C34 0.1
+
-
IC5B M5223AFP
6
5
7
R56 100
Q9 2SC4116G
R
1
2
3
R27 10k
C13
0.47/5
0
R29
7.5k
R30
7
5
k
R22 22k
VR1-a
1
2
3
D4 1SS
355
1
2
C9 100p
R17 15k
C1
10/16
R57 47k
Q7 2SC4116GR
1
2
3
R38 56k
C6
100/1
6
5
11
13
19
R34 1M
R14 1M
C4 100p
C47
10/1
6
C48
10/16
C51 0.033
C39 470p
R59 47k
R7 10k
C20 0.047
R63 10k
6
7
14
VR1-b 250
kC
1
2
3
R21 100
k
Q3 2SK880GR
3
1
2
+
-
IC2A NJM022BM
2
3
1
R45 56k
R67 1k
+
-
IC6B NJM022BM
6
5
7
8
1
VR2 100kB
1
2
3
C44 0.033
R6 1M
C25 0.1
R43 15k
IC1
ES5602
8
S
VCC
1
REF
2
A GND
3
D GND
4
NC
5
F_ADJ
6
uCOM/EASY
7
VDD
8
TES
T
9
MODE
10
REQ/DEL1
11
SECK/DEL2
12
SEDATA/DEL3
13
MUTE
14
GC1
15
CC1
16
GC0
17
CC0
18
OP1 OUT
19
OP1 IN
20
OP2 IN
21
LPF2 OUT
22
LPF2 IN
23
LPF2 OUT
24
NC
25
ECHO FB
26
LPF1 OUT
27
LPF1 IN
28
R16 18k
R25 10k
C19 0.003
3
+
-
IC5A M5223AFP
2
3
1
R66 10k
R62 100k
11
C53 47/10
R61 15k
C52 0.0012
+
-
IC6C NJM022BM
8
4
C46 0.01
R35 10k
C29 0.33
C12 0.0027
+
-
IC5C M5223AFP
8
4
+
-
IC2C NJM022BM
8
4
IC7 S-
81
250SGY
IN
2
OUT
3
COM
1
IC3
IN
2
OUT
3
COM
1
TER2
EARTH_TERMINAL(
R
V
-2
)
C36 47/10
R37 10k
C35 10/16
R3 100
k
TER1
E
ARTH_TERMINAL(
R
V
-2
)
+
-
IC4C NJM022BM
8
4
R19 10k
R2 10k