Page 1
Block diagram
Lch
ECM
Rch
ECM
R03/AAA
Battery
DC1.5V
LPF BPF
NC
Adjustment
LPF BPF
NC
Adjustment
Power
SW
LED lighting
circuit
reversal
reversal
INPUT
Lch
Rch
GND
Phase
circuit
Phase
circuit
POWER IC
LA4537M
POWER IC
LA4537M
Lch-SP
Rch-SP
(No.XC009) 2-1
Page 2
Standard schematic diagram
C3
22u 6.3V
Lch
C4
22u 6.3V
Rch
+
+
BATT
R03
1.5V
Lch
ECM
Rch
ECM
R17
330
R19
39k
R20
39k
Lch
INPUT
GND
Rch
INPUT
C13
0.039u
C14
0.039u
R21
C15
0.1u
R22
C16
0.1u
6.8k
6.8k
C17
0.47u
C18
0.47u
R23
270k
Q5
2SC4081
R27
680
R24
270k
Q6
2SC4081
R28
680
R1
2.2k
C1
R3
33k
2.2u
D3
UDZS10B
R2
2.2k
C2
R4
39k
2.2u
D4
UDZS10B
S1
R41
22k
R43
270
0.0015u
Q7
2SC4081
C39
0.0015u
C38
R5
33k
C5
0.022u
0.0056u
R6
39k
C6
0.022u
0.0056u
R42
22k
R7
110k
C7
R8
110k
C8
Q8
2SC4081
R44
270
Q1
2SC4081
C9
2.2u
R9
470
R18
330
Q2
2SC4081
C10
2.2u
R10
470
C40
0.22u
R11
390k
Q3
2SC4081
R12
390k
Q4
2SC4081
D1
2R4HD-3
D2
MA2J111
R13
1.5k
R15
75
R14
1.5k
R16
75
2.2u
C12
2.2u
C11
VR1
10kB
VR2
10kB
+
C37
470u 4V
R25
680
220u 4V
R26
680
220u 4V
C24
C22
2.2u
C23
2.2u
C21
2.2u
2.2u
C19
C20
R29
150
+
+
C31
R30
150
+
+
C32
10u 4V
10u 4V
IC1
LA4537M
1
P/SW
2
IN1
3
PRE G
4
IN2
REF5VCC
IC2
LA4537M
1
P/SW
2
IN1
3
PRE G
4
IN2
REF5VCC
MUTE SW
OUT1
PWR G
OUT2
C25
100u 4V
MUTE SW
OUT1
PWR G
OUT2
C26
100u 4V
R31
15k
10
9
8
7
6
+
C33
0.1u
R32
15k
10
9
8
7
6
+
C34
0.1u
220u 4V
C35
0.1u
220u 4V
C36
0.1u
C27
C28
+
+
R33
R34
10
10
R35
R37
56
R36
R38
56
16
16
Lch SPEAKER
+
C29
220u 4V
R39
10
Rch SPEAKER
+
C30
220u 4V
R40
10
Use of Circuit Diagram
Notes:
1. The thick line ( ) is the B (+) power supply.
2. This circuit diagram is the r
improvement.
3. Values printed in red show the voltar
with the power switch ON.
4. Parts marked with (in the shaded ar
designated parts to ensure safety.
2-2 (No.XC009)
eference diagram. Circuits and constans are subject to change without notice for
es of each section measured by the tester (internal resistance 20 kOhms/V),
!
ea ) are safety parts.When replacing these, be sure to use only the
Page 3
Wiring diagram
Right
to Battery
shows the B(+) power supply
shows the ground
shows others.
Black
Green
to Drive unit and
Battery Terminal (Left)
White
Red
L+ L-
C19
GND
IN
C27
D2
C3
R17
C25
D1
C13
C15
C31
R37
S1
White
R1
R7
C7
VR1
R19
IC1
R35
6
J5
J1
J3
G
C1
R3
R5
Q1
R9
R11
R15
R21
R27
Q5
C23
R33
C33
C40
C38
NC100-02
C5
C9
C17
1
C35
R44
R13
J6
J2
R42
R31
Q8
C39
R29
J8
J7
R43
C21
J13
Q7
R41
R6
C2
C10
C11
Q4
R23
R25
R16
Q6
J15
R28
C24
IC2
C32
6
C36
C34
J10
J4
J11
J14
J34233-001A
Red
G
R4
Q2
R8
R24
R34
Black
D4
R2
C8
R12
R14
R26
1
C22
R10
R36
VR2
C12
C26
R32
J9
C18
R30
R40
C6
R18
R38
C37
C4
R20
C16
to Microphone
C14
R22
C20
C28
Red
C30
to Driver unit (Right)
R+
R-
+
Black
Left
to Drive unit and
Battery Terminal (Right)
White
Black
to Coil Leader
Red
GND
Red
Green
IN
L-
L+
Black
J34233-001B
Green
Black
R39
White
to Driver unit (Left)
Red
Black
G
Red
to Microphone
S
+
D3
C29
Red
to Battery
(No.XC009) 2-3
Page 4
Printed circuit board
G
R1
C1
R3
C13
C15
C31
R37
S1
R7
VR1
R19
R35
J5
J1
J3
R5
C7
Q1
R11
R15
R21
R27
IC1
6
R33
C33
C40
C38
NC100-02
R9
Q5
C23
C5
C9
R13
C17
1
C35
R44
R31
J6
J2
C39
R42
Q8
R29
J8
J7
R43
E
D
C
B
A
L+ L-
GND
IN
C3
R17
C19
C27
C25
D2
D1
C21
J13
Q7
R41
R6
C2
C10
C11
Q4
R23
R25
R16
Q6
J15
R28
C24
IC2
C32
6
C36
C34
J10
J4
J11
J14
J34233-001A
Q2
G
R4
R8
R24
R34
R12
D4
R2
C8
R14
R26
C22
1
R10
R36
VR2
C12
R30
C26
R32
J9
C18
R40
C6
C37
R18
R38
C4
shows the ground
shows others.
C16
C14
R20
C28
+
R22
C20
C30
R+
R-
G
S
wshows the B(+) po
C29
D3
+
R39
-
J34233-001B
L-
L+
IN
GND
1
P.C. Board Location
Symbol No.
IC1
IC2
D1
D2
D3
D4
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
VR1
VR2
R1
2-4 (No.XC009)
Location
ICs
Diode
Transistors
Resisters
Symbol No.
2C
3C
1A
1B
5D
3E
2D
3E
2D
3D
2C
3C
2A
2B
1D
3D
2E
Resisters
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
234 5
Location
3E
2E
3E
2E
2E
1E
3D
2D
3E
2D
3D
2D
3D
2D
3C
1D
4D
1D
4D
2D
Symbol No.
Resisters
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
Location
4D
2D
3D
2C
3C
2C
3C
2C
3C
2C
3B
2B
3B
1C
3B
1C
4B
5D
3B
2A
Symbol No.
Resisters
R42
R43
R44
Capacitors
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
Location
2A
2A
2A
2E
2E
1E
4E
2E
3E
1D
3D
2D
3D
3D
3D
1D
4D
1C
4D
Symbol No.
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
Location
Capacitors Capacitors
Symbol No.
2D
3C
1D
4D
2C
3C
2C
3C
1B
3B
1C
4C
5E
4C
1C
2B
2B
3B
2B
3B
C37
C38
C39
C40
Others
S1
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J13
J14
J15
Location
4A
2A
2B
2B
1A
1B
2B
2A
2B
1B
2B
2B
2C
3D
3B
3A
2B
3A
3C
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