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6-1
A
Front Board Circuit Diagram:
1
IR CIRCUIT
R29
R29
2.2k
2.2k
IR
IR1
IR1
5
3
GND
VCC
2
GND
R30
R30
4
1
GND
IR
+
+
100 ohm
100 ohm
REM
REM
C12
C12
CE6
CE6
C11
C11
47pF
47pF
47uF/16V
47uF/16V
0.1uF
0.1uF
GND
to main board
C13
C13
JP2
JP2
100pF
100pF
R48 100R
R48 100R
2
IR
1
GND
2
VSTB
3
VCLK
4
VD
5
GND
6
PCON
7
POWER
8
C15
C15
OPEN
C17
C17
C18
C18
9
C14
C14
100pF
100pF
C16
C16
100pF
100pF
100pF
100pF
9PIN/2.0mm
9PIN/2.0mm
100pF
100pF
100pF
100pF
GND
to power board
JP1
JP1
5PIN/2.0mm/130mm
5PIN/2.0mm/130mm
1
+5VSTANBY
1
R49
R49
100
100
PCON
2
2
3
-24V
3
GND
4
4
+12V
5
5
FB1 500
FB1 500
C25
C25
C26
C26
C24
C24
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
GND
3
+5VSTANBY
R47
R47
150
150
+5V
R36
R36
10K
10K
R40
R40
Q6
Q6
3904
3904
4.7K
4.7K
K1
K1
OPEN/CLOSE
OPEN/CLOSE
OPEN
JP3
JP3
4
R45
R45
470
470
POWER
1
LED-2
PICH=2.0
PICH=2.0
2
3
TO SWITCH BOARD
A
B
+5VSTANBY
+5V
R3
R3
10K
10K
Q2
Q2
3DG3904M
3DG3904M
C1
C1
0.1uF
0.1uF
R8
R8
18K
18K
R9
R9
4.7K
4.7K
Q5
Q5
R11
R11
3DG3904M
3DG3904M
1K
1K
C2
C2
R13
R13
1000pF
1000pF
1K
1K
R33
R33
150
150
VCC
D350
D350
USBP1
1
6
1
6
USBM1
2
5
2
5
3
4
GND
GND
RClamp0522P
RClamp0522P
B
C
+12V
VFD3
VFD3
R1
R1
VFD20-0824
VFD20-0824
470
470
R2
R2
2.2
2.2
AC2
R4
R4
470
470
Q1
Q1
3DG3904M
3DG3904M
R6
R6
330
330
R7
R7
5.6
5.6
R5
R5
AC1
CE1
CE1
470
470
3.3uF/50V
3.3uF/50V
Q4
Q4
Q3
Q3
3DG3904M
3DG3904M
3CG3906M
3CG3906M
R10
R10
CE2
CE2
ZD1
ZD1
R12
R12
10K
10K
3.3uF/50V
3.3uF/50V
BZX79C6V2
BZX79C6V2
10K
10K
C27
C27
0.1uF
0.1uF
-24V
R23
R23
+12V
R34
R34
+5V
51K
51K
1K
1K
+
+
R35
R35
CE7
CE7
C28
C28
1K
1K
47UF 16V
47UF 16V
0.1uF
0.1uF
ZD2
ZD2
BZX79C5V1
BZX79C5V1
-24V
R38
R38
R37
R37
10K
10K
R39
R39
C5
C5
10K
10K
10K
10K
0.1uF
0.1uF
CE3
CE3
22uF/50V
22uF/50V
VSTB
R44
R44
100
100
VCLK
R43
R43
100
100
VD
R42
R42
100
100
C29
C29
C30
C30
C31
C31
100pF
100pF
100pF
100pF
100pF
100pF
FB710
FB710
JP4
JP4
0ohm
0ohm
pitch=2.0mm*4
pitch=2.0mm*4
1
USBM1
2
CE35
CE35
C157
C157
USBP1
+
+
3
4
220uF/16v
220uF/16v
0.1UF
0.1UF
P600
P600
USB connector/NC
USB connector/NC
VCC
USBP1
1
USBM1
2
USBP1
USBM1
3
GND
4
GND
5
GND
6
C
6-1
D
AC2
-24V
34
22
G4
SEG8
35
PT6312
PT6312
21
G3
SEG7
36
20
G2
SEG6/K6
U4
U4
37
19
G1
SEG5/K5
38
18
VDD
SEG4/K4
39
17
K1
K2
K3
LED4
SEG3/K3
40
16
LED3
SEG2/K2
41
15
LED2
SEG1/K1
42
14
LED1
VDD
+5V
43
13
D2
D2
GND
KEY4
1N4148
1N4148
44
12
OSC
KEY3
R28
R28
K2
K2
2.2k
2.2k
PLAY/PAUSE
PLAY/PAUSE
R32
R32
10K
10K
R27
R27
2.2k
2.2k
K3
K3
R31
R31
10K
10K
STOP
STOP
C22
C22
47pF
47pF
C32
C32
47pF
47pF
D
E
1
2
3
4
E
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