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5-13. SCHEMATIC DIAGRAM - FRONT Board -
1
2
FRONT BOARD
A
B
XS1
XS1
13PIN/2.0mm/120mm
13PIN/2.0mm/120mm
13
13
12
R14
R14
0
0
12
11
R16
R16
0
0
11
10
R58
R58
1K
1K
10
9
R17
R17
0
0
9
8
8
C
7
R19
R19
0
0
7
6
R20
R20
0
0
6
5
5
4
R22
R22
1K
1K
4
3
R24
R24
0
0
3
2
2
1
1
D
SW1
SW1
KEY1
<BASS BOOST>
<BASS BOOST>
C13
C13
47pF/50V/NP0
47pF/50V/NP0
R44
R44
47K
47K
SW5
SW5
KEY2
<TUNING+>
<TUNING+>
C17
C17
47pF/50V/NP0
47pF/50V/NP0
R48
R48
47K
47K
E
SW9
SW9
KEY3
<EQ>
<EQ>
C21
C21
47pF/50V/NP0
47pF/50V/NP0
R52
R52
47K
47K
SW13
SW13
KEY4
<BLUE TOOTH>
<BLUE TOOTH>
C25
C25
F
47pF/50V/NP0
47pF/50V/NP0
R55
R55
47K
47K
HCD-ECL77BT/ECL99BT
3
4
+5VA
R3
R3
10K
10K
Q2
Q2
NPN_3DG3904M
NPN_3DG3904M
R9
R9
8.2K
8.2K
Q5
Q5
NPN_3DG3904M
NPN_3DG3904M
C2
C2
3300pF/50V/X7R
3300pF/50V/X7R
STB_5V
R60
R60
1K
1K
IR1
IR1
1
LED1
LED1
IR
2
GND
LED_BULE
LED_BULE
3
VCC
4
GND
R59
R59
R18
R18
5
GND
4.7K
4.7K
4.7K
4.7K
IRM_10mm
IRM_10mm
47pF/50V/NP0
47pF/50V/NP0
VFD_CLK
VFD_DATA
POWER_KEY
VFD_CS
+12V
-24V
IR
STB_5V
STB_5V
VR1
VR1
5
2
GND
VOL-
4
GND
3
1
GND
VOL+
ENCODER
ENCODER
C10
C10
100pF/50V/NP0
100pF/50V/NP0
SW2
SW2
K1
KEY1
K2
KEY1
<FUNCTION>
<FUNCTION>
C14
C14
C15
C15
47pF/50V/NP0
47pF/50V/NP0
R45
R45
47pF/50V/NP0
47pF/50V/NP0
47K
47K
SW6
SW6
KEY2
KEY2
<ENTER>
<ENTER>
C18
C18
C19
C19
47pF/50V/NP0
47pF/50V/NP0
R49
R49
47pF/50V/NP0
47pF/50V/NP0
47K
47K
SW10
SW10
KEY3
KEY3
<NEXT>
<NEXT>
C22
C22
C23
C23
47pF/50V/NP0
47pF/50V/NP0
R53
R53
47pF/50V/NP0
47pF/50V/NP0
47K
47K
SW14
SW14
KEY4
KEY4
<BLUE TOOTH>
<BLUE TOOTH>
C26
C26
C27
C27
47pF/50V/NP0
47pF/50V/NP0
R56
R56
47pF/50V/NP0
47pF/50V/NP0
47K
47K
5
6
+12V
AC2
R2
R2
R1
R1
0
0
470
470
+12VA
R5
R5
R4
R4
Q1
Q1
2.2
2.2
NPN_3DG3904M
NPN_3DG3904M
470
470
AC1
R6
R6
5.6
5.6
C1
C1
0.1uF/50V/X7R
0.1uF/50V/X7R
CE1
CE1
"3.3uF
"3.3uF
R7
R7
470
470
R8
R8
330/1%
330/1%
Q3
Q3
NPN_3DG3904M
NPN_3DG3904M
R10
R10
4.7K
4.7K
Q4
Q4
ZD1
ZD1
C28
C28
PNP_3CG3906M
PNP_3CG3906M
BZX79C6V2
BZX79C6V2
R11
R11
CE2
CE2
R13
R13
10K
10K
"3.3uF
"3.3uF
R12
R12
10K
10K
1K
1K
-24V
R15
R15
0
0
Improve AM sensitivity
R21
R21
1K
1K
STB_5V
R29
R29
100
100
R26
R26
1K
1K
+12V
R27
R27
1K
1K
+5VA
IR
C6
C6
ZD2
ZD2
C7
C7
CE3
CE3
+ +
C9
C9
BZX79C5V1
BZX79C5V1
4.7uF/16V/Y5V
4.7uF/16V/Y5V
0.1uF/50V/X7R
0.1uF/50V/X7R
47uF/16V
47uF/16V
C12
C12
0.1uF/25V/Y5V
0.1uF/25V/Y5V
+5VA
R31
R31
1K
1K
VOL-
R30
R30
22
22
VFD_DATA
R41
R41
100
100
R40
R40
22
22
VOL+
VFD_CLK
R42
R42
100
100
C11
C11
100pF/50V/NP0
100pF/50V/NP0
VFD_CS
R43
R43
100
100
SW3
SW3
SW4
SW4
K3
KEY1
K4
<PLAY>
<PLAY>
<STOP>
<STOP>
C16
C16
R46
R46
47pF/50V/NP0
47pF/50V/NP0
R47
R47
47K
47K
47K
47K
SW7
SW7
SW8
SW8
KEY2
<TUNING->
<TUNING->
<REC TO USB>
<REC TO USB>
C20
C20
R50
R50
47pF/50V/NP0
47pF/50V/NP0
R51
R51
47K
47K
47K
47K
SW11
SW11
SW12
SW12
POWER_KEY
<PREV>
<PREV>
<POWER ON/OFF>
<POWER ON/OFF>
R54
R54
47K
47K
C24
C24
100pF/50V/NP0
100pF/50V/NP0
SW15
SW15
<OPEN/CLOSE>
<OPEN/CLOSE>
R57
R57
47K
47K
31
31
7
8
9
VFD1
VFD1
-
-
AC2
-24V
U1
U1
34
22
G4
SEG8
35
21
G3
SEG7
36
20
G2
SEG6/K6
37
19
G1
SEG5/K5
38
18
VDD
SEG4/K4
39
17
DRIVER_VFD_CS6312EN
DRIVER_VFD_CS6312EN
LED4
SEG3/K3
40
16
R28
R28
LED3
SEG2/K2
41
15
+5VA
51K
51K
LED2
SEG1/K1
42
14
LED1
VDD
43
13
GND
KEY4
44
12
OSC
KEY3
C8
C8
4.7uF/16V/Y5V
4.7uF/16V/Y5V
R32
R32
R33
R33
1K
1K
1K
1K
R34
R34
4.7K
4.7K
+5VA
KEY PART
HCD-ECL77BT/ECL99BT
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