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8-4
Front Control Board Circuit Diagram:VFD
A
C251
C251
C252
C252
NC/10pF/50V/NP0
NC/10pF/50V/NP0
1
1
2
NC/10pF/50V/NP0
NC/10pF/50V/NP0
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
1
15
15
16
16
17
17
18
18
19
R189
R189
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
XP9
XP9
CON_30P_4GNDS
CON_30P_4GNDS
A
2
R638
R638
100
100
3.3V_STBY
IRM_14mm
IRM_14mm
1
IR_IN
R637
R637
4.7K
4.7K
IR
2
GND
3
VCC
4
C617
C617
CE606
CE606
+
+
GND
5
GND
C618
C618
NC/47uF/16V
NC/47uF/16V
IR601
IR601
47pF/50V/NP0
47pF/50V/NP0
0.1uF/16V/Y5V
0.1uF/16V/Y5V
touch
3
1
touch_SDA
1
2
touch_SCL
2
3
3
4
4
5
5
XP503
XP503
5pin/1.0mm
5pin/1.0mm
0.1uF/16V/X7R
0.1uF/16V/X7R
4
A
B
NFC_FD
R194
R194
0
0
R193
R193
0
0
NFC_FD
SCL_MCU
SDA_MCU
R190
R190
0
0
PIO13
3
R191
R191
0
0
PIO11
3
R192
R192
0
0
PIO9
3
BT_ADUIO_EN
3
BT_STATUS
3
MIC_Detect
3
LED_CON
USB_VCC
VCC_D
0
0
3.3V_STBY
LED_SCL
LED_SDA
IR_IN
MP3_BT_SW
3
BT_RESET
BT_RESET
3
+12V_D_A
R196
R196
0
0
MP3_BT_L
3
R197
R197
0
0
MP3_BT_R
3
R198
R198
0
0
MIC
3
A
touch_SDA
R947
R947
150
150
SCL_MCU
touch_SCL
SDA_MCU
R948
R948
150
150
3.3V_STBY
C614
C614
CE611
CE611
+
+
47uF/16V
47uF/16V
3.3V_STBY
LED_CON
R964
R964
B
C
D
SEG5
SEG5
1
LED_SDA
R162
R162
100
100
SDA
SEG6
SEG6
2
LED_SCL
R163
R163
100
100
SCL
SEG7
SEG7
3
A
4
B
5
C
6
D
7
E
8
SCL
9
SDA
10
11
F
12
G1
13
G2
14
R513
R513
10K
10K
R523
R523
NA/0
NA/0
R515
R515
PI012
3
PIO12
R550
R550
NFC_FD
0
0
0
0
C554
C554
10uF/10V/Y5V
10uF/10V/Y5V
Q18
Q18
NPN_3DG3904M
NPN_3DG3904M
R318
R318
R318
1K
1K
LED1
LED1
LED_RED
LED_RED
4.7K
4.7K
Q211
Q211
NPN_3DG3904M
NPN_3DG3904M
C
D
8-4
E
DP2
DP2
20
1
DIG1
E
DIG1
E
DIG2
19
2
M
DIG2
M
K
18
3
C
K
C
F
17
4
H
F
H
DIG3
16
5
L
DIG3
L
J
15
6
G2
J
G2
B
14
7
DP
B
DP1
G1
13
8
N
G1
N
12
9
DIG4
D
DIG4
D
A
11
10
DIG5
A
DIG5
LED
LED
U604
U604
28
DIG5
SEG5
SEG4
27
DIG4
SEG6
SEG3
VCC_D
26
DIG3
SEG7
SEG2
25
DIG0
VDD
24
DIG2
DIG1
SEG1
C781
C781
CE614
CE614
10uF/10V/Y5V
10uF/10V/Y5V
23
DIG1
0.1uF/50V/Y5V
0.1uF/50V/Y5V
DIG2
SEG0
22
DIG15
DIG15
DIG3
DIG15
ET6240
ET6240
21
DP
DIG4
DIG14
20
N
SCL
DIG13
19
M
SDA
DIG12
18
L
GND
DIG11
17
K
DIG5
DIG10
16
J
DIG6
DIG9
15
H
DIG7
DIG8
3.3V_STBY
R514
R514
10K
10K
NFC
1
NFC
2
R511
R511
NFC
G
XP502
XP502
Q555
Q555
2PIN/1.25mm
2PIN/1.25mm
N_2SK3018
N_2SK3018
1
1
R512
R512
C555
C555
10K
10K
10uF/10V/Y5V
10uF/10V/Y5V
E
1
2
3
1
2
4
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