JBL ONBEAT HOTEL (serv.man2) Service Manual ▷ View online
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
14
U2TX
U2RX
MCU_RST
SP2_CLK
Debug
MCU
⚻ᔩ
SP2_SDI
IR
SP2_SDO
INT1
INT3
INT2
ADC2
ADC3
ADC4
SP2_SS
Apple Authentication
Active Mode Current : 7.5mA
NEW PART
BAT_3V
STB
SPI_DATA
CLK
NFC
ADC_KEY1
ADC_KEY2
ADC_KEY2
AUDIO_SENSE
USB_SW
MCU_DATA
AMP_RST
AMP_SCL
AMP_SDA
SYS_EN
M
CU_
RST
DOCK_D+
DOCK_D-
DOCK_D-
ICE_DATA
ICE_CLK
ICE_CLK
MCU_RST
OSCO
OSCi
CP_SCL
CP_SDA
CP_SDA
MCLK
ICE_CLK
ICE_DATA
MCU_RST
I2S_SW1
BT_RX
CLK
I2S_SW
SPI_DI
BT_TX
SPI_CK
BEEP
BT_RESET
LRCK
BCLK
CP_SCL
CP_SDA
SYS_EN
BT_RESET
MCLK
BT_RX
BT_TX
LRCK
AUDIO_SENSE
MCU_DATA
I2S_SW
I2S_SW1
AMP_SCL
AMP_SDA
SPI_SS
AMP_RST
PDN
BCLK
ADC_KEY1
ADC_KEY2
SPI_DO
DOCK_D-
DOCK_D+
RTC_SCL
RTC_SDA
RTC_SDA
TIME_ON/OFF
RTC_SDA
RTC_SCL
SPI_DO
SPI_SS
SPI_CK
SPI_DI
SPI_DI
NFC_FD
NFC_FD
STB
SPI_DATA
NFC
BAT_3V
TIME_ON/OFF
BEEP
TIME_ON/OFF
PDN
DOCK_D-
DOCK_D+
USB_SW
MCU_3.3V
CHARGE_5V
MCU_3.3V
MCU_3.3V
MCU_3.3V
MCU_3.3V
MCU_3.3V
M
C
U
_3.
3V
3.3V
MCU_3.3V
MCU_3.3V
MCU_3.3V
MCU_3.3V
MCU33V
MCU33V
RTC_3.3V
RTC_3.3V
RTC_3.3V
3.3V
Dock_5v
SYS_EN
5
BT_RESET
7
MCLK
6,8,9
BT_RX
7
BT_TX
7
LRCK
6,8,9
AUDIO_SENSE
8
MCU_DATA
9
I2S_SW
9
I2S_SW1
9
AMP_SDA
9
AMP_SCL
9
AMP_RST
9
PDN
9
BCLK
6,8,9
DOCK_D-
6
DOCK_D+
6
NFC_FD
7
NFC
7
USB_SW
5
R190
10K
10K
R190
10K
10K
DOCK_D-
DOCK_D-
TP39TP39
R42
0
R42
0
Q7
P_AP2305
P_AP2305
Q7
P_AP2305
P_AP2305
G
D
S
R83
0
R83
0
C7
8
NC/
5pF/
50V/
NP0
C7
8
NC/
5pF/
50V/
NP0
+
CE12
22uF/16V
+
CE12
22uF/16V
C
144
100pF/
50V/
NP0
C
144
100pF/
50V/
NP0
R91
0
0
R91
0
0
R41
10K/NC
10K/NC
R41
10K/NC
10K/NC
R
881
10K
R
881
10K
C
139
10uF/10V/Y5V
C
139
10uF/10V/Y5V
R136
0
R136
0
C556
10uF/10V/Y5V
C556
10uF/10V/Y5V
U4
PCF85163/NC
U4
PCF85163/NC
OSCI
1
OSCO
2
INT/
3
VSS
4
SDA
5
SCL
6
CLKOUT
7
VDD
8
R286
33
R286
33
ESD1
PESD5V0S1BA/
30K/
35pF
ESD1
PESD5V0S1BA/
30K/
35pF
2
1
C44
C44
R49
0
R49
0
R278
33
R278
33
FB10
500/200mA
FB10
500/200mA
ESD2
PESD5V0S1BA/
30K/
35pF
ESD2
PESD5V0S1BA/
30K/
35pF
2
1
C
145
100pF/
50V/
NP0
C
145
100pF/
50V/
NP0
R
24
10K
R
24
10K
R48
0
R48
0
C153
0.1uF/16V/X7R
C153
0.1uF/16V/X7R
R78
1K
R78
1K
C49
10uF/10V/Y5V
C49
10uF/10V/Y5V
R85
0
R85
0
R81
0
R81
0
U17
SPI_2Mb_SST25VF020B
SPI_2Mb_SST25VF020B
U17
SPI_2Mb_SST25VF020B
SPI_2Mb_SST25VF020B
CE#
1
SO
2
WP#
3
VSS
4
SI
5
SCK
6
HOLD#
7
VDD
8
R54
10K
R54
10K
C69
0.1uF/16V/X7R
C69
0.1uF/16V/X7R
R123
0
R123
0
R276
33
R276
33
R61
1M
R61
1M
R124
0
R124
0
R44
0
0
R44
0
0
R76
0
R76
0
DOCK_D+
DOCK_D+
C67
0.1uF/16V/X7R
C67
0.1uF/16V/X7R
R111
0
R111
0
R117
0
R117
0
FB3
500/200mA
FB3
500/200mA
R121
0
R121
0
TP31TP31
C6
8
NC/
5pF/
50V/
NP0
C6
8
NC/
5pF/
50V/
NP0
C3
4
10pF/
50V/
NP0
C3
4
10pF/
50V/
NP0
C55
10uF/10V/Y5V
C55
10uF/10V/Y5V
C
141
100pF/
50V/
NP0
C
141
100pF/
50V/
NP0
R283
33
R283
33
C52
10uF/10V/Y5V
10uF/10V/Y5V
C52
10uF/10V/Y5V
10uF/10V/Y5V
R116
0
R116
0
R63
10K
R63
10K
R80
NC/0
R80
NC/0
R282
33
R282
33
R46
10K
10K
R46
10K
10K
U13
IC_8P_CP2.0C
U13
IC_8P_CP2.0C
GND
1
SDA
2
NC
3
NC
4
NC
5
SCL
6
RST
7
VCC
8
GND
9
Q11
NPN_3DG3904M
NPN_3DG3904M
Q11
NPN_3DG3904M
NPN_3DG3904M
R53
10K
R53
10K
XP4
8PIN/1.0mm
XP4
8PIN/1.0mm
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
R62
10K
R62
10K
R138
0
R138
0
C3
7
10pF/
50V/
NP0
C3
7
10pF/
50V/
NP0
R
122
0
R
122
0
Q556
PNP_3CG3906M
PNP_3CG3906M
Q556
PNP_3CG3906M
PNP_3CG3906M
R84
0
R84
0
U5
PIC32MX250F128DT
U5
PIC32MX250F128DT
SDA1/RB9
1
PMAI/RC6
2
PMAO/RC7
3
PMA5/RC8
4
PMA6/RC9
5
VSS
6
VCAP
7
D+/RB10
8
D-/RB11
9
VUSB3V3
10
PMRD/RB13
11
PMA10/RA10
12
PMMA7/RA7
13
SCK1/RB14
14
SCK2/RB15
15
AVSS
16
AVDD
17
MCLK
18
PMD0/RA0
19
PMD6/RA1
20
PMD0/RB0
21
PMD1/RB1
22
PMD2/RB2
23
PMWR/RB3
24
RPCO/RC0
25
RPC1/RC1
26
RPC2/RC2
27
VDD
28
VSS
29
OSCI/CLK/RA2
30
OSC2/CLKO/RA3
31
TDO/RA8
32
SOSCO/RB4
33
SOSCI/RA4
34
TDI/RA9
35
RPC3/RC3
36
RPC4/RC4
37
RPC5/RC5
38
VCC
39
VDD
40
RPB5/RB5
41
VBUS
42
RPB7/RB7
43
RPB8/RB8
44
D5
LL4148
D5
LL4148
C4
5
22pF/
50V/
NP0
C4
5
22pF/
50V/
NP0
C7
9
NC/
5pF/
50V/
NP0
C7
9
NC/
5pF/
50V/
NP0
FB9
500/200mA
FB9
500/200mA
XS5
2PIN/2.0mm
2PIN/2.0mm
XS5
2PIN/2.0mm
2PIN/2.0mm
1
1
2
2
R280
33
R280
33
C
142
100pF/
50V/
NP0
C
142
100pF/
50V/
NP0
XP2 5PIN/2.0mm
XP2 5PIN/2.0mm
1
1
2
2
3
3
4
4
5
5
C557
10uF/10V/Y5V
C557
10uF/10V/Y5V
TP22
TP22
R77
750K
R77
750K
C
146
100pF/
50V/
NP0
C
146
100pF/
50V/
NP0
P4
BUZZER7.6-12
P4
BUZZER7.6-12
Y5
4MHz/30PPM
Y5
4MHz/30PPM
C43
0.1uF/16V/X7R
C43
0.1uF/16V/X7R
R277
33
R277
33
C6
6
0.1uF/16V/X7R
C6
6
0.1uF/16V/X7R
C
143
100pF/
50V/
NP0
C
143
100pF/
50V/
NP0
R
23
10K
R
23
10K
FB23
100/1.5A
FB23
100/1.5A
C7
5
0.
1uF/
16V/
X7R
C7
5
0.
1uF/
16V/
X7R
C50
10uF/10V/Y5V
C50
10uF/10V/Y5V
R279
33
R279
33
R86
0
R86
0
Q557
PNP_3CG3906M
PNP_3CG3906M
Q557
PNP_3CG3906M
PNP_3CG3906M
R47
0
R47
0
R79
0
0
R79
0
0
TP40TP40
D2
BAT54C
BAT54C
D2
BAT54C
BAT54C
1
3
2
C36
0.1uF/16V/X7R
C36
0.1uF/16V/X7R
C4
6
22pF/
50V/
NP0
C4
6
22pF/
50V/
NP0
R125
0
R125
0
XP5
15PIN/0.5mm
15PIN/0.5mm
XP5
15PIN/0.5mm
15PIN/0.5mm
1
1
2
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
15
15
GND
18
GND
19
GND
16
GND
17
Y2
32.
768KHz/
0PPM
Y2
32.
768KHz/
0PPM
C4
7
22pF/
50V/
NP0
C4
7
22pF/
50V/
NP0
C51
0.1uF/16V/X7R
C51
0.1uF/16V/X7R
R114
0
R114
0
R281
33
R281
33
R82
0
R82
0
7-2
7-2
Main Board Circuit Diagram:MCU
5
5
4
4
3
3
2
1
D
D
C
C
B
B
A
Bluetooth
CSB
MISO
BT_CLK
MOSI
GND
BT_BCLK
BT_DATA
BT_DATA
BT_LRCK
BT_RX
BT_TX
BT_TX
BT_RESET
BT_D+
BT_D-
BT_D-
BT_3V3
BT_D+
BT_D-
BT_D-
BT_RESET
BT_RX
BT_TX
BT_LRCK
BT_DATA
BT_BCLK
NFC_FD
NFC
PI03
NFC_FD
NFC
PI03
BT_D+
BT_D-
D
MCU_3.3V
D
D
D
D
BT_3V3
BT_3V3
BT_3V3
5V
MCU_3.3V
D
BT_RESET
6
BT_RX
6
BT_TX
6
BT_LRCK
9
BT_DATA
9
BT_BCLK
9
NFC_FD
6
NFC
6
BT_D+
5
BT_D-
5
TP32
TP32
R96
33
R96
33
R512
10K
10K
R512
10K
10K
TP25
TP25
R98
33
R98
33
C53
10uF/10V/Y5V
C53
10uF/10V/Y5V
R514
10K
10K
R514
10K
10K
R523
NA/0
R523
NA/0
R94
33
R94
33
XP1
6PIN/2.0mm
6PIN/2.0mm
XP1
6PIN/2.0mm
6PIN/2.0mm
1
1
2
2
3
3
4
4
5
5
6
6
C554
10uF/10V/Y5V
C554
10uF/10V/Y5V
C54
0.1uF/25V/Y5V
C54
0.1uF/25V/Y5V
C555
10uF/10V/Y5V
C555
10uF/10V/Y5V
R95
33
R95
33
TM39
TM39
R97
33
R97
33
R89
220K
220K
R89
220K
220K
R550
0
R550
0
Q19
NPN_3DG3904M
Q19
NPN_3DG3904M
FB12
500/200mA
FB12
500/200mA
TM40
TM40
R515
0
R515
0
R90 1K
R90 1K
C150
0.1uF/25V/Y5V
C150
0.1uF/25V/Y5V
R511
1
R511
1
U7
BT_BM153
U7
BT_BM153
AIO1
1
AIO0
2
RESET
3
GND
4
PIO9
5
PIO1 0
6
PIO11
7
PIO12
8
PIO13
9
PIO14
10
PIO15
11
GND
12
VDD
13
VDD_USB
14
+1V8
15
GND
16
USB_DP
17
USB_DN
18
UART_RTS
19
ART_CTS
20
UART_RX
21
UART_TX
22
PCM_IN
23
PCM_SYNC
24
PCM_CLK
25
PCM_OUT
26
SPI_CSB
27
SPI_MISO
28
SPI_CLK
29
SPI_MOSI
30
GND
48
MIC_A_N
47
MIC_A_P
46
MIC_B_N
45
MIC_B_P
44
MIC_BIAS
43
GND_S
42
SPK_R_P
41
SPK_R_N
40
SPK_L_P
39
SPK_L_N
38
GND
37
LED0
36
LED1
35
VDD_CHG
34
GND
33
VDD_BAT
32
VRE_IN
31
GND
60
RF
59
GND
58
PIO8
57
PIO7
56
PIO6
55
PIO5
54
PIO4
53
PIO3
52
PIO2
51
PIO1
50
PIO0
49
TP17
TP17
TP16
TP16
Q555
N_2SK3018
Q555
N_2SK3018
G
D
S
TP28
TP28
TP19
TP19
TP18
TP18
R513
10K
10K
R513
10K
10K
7-3
7-3
Main Board Circuit Diagram:BT
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
AUX_ROUT
LRCK
MCLK
BCLK
ADC_RST
ADC_DATA
AUX_LOUT
AUDIO_SENSE
AUDIO_SENSE
MCLK
MCLK
BCLK
LRCK
ADC_DATA
AUX_ROUT
AUX_LOUT
AUX_LOUT
3.3V
5V
3.3V
MCU_3.3V
MCU_3.3V
MCU_3.3V
AUDIO_SENSE
6
MCLK
6,8,9
BCLK
6,8,9
LRCK
6,8,9
ADC_DATA
9
R151
0
R151
0
FB18
500/200mA
FB18
500/200mA
R150
0
R150
0
R152
NC/10K
NC/10K
R152
NC/10K
NC/10K
R
135
4.
7K
R
135
4.
7K
U14
ADC_AK5358A
U14
ADC_AK5358A
AINL
2
CKS1
3
AGND
5
VCOM
4
PDN
13
DIF
14
VA
6
VD
7
DGND
8
SDTO
9
MCLK
11
SCLK
12
LRCK
10
AINR
1
CKS2
15
CKS0
16
R143
0
R143
0
C93
0.1uF/25V/Y5V
C93
0.1uF/25V/Y5V
C28
1uF/16V/Y5V
C28
1uF/16V/Y5V
D4
BAT54C
D4
BAT54C
1
3
2
C102
1000pF/50V/X7R
C102
1000pF/50V/X7R
C151
1uF/16V/Y5V
C151
1uF/16V/Y5V
C101
1000pF/50V/X7R
C101
1000pF/50V/X7R
C99
10uF/10V/Y5V
C99
10uF/10V/Y5V
R
133
4.
7K
R
133
4.
7K
R153
NC/10K
NC/10K
R153
NC/10K
NC/10K
Q18
2SC2712
2SC2712
Q18
2SC2712
2SC2712
R210
2.2M
2.2M
R210
2.2M
2.2M
R158
0
R158
0
R
134
4.
7K
R
134
4.
7K
R211
2.2M
2.2M
R211
2.2M
2.2M
C64
3300pF/
50V/
X7R
C64
3300pF/
50V/
X7R
R215
33
R215
33
+
CE13
220uF/16V
+
CE13
220uF/16V
R209
27K
27K
R209
27K
27K
+
CE15
10uF/16V
+
CE15
10uF/16V
R192
33
R192
33
R144
0
R144
0
Q14
NPN_3DG3904M
NPN_3DG3904M
Q14
NPN_3DG3904M
NPN_3DG3904M
C287
NC/3300pF/50V/X7R
NC/3300pF/50V/X7R
C287
NC/3300pF/50V/X7R
NC/3300pF/50V/X7R
R212
12K
12K
R212
12K
12K
C100
10uF/10V/Y5V
C100
10uF/10V/Y5V
R203
150K
R203
150K
R129
4.7
R129
4.7
C103
0.1uF/25V/Y5V
C103
0.1uF/25V/Y5V
C65
3300pF/
50V/
X7R
C65
3300pF/
50V/
X7R
L6
10uH/280mA
L6
10uH/280mA
Q17
2SC2712
2SC2712
Q17
2SC2712
2SC2712
R156
0
R156
0
R207
1M
1M
R207
1M
1M
C152
1uF/16V/Y5V
C152
1uF/16V/Y5V
R214
12K
12K
R214
12K
12K
XS1
3PIN/2.0mm/140mm
XS1
3PIN/2.0mm/140mm
1
1
2
2
3
3
R191
33
R191
33
7-4
7-4
Main Board Circuit Diagram:AUDIO&ADC
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
Inputs
H
L
A port = B1 port
S
A port = B2
port
port
L
OE
Function
L
AMP_LRCK
AMP_BCLK
AMP_BCLK
AMP_SDA
AMP_SCL
AMP_SCL
AMP_DATA
AMP_RST
L+
L-
R+
PDN
R-
AMP_MCLK
3157_DATA
MCU_DATA
ADC_DATA
I2S_SW
MCLK
BCLK
LRCK
ADC_DATA
MCU_DATA
I2S_SW
I2S_SW1
AMP_SDA
AMP_SCL
AMP_RST
PDN
BT_DATA
BT_BCLK
AMP_BCLK
AMP_DATA
AMP_LRCK
BCLK
AMP_MCLK
BT_LRCK
I2S_SW1
MCLK
I2S_SW1
BT_DATA
3157_DATA
LRCK
BT_BCLK
BT_LRCK
BT_BCLK
3.3V
3.3V
PVDD
PVDD
PVDD
PVDD
A
3.3V
A
3.3V
3.3V
3.3V
MCLK
6,8,9
BCLK
6,8,9
LRCK
6,8,9
ADC_DATA
8
MCU_DATA
6
I2S_SW
6
I2S_SW1
6
AMP_SDA
6
AMP_SCL
6
PDN
6
AMP_RST
6
BT_DATA
7
BT_LRCK
7
BT_BCLK
7
FB11
500/200mA
FB11
500/200mA
R487
0
R487
0
C154
0.47uF/25V/Y5V
C154
0.47uF/25V/Y5V
C136
100pF/50V/NP0
C136
100pF/50V/NP0
C157
6.8pF/50V/NP0
C157
6.8pF/50V/NP0
R488
0
R488
0
R178
470
R178
470
FB21
100/1.5A
FB21
100/1.5A
C115
100pF/50V/NP0
C115
100pF/50V/NP0
U16
TAS5707
U16
TAS5707
OUT_A
1
PVDD_A
2
PVDD_A
3
BST_A
4
GVDD_OUT
5
SSTIMER
6
OC_ADJ
7
NC
8
AVSS
9
PLL_FLTM
10
PLL_FKTP
11
VR_ANA
12
AVDD
13
/FAULT
14
MCLK
15
OSC_RES
16
DVSSO
17
VR_DIG
18
/PDN
19
LRCLK
20
SCLK
21
SDIN
22
SDA
23
SCL
24
/RESET
25
STEST
26
DVDD
27
DVSS
28
GND
29
AGND
30
VREG
31
GVDD_OUT
32
BST_D
33
PVDD_D
35
OUT_D
36
PGND_CD
37
PGND_CD
38
OUT_C
39
PVDD_C
40
PVDD_C
41
BST_C
42
BST_B
43
PVDD_B
44
PVDD_D
34
PVDD_B
45
OUT_B
46
PGND_AB
47
PGND_AB
48
L4
10uH/2A
L4
10uH/2A
R486
0
R486
0
C74
0.1uF/25V/Y5V
C74
0.1uF/25V/Y5V
C106
4700pF/50V/X7R
C106
4700pF/50V/X7R
R188
4.7K
4.7K
R188
4.7K
4.7K
C148
NC/100pF/50V/NP0
C148
NC/100pF/50V/NP0
C117
100pF/50V/NP0
C117
100pF/50V/NP0
+
CE20
100uF/25V
+
CE20
100uF/25V
R180
3.3
3.3
R180
3.3
3.3
C109
0.033uF/50V/Y5V
C109
0.033uF/50V/Y5V
R489
0
R489
0
R479
33
R479
33
C128
0.1uF/25V/X7R
C128
0.1uF/25V/X7R
C137
0.1uF/25V/X7R
C137
0.1uF/25V/X7R
C112
0.47uF/25V/Y5V
C112
0.47uF/25V/Y5V
C133
0.1uF/25V/X7R
C133
0.1uF/25V/X7R
C127
0.47uF/25V/Y5V
C127
0.47uF/25V/Y5V
FB19
100/1.5A
FB19
100/1.5A
C159
100pF/50V/NP0
100pF/50V/NP0
C159
100pF/50V/NP0
100pF/50V/NP0
C123
0.1uF/25V/X7R
C123
0.1uF/25V/X7R
C130
0.033uF/50V/Y5V
C130
0.033uF/50V/Y5V
C122
0.033uF/50V/Y5V
C122
0.033uF/50V/Y5V
C107
0.047uF/50V/Y5V
C107
0.047uF/50V/Y5V
R481
33
R481
33
C118
0.1uF/25V/Y5V
C118
0.1uF/25V/Y5V
R189
3.3
3.3
R189
3.3
3.3
+
CE19
100uF/25V
100uF/25V
+
CE19
100uF/25V
100uF/25V
R108
0
R108
0
C155
0.47uF/25V/Y5V
C155
0.47uF/25V/Y5V
C129
0.01uF/50V/Y5V
C129
0.01uF/50V/Y5V
TP59
TP59
R137
NC/10K
NC/10K
R137
NC/10K
NC/10K
C124
0.1uF/25V/Y5V
C124
0.1uF/25V/Y5V
C119
0.1uF/25V/X7R
C119
0.1uF/25V/X7R
FB20
100/1.5A
FB20
100/1.5A
C149
0.1uF/25V/Y5V
C149
0.1uF/25V/Y5V
C77
0.1uF/16V/X7R
C77
0.1uF/16V/X7R
L5
10uH/2A
L5
10uH/2A
TP21
TP21
C135
100pF/50V/NP0
C135
100pF/50V/NP0
XP11
4PIN/2.0mm
XP11
XP11
4PIN/2.0mm
1
1
2
2
3
3
4
4
C116
0.01uF/50V/Y5V
C116
0.01uF/50V/Y5V
C
131
0.
1uF/
25V/
X7R
C
131
0.
1uF/
25V/
X7R
TP20
TP20
C236
0.1uF/25V/Y5V
C236
0.1uF/25V/Y5V
FB24
500/200mA
FB24
500/200mA
R
179
22.
1K/
1%
R
179
22.
1K/
1%
U10
74LVC1G3157GV
74LVC1G3157GV
U10
74LVC1G3157GV
74LVC1G3157GV
B2
1
GND
2
B1
3
A
4
S
6
VCC
5
R187
3.3
3.3
R187
3.3
3.3
L3
10uH/2A
L3
10uH/2A
L2
10uH/2A
L2
10uH/2A
R177
470
R177
470
FB22
100/1.5A
FB22
100/1.5A
+
CE17
100uF/25V
100uF/25V
+
CE17
100uF/25V
100uF/25V
R480
33
R480
33
C134
0.1uF/25V/Y5V
C134
0.1uF/25V/Y5V
C121
0.01uF/50V/Y5V
C121
0.01uF/50V/Y5V
R185
200/1%
R185
200/1%
C138
0.01uF/50V/Y5V
C138
0.01uF/50V/Y5V
R485
0
R485
0
+
CE21
100uF/25V
100uF/25V
+
CE21
100uF/25V
100uF/25V
C120
0.033uF/50V/Y5V
C120
0.033uF/50V/Y5V
C108
0.047uF/50V/Y5V
C108
0.047uF/50V/Y5V
C111
0.
1uF/
25V/
X7R
C111
0.
1uF/
25V/
X7R
SN74CBTLV3257DGVR
U19
SN74CBTLV3257DGVR
U19
S
1
1B1
2
1B2
3
1A
4
2B1
5
2B2
6
2A
7
GND
8
3A
9
3B2
10
3B1
11
4A
12
4B2
13
4B1
14
O/E/
15
Vcc
16
C110
0.1uF/25V/X7R
C110
0.1uF/25V/X7R
R482
33
R482
33
R59
0
R59
0
C140
NC/100pF/50V/NP0
C140
NC/100pF/50V/NP0
C288
10uF/10V/Y5V
C288
10uF/10V/Y5V
R182
0
R182
0
C161
0.1uF/25V/Y5V
C161
0.1uF/25V/Y5V
C
113
N
C
/2200pF/
50V/
X7R
C
113
N
C
/2200pF/
50V/
X7R
R183
3.3
3.3
R183
3.3
3.3
C126
0.1uF/25V/X7R
C126
0.1uF/25V/X7R
R181
4.7K
R181
4.7K
C238
0.1uF/25V/Y5V
0.1uF/25V/Y5V
C238
0.1uF/25V/Y5V
0.1uF/25V/Y5V
R892
470
R892
470
C105
4700pF/50V/X7R
C105
4700pF/50V/X7R
C
132
1uF/
16V/
Y5V
C
132
1uF/
16V/
Y5V
C
114
1uF/
16V/
Y5V
C
114
1uF/
16V/
Y5V
C
125
4.
7uF/
16V/
Y5V
C
125
4.
7uF/
16V/
Y5V
+
CE14
47uF/10V
47uF/10V
+
CE14
47uF/10V
47uF/10V
R184
18K/1%
R184
18K/1%
R130
10k
R130
10k
C147
10uF/10V/Y5V
10uF/10V/Y5V
C147
10uF/10V/Y5V
10uF/10V/Y5V
7-5
7-5
Main Board Circuit Diagram:AMP
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