Read JBL SB 350 (serv.man4) Service Manual online
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Title
Number
Revision
Size
A3
Date:
6/12/2014
Sheet of
File:
D:\Data (D)\..\SB350_Main_Board_Sheet03_BCO.SchDoc
Drawn By:
SB350 Main Board
connector part
connector part
7
3
MP1
GND
GND
LED_BT
STEREO_LED
LED_POWER_ON
LED_POWER_OFF
LED_POWER_OFF
R236
28.7K
28.7K
R235
NM
NM
R239
100
100
GND
C230
100NF
100NF
+3.3V_STB
LED_POWER_OFF
GND
GND
3V3_BT
BT_DP1
BT_DN1
UART_TX_BT
UART_RX_BT
R221
0
RESET_BT
SPDIF_BT
R222
0
R228
33
R230
33
R231
33
R232
0
R219
33
R220
33
R240
33
R241
33
R243
33
R245
33
R246
33
R249
33
R251
33
R252
33
R253
33
R254
33
R255
33
LED_VOL-
LED_VOL+
LED_VOL+
LED_HDMI
LED_OPTICAL
LED_AUX
KEY_ADC
KEY_POWER
SURROUND_LED
CEC_IN
CEC_OUT
LED_POWER_OFF
1
2
3
2
3
J201
B 3B-ZR
+3.3V_STB
GND
IR_IN
GND
3V3_STB
+5V
ADC_AINR-
ADC_AINR+
ADC_AINL-
ADC_AINL+
R247
0
SPDIF_IN_DET
AUX_IN_DET
HDMI_CEC_M
HDMI_SPDIF
HDMI_MUTEOUT
Codec_DAI_LRCK
DSP_DAO_D1
Codec_DAI_SCLK
HDMI_CSDA
HDMI_CSCL
HDMI_RESET
HDMI_INT
GND
+5V_STB
R208
33
R210
33
R211
33
R212
33
R213
33
R214
33
R215
33
R216
33
R217
33
R218
33
R203
33
TX0_HPD
R200
33
HDMI_STB
R234
33
Codec_DAI_SCLK
GND
C202
100NF
C205
100NF
R206
33
R204
33
R201
33
C
20
6
10
0N
F
C207
100NF
C
20
8
10
0N
F
+3.3V_STB
+5V_STB
R256
33
C237
100NF
C236
100NF
OPTICAL_IN
R202
0
R205
0
R207
0
R209
0
USB_D-
USB_D+
USB_D+
EQ_SWITCH
+3.3V_STB
+5V_STB
+5V_STB
HDMI_CEC_M
D200
NM
D201
RB751V-40
GND
PRE+3.3V
R227
NM
R229
NM
AOUT_SUBPRE+(T_L+)
AOUT_SUBPRE-(T_L-)
AOUT_SUBPRE-(T_L-)
HDMI_MUTEOUT
CODEC_MUTE
AMP_Mute
CODEC_MUTE
AMP_Mute
Codec_DAI_LRCK
DSP_DAO_D2
U2RX
U2TX
BT_DP1
BT_DN1
LINK_LED
PAIR_SW
LINK_LED
PAIR_SW
PAIR_SW
TX_MUTE
R242
33
R248
33
OPT
SPDIF_DET
AINL-
AINL+
AINR+
AINR-
AUX_DET
MCU_D-
MCU_D+
EQ
+3.3V_STB3
+5V_STB3
PRE+3.3V
H_MUTE
C_MUTE
A_MUTE
SUBPRE+(
SUBPRE-(
HDMISTB
HPD
Codec_SCLK1
Codec_LRCK1
DSP_D1
MUTE
CEC
SPDIF
CSDA
CSCL
H_RESET
H_INT
RX_BT
TX_BT
TX_BT
Codec_LRCK
Codec_SCLK
DSP_D2
BT_DN1
BT_DP1
SPDIF_BT
RESET_BT
TX_MUTE
PAIR_SW
LINK_LED
LINK
PAIR
3V3_BT
BT_DN
BT_DP
U2TX
U2TX
U2RX
STEREO
STEREO
SURROUND
KEY_ADC
AUX
KEY_POWER
KEY_POWER
OPTICAL
BT
HDMI
VOL-
VOL+
POWER_ON
POWER_OFF
IR_IN
GND1
+3.3V_STB2
+5V_STB2
GND2
3V3_STB1
G
N
D
3
+5V_STB4
Charge CTRL
1
2
L200
BLM18BD471SN1
1
2
L201
BLM18BD471SN1
1
2
L205
BLM18BD471SN1
1
2
L206
BLM18BD471SN1
1
2
L204
BLM18BD471SN1
L203
MPZ2012S331A
R320
33
R322
33
R323
33
R321
33
1
2
L20
7
B
LM
1
8B
D
471
SN
1
+3.3V_STB
CHARGE
R331
100
R332
100
U2RX
U2TX
U2TX
U2RX
U2TX
U2TX
U2TX
U2RX
U2RX
C200
10PF
10PF
C201
10PF
10PF
C203
10PF
C204
10PF
C
20
9
10
PF
C
21
0
10
PF
C
21
1
10
PF
C
21
2
10
PF
C
21
3
10
PF
C
21
4
10
PF
C
21
5
10
PF
C218
10PF
C219
10PF
C220
10PF
C221
10PF
C222
10PF
C223
10PF
C224
10PF
C225
10PF
C226
10PF
C227
10PF
C340
10PF
C341
10PF
C231
10PF
C243
100PF
C247
10PF
C
33
1
10
PF
C
33
5
10
PF
C
33
6
10
PF
C
33
0
N
M
C
33
2
N
M
C
33
3
N
M
C
33
4
N
M
C232
4.7UF
C240
100PF
C241
NM
C242
100PF
C244
100PF
C245
100PF
C246
100PF
C248
100PF
C249
100PF
C250
100PF
C251
100PF
C252
100PF
C254
100PF
C255
100PF
C256
100PF
C257
100PF
C258
100PF
C259
100PF
1
3
2
Q200
MMBT3904
R237
10K
10K
R238
100K
R325
33
IR_IN
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
16
16
17
17
18
18
19
19
20
20
TH
ER
M
A
L PA
D
0
CON200
1014A0-020P
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
SHIED
0
CON201
FFC_11PIN_1.0MM Bottom Contact
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
16
16
17
17
18
18
19
19
SHIED
0
CON202
FFC,19PIN,0.5MM Bottom Contact
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
16
16
17
17
18
18
19
19
SHIED
0
CON205
FFC,19PIN,0.5MM Bottom Contact
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
16
16
17
17
18
18
19
19
20
20
SHIED
0
CON203
FFC,20PIN,0.5MM Bottom Contact
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
SHIED
0
J202
FFC,14PIN,0.5MM Bottom Contact
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
SHIED
0
J204
FFC,14PIN,0.5MM Bottom Contact
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
16
16
17
17
18
18
19
19
20
20
TH
ER
M
A
L PA
D
0
CON206
1014A0-020P
STEREO_LED1
SURROUND_LED1
KEY_ADC1
LED_AUX1
KEY_POWER1
LED_OPTICAL1
LED_BT1
LED_HDMI1
LED_VOL-1
LED_VOL+1
LED_POWER_ON1
LED_POWER_OFF1
+3.3V
+5V_STB2
SURROUND_LED1
KEY_ADC1
LED_AUX1
KEY_POWER1
LED_OPTICAL1
LED_BT1
LED_HDMI1
LED_VOL-1
LED_VOL+1
LED_POWER_ON1
LED_POWER_OFF1
+3.3V
+5V_STB2
BT_DN
BT_DP
U2TX1
U2RX1
BT_DP
U2TX1
U2RX1
GND
STEREO_LED1
SURROUND_LED1
KEY_ADC1
LED_AUX1
KEY_POWER1
LED_OPTICAL1
LED_BT1
LED_HDMI1
LED_VOL-1
LED_VOL+1
LED_POWER_ON1
+3.3V
+5V_STB2
BT_DN
BT_DP
U2TX1
U2RX1
LED_POWER_OFF1
1
2
3
4
2
3
4
SHID
0
CON204
FFC 4pin 1.0MM Bottom Contact
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
SHIED
0
J203
FFC,9PIN,0.5MM
U2RX_1
U2TX_1
U2TX_1
IR-IN
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