Read JBL SB 250 (serv.man3) Service Manual online
BOOT
1
VIN
2
EN
3
SS
4
PH
8
GND
7
COMP
6
VSNS
5
U456
TPS54231DDA
R473
NA
R474
47K
R470
332K
C490
22NF
C487
100NF
C484
10UF
L460
UPZ2012E331-2R5TF
D451
SS24T3G
L458
15UH
C477
100NF
C481
100NF
C480
33UF
+
C478
100UF
R468
384
R471
10K
R475
1.91K
R472
21K
C488
1800PF
L457
UPZ2012E331-2R5TF
1
3
2
Q452
AP2305AGN
C482
100NF
R469
120K
Q453
MMBT3904
C492
10NF
R477
NM
R476
1M
R466
22 OHM
C472
470PF
1
2
2
CON450
CON2
C455
100NF
R456
47K
R460
10K
S
1
S
2
S
3
G
4
D
5
D
6
D
7
D
8
U451
MEP4435Q8
Q451
MMBT3904
R462
NM
C457
10NF
R461
22K
C450
22UF
C451
100NF
+
C452
47UF
VIN
1
VSS
2
EN
3
NC
4
VOUT
5
U455
G9091-330T11U
C467
4.7UF
C468
4.7UF
ADJ/
GND
1
OUT
2
IN
3
OUT
4
U453
AZ1117H-1.2V-5.0TRE1
C463
100NF
C464
4.7UF
L450
BLM18BD471SN1
C465
10UF
C466
100NF
GND/
ADJ
1
VOUT
2
VIN
3
VOUT
4
U454
LM1117MPX_SOT223
C469
100NF
C459
100NF
C458
10UF
R463
560
R464
700
R465
220
+
C462
47UF
C460
100NF
C461
10UF
L451
UPZ2012E331-2R5TF
C471
100NF
C470
10UF
L454
BLM18BD471SN1
L455
BLM18BD471SN1
C475
1UF
C473
10UF
L456
BLM18BD471SN1
L459
BLM18BD471SN1
L461
BLM18BD471SN1
C476
100NF
C474
10UF
C483
47PF
C491
NM
STANDBY
PVCC
+24V
DV3.3V
+5V
+3.3V_STB
DV3.3V
DCV+3.3V
DDV+3.3V
3V3_BT
3V3_MCU
+5V
+5V_STB
+24V
L452
UPZ2012E331-2R5TF
DV+1.2V
DV3.3V
R314
1K@100MHz
R313
1K@100MHz
R312
1K@100MHz
R311
1K@100MHz
R306
1K@100MHz
R291
1K@100MHz
R289
0R
R282
0R
R250
0R
R248
0R
SGND
IC-TEST
IR_IN
SGND
NC
+3V3
PAIR_SW
LINK_LED
EQ_SW
USB_D+
USB_D-
+5V_A
AUX_IN DET
ICT_TEST
+5V_C
+5V_C
ADC_AINR-
ADC_AINR-
ADC_AINR+
ADC_AINR+
ADC_AINL+
ADC_AINL+
ADC_AINL-
ADC_AINL-
SPDIF_DET
OPTICAL_IN
OPTICAL_IN
+3V3_A
SGND
+5V
+3.3V_STB
LED_POWER_OFF
LED_POWER_ON
LED_VOL+
LED_VOL-
LED_HDMI
LED_BT
LED_OPTICAL
KEY_POWER
LED_AUX
KEY_ADC
STEREO_LED
SURROUND_LED
U2RX
SGND
+24V
U2TX
BT_DP1
BT_DN1
3V3_STB
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
11
12
13
14
15
16
17
18
19
20
21
22
CON206
FFC,20PIN,0.5MM Bottom Contact
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J204
FFC,14PIN,0.5MM Bottom Contact
R202
0
R205
0
R207
0
R209
0
R240
33
R241
33
R243
33
R245
33
R246
33
R249
33
R251
33
R252
33
R253
33
R254
33
R255
33
R256
33
L205
B
L
M18B
D
471SN
1
L206
BLM18BD471SN1
C200
10PF
10PF
C203
10PF
C201
10PF
10PF
C204
10PF
10PF
C254
100PF
100PF
C248
100PF
C255
100PF
C249
100PF
C256
100PF
C250
100PF
C257
100PF
C251
100PF
100PF
C258
100PF
C252
100PF
C259
100PF
100PF
C236
100NF
C237
100NF
100NF
+5V_STB
+3.3V_STB
LED_POWER_OFF
LED_POWER_ON
LED_VOL+
LED_VOL-
LED_HDMI
LED_BT
LED_OPTICAL
KEY_POWER
LED_AUX
KEY_ADC
SURROUND_LED
STEREO_LED
U2RX
U2TX
BT_DP1
BT_DN1
C247
220PF
C246
220PF
C245
220PF
C244
220PF
C243
220PF
C242
100PF
100PF
C241
NM
NM
C240
100PF
AUX_IN_DET
R247
1K@100MHz
+5V
ADC_AINR-
ADC_AINR+
ADC_AINL+
ADC_AINL-
SPDIF_DET
OPTICAL_IN
+3.3V_STB
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
11
CON201
FFC
_11PI
N
_1.0MM B
o
ttom C
o
nt
act
R201
33
R204
33
R206
33
C207
100NF
C206
100NF
100NF
C208
100NF
100NF
C335
10PF
10PF
C336
10PF
L201
BLM18BD471SN1
L200
BLM18BD471SN1
C202
100NF
100NF
C205
100NF
100NF
+5V_STB
USB_D-
USB_D+
EQ_SWITCH
LINK_LED
PAIR_SW
+3.3V_STB
2014-05-05
2014-01-10
STANDBY
+3.3V_STB
+5V_STB
R325
33
IR_IN
L263
1K @ 100MHz
L264 1K @ 100MHz
USB_D-_B
USB_D+_B
C1
2
2
0.1uF
C1
3
3
0.1uF
C1
4
4
0.1uF
R317
1K@100MHz
2015-06-23
OPTIC_ST-BY
2015-06-23
OPTIC_ST-BY_B
R318
1000PF
2015-07-28
2015-07-28
2015-07-28
aux
main
2015-07-28
2015-07-28
2015-07-28
2015-07-29
SCHEMATIC DIAGRAM - DC-DC PART
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