SB 350 (serv.man4) - JBL Audio Service Manual (repair manual). Page 44

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1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D
D
C
C
B
B
A
A
Title
Number
Revision
Size
A3
Date:
6/12/2014
Sheet    of
File:
D:\Data (D)\..\SB350_Main_Board_Sheet05_Power_P1.SchDoc
Drawn By:
BOOT
1
VIN
2
EN
3
SS
4
VSENSE
5
COMP
6
GND
7
PH
8
Po
w
er
PA
D
9
U456
TPS54231DDA
R470
332K
R473
NA
R475
1.91K
C483
47PF
C488
1800PF
2.5A
1.5A
R472
21K
1%
R474
47K
R466
22 OHM
C472
470PF
C484
10UF
C480
33UF
R468
384
1
2
L458
15UH
GND
GND
GND
GND
GND
+5V
C458
10UF
GND
C461
10UF
DV3.3V
250mA
L46
0
U
P
Z201
2E3
31-
2R
5T
F
L452
UPZ2012E331-2R5TF
SB350 Main Board
  Power_Part
7
5
+24V
+3.3V_STB
C473
10UF
C474
10UF
C476
100NF
3V3_BT
3V3_MCU
3V3_STB
GND
MP1
+5V
+
C462
47UF
L451
UPZ2012E331-2R5TF
/(30mA/ 6mA)
/(107.5mA/ 13mA)
D451
SS24T3G
+5V_STB
R476 1M
R469
120K
1
3
2
Q452
AP2305AGN
GND
R467
NM
1
3
2
Q453
MMBT3904
D450
NM
R
46
3
56
0
R
46
4
70
0
R465
220
GND
GND
R477
NM
C491
NM
DV3.3V
+5V_STB
3V3_MCU
3V3_STB
G
N
D
/A
D
J
1
VOUT
2
VIN
3
VOUT
4
U454
LM1117MPX_SOT223
R461 22K
GND
1
3
2
Q451
MMBT3904
R462
56K
R460
10K
GND
+5V_STB
+3.3V_STB
GND
GND
R456
47K
DV+1.2V
DV3.3V
VIN
1
VSS
2
EN
3
NC
4
VOUT
5
U455
G9091-330T11U
GND
+24V
C464
4.7UF
1
2
L450
BLM18BD471SN1
GND
PVCC
PGND
1
2
L456
BLM18BD471SN1
1
2
L459
BLM18BD471SN1
1
2
L461
BLM18BD471SN1
DV3.3V
C470
10UF
C471
100NF
1
2
L454
BLM18BD471SN1
1
2
L455
BLM18BD471SN1
GND
DDV+3.3V
DCV+3.3V
A
D
J/G
N
D
1
OUT
2
IN
3
OUT
4
U453
AZ1117H-1.2V-5.0TRE1
DDV+3.3V
DCV+3.3V
DV+1.2V
PVCC
+24V
1
2
L453
NM
PRE+3.3V
L457
UPZ2012E331-2R5TF
+5V
STANDBY
STANDBY
1
2
3
4
CON450
CON 4 POL PITCH 3.96MM
C467
4.7UF
C468
4.7UF
C451
100NF
C455
100NF
C477
100NF
C481
100NF
C459
100NF
C460
100NF
C463
100NF
C466
100NF
C469
100NF
C482
100NF
C487
100NF
C465
10UF
C450
22UF
C490
22NF
C475
1UF
+
10V
C478
100UF
R471
10K
50V
C457
10nF
50V
C492
10nF
+
25V
C452
47UF
+
25V
C489
47UF
4
1
3
7
5
6
2
8
U451
MEP4435Q8

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