Read JBL SB 250 (serv.man3) Service Manual online
SCHEMATIC DIAGRAM - SUB PART 2
1
3
2
Q100
MMBT3904
MMBT3904
4
1
3
7
5
6
2
8
U100
AP4435GM
STANDBY
R100
10K
R101
10K
R103
10K
R104
10K
10K
AMP POWER SUPPLY
C101
100NF
C102
100NF
100NF
C107
100NF
100NF
TP100
TP101
POWER SUPPLY: 19V 3A share
1
2
3
4
2
3
4
CON100
CON 4 POL PITCH 3.96MM
1
2
3
4
L100
LCL-T14-2051
0.7mH@10KHz
+19V
PVDD
+ C100
470UF
25V
25V
+19V
GND
STANDBY
STANDBY
( Page 2)
BOOT
1
VIN
2
EN
3
SS
4
VSENSE
5
COMP
6
GND
7
PH
8
Pow
er
P
A
D
9
U102
TPS54231DDA
C122
22NF
22NF
R112
10.0K
1%
10.0K
1%
R116
3.24 K
1%
3.24 K
1%
C118
1800PF
1.5A
R108
220
R110
383
1%
383
1%
1
2
L102
15UH
L
103
MPZ2012S331A
+19V
D101
SS24T3G
SS24T3G
+5V
+
C111
100UF
10V
+
C112
100UF
10V
R109
0
TP106
TP105
C115 47PF
C121
100NF
C110
100NF
50V
100NF
50V
R113
21K
C114
100NF
TP107
C116
4.7UF
C117
4.7UF
+
C120
100UF
25V
+ C119
10UF
25V
25V
C113
10UF
16V
C123
NM
NM
C109
390PF
R115
NM
R111
332K
332K
R114
47K
1%
47K
1%
+5V
+3.3V_STB
L101
MPZ2012S331A
C105
10UF
C108
NC
NC
(335mA)
D100
0 OHM 0805
TP102
GND/
A
DJ
1
VOUT
2
VIN
3
VOUT
4
U101 NC
MCU POWER SUPPLY
C103
100NF
100NF
C104
100NF
100NF
C106
100NF
100NF
R102
NC
1%
NC
1%
R105
NC
NC
TP103
T
P
104
R107
NC
2014-04-21
2014-04-21
2014-04-21
2014-04-5
2014-04-28
2014-04-28
2014-04-28
2014-04-28
PAIR_SW
PHASE_SW
R305
10K
10K
R300
10K
10K
+3.3V_STB
+3.3V_STB
1
3
2
4
SW300
TC-1101
SHIED
0
2
1
3
3
CON300
SS-12F41
LINK_LED
1
3
2
Q302
MMBT3904
MMBT3904
R309
10K
R306
1K
1K
D300
BLUE
+5V
C301
1000PF
1000PF
C302
1000PF
1000PF
2
3
1
Q300
MMBT3906
2
3
1
Q301
MMBT3906
AR
CC
AG
D301
WHITE/AMBER
WHITE/AMBER
+5V
STB_LED
POWER_LED
R303
1K
R301
10K
10K
R302
10K
10K
R304
1K
R307
1K
1K
R308
1K
1K
C303
1000PF
1000PF
C304
1000PF
1000PF
2014-04-21
2014-04-21
2014-04-21
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