Read JBL BD 300 (serv.man2) Service Manual online
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
behind of Caps
1.2A
(pin to pin with G5627)
behind of Caps
AIM 1.2V: 0.8*(7.87+15)/15=1.22V
DC Current: 4.1A
Saturation Current: 6.4A
DC resistor: 15mOHM
1.1V
POWER
POWER
AIM 1.15V: 0.8*(6.65+15)/15=1.155V
Close to DC-DC
(pin to pin with G5627)
100MA(Max)
close to DC/DC
close to LDO
close to IC
᭮൘
TOPቲ
E
B
2
2N3904
C
1
VCC R/R to Q3.b
5.000V 0.772V
4.532V 0.700V
3.885V 0.600V
3.237V 0.500V
3
A03407
ASM3403
SMPS 5V 12V -24V are always exist;
MCU STBY_3.3V is alwayls exist;
First 1.1V controled by MCU using PCON;
Second is VCC-D 12V-D controled by 1.1V;
Third is 3.3V 1.5V controled by VCC-D
MCU STBY_3.3V is alwayls exist;
First 1.1V controled by MCU using PCON;
Second is VCC-D 12V-D controled by 1.1V;
Third is 3.3V 1.5V controled by VCC-D
310mA
Max 0.5A
behind of Caps
max 0.5A+0.31A+0.3A
(pin to pin with G5627)
change LDO to DCDC, cancel 3.3VRESET#
2A max output
-24V
EN
EN
1.1V_FB
1.1V_FB
MCU_PCON
RESET#
EN
MCU_PCON
FE_RES
VCC_D
A1.2V
1.2V
VCC
1.5V
1.1V
VCC
VCC_D
1.1V
+12V
+12V
+12V_D
VCC
1.1V
VCC
3.3V_STBY
3.3V
3.3V_STBY
VCC_D
VCC_D
-24V
+12V
VCC
STBY_3V3
D3.3V
A3.3V
VCC
3.3V
-24V
+12V_D
P-24V
RESET_
2,7
FE_RES
2,8
MCU_PCON
8
RESET_
2,7
FE_RES
2,8
XP1
8PIN/2.5mm
XP1
8PIN/2.5mm
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
ZD4
ZMM27/27V
ZD4
ZMM27/27V
C392
0.1uF/25V/Y5V
C392
0.1uF/25V/Y5V
C45
0.1uF/25V/Y5V
C45
0.1uF/25V/Y5V
R6
1.2K/1%
R6
1.2K/1%
C316
0.1uF/25V/Y5V
C316
0.1uF/25V/Y5V
C23
0.1uF/25V/Y5V
C23
0.1uF/25V/Y5V
C41
0.1uF/25V/Y5V
C41
0.1uF/25V/Y5V
C321
0.022uF/50V/Y5V
C321
0.022uF/50V/Y5V
D5V1D5V1
C325
0.1uF/25V/Y5V
C325
0.1uF/25V/Y5V
R296
20K
20K
R296
20K
20K
R8
10
R8
10
Q209
P_A03407
Q209
P_A03407
G
D
S
C20
22uF/10V/Y5V
C20
22uF/10V/Y5V
C7
0.1uF/25V/Y5V
C7
0.1uF/25V/Y5V
R365
2.2K
R365
2.2K
C5
10uF/10V/Y5V
C5
10uF/10V/Y5V
+
100uF/16V
CE6
+
100uF/16V
CE6
Q208
NPN_3DG3904M
Q208
NPN_3DG3904M
U1
AT1529
U1
AT1529
VCC
1
REF
2
GND
3
FB
4
EN
5
PGND
6
LX
7
VIN
8
TP
9
GND3GND3
C401
22uF/10V/Y5V
C401
22uF/10V/Y5V
C9
0.1uF/25V/Y5V
C9
0.1uF/25V/Y5V
R25
0
R25
0
C3
0.1uF/25V/Y5V
C3
0.1uF/25V/Y5V
U3
AT1526
U3
AT1526
VCC
1
REF
2
GND
3
FB
4
EN
5
PGND
6
LX
7
VIN
8
TP
9
C318
0.022uF/50V/Y5V
C318
0.022uF/50V/Y5V
FB23
10/2A
FB23
10/2A
C393
0.022uF/50V/Y5V
C393
0.022uF/50V/Y5V
R300
15K
15K
R300
15K
15K
C389
0.1uF/25V/Y5V
C389
0.1uF/25V/Y5V
C17
NC/22uF/10V/Y5V
C17
NC/22uF/10V/Y5V
R1032
1K
R1032
1K
R23
100
R23
100
C313
0.1uF/25V/Y5V
C313
0.1uF/25V/Y5V
C11
2.2uF/10V/Y5V
C11
2.2uF/10V/Y5V
C301
1uF/10V/Y5V
C301
1uF/10V/Y5V
R302
2.7K
2.7K
R302
2.7K
2.7K
VCC2VCC2
C326
0.1uF/25V/Y5V
C326
0.1uF/25V/Y5V
C8
22uF/10V/Y5V
C8
22uF/10V/Y5V
R32
10K
R32
10K
R303
3.3K
3.3K
R303
3.3K
3.3K
C299
0.1uF/25V/Y5V
C299
0.1uF/25V/Y5V
R295
100K
R295
100K
L1
2.2uH/3A
L1
2.2uH/3A
R301
100
R301
100
C30
0.1uF/25V/Y5V
C30
0.1uF/25V/Y5V
C26
10uF/10V/Y5V
C26
10uF/10V/Y5V
C29
0.1uF/25V/Y5V
C29
0.1uF/25V/Y5V
C396
0.1uF/25V/Y5V
C396
0.1uF/25V/Y5V
R2
5.6K/1%
R2
5.6K/1%
R1
10
R1
10
C327
22uF/10V/Y5V
C327
22uF/10V/Y5V
R602
1K
R602
1K
+
CE5
100uF/10V
+
CE5
100uF/10V
Q207
P_ASM3403
Q207
P_ASM3403
G
D
S
R20
15K/1%
R20
15K/1%
Q1
NPN_3DG3904M
Q1
NPN_3DG3904M
C12
4.7uF/16V/Y5V
C12
4.7uF/16V/Y5V
L3
2.2uH/3A
L3
2.2uH/3A
R293
10K
10K
R293
10K
10K
C46
0.1uF/25V/Y5V
C46
0.1uF/25V/Y5V
R15
13K/1%
13K/1%
R15
13K/1%
13K/1%
R526
30K
30K
R526
30K
30K
R12
20K
R12
20K
R21
3.3K
R21
3.3K
R524
1.8k
1.8k
R524
1.8k
1.8k
U2
G9091-330T11U
SOT-25/SMD
U2
G9091-330T11U
SOT-25/SMD
VIN
1
GND
2
EN
3
NC
4
VOUT
5
+12V+12V
C324
0.1uF/25V/Y5V
C324
0.1uF/25V/Y5V
C298
0.022uF/50V/Y5V
C298
0.022uF/50V/Y5V
C388
22uF/10V/Y5V
C388
22uF/10V/Y5V
R280
1K
R280
1K
FB21
10/2A
FB21
10/2A
R294
1K
1K
R294
1K
1K
U15
AT1529
U15
AT1529
VCC
1
REF
2
GND
3
FB
4
EN
5
PGND
6
LX
7
VIN
8
TP
9
Q150
NPN_3DG3904M
Q150
NPN_3DG3904M
R292
100K
R292
100K
R17
10K
R17
10K
R43
10
R43
10
Q2
NPN_3DG3904M
Q2
NPN_3DG3904M
R307
20K
20K
R307
20K
20K
C4
0.1uF/25V/Y5V
C4
0.1uF/25V/Y5V
R4
15K/1%
15K/1%
R4
15K/1%
15K/1%
C25
2.2uF/10V/Y5V
C25
2.2uF/10V/Y5V
R928
560
560
R928
560
560
L9
2.2uH/3A
L9
2.2uH/3A
C43
0.1uF/25V/Y5V
C43
0.1uF/25V/Y5V
Q6
NPN_3DG3904M
Q6
NPN_3DG3904M
C2
0.1uF/25V/Y5V
C2
0.1uF/25V/Y5V
C323
0.1uF/25V/Y5V
C323
0.1uF/25V/Y5V
R371
10K
R371
10K
C459 10uF/10V/Y5V
C459 10uF/10V/Y5V
R19
2.7K
R19
2.7K
Q5
NPN_3DG3904M
Q5
NPN_3DG3904M
C399
0.1uF/25V/Y5V
C399
0.1uF/25V/Y5V
R320
4.7K
R320
4.7K
R5
15K/1%
15K/1%
R5
15K/1%
15K/1%
R525
10K/1%
10K/1%
R525
10K/1%
10K/1%
C400
0.1uF/25V/Y5V
C400
0.1uF/25V/Y5V
RST
RST
Main Board Circuit Diagram:POWER
7-6
7-6
JBL
SB 300 Service Manual
Page 29 of 41
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