Read Harman Kardon BDS 270 Service Manual online
A
A
B
B
C
C
D
E
4
4
3
3
2
2
1
䆑
AC power offǂǂRSTIȦVCORE 1.1Vǂ༨
Internal MCU Use U2
External MCU Use R7
behind of Caps
1.2A
(pin to pin with G5627) ৠℹ 3.2A ᳝ⳕ⬉ᓣ
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
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) ৠℹ 3.2A ᳝ⳕ⬉ᓣ
100MA(Max)
close to DC/DC
close to LDO
close to IC
RESET
CIRCUIT
CIRCUIT
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
5.000V 0.772V
4.532V 0.700V
3.885V 0.600V
3.237V 0.500V
3
A03407
135MA
1.57A FOR BD
146MA
2A FOR 2D BD
557MA
135MA FOR BD
58MA(BD)
89MA FOR BD
125MA FOR bd
behind of Caps
max 0.5A+0.31A+0.3A
(pin to pin with G5627) ৠℹ 3.2A ᳝ⳕ⬉ᓣ
310mA
Max 0.5A
MAEࡴ
EN
EN
1.1V_FB
1.1V_FB
RESET#
OPWRSB
EN
OPWRSB
VCC
A3.3V
VCC_D
A1.2V
1.2V
VCC
1.5V
1.1V
+12V
1.1V
VCC
VCC
VCC_D
1.1V
+12V
+12V
+12V_D
VCC
1.1V
5V_STB
3.3V_STBY
3.3V
5V_STB
3.3V_STBY
VCC
3.3V
V3.3V
5V_STB
5V_STB
5V_STB
OPWRSB
7
RESET_
7
EN
9
R296
NC/20K
NC/20K
R296
NC/20K
NC/20K
R305
20K
20K
R305
20K
20K
R200
4.7K
R200
4.7K
C323
0.1uF/25V/Y5V
C323
0.1uF/25V/Y5V
TP1
TP1
R292
100K
R292
100K
R2
5.6K/1%
R2
5.6K/1%
R276
100
R276
100
R466
30K
30K
R466
30K
30K
C7
0.1uF/25V/Y5V
C7
0.1uF/25V/Y5V
+12V
+12V
R299
1K
R299
1K
R5
15K/1%
15K/1%
R5
15K/1%
15K/1%
C30
0.1uF/25V/Y5V
C30
0.1uF/25V/Y5V
R465
1.8k
1.8k
R465
1.8k
1.8k
C321
100pF/
50V/
N
P0
C321
100pF/
50V/
N
P0
U2
LDO_G9091-330T11U
U2
LDO_G9091-330T11U
VIN
1
GND
2
EN
3
NC
4
VOUT
5
R304
NC/33K
NC/33K
R304
NC/33K
NC/33K
R291
20K
20K
R291
20K
20K
C313
NC/0.1uF/25V/Y5V
C313
NC/0.1uF/25V/Y5V
Q208
NC/NPN_3DG3904M
NC/NPN_3DG3904M
Q208
NC/NPN_3DG3904M
NC/NPN_3DG3904M
Q207
P_ASM3403
Q207
P_ASM3403
G
D
S
U15
AT1526
U15
AT1526
VCC
1
REF
2
GND
3
FB
4
EN
5
PGND
6
LX
7
VIN
8
TP
9
R303
3.3K
3.3K
R303
3.3K
3.3K
C41
0.1uF/25V/Y5V
C41
0.1uF/25V/Y5V
C43
0.1uF/25V/Y5V
C43
0.1uF/25V/Y5V
C326
0.1uF/25V/Y5V
C326
0.1uF/25V/Y5V
R293
NC/10K
NC/10K
R293
NC/10K
NC/10K
FB18
10/2A
FB18
10/2A
R5
10K
R5
10K
R307
10K
R307
10K
C318
100pF/
50V/
N
P0
C318
100pF/
50V/
N
P0
R928
560
560
R928
560
560
Q206
NPN_3DG3904M
NPN_3DG3904M
Q206
NPN_3DG3904M
NPN_3DG3904M
R301
100
R301
100
C355
100pF/
50V/
N
P0
C355
100pF/
50V/
N
P0
+
100uF/16V
CE6
+
100uF/16V
CE6
Q5
NPN_3DG3904M
NPN_3DG3904M
Q5
NPN_3DG3904M
NPN_3DG3904M
C324
0.1uF/50V/X7R
C324
0.1uF/50V/X7R
Q3
NPN_3DG3904M
NPN_3DG3904M
Q3
NPN_3DG3904M
NPN_3DG3904M
C5
10uF/10V/Y5V
C5
10uF/10V/Y5V
C20
22uF/10V/Y5V
C20
22uF/10V/Y5V
R1
10
R1
10
C25
10uF/10V/Y5V
C25
10uF/10V/Y5V
Q1
NPN_3DG3904M
NPN_3DG3904M
Q1
NPN_3DG3904M
NPN_3DG3904M
R290
10K
10K
R290
10K
10K
C301
NC/1uF/25V/Y5V
C301
NC/1uF/25V/Y5V
R25
0
R25
0
C45
0.1uF/25V/Y5V
C45
0.1uF/25V/Y5V
R277
100
R277
100
C389
0.1uF/25V/Y5V
C389
0.1uF/25V/Y5V
R300
15K/1%
15K/1%
R300
15K/1%
15K/1%
R306
2.2K
R306
2.2K
U6
AT1526
U6
AT1526
VCC
1
REF
2
GND
3
FB
4
EN
5
PGND
6
LX
7
VIN
8
TP
9
R24
100
R24
100
GND2
GND2
R962
NC/0
R962
NC/0
FB23
10/2A
FB23
10/2A
C11
2.2uF/10V/Y5V
C11
2.2uF/10V/Y5V
VCC
VCC
R20
15K/1%
R20
15K/1%
R39
10
R39
10
Q2
NPN_3DG3904M
NPN_3DG3904M
Q2
NPN_3DG3904M
NPN_3DG3904M
R302
2.7K
2.7K
R302
2.7K
2.7K
C297
1uF/25V/Y5V
C297
1uF/25V/Y5V
C11
10uF/10V/Y5V
C11
10uF/10V/Y5V
C459
10uF/10V/Y5V
C459
10uF/10V/Y5V
C9
0.1uF/25V/Y5V
C9
0.1uF/25V/Y5V
R4
15K/1%
15K/1%
R4
15K/1%
15K/1%
L3
2.2uH/3A
L3
2.2uH/3A
R6
1.2K/1%
R6
1.2K/1%
R22
3.3K
R22
3.3K
R23
100
R23
100
R294
NC/1K
NC/1K
R294
NC/1K
NC/1K
R15
NC/100K
R15
NC/100K
+
470uF/6.3V
CE205
+
470uF/6.3V
CE205
C388
22uF/10V/Y5V
C388
22uF/10V/Y5V
5V_STB
5V_STB
C327
22uF/10V/Y5V
C327
22uF/10V/Y5V
R26
27k
R26
27k
C316
0.1uF/25V/Y5V
C316
0.1uF/25V/Y5V
R20
10K
R20
10K
C4
0.1uF/25V/Y5V
C4
0.1uF/25V/Y5V
R963
0
R963
0
C395
0.1uF/25V/Y5V
C395
0.1uF/25V/Y5V
C12
4.7uF/16V/Y5V
C12
4.7uF/16V/Y5V
R4
13K/1%
13K/1%
R4
13K/1%
13K/1%
C393
0.1uF/25V/Y5V
C393
0.1uF/25V/Y5V
R289
1K
1K
R289
1K
1K
C3
0.1uF/25V/Y5V
C3
0.1uF/25V/Y5V
C14
22uF/10V/Y5V
C14
22uF/10V/Y5V
R21
3.3K
R21
3.3K
C2
0.1uF/25V/Y5V
C2
0.1uF/25V/Y5V
R275
5.1K
R275
5.1K
C8
22uF/10V/Y5V
C8
22uF/10V/Y5V
R467
10K/1%
10K/1%
R467
10K/1%
10K/1%
Q6
NPN_3DG3904M
NPN_3DG3904M
Q6
NPN_3DG3904M
NPN_3DG3904M
GND1
GND1
C46
0.1uF/25V/Y5V
C46
0.1uF/25V/Y5V
C298
100pF/
50V/
N
P0
C298
100pF/
50V/
N
P0
C391
0.1uF/25V/Y5V
C391
0.1uF/25V/Y5V
TM64
TM64
R7
NC/0
R7
NC/0
C325
0.1uF/25V/Y5V
C325
0.1uF/25V/Y5V
U1
AT1529
U1
AT1529
VCC
1
REF
2
GND
3
FB
4
EN
5
PGND
6
LX
7
VIN
8
TP
9
C299
0.1uF/25V/Y5V
C299
0.1uF/25V/Y5V
R295
NC/100K
R295
NC/100K
C392
22uF/10V/Y5V
C392
22uF/10V/Y5V
Q209
NC/P_A03407
Q209
NC/P_A03407
G
D
S
C29
0.1uF/25V/Y5V
C29
0.1uF/25V/Y5V
C26
0.1uF/25V/Y5V
C26
0.1uF/25V/Y5V
C394
0.1uF/25V/Y5V
C394
0.1uF/25V/Y5V
R19
2.7K
R19
2.7K
R3
100
R3
100
XP3
8PIN/2.5mm
XP3
8PIN/2.5mm
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
Q4
NPN_3DG9013
NPN_3DG9013
Q4
NPN_3DG9013
NPN_3DG9013
C22
0.1uF/25V/Y5V
C22
0.1uF/25V/Y5V
R571
20K
R571
20K
L1
2.2uH/3A
L1
2.2uH/3A
L4
2.2uH/3A
L4
2.2uH/3A
R8
10
R8
10
Main Board Circuit Diagram:POWER
7-6
7-6
harman/kardon
BDS 270 + 570 Service Manual
Page 71 of 90
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