BBK LT2007 Schematic
SERVICE MANUAL
LT2007
321
4
D
D402
+12V +12V
IN4148
C413
220u16V
R408
10K
R407
10K
R410
100
R411
100
R420
10K
R406
22K
Q402
2SA1015
R421
4K7
C404
0.39u
C409
0.1u
R414
18K
C406
0.39u
C410
0.1u
R419
10K
C
LSL
B
+12V
LSL
A
1 2 34
R401
22K
R404
22K
STBY
Q403
2SC1815
C405 2u2/10V
R402
160K
1
2
8
9
R405
160K
R409
1R2/3W
C401
470u16V
C403
104
6
-VINA
SHNTDOWN
BYPASS
-VINB
+12V-A
U401
LM4950
VDD
VOUTA
VOUTB
GND4GND
5
D
+12V-A
C402
470u16V
3
R412
15
7
R413
15
RIN
LIN
ROUT
LOUT
C411
473
C412
473
RIN LIN
2R2/0.5W
R415
VOUTB VOUTA
C407
470u25V
C408
470u25V
CN403
1
2
3
4
5
6
J401
6
7
8
HJR1-2C L-12V
D401 IN4148
Q401
2SC1815
VOUTA
VOUTB
Title
D2007-0( )功放板原理图
Number RevisionSize
A
Date: 29-Dec-2004 Sheet of
File: E:\design\circuit\BBKAV.ddb Drawn By:
45
3
2
1
R418
4K7
STBY
+12V
LSL
LSR
STANDBY
ROUT
LOUT
2R2/0.5W
R417
56/1206
STANDBY
R416
+12V
CN402
1
2
3
4
5
6
TO AMP
CN401
1
2
3
4
OUTPUT
C
B
A
321
4
D
C
B
CN1
CON-4
4
3
2
1
C1
R1
CAP
RES2
C2
CAP
L1
L2
L1
L1
C3
R2
RES2
CAPC4CAP
CN2
4
3
2
1
USB
D
C
B
A
1 2 34
Title
A2007-0(USB )板原理图
Number RevisionSize
A
Date: 29-Dec-2004 Sheet of
File: E:\design\circuit\BBKAV.ddb Drawn By:
A
321
4
D
R602
330/1206
R601
330/1206
C
J601
JT11
B
10
6
9
11
8
7
3
5
2
4
1
C603
221/0603
C604
221/0603
L601
BEAD/1206
L602
BEAD/1206
C601
102/0603
C602
1022/0603
CN601
1
2
3
4
5
6
D
C
B
A
1 2 34
Title
62007-0( )耳机板原理图
Number RevisionSize
A
Date: 3-Jan-2005 Sheet of
File: E:\design\circuit\BBKAV.ddb Drawn By:
A
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