BBK LEM1992, Руководство по обслуживанию, Страница: 7 / 34

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STB5V
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8
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8
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CA303 100uF/16V
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U301
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IN
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ADJ
U303
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C203 0.
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3407
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202 M
M
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T3904
R201 10K
R202
100K
CA20
220uF/16V
CA21
220uF
R171 27K
R174
100K
R178
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R179
20K
C198
0.1uF
C199
10nF
C200
0.
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C1
3.3nF
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3
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1
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C202 0.
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R443
1K
R444
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C214
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C215
39pF
R500
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Q4 3904
R5 4.7K
R344 4.7K
R22 4.7 K
R24
1.5K
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R6 2K
R7 2K
C3
10nF
C4
10nF
R8
100R
R9
100R
1 2 3 4
CN1
T
J
C3
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A
27 25 23 17 19 21 11 13 15 5 7 9 3 1
28 26 24 18 20 22 12 14 16
6 8
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2
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R25 200R
R26
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R27
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R55 2.2k
R56 3.3k
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M
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C204 0.
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R28 4.
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R29
2.2k
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X
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R40 0R/ NC
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3.9K
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R58
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R87
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R86
3.3R /0805
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1
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C82 473
C83 104
1
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6
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8
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C27 16v/
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6
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1
1
1 1 1
1
1
1
1 1
1
1
1
1
C29
104
1 2 3 4 5
CN6
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m
1
1
1
1
1
1
1
C23
0.
1uF
C30
0.
1uF
C33
0.
1uF
IN
OUT
ADJ
U4
AM
1117-
ADJ /
N
C
R12.
2k/N C
R19 3.3k/ NC
C36
2.
2uF/
X
5R/
16V/
C
0603 /
N
C
C37
0.
1uF/
N
C
C38
16v/
10uF /
N
C
+
5
V_
NORMAL
AVDD_
DDR1_
8
V
+
5
V_
NORMAL
+
2
_
5
V_
NORMAL
+
5
V_
STANDBY
+
3
_
3
V_
STANDBY
+
3
_
3
V_
STANDBY
+
5
V_
NORMAL
VCC-
PANEL
AGND
S
B
12V
LE
D
R
IRIN
KEY0
-S
AR
0
KEY1
-S
AR
O
AG
N
D
+
3
_
3
V_
ST
AN
D
B
Y
+
5
V_
ST
AN
D
B
Y
+
5
V_
ST
AN
D
B
Y
RXO0-
RXO0+
RXO1- RXO2-
RXO1+ RXO2+
RXOC-
R
XOC+
RXO3-
R
XO3+
RXE0- RXE1- RXE2- RXEC-
RXE3-
RXE0+ RXE1+ RXE2+ RXEC+ RXE3+
AGND
AGND
V
CC-P
A
NE
L
PAN
E
L
_
O
N
/O
F
F
+
3
_
3
V_
ST
AN
D
B
Y
AGND
+
1
_
2
V_
VD
D
C
+
12V
_N
O
R
M
A
L
PW
R
-O
N
/O
F
F
+
5
V_
STANDBY
+
5
V
_
NO
RM
A
L
+
12V
_N
O
R
M
A
L
S
B
12V
+
5
V_
ST
AN
D
B
Y
BL
-O
N
/O
F
F
S
B
12V
+
5
V_
ST
AN
D
B
Y
+
12V
_N
O
R
M
A
L
LE
D
-
LE
D
+
S
B
12V
+
5
V_
NORMAL
TUNER_3.
3V
CIRCUIT DIAGRAM