Cambridge Audio Azur 752BD, Руководство по обслуживанию

Страница: 40 / 46

40
O
PE
N
/C
LO
SE
U
402
VFD
1
PO
W
ER
S
TB
Y
K401:
pl
ay
/p
au
se
K403:
正跳
K404:
st
op
K405:
反跳
K406:
op
en/
cl
os
e
K407:
st
an
db
y
工作方式：
待机时由于
VCC
为
0V
，
Q
402
截止，
Q
401
导通
LED
401
处于暗亮状态。
工作时时由于
VCC
为
5V
，
Q
402
导通，
LC
D
_C
TR
的作用导致
Q
401
截止，
LED
401
处于高亮状态。
Bl
ue
a
zur
LED
Bl
ue
a
zur
LED
LI
N
EAR
PH
ASE
MI
N
PH
AS
E
Bl
ue
a
zur
LED
ST
EE
P
from
D
S
P
from
DSP
to
DSP
from
DSP
D
4:
防止
3_3V
在待机时反灌到
VCC
，
造成在待机时
VCC
就有
2.7V
N
O
F
IT
N
O
F
IT
651BD
:
删除这些物料和
DS
P
。
To
Mai
nb
ao
rd
To
M
H
L
Ba
or
d
C416 104
C401 104
1 2 3
H
M
438R
K401
K404 K405
C405 104
Q
40
2
BC
807-25
Q
40
1
BC
807-25
27
SE
G
13/
G
R16
28
SE
G
14/
G
R15
29
SE
G
15/
G
R14
30
SE
G
16/
G
R13
31
SE
G
17/
G
R12
32
SE
G
18/
G
R11
33
VD
D
34
VEE
35
SE
G
19/
G
R10
36
SE
G2
0/
GR
9
37
G
R8
38
G
R7
39
G
R6
13
KE
Y4
12
KE
Y3
11
KE
Y2
10
KE
Y1
9
ST
B
8
CL
K
7
NC
6
D
IN
5
D
O
U
T
4
SW4
3
SW3
2
SW2
1
SW1 14
VDD
15
SEG1/ KS1
16
SEG2/ KS2
17
SEG3/ KS3
18
SEG4/ KS4
19
SEG5/ KS5
20
SEG6/ KS6
21
SEG7/ KS7
22 SEG8/ KS8
23
SEG9/ KS9
24 SEG 10/ KS1 0
25 SEG 11/ KS1 1
26 SEG 12/ KS1 2
52
OSC
51 VSS
50 LED 1
49 LED 2
48
LED 3
47 LED 4
46 LED 5
45
VDD
44 GR1
43
GR2
42
GR3
41 GR4
40
GR5
U
401
PT
6311
CE
404
47U
F/
35V
C407 104
C408
104
C419
104
CE
401
220U
F/16V
C414 101
K406
K407
C409
103
C402
103
U
RV1
U
RV2
K403
U
RV3
U
RV4
U
RV5
U
RV6
U
RV7
D
402
BA
S316
L402
601/S
M
T
C420 104
4
GND
3
D+
2
D-
1
VCC
5 5 66
CN
404
USB
2
CE
406
220U
F/
16V
D
401
LS
4148
D
413
LS
4148
1
F1
2
F1
4
P1
5
7
P1
2
6
P1
3
5
P1
4
8
P1
1
9
P1
0
10
P9
11
P8
12
P7
13
P6
14
P5
15
P4
16
P3
17
P2
18
P1
19
NX
23
4G
24
5G
25
6G
26
7G
31
NP
32
F2
27
8G
28
9G
29
10G
30
11G
33
F2
20
1G
21
2G
22
3G
C422
150P
F
C423
150P
F
C421
150P
F
C425
150P
F
C426
150P
F
C424
150P
F
C428
150P
F
C429
150P
F
C427
150P
F
C431
150P
F
C430
150P
F
CE
408
47U
F/
35V
1 3
2 4
L406
AC
M3225
L405
601/3216
A K
LE
D
401
LE
D
402
R
2
680R
K4
08
LE
D
403
R11
680R
LE
D
404
R16
680R
C434 102
C435 102
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
CN
401 18
P/
1.
0
R6
22R
R21
22R
R
22
22
0R
R
23
22
0R
R
24
22
0R
C1
102
C2
102
C3 102
CE2
220u
F
R53
*220R
R52
*220R
C436 102
R8
1R
R9
1R
1 2 3 4 56
7 8 9
10
T1
ER
11.5
Q
1
PC
817-25
Q
2
8050
L4
68u
H
R
5
2.
2K
R10 2.
2K
C4
9
104
CE5
220u
F
Q
3
PC
817-25
R12 100K
R13 220K
R14 100K
R15 2.
2K
C5
10
5(
N
C)
V1
AO
3415
R17 4.
7R
CE1
47u
F/
35V
ZD2
10V
R18 10K
C7 10
4/
50
V
1 2 3 4 5 6
CN6
Q
4
PC
817-25
Q
5
PC
817-25
Q
6
PC
817-25
R
25
10K
R26
10
K
R27
10K
D34
PES D5V 0U1UL
D2
PES D5V 0U1UL
R
406
1K
R
40
7
1K
R
40
8
1K
R
40
9
1K
R
40
5
51
K
R
411
10K
R412 10K
R413 10K
R414 10K
R
40
1
10
K
R
40
2
10
K
R
40
3
10
K
R
40
4
10
K
R
41
5
22
0R
R445 10K
R420 10K
R42
3
10K
R452
1K
R448
1K
R425
680R
R432 10K
R427 10K
R429 10K
R428
680R
C1
7
102
R
1
10K
R
3
10K
R
4
10K
D4
BA
T43W
S
SO
D
-323
C8 104
D1
BA
S316
R7
10R
D3
BA
S316
R19
10K
R20
10K
R28 33K
R29 10K
CN4 CN1
C4
22
μ
F
C1
0
104
C433
102
D5
RS
07D
(N
C)
L1
601/3216
GRID 1
GRID 2
GRID 3
GRID 4
GRID 5
GRI
D
6
GRI
D
7
GRI
D
8
GRI
D
9
GRI
D
10
GRI
D
11
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG
13
SEG
14
SEG
15
FL
-27V
VCC
KEY
1
KEY
2
KEY
3
VF
DST
VF
DCK
VCC
GN D
IR
3V
3_S
TB
3V
3_S
TB
O
PEN
_K
EY#
STB
Y_K
EY#
KEY
3
KEY
2
KEY
1
3V
3_S
TB
LED_
CT
R
3V3_S
TB
VF
DAT
U
SB_GND
#
VCC
VCC
VCC
VCC
SEG
11
SEG
10
SEG
15
SEG
14
SEG
13
SEG
12
SEG
11
SEG
10
SEG
9
SEG
8
SEG
7
SEG
6
SEG
5
SEG
4
SEG
3
SEG
2
SEG
1
G
R
ID
11
G
R
ID
10
GR
ID
9
GR
ID
8
GR
ID
7
GR
ID
6
GR
ID
5
GR
ID
4
GR
ID
3
GR
ID
2
GR
ID
1
GR
ID
2
GR
ID
3
GR
ID
1
GR
ID
5
GR
ID
6
GR
ID
4
GR
ID
8
GR
ID
9
GR
ID
7
G
R
ID
11
G
R
ID
10
USB
M
#
USB
P#
SW_
FILT
ER_
SEL
3V3_S
TB
O
PEN
_K
EY
#
STB
Y_
KEY#
VF
D
AT
VF
D
ST
VF
D
CK
IR
VCC
VCC_
O
N
FL
AC
2 FL
AC
1
FIL _O N_O FF
VCC_
O
N
FL
-2
7V
FLA
C2
FLA
C1
FI
L_
O
N
_O
FF
U
SB
M
U
SB
P
LED_STEEP
#
LED_
LIN
E#
LED_
M
IN
#
KEY
4
LED_
CT
R
VCC
VCC
VCC
VCC
M
H
L5
V
U
SB
P_
G
N
D
U
VC
C
MHL5
V
USB
M
#
USB
P#
U
VC
C
U
SBP_GND
SW_
FILT
ER_
SEL
LED_
LIN
E#
LED_STEEP
#
LED_
M
IN
#
PANEL BOARD
-38-