Skyworth 8M29B, Руководство по обслуживанию

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5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
T
_
RF
_
AGC
RF
_
AGC
VIFP VIFM
IF
_
TV
IF
_
TV
T
_
RF
_
AGC
IF
_
TV
T
_
RF
_
AGC
T
_
IFAGC
5V
_
TUNER
3
.
3VA
5V
_
TUNER
5V
_
B
5V
_
B
5V
_
TUNER
5V
_
B
12VA
RF
_
AGC
_
SEL
2
RF
_
AGC
2
VIFP
2
VIFM
2
#IF
_
OUT
1
0
IF
_
OUT
1
0
T
_
IFAGC
1
0
T
_
SDA
2
T
_
SCL
2
#IF
_
OUT
1
0
IF
_
OUT
1
0
T
_
IFAGC
1
0
T
_
SDA
2
T
_
SCL
2
IF
_
AGC
_
DVB
1
0
Title Size
Document Number
Rev
Date:
Sheet
of
4/1
00
.
1
TUNER
Custom
41
0
Friday, December 1
0
, 2
0
1
0
Title Size
Document Number
Rev
Date:
Sheet
of
4/1
00
.
1
TUNER
Custom
41
0
Friday, December 1
0
, 2
0
1
0
Title Size
Document Number
Rev
Date:
Sheet
of
4/1
00
.
1
TUNER
Custom
41
0
Friday, December 1
0
, 2
0
1
0
RF AGC Switch
close together
SAW Drive
Close to MSD309
Q604
䴴䖥
tuner RFAGC
㛮ᬒ㕂
DVB-T TUNER
TUNER POWER
䴴䖥
tuner
ᬒ㕂
Q6
0
4
39
0
6
Q6
0
4
39
0
6
1
3
2
C89
0.
1u
C89
0.
1u
C474 0.
1u
C474 0.
1u
R429 NC/39
0
R
R429 NC/39
0
R
U1
0
VA1P1BF84
0
1
U1
0
VA1P1BF84
0
1
Body
15
NC
3
AS
4
SDA
6
SCL
5
IFD _ OUT 2
11
IF _ AGC
9
IFD _ OUT 1
1 0
Body
12
Body
14
Body
13
RFAG C _ M
1
NC
2
VCC _ 5V
7
IFA _ OUT
8
R422
1
00
K
R422
1
00
K
R456 22R R456 22R
Q4
0
3
39
0
4
Q4
0
3
39
0
4
1
2 3
U11
VA1P1BF84
0
2
U11
VA1P1BF84
0
2
Body
15
NC
3
AS
4
SDA
6
SCL
5
IFD _ OUT 2
11
IF _ AGC
9
IFD _ OUT 1
1 0
Body
12
Body
14
Body
13
RFAG C _ M
1
NC
2
VCC _ 5V
7
IFA _ OUT
8
L4
0
FB L4
0
FB
R4
00
1
0
K
R4
00
1
0
K
C446 0.
1u
C446 0.
1u
C87
0.
1u
C87
0.
1u
R4
0
9
1
0
K
R4
0
9
1
0
K
C465 47n C465 47n
SAW
U3
0
F44
0
1
SAW
U3
0
F44
0
1
ING
2
OUT1
4
GND
3
OUT2
5
IN
1
+
CA5 7 1 00 uF/16V
+
CA5 7 1 00 uF/16V
C5
0
9
47pF C5
0
9
47pF
R415
1
0
K
R415
1
0
K
C51
0
47pF C51
0
47pF
IN
GND
OUT
U23
LM78
0
5
IN
GND
OUT
U23
LM78
0
5
3
2
1
4
L42
2
.
2uH
L42
2
.
2uH
+
CA5 47 0 uF/16V
+
CA5 47 0 uF/16V