Skyworth 8M39A/E, Service Manual

Page: 30 / 39

5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
T_RF-AGC
RF_AGC
VIFM VIFP
IF_TV
TV-SIFP TV-SIFM
IF_TV
T_IFAGC
T_RF-AGC
5V_B2
5V_TUNER
12VA
5V_TUNER
3.3VA
3.3VA
12VA
VIF_12V
5V_TUNER
5V_B2
5V_B2
RF_AGC_SEL
2
RF_AGC
2
SIF_CTL
2
TV-SIFP
2
TV-SIFM
2
VIFM
2
VIFP
2
IF_OUT
4
#IF_OUT
4
IF_AGC
4
T_SDA
4
T_SCL
4
Title Size
Document Number
Rev
Date:
Sheet
1.0
TUNER
41
0
Thursday, December 17, 2009
Title Size
Document Number
Rev
Date:
Sheet
1.0
TUNER
41
0
Thursday, December 17, 2009
Title Size
Document Number
Rev
Date:
Sheet
1.0
TUNER
41
0
Thursday, December 17, 2009
䴴䖥
tuner
ᬒ㕂
RF AGC Switch
TUNER POWER
close together
close to U27
SAW Drive
䴴䖥
MSD306
ᬒ㕂
Q404
䴴䖥
tuner RFAGC
㛮ᬒ㕂
䴴䖥
tuner
ᬒ㕂
TUNER
C177 0.1u C177 0.1u
R455 NC/10k R455 NC/10k
Q404 MMBT3906 Q404 MMBT3906
1
3
2
C458
1n
C458
1n
C461 NC/10n C461 NC/10n
C89
0.1u
C89
0.1u
R429 NC/390R R429 NC/390R
R421 56R R421 56R
IN
GND
OUT
U18
LM7805
IN
GND
OUT
U18
LM7805
3
2
1
4
R422
100K
R422
100K
R424 0ohm/NC R424 0ohm/NC
C85
NC/0.1u
C85
NC/0.1u
L405 0.82uH L405 0.82uH
Q401
NC/MMBT3904
Q401
NC/MMBT3904
C464 NC/10n C464 NC/10n
R440
100R
R440
100R
C457 0.1u C457 0.1u
R428 22R R428 22R
R456 33R R456 33R
+
CA4 100uF/16V
+
CA4 100uF/16V
C472 NC/10n C472 NC/10n
R417 4.7K R417 4.7K
C467
10n
C467
10n
R400
10K
R400
10K
SAW
U27 NC/K9656M
SAW
U27 NC/K9656M
ING
2
OUT1
5
GND
3
OUT2
4
IN
1
R457 NC/100K R457 NC/100K
C87
0.1u
C87
0.1u
C86
NC/0.1u
C86
NC/0.1u
R409
10K
R409
10K
C465 10n C465 10n
SAW
U30
X6966M
SAW
U30
X6966M
ING
2
OUT1
4
GND
3
OUT2
5
IN
1
R415
10K
R415
10K
R458 NC/2.2K R458 NC/2.2K
U10
ALPS_TDAG2-D01/02A
U10
ALPS_TDAG2-D01/02A
ANT POW
1
RF A GC
2
AS
3
SCL
4
SDA
5
XTAL OU T
6
MB
7
AIF OUT
8
IF AGC
9
IF OUT2
10
IF OUT1
11
GND
12
GND
13
GND
14
GND
15
R420 NC/1k R420 NC/1k
Q403
MMBT3904
Q403
MMBT3904
R425 1K R425 1K
Q405 2SC2216 Q405 2SC2216 3
1
2
C469 0.1u C469 0.1u
R459 NC/2.2K R459 NC/2.2K
R479 NC/10K R479 NC/10K
D400 NC/BA892 D400 NC/BA892
R434
1k
R434
1k
L42
2.2uH
L42
2.2uH
R183
100R
R183
100R
C460 0.1u C460 0.1u
L39
FB220/100mA
L39
FB220/100mA
C463 10n C463 10n
C470 NC/10n C470 NC/10n