(No.YA707<Rev.001>)2-9
2-10(No.YA707<Rev.001>)
MAIN PWB ASS'Y(1/46)
[TERRESTRIAL TUNER]
HU-71100006
hb1_main_0612_24/48_0.0
1
1
2
2
3
3
4
4
5
5
6
6
A
A
B
B
C
C
D
D
DTT_IF_NARROW-
DTT_IF
+5VTA
+5VT_ANT
+5VTA
+5VTA
+3V3DT
+5VTA
+5VT_ANT
+3V3DT
RF_CVBS
SIF
TUNER0_SCL
TUNER0_AGC
TUNER0_SDA
ANT_PWR_EN
ANT_PWR_CHK
DTT_IF_NARROW-
DTT_IF
All location are from 921 to 960
IIC AS : Tuner : 0xC0h
Analog Demod : 0x86h
Antenna Current Limiting Circuit (100mA Limiting)
Antenna Power Short Protection Circuit
IF ANT_PWR_CTRL is L
--> ANT_PWR_EN L
Fault Flag (Output):
Active-low, open-drain output.
Indicates overcurrent or
thermal shutdown conditions
ANT_PWR_EN
LOW
HIGH
ON
+5V_ANT
OFF
Current limit threshold is determined by
ILIMIT = 230V / RSET,
where : 154 < RSET < 2.29k
C935
4R7p/50V/1005
R923
101/1005
C926
102p/50V/1005
Q924
FDV301N_NL
1
3
2
L923
BLM18PG300SN1D
C934
104p/16V/1005
C933
OPEN-330p/1005
C925
104p/16V/1005
220uF/16V/MVK/S
C921
R940
201/1005
C936
220p/50V/1005
R926
000/1005
C931
220uF/16V/MVK/S
RF IN
U921
FQD1116AME/BH
RF PIN IN/OUT(OPTION)
1
ANT_PWR
2
GND
3
NC
4
RF_AGC
5
GND
6
5v
7
VT
8
GND
9
NC
10
AS
11
SCL
12
SDA
13
REF
14
IF-AGC
15
DIF1
16
DIF2
17
WIF OUT/NC
18
+5V IF
19
2nd IF SOUND/LOW DIG IF1
20
2nd IF SOUND/LOW DIG IF2
21
NC
22
AS_IF
23
CVBS
24
GND
25
GND
26
GND
27
GND
28
R939
201/1005
R925
121/1005
R921
562/1005
R930
562/1005
R927
222/1005
C932
OPEN-330p/1005
R929
121/1005
C923
102p/50V/1005
C929
104p/16V/1005
C927
220uF/16V/MVK/S
U922
POWER SW MIC2544-1YMM
EN
1
FLG
2
NC
4
ILIM
5
OUT
6
IN
7
OUT
8
GND
3
R924
103/1005
L922
BLM18PG300SN1D
C930
102p/50V/1005
Q925
FDV301N_NL
1
3
2
C922
104p/16V/1005
R933
000/1005
L921
BLM18PG300SN1D
R922
330/1005
R934
000/1005
R932
000/1005
R931
330/1005
R928
750/F/1005
MAIN PWB(13/46)
MAIN PWB(26/46)
MAIN PWB(13/46)
MAIN PWB(26/46)
MAIN PWB(26/46)
MAIN PWB(7/46)
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM (1/46) [TERRESTRIAL TUNER]
