Philips 24PFS5505/12 Service Manual page 68

9-3-7 Tuner
1 ' s t S o u r c e : T C L S T 4 2 W S - 1 7 - E ( 3 9 4 G N P A L A L L 5 3 L ) _ S C L - T r < 1 0 0 0 n s * 9 0 %
2'nd Source : LGIT TDSY-G480D (394GPASEBIL03G)_ SCL-Tr <300ns*90%
T 2 T U N E R
TU101
L G T u n e r w i t h D V B - C / T / T 2
8 1
TH1 Ant. PWR
9
TH2
10 2 +3.3V_TU
TH3 +B1(+3.3V)
11
TH4
12 3
TUN_SDA R4186
TH5 SDA
13
22 OHM 1/16W
TH6
4 TUN_SCL
R4187
SCL
22 OHM 1/16W
5
TUN_DIF-#T2
DIF(N)
6
TUN_DIF+#T2
DIF(P)
7 IF_AGC_T
R4183 100OHM
IF AGC
C l o s e T u n e r
100NF 16V
C4127
1 ' s t S o u r c e : L G T D Q S - A 7 0 1 F ( 3 9 4 G P A S E B I L 0 4 G )
2'nd Source :TCL TUNER EU ()
TU102 T P V : c h a n g e T U 1 0 3 p a r t s n u m b e r f o l l o w L G . 1 / 6
S 2 T U N E R
L G T u n e r w i t h D V B - S / S 2
C4133
1NF 50V
12 1
VCC_LNBA
TH1 LNB A
13
TH2
14 2
TH3 NC
15
TH4
3 +3V3_VCC_S2
TU3.3V
4
NC
5
QP Output
6
IP Output
7
NC
8
AGC
9
X-OUT
10
R4202
SDA
22 OHM 1/16W
11
R4204
SCL
22 OHM 1/16W
C4147 C4150 C4151
+3.3V_TU 4
4,9,11
M-SDA
4,9,11
M-SCL
IFAGC_T
IFAGC_T 4
+3.3V_TU
FB412
1 2
120R 3A
C4138
C4139
100NF 16V
10UF 6.3V 20%
4
QP_S_1
4
IP_S_1
4
IFAGC_S
C L O S E T O T U N E R
M-SDA
4,9,11
M-SDA
M-SCL
4,9,11
M-SCL
D V B - C / T / T 2 D I F
C4118 C4119
NC/10PF 50V
NC/10PF 50V
TUN_DIF-#T2
R4174 R4175 R4176
R
0R05 1/16W 0R05 1/16W 0R05 1/16W
TUN_DIF+#T2
R4178 R4180
R4179
0R05 1/16W 0R05 1/16W
0R05 1/16W
R
C4123 C4124
NC/10PF 50V NC/10PF 50V
C L O S E T O T U N E R
L N B P O W E R S U P P L Y
+12V_Normal
L403
C4131
C4130
10UF 16V
100NF 25V
U415
8
C4140 3.3NF 50V
AGND
11
C4136
BY PASS
12
220NF 16V
VDD
10
R4190 60.4K 1%
COMP
2
R4191 NC/10K LNB_EN
+3.3V_TU
EN
LNB_LINEDROP 1
R4192 NC/10K
LINEDROP
14
PWM1/13/18V_SW
R4193 NC/10K
13V/18V
4
DISEQC
R4198
R4200
10K
10K
T U N E R P O W E R
+5V_Normal
U414
DIF- 4
AZ1117CH-3.3TRG1
3
VIN VOUT
R4177
NC/180R
C4122
DIF+ 4
10UF 6.3V 20%
LNB_EN
PWM1/13/18V_SW
+12V_Normal
D4003
10uH
1 2
C4132 C4134 C4135
SM340A
L I N E D R O P :
Low: 13/18V
High:
14/19V
MP8124GD  Z
4
PGND C4142
3
D4010
SW
5
SM340A
BST
6
VBOOST
7
100NF 25V
VOUT
C4146
9
TCAP
13
C4145 D4004
EXTM
22nF 10% 50V
R4201
100nF 35V
SM340A
33 OHM 1/16W
R4203
100K 1%
+3.3V_TU
2
C4121
100NF 16V C4120
10UF 6.3V 20%
LNB_EN 4
PWM1/13/18V_SW 4
+12V_Normal 3,4,5,11
1 3 / 1 8 V _ S W : L N B _ E N :
High: 18V Low: disable
Low: 13V High: enable
E S D & S u r g e
Protect
VCC_LNBA
ZD451 ZD452
R4194 R4195 R4197 ZD4005
NC/AZ6518-01F.R7G