LG PW800 Service Manual page 27

TUNER_KR
+3.3V_TU
TUNER_RESET
C3706
0.1uF
16V
R3702 33
TU_SCL
R3703
33
TU_SDA
+3.3V_TU C3707
18pF
L3701
50V
OPT
C3701
C3703
C3704
0.1uF 100pF
10uF
16V 50V 10V
1.8V_TU
Close to the tuner
L3702
C3702 C3709
C3705
10uF 0.1uF 100pF
50V
16V
10V
0
IF_P_MSTAR
R3705
close to IF line
0
IF_N_MSTAR
R3706
R3704 100
IF_AGC
AV IN
JK3751
PEJ038-4Y6
5 M5_GND
4 M4
D3751
C3751
AMOTECH 100pF
3 M3_DETECT
5.6V 50V
OPT
1 M1
D3752
C3752
AMOTECH
6 M6
100pF
5.6V
50V
OPT
VA3751
R3751
20V
75
JK1501
PEJ038-3B6
5 GND
4 L
3 DETECT
1 R
R1155
1K
HP_DET
Headphone OUT
HP_GND
seperate HP GND
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright 2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
TUNER_EU
TU3701
TDSS-G551D(B)
R3707
100
NC_1
1
RESET
2
SCL
3
SDA
C3708 4
18pF
3.3V
50V
5
NC_2
6
1.8V
7
NC_3
8
IF_AGC
9
DLIF_[P]
10
DLIF_[N]
11
A1 B1
A1 B1
12
SHIELD
C3710
0.1uF
16V
+1.8V_TU
+3.3V_TU
R3754
PC_L_IN
10K 1%
R3756
R3752
12K
470K
1%
R3755
10K
PC_R_IN
1%
R3753
R3757
470K
12K
1%
R3711
0
AV_CVBS_IN
C3718 C3754
C3753
220pF 220pF
47pF
50V 50V
50V
OPT
EMS_S2
C1115
C
E 0.1uF
C
E
16V
B
B
B
B
E
C
E
C
HP_GND
Q1105
HP_GND
HP_GND MMBT3906(NXP)
R1127
C
0
R165 1K
B
Q1106
2SC3052
E
HP_GND
For EMI
TUNER_KR
M1
MDS62110213
TU3701-*1
TDSS-H751F
SCL
3
SDA
4
B[3.3V]
5
IF_AGC
9
IF[P]
10
IF[N]
11
A1 B1
A1 B1
12
SHIELD
IC3701
AZ1117BH-1.8TRE1
IN OUT
3 2
1 R3710
C3715 C3716
1
C3711 C3712 ADJ/GND 100pF 10uF
10uF 0.1uF 50V 10V
10V 16V
C3713 C3714
0.1uF 10uF
16V 10V
10V C1118
10uF 10uH L203 R262
22
10V 10uH L205
10uF R263 22
C1119
C1116 R261
R260
200
200
0.1uF
16V
C272 C268
10uF 10uF
10V 10V
HP_GND HP_GND
SIDE_HP_MUTE
+3.5V_ST
R56
100
C21
10uF
10V
1.8V_TU
C3717
0.1uF
16V
HP_LOUT
HP_ROUT
+3.3V_TU
C3730
22uF
10V
21
TUNER_RESET
20
IF_AGC
19
TU_SCL
18
TU_SDA
17
IF_P_MSTAR
16
IF_N_MSTAR
15
14
PC_L_IN
13
PC_R_IN
12
11
AV_CVBS_IN
10
9
8
C22 C23
7
10uF 10uF
6.3V 6.3V
6
HP_LOUT
5
HP_ROUT
4
3
SIDE_HP_MUTE
2
HP_GND
1
HP_DET
05004HR-20B01S
P3701
P3702
12507WR-04L
L3704
UBW2012-121F
1
C3733 C3738
C3731
0.1uF 22uF 0.1uF 2
16V 10V 16V
3
4
5
LGE Internal Use Only