LG 42LE550N Service Manual page 35

+3.3V_NORMAL
IC8800
AP1117E18G-13
IN ADJ/GND
3 Vd=1.4V 1
2
OUT
C8800
0.1uF
16V
+1.8V_AMP
L8800
OPT
C8801
10uF
10V
AUD_LRCH
AUD_LRCK
AUD_SCK
SDA1_3.3V
SCL1_3.3V
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+1.8V_AMP
120 mA
C8803
C8802
10uF 0.1uF
16V
10V
+3.3V_NORMAL
C8819
22000pF
50V
L8802
AMP_RESET_N
C8808
1000pF
50V
BST1A
1
AUD_MASTER_CLK C8816
VDR1A THERMAL
2
1uF 25V 57
/RESET
3
+1.8V_AMP
AD
C8811 4
0.1uF DGND_1
5
GND_IO
6 IC8801
CLK_I
7
L8801
C8810 VDD_IO
8
C8806 1000pF
EAN60969601
50V DGND_PLL
9
100pF
R8806 AGND_PLL
50V 10
3.3K LF
11 NTP-7000
AVDD_PLL
12
DVDD_PLL
13
GND
14
OPT
C8804
0.1uF C8805 C8807
10uF
16V 0.1uF
10V
16V
+1.8V_AMP
OPT
C8815
10uF C8818
10V 0.1uF
16V
R8801 100
R8802 100
R8803 100
R8804 100
R8805 100
C8809 C8812 C8813 C8814 C8817
33pF 33pF 47pF 47pF 47pF
50V 50V 50V 50V 50V
EMI EMI EMI
KIM JONG HYUN
+24V +24V_AMP
L8803
MLB-201209-0120P-N2
C8827
0.1uF
50V
CCFL = 20V
Edge_LED 32~47 Inch = 20V
55 Inch & IOP Module = 24V
+24V_AMP
D8800
1N4148W R8812
EMI 12
100V
R8809
OPT
3.3
C8835
390pF
EMI 50V
C8832
C8826
C8820 C8824 0.01uF
10uF
0.1uF 0.1uF C8836
50V
50V 35V 390pF
50V
D8801 50V
1N4148W
R8813
100V
12
OPT
C8823
22000pF
50V
C8825
1uF
25V
NC C8828
42
25V 1uF
41 VDR2A C8830
22000pF
BST2A
40 D8802
R8814
50V
39 PGND2A_2 1N4148W 12
100V
PGND2A_1
38
OPT
37 OUT2A_2 C8837
390pF
OUT2A_1 50V
36
PVDD2A_2
35
C8838
PVDD2A_1
34 390pF
50V
PVDD2B_2 D8803
33
1N4148W
PVDD2B_1 R8815
32
100V
12
OUT2B_2 OPT
31
OUT2B_1 +24V_AMP
30
PGND2B_2
29
C8834
C8831 C8833
10uF
0.1uF 0.1uF 35V
50V 50V
C8822
1uF
25V C8829
22000pF
50V
R8807
0
POWER_DET
C8821 OPT
1000pF
50V
+3.5V_ST
R8810
R8808 100
10K
C
R8811
B
Q8800
AMP_MUTE
2SC3052
10K
E
R8819 L8805
12
AD-9060
C8841
2S 2F 0.1uF
50V
C8839
0.47uF
1S 1F 50V
C8842
0.1uF
15uH
50V
R8817
12
R8818
12 L8804
AD-9060
C8843
2S 2F
0.1uF
C8840 50V
0.47uF
50V
1S 1F
C8844
15uH
0.1uF
R8816
12 50V
SPK_L+
SPK_L-
SPK_R+
SPK_R-
SPK_L+
R8820
4.7K
SPEAKER_L
R8821
4.7K
SPK_L-
SPK_R+
R8822
4.7K
SPEAKER_R
R8823
4.7K
SPK_R-
WAFER-ANGLE
R8824
0
4
R8825
0
3
R8826
0
2
R8827
0
1
P8800
BCM (EUROBBTV) 2009.06.18
38
NTP7000
LGE Internal Use Only