LG 42LD450 Service Manual page 38

+1.8V_AMP
+3.3V_Normal
IC7800
AP1117E18G-13
INADJ/GND
OUT
C7800 C7802 C7803
0.1uF 0.1uF
10uF
16V 16V
10V
IC7800-*1
KIA1117ST18
IN ADJ/GND
3 1
2
OUT
Replacement
AMP_RESET_N
AUD_MASTER_CLK
+1.8V_AMP
+1.8V_AMP
L7801
L7800
OPT
C7801 C7804
10uF 0.1uF
10V
16V
AUD_LRCH
AUD_LRCK
AUD_SCK
AMP_SDA
AMP_SCL
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
120 mA
AMP_VCC
C7820
0.1uF
50V
+3.3V_Normal
C7819
22000pF
50V
L7802
C7808
1000pF
50V
BST1A
1
C7816
VDR1A THERMAL
2
1uF 25V 57
/RESET
3
AD
C7811 4
0.1uF DGND_1
5
GND_IO
6 IC7801
CLK_I
7
C7810 VDD_IO
8
C7806 1000pF
EAN60969601
50V DGND_PLL
9
100pF
R7806 AGND_PLL
50V 10
3.3K LF
11 NTP-7000
AVDD_PLL
12
DVDD_PLL
13
GND
14
OPT
C7805 C7807
10uF
0.1uF
10V
16V
+1.8V_AMP
OPT
C7822
C7815
1uF
10uF C7818
25V
10V 0.1uF
16V
R7801 100
R7802 100
R7803 100
C7821
R7804 33
1000pF
R7805 33 50V
C7809 C7812 C7813 C7814 C7817
18pF 18pF 22pF 22pF 22pF
50V 50V 50V 50V 50V
OPT OPT OPT
D7800
1N4148W R7812 R7819
OPT
100V 12 12
R7809 OPT
3.3
C7834
390pF
50V
OPT
C7831
C7826
C7824 0.01uF
10uF
0.1uF C7835
50V
35V 390pF
50V
D7801 50V
1N4148W
R7813 R7817
100V
12 12
OPT
C7823
22000pF
50V
C7825
1uF
25V
NC C7827
42
25V 1uF
41 VDR2A C7829
22000pF
BST2A
40 D7802
R7818
R7814
50V
39 PGND2A_2 1N4148W 12 12
100V
PGND2A_1
38
OPT
37 OUT2A_2 C7836
390pF
OUT2A_1 50V
36
35 PVDD2A_2
C7837
PVDD2A_1
34 390pF
50V
33 PVDD2B_2 D7803
1N4148W
PVDD2B_1 R7815 R7816
32
100V
12 12
OUT2B_2 OPT
31
OUT2B_1
30 AMP_VCC
PGND2B_2
29
C7833
C7830 C7832
10uF
0.1uF 0.1uF 35V
50V 50V
C7828
22000pF
50V
R7807
0
POWER_DET
OPT
+3.5V_ST
R7810
R7808 100
10K
C
R7811
B
Q7800
AMP_MUTE
2SC3052
10K
E
OPT
C7844
0.01uF
L7804
50V
AD-8770 R7820
C7840
OPT
R7828
2S 2F 0.1uF
4.7K
50V
3.3
C7838
0.47uF
1S 1F 50V OPT
R7829
C7841 3.3
0.1uF R7821
15uH
50V C7845 OPT
4.7K 0.01uF
50V
C7846 OPT
L7803
AD-8770 0.01uF
C7842 R7822
2S 2F 50V
0.1uF 4.7K R7830 OPT
C7839 50V
0.47uF 3.3
50V
1S 1F
R7831 OPT
3.3
C7843 R7823
15uH OPT
C7847
0.1uF 4.7K 0.01uF
50V
50V
R7824
0
SPK_L+
R7825
0
SPK_L-
R7826
0
SPK_R+
R7827
0
SPK_R-
2.5mm -> 2.0mm changed
GP2_Saturn7M
AUDIO[NTP]
SPK_L+
SPEAKER_L
SPK_L-
SPK_R+
SPEAKER_R
SPK_R-
WAFER-ANGLE
4
3
2
1
P7800
Ver. 1.1
96
LGE Internal Use Only