Read LG 42LG80FR (CHASSIS:LP81G) Service Manual online
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.
0.1uF
C641
+5V_MULTI
+12V
+12V
SW_R
0.1uF
C633
680K
R637
+5V_MULTI
SPK_R-
+5V_MULTI
2.2uF
C662
+5V_MULTI
680K
R640
4.7K
R633
SW_L
4.7K
R634
4.7K
R649
MNT_ROUT
MNT_L_AMP
SPK_L-
MC74HC4066ADR2G
IC602
3
YB
2
YA
4
XB
1
XA
6
CONTROL_C
5
CONTROL_B
7
GND
8
XC
9
YC
10
YD
11
XD
12
CONTROL_D
13
CONTROL_A
14
VCC
COMP1_R
680K
R638
680K
R639
680K
R629
2.2uF
C665
+12V
1K
R645
680K
R630
680K
R612
680K
R611
AUDIO_SW
SPK_R+
MNT_LOUT
33pF
C627
1K
R646
+5V_MULTI
33pF
C628
SIDE_RIN
2.2uF
C664
MNT_R_AMP
+5V_MULTI
COMP1_L
+5V_MULTI
SIDE_LIN
6800pF
C650
AUDIO_SW
6800pF
C649
2.2uF
C663
4.7K
R647
SPK_L+
LM324D
IC601
3
INPUT1+
2
INPUT1-
4
VCC
1
OUT1
6
INPUT2-
5
INPUT2+
7
OUT2
8
OUT3
9
INPUT3-
10
INPUT3+
11
GND
12
INPUT4+
13
INPUT4-
14
OUT4
10K
R641
+1.8V_DVDD
SPK_L+
0.1uF
C605
0.1uF
C617
10uF
16
V
C604
+1.8V_DVDD
0.1uF
C636
4.7K
R623
1uF
C608
3.3
R635
0.1uF
C602
I2S_SDO
0.01uF
C648
0.1uF
C629
+16V_NTP
NTP3000A
IC600
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
VSS_IO
6
CLK_I
7
CLK_O
8
VDD_IO
9
DGNDPLL
10
AGNDPLL
11
LFM
12
AVDDPLL
13
DVDDPLL
14
NC_1
15
DVSS
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
PWM_3B/PWM_HP2
23
PWM_3A/PWM_HP1
24
PROTECT
25
FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC_2
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
0.47uF
C640
22000pF
C623
0.1uF
C637
1uF
C624
10uF
16
V
C600
+3.3V
100pF
C601
SCL_Part
SPK_L-
330uF
35V
C612
0
HOTEL_OPT
R642
SPK_R-
100
R601
+16V_NTP
1000pF
C606
0.01uF
C638
+16V_NTP
4.7K
R627
+16V_NTP
SPK_R+
100
R602
I2S_MCLK
0.01uF
C647
+1.8V_AVDD
0.01uF
C613
10uF
16V
C609
100pF
READY
C642
DA-8580
EAP38319001
L603
2S
1S
1F
2F
22000pF
C616
0.1uF
C607
3.3K
R600
1000pF
C603
+16V_NTP
3.3
R636
+1.8V_AVDD
100
R603
0.1uF
C644
0.47uF
C632
1uF
C618
1000pF
50V
C651
3.3
R604
0.01uF
C639
0.1uF
C615
4.7K
R628
4.7K
R624
3.3
R625
0.1uF
C626
+16V_NTP
0.1uF
C610
22000pF
C625
I2S_SCK
I2S_WS
3.3
R626
0.1uF
C643
SDA_Part
22000pF
C611
DA-8580
EAP38319001
L607
2S
1S
1F
2F
SW_RESET
330uF
35
V
C666
RT1C3904-T112
Q600
E
B
C
RT1C3904-T112
Q606
E
B
C
RT1C3904-T112
Q607
E
B
C
SMAW250-04
P601
1
2
3
4
1uF
C614
+1.8V
+1.8V_AVDD
+1.8V_DVDD
10K
R616
10K
R613
6.8K
R620
6.8K
R619
UBW2012-121F EAM38769505
120OHM
L606
UBW2012-121F
EAM38769505
120OHM
L614
UBW2012-121F
EAM38769505
120OHM
L615
0
R606
100pF
C667
+16V_NTP
0.1uF
C678
0.1uF
C703
22000pF
C689
10uF
16
V
C669
+16V_NTP
DA-8580
EAP38319001
L617
2S
1S
1F
2F
+1.8V_AVDD
+16V_NTP
0.01uF
C707
2SA1530A-T112-1R
Q610
E
B
C
0
R660
330uF
35V
C687
22000pF
C679
4.7K
R671
1000pF
C672
1000pF
C668
22000pF
C685
0.1uF
C681
WF_SPK_L+
WF_SPK_L-
4.7K
R675
NTP3000A
IC603
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
VSS_IO
6
CLK_I
7
CLK_O
8
VDD_IO
9
DGNDPLL
10
AGNDPLL
11
LFM
12
AVDDPLL
13
DVDDPLL
14
NC_1
15
DVSS
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
PWM_3B/PWM_HP2
23
PWM_3A/PWM_HP1
24
PROTECT
25
FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC_2
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
10uF
16
V
C673
+1.8V_AVDD
DA-8580
EAP38319001
L616
2S
1S
1F
2F
+16V_NTP
0.1uF
C680
I2S_MCLK
0.1uF
C694
22000pF
C695
I2S_SDO
100pF
READY
C674
1uF
C684
+3.3V_MST
4.7K
R676
+1.8V_DVDD
10uF
16V
C677
0.1uF
C697
0.01uF
C682
100
R655
3.3
R677
I2S_SCK
+3.3V
1uF
C675
+16V_NTP
WF_SPK_R-
330uF
35V
C686
SDA_Part
I2S_WS
SW_RESET
3.3
R678
AC_DET
0.1uF
C653
0.47uF
C705
100
R666
WF_SPK_R+
4.7K
R672
+16V_NTP
SCL_Part
+1.8V_DVDD
1uF
C688
0.01uF
C706
0.1uF
C704
0.1uF
C652
10K
R661
0.01uF
C654
3.3
R674
0.01uF
C655
1uF
C696
0.47uF
C698
3.3
R659
0.1uF
C671
3.3
R673
3.3K
R654
10K
R652
+3.3V_MST
0
R E
A D
Y
R653
NTP_Fault
NTP_Fault
100
R656
100
R657
100
R658
1000pF
50V
C683
0.1uF
C670
0.1uF
C676
SMW250-05
P602
1
2
3
4
5
UBW2012-121F EAM38769505
L612
UBW2012-121F EAM38769505
L611
UBW2012-121F EAM38769505
L621
UBW2012-121F EAM38769505
L613
UBW2012-121F EAM38769505
L618
UBW2012-121F EAM38769505
L610
UBW2012-121F EAM38769505
L620
UBW2012-121F EAM38769505
L619
WF_SPK_L+
WF_SPK_L-
WF_SPK_R-
WF_SPK_R+
1N4148W
100V
D608
READY
1N4148W
100V
D609
READY
1N4148W
100V
D610
READY
1N4148W
100V
D611
READY
1N4148W
100V
D612
READY
1N4148W
100V
D613
READY
1N4148W
100V
D614
READY
1N4148W
100V
D615
READY
100
R615
100
R614
4.7
R607
R E
A D
Y
4.7
R609
R E
A D
Y
4.7
R610
4.7
R608
4.7
R621
4.7
R617
4.7
R618
R E
A D
Y
4.7
R622
R E
A D
Y
4.7
R667
4.7
R668
R E
A D
Y
4.7
R669
4.7
R670
R E
A D
Y
4.7
R665
R E
A D
Y
4.7
R663
4.7
R662
R E
A D
Y
4.7
R664
470pF
C621
470pF
C620
470pF
C619
470pF
C622
470pF
C635
470pF
C630
470pF
C634
470pF
C631
470pF
C692
470pF
C691
470pF
C690
470pF
C693
470pF
C702
470pF
C700
470pF
C699
470pF
C701
+12V
+12V
WF_SPK_R+
WF_SPK_L-
WF_SPK_R-
WF_SPK_L+
WF_SPK_L+
WF_SPK_L-
WF_SPK_R-
WF_SPK_R+
SPK_L-
AUDIO
H5 LG80
6 11
for COMP1
for SIDE R/L
AMP for Line out
Audio S/W : COMP1 or SIDE L/R
EAX50659401
MSTAR LP81G
2008/02/20
Main AMP
Woofer AMP
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