LG 42LG3RC (CHASSIS:LP81F) Service Manual ▷ View 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.
100
R507
READY
+5V_TUNER
0.027uF
C512
4.7uF
35V
C510
READY
AM_AUDIO
27pF
C502
4.7K
R503
0.01uF
C503
+5V_TUNER
0.1uF
C520
+5V_TUNER
0
R545
220
R522
270pF
C513
READY
1K
R513
27pF
C501
MAIN_SIF
1K
R515
TV_MAIN
0.01uF
C507
READY
OPT
READY
R553
SCL_TUNER
SDA_TUNER
+5V_TUNER
4.7K
R504
4.7K
R508
0
R514
330
R506
330
R505
4700pF
C506
220
R521
2SA1530A-T112-1R
Q502
E
B
C
RT1C3904-T112
Q501
E
B
C
0
R519
0
R518
TAFT-Z703D
TU500
NON EU TUNER
14
AFT
13
V-OUT
5
RF_AGC
12
NC_4
11
A
S
2
GND_1
19
NC_7
18
NC_6
10
CLOCK
4
N
C_2
1
N
C_1
17
NC_5
9
DATA
8
GND_2
3
+B[5V]
16
SIF-OUT
7
N
C_3
6
TP[33V_OPTION]
15
A-OUT
21
SHIELD
20
NC_8
BLM18BD102SN1D
L502
READY
TAFT-H703F
TU500-*1
NTSC TUNER
14
AFT
13
V-OUT
5
RF_AGC
12
NC_4
11
AS
2
GND_1
19
NC_7
18
NC_6
10
CLOCK
4
NC_2
1
NC_1
17
NC_5
9
DATA
8
GND_2
3
+B[5V]
16
SIF-OUT
7
NC_3
6
TP[33V_OPTION]
15
A-OUT
21
SHIELD
20
NC_8
UBW2012-121F
120OHM
L501
10uF
16V
C521
TUNER
5
1
1
MSTAR
Near the pin
2008/01/08
TUNER
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_R-_HOTEL
SPK_L-
5.6K
R615
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
0.
1u
F
HOTEL_OPT
C646
680K
R612
680K
R611
AUDIO_SW
SPK_R+
MNT_LOUT
33pF
C627
1K
R646
+16V_NTP
+5V_MULTI
33pF
C628
SIDE_RIN
2.2uF
C664
MNT_R_AMP
+5V_MULTI
5.6K
R614
COMP1_L
+5V_MULTI
SIDE_LIN
6800pF
C650
SPK_R+_HOTEL
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
AUDIO_R
SW_RESET
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
1000pF
C630
3.3
R635
0.1uF
C602
1000pF
C620
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
1000pF
C635
1000pF
C634
SPK_L-
330uF
35V
C612
1000pF
C631
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
AC_DET
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
1000pF
C621
3.3
R625
0.1uF
C626
+16V_NTP
0.1uF
C610
22000pF
C625
1000pF
C622
1000pF
C619
I2S_SCK
I2S_WS
3.3
R626
0.1uF
C643
SDA_Part
22000pF
C611
DA-8580
EAP38319001
L607
2S
1S
1F
2F
SW_RESET
AMP_MUTE_HOTEL
3.9
R607
3.9
R609
3.9
R608
3.9
R610
3.9
R622
3.9
R618
3.9
R617
3.9
R621
330uF
35
V
C666
12505WR-09A00
HOTEL_OPT
P600
1
2
3
4
5
6
7
8
9
10
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
30V
READY
D600
6.8K
R620
6.8K
R619
30V
R E
A D
Y
D601
30V
READY
D602
30V
R E
A D
Y
D603
UBW2012-121F EAM38769505
120OHM
L606
UBW2012-121F
EAM38769505
120OHM
L614
UBW2012-121F
EAM38769505
120OHM
L615
0
R606
2SA1530A-T112-1R
Q608
E
B
C
+3.3V_MST
10K
R650
100
R651
RT1C3904-T112
Q609
HOTEL_OPT
E
B
C
10K
R631
HOTEL_OPT
AMP_MUTE_HOTEL
+3.3V
0
R605
READY
+3.3V
10K
R E
A D
Y
R648
200
R632
HOTEL_OPT
UBW2012-121F EAM38769505
L613
UBW2012-121F EAM38769505
L611
UBW2012-121F EAM38769505
L610
UBW2012-121F EAM38769505
L612
33pF
50V
C667
READY
33pF
50V
C668
READY
4.7uF
10V
C669
HOTEL_OPT
1N4148W
100V
D604
R E
A D
Y
1N4148W
100V
D605
R E
A D
Y
1N4148W
100V
D606
R E
A D
Y
1N4148W
100V
D607
R E
A D
Y
15K
R616
15K
R613
SPK_L-
AUDIO
MSTAR N-EU
6 11
Chinese Hotel Option
for COMP1
for SIDE R/L
AMP :GAIN X 4
Audio S/W : COMP1 or SIDE L/R
Digital Audio AMP
2008/01/08
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.
+3.3VDDA
RAMRAS
RAMCS
I2S_DIN
RAMDQM
JP703
RAMBA[0]
0.1uF
50V
C750
4.7K
R716
150
R728
IPCLK
MX25L1605AM2C-15G
IC703
IC703_USB
3
WP#
2
SO
4
GND
1
CS#
5
SI
6
SCLK
7
HOLD#
8
VCC
JP702
+1.8VDDC
RAMADD[0-3]
DUPRD0
SFDI
+3.3VDDP
0
R722
+1.8VDDA
RAMWE
0
R723
0.1uF
50V
C732
+1.8VDDC
MBW3216-501TF
L715
+3.3VDDP
27
R700
100uF
16V
C722
SFCLK
SFDO
0.1uF
C717
RAMADD[10]
0.1uF
C713
0
R740
READY
DEC_656[0]
USB_DN
22pF
C745
0.1uF
50V
C742
0.1uF
50V
C753
0.1uF
50V
C748
1K
R709
0
R741
READY
1/10W
1K
5%
R704
+3.3VDDP
0.1uF
C716
0.1uF
50V
C752
0
R725
5pF
50V
C709
RAMRAS
RAMBA[1]
0.1uF
50V
C739
SFDO
4.7K
R706
1/10W
1K
5%
R705
RAMBA[1]
0
R717
0.1uF
50V
C730
10uF
16V
C724
27
R701
+3.3VDDP
USB_DN
0
R720
0.1uF
50V
C729
RAMDQM
75
R737
+3.3VDDP
390
R733
15K
1%
R726
TX_MPEG
+1.8V
0.1uF
50V
C738
RAMCAS
12MHz
X702
SFCS
+3.3VDDP
+3.3VDDP
27MHz
X703
0.1uF
50V
C728
0
R739
SFCLK
+3.3V_USB
0.1uF
C712
0.1uF
50V
C726
+1.8VDDA
0.1uF
50V
C736
RAMBA[0]
JP701
220K
R732
USB_DP
+3.3VDDA
USB_DP
DUPRD0
0.1uF
50V
C731
0
R719
+3.3VDDP
0.1uF
50V
C727
SFDI
75
R734
RAMCAS
0.1uF
C725
75
R736
0.1uF
50V
C723
SFCS
RAMCS
RAMADD[11]
0.1uF
50V
C747
5.1K
READY
R702
IPCLK
47uF
16V
C714
RAMADD[4-9]
I2S_WS_IN
+1.8VDDC
0
R724
DEC_656_CLK
5.1K
READY
R703
0.1uF
50V
C744
0
R721
+1.8VDDA
0.1uF
50V
C749
MPEG_RESET
RAMDAT[8-15]
+5V_USB
SFCLK
0
R718
RAMWE
SFDI
I2S_CLK_IN
0.1uF
50V
C751
RAMADD[0-11]
75
R735
22pF
C746
0.1uF
50V
C743
+3.3VDDA
RAMDAT[0-7]
0.1uF
50V
C734
JP700
DEC_656[0-7]
0.1uF
50V
C737
0.1uF
50V
C741
1/10W
0
5%
R738
0.1uF
50V
C740
+3.3V_SDRAM
0.1uF
50V
C735
RX_MPEG
RAMDAT[0-15]
1/10W
56
5 %
R707
22uF
16V
C710
22uF
16V
C711
22uF
16V
C715
ZR36966PQCG-XD
IC707
U S
B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
HY57V641620FTP
IC704
26
A3
27
V D
D 3
28
VSS1
29
A4
30
A5
31
A6
32
A7
33
A8
34
A9
35
A11
36
NC1
37
C K
E
38
C LK
39
U D
Q M
40
NC2
41
VSS2
42
D Q
8
43
V D
D Q
3
44
D Q
9
45
DQ10
46
VSSQ3
47
DQ11
48
DQ12
49
V D
D Q
4
50
DQ13
17
C A
S
3
VDDQ1
6
VSSQ1
16
W E
15
L D
Q M
14
V D
D 2
13
D Q
7
12
VSSQ2
11
D Q
6
10
D Q
5
9
V D
D Q
2
8
D Q
4
7
D Q
3
4
DQ1
5
DQ2
25
A2
24
A1
23
A0
2
DQ0
22
A10/AP
21
BA1
1
VDD1
20
BA0
19
CS
18
R A
S
51
DQ14
52
VSSQ4
53
DQ15
54
VSS3
USB DOWN STREAM
KJA-UB-4-0004
P701
USB
1
2
3
4
5
+3.3VDDP
4.7K
READY
R742
OPT
L716
READY
4.7K
READY
R743
+5V_MULTI
12505WS-04A00
JK700
1
2
3
4
5
6.19K
R715
OCP_EN
22
R744
OCP_EN
FLASH_WP_ZORAN
+3.3VDDP
10K
R710
180
R708
10nF
50V
C754
READY
1K
R727
18pF
C720
18pF
C719
200
R729
READY
MIC2009YM6-TR
IC705
3
ENABLE
2
GND
4
FAULT/
1
VIN
6
VOUT
5
ILIMIT
120OHM
UBW2012-121F
L711
120OHM
UBW2012-121F
L712
120OHM
UBW2012-121F
L713
120OHM
UBW2012-121F
L714
120OHM
UBW2012-121F
READY
L717
120OHM
UBW2012-121F
L718
MLF2012A2R7JT000
L719
READY
220pF
50V
C755
READY
75
R712
75
R711
75
R714
75
R713
RAMADD[6]
DEC_656[5]
RAMADD[1]
RAMADD[8]
RAMDAT[7]
RAMADD[2]
DEC_656[3]
RAMDAT[6]
RAMADD[3]
RAMDAT[0]
RAMADD[9]
RAMDAT[12]
RAMDAT[5]
RAMADD[8]
DEC_656[2]
RAMDAT[10]
RAMDAT[2]
RAMDAT[4]
RAMADD[9]
RAMDAT[11]
RAMDAT[14]
DEC_656[6]
RAMDAT[7]
DEC_656[4]
RAMDAT[14]
RAMDAT[1]
RAMDAT[0]
RAMADD[11]
RAMDAT[13]
RAMDAT[13]
RAMDAT[4]
RAMDAT[8]
RAMDAT[10]
RAMDAT[3]
RAMDAT[12]
RAMADD[2]
RAMADD[6]
DEC_656[0]
RAMADD[0]
RAMADD[5]
RAMADD[3]
RAMDAT[8]
RAMDAT[15]
RAMADD[7]
RAMADD[4]
RAMADD[4]
RAMADD[5]
RAMDAT[9]
DEC_656[1]
RAMADD[1]
RAMADD[0]
RAMADD[7]
RAMDAT[5]
RAMDAT[15]
RAMDAT[9]
RAMDAT[2]
RAMDAT[1]
RAMADD[10]
RAMDAT[6]
RAMDAT[11]
DEC_656[7]
RAMDAT[3]
7 11
MSTAR N-EU
USB/MPEG DEC
** 1A Design
* R732 Video Output Level Reference
C709 :EMI Solution
placed as close to Connector as possible.
External F/W Download
Capacitors on VBUSA should be
For Initial Download
DEC_656[0] : DUPTD0
* Analog Video Option
ZORAN I2C strobe ready
DUPTD0
* R715 Recommendation is 6.19k 1%
Originally 392 ohm 1%
DEBUG TEST OPTION
* R732 Video Output Level Refere
nc
to meet USB2.0 HS cert
ZORAN SRAM Board F/W Download
Itís possibel to 27~47ohm
Connect to Main IC(CCIR656 Interface)
TOP SIDE!
2008/01/08
USB/MPEG DEC
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