LG 32LF15R (CHASSIS:LP81A) 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.
JP600
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-
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
JP601
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
10K
R616
NON HOTEL_OPT
10K
R613
NON HOTEL_OPT
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
15K
HOTEL_OPT
R613-*1
15K
HOTEL_OPT
R616-*1
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
100
R614
100
R615
+12V
+12V
SPK_L-
+3.3V_1
+3.3V_1
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
EAX40043809
MSTAR LP81A
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.
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
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
A
FT
13
V-OUT
5
RF_AGC
12
NC_4
11
A
S
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
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
56pF
C513
LG70_TUNER
TUNER
5 11
MSTAR
EAX40043809
MSTAR LP81A
Near the pin
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.
EAM38769502
L402
EAM38769502
L406
BG1608B121F
EAM38769502
L403
KRC102S
Q403
NOT LG60
E
B
C
IR_OUT
100
R410
NOT LG60
LED_R_PWM_Big
SDA_LED
AC_DET
+3.3V_MST
SPK-N
LED_R/PWM
3.3K
R417
READY
4.7K
R420
47pF
C403
BG1608B121F
EAM38769502
L400
LED_G
10K
R434
NOT LG60
+5V_ST
0.1uF
C408
KEY2
KEY1
470pF
C404
4.7K
R421
0.1uF
C411
3.3K
R435
NOT LG60
0
READY
R425
OPT
C407
470pF
C412
10K
R409
READY
SCL_LED
+5V_ST
EYEQ_RESET
470pF
C401
NOT LG60
EAM38769502
L401
NOT LG60
22uF
16V
C414
USE LG50_60_70
12505WS-15A00
P400
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
TXCE0+,TXCE0-,TXCE1+,TXCE1-,TXCE2+,TXCE2-,TXCE3+,TXCE3-,TXCLKE+,TXCLKE-
4.7K
RE
A
D
Y
R401
0
R424
+3.3V_HD
TXCE0+,TXCE0-,TXCE1+,TXCE1-,TXCE2+,TXCE2-,TXCE3+,TXCE3-,TXCE4+,TXCE4-,TXCLKE+,TXCLKE-
+3.3V
4.7K
+3.3V_FHD
R407
0
READY
R432
0
R408
+3.3V
0
READY
R431
TXCLKO+,TXCLKO-,TXCO0+,TXCO0-,TXCO1+,TXCO1-,TXCO2+,TXCO2-,TXCO3+,TXCO3-,TXCO4+,TXCO4-
0
R402
8BIT or 52 sharp
2SA1530A-T112-1R
Q402
NOT LG60
E
B
C
SMAW200-40C
P402
FHD
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
SMW200-26C
P403
HD_NORMAL
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
25
26
3.3K
R413
0.1uF
C400
0
HD
R438
+5V_ST
OPT
READY
C402
10K
R440
IR-OUT
10K
R443
IR-OUT
+5V_ST
10K
R441
IR-OUT
47K
R439
IR-OUT
22
R442
IR-OUT
IR
10K
R414
LG60
10K
READY
R403
22uF
16V
C406
+3.3V_MST
5.
6B
ZD400
LG60
2SC3052
Q405
IR-OUT
E
B
C
2SC3052
Q404
IR-OUT
E
B
C
2SA1530A-T112-1R
Q406
LG60
E
B
C
+5V_ST_SW
3.3K
R445
LG60
3.3K
R444
LG60
0
CPT
R428
0
READY
R415
0
NOT LG60
R404
0
R405
UBW2012-121F
120OHM
L404
UBW2012-121F
120OHM
L407
USE LG50_60_70
BG1608B501F
L410
BEAD_USE LG50_60_70
BG1608B501F
L411
BEAD_USE LG50_60_70
0
L411-*1
R_USE LG50_60_70
0
L410-*1
R_USE LG50_60_70
VCC_LCD
5.
6B
ZD401
USE LG50_60_70
5.
6B
ZD402
USE LG50_60_70
0
R423
USE LG50_60_70
0
R422
USE LG50_60_70
SMAW200-26C
P403-*1
HD_ATN
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
25
26
VCC_LCD
9.1K
+12V_FHD
R411
3.3K
+12V_FHD
R412
TXCE3+
TXCO2+
TXCE1-
TXCLKE-
TXCE2-
TXCE2+
TXCE1+
TXCO0+
TXCE0+
TXCE2+
TXCE1+
TXCO1+
TXCO3+
TXCLKE+
TXCE3+
TXCO4+
TXCO1-
TXCO0-
TXCO3-
TXCLKE+
TXCLKO+
TXCE3-
TXCO4-
TXCLKE-
TXCE0+
TXCO2-
TXCE1-
TXCE0-
TXCE0-
TXCE4-
TXCE3-
TXCE2-
TXCLKO-
TXCE4+
VCC_LCD
LVDS,CTR KEY
4 11
MSTAR
CONTROL KEY
NOT LG60
PANEL WAFER
*LG6 Sound module output
FHD
HD
2SC3052(P/N:0TRIY80001A) RA:2SC3875(P/N:0TR387500AA)
**MULTI ITEM
NC
NC
FHD 8BIT:NC
FHD 8BIT:NC
FHD 8BIT:NC
FHD 8BIT:NC
EAX40043809
MSTAR LP81A
R428
CPT
LPL
R401
R402
10BIT
8BIT(HD)
8BIT(FHD)
0
X
52 sharp
0
LG60
LG30
R404
R444
R445
Q406
X
X
32 sharp
X
O
X
3.3K
3.3K
O
O
X
XX
X
R407
R424
+3.3V_HD
+3.3V_FHD
X
O
4.7K
X
X
L410
L411
O
LG50
X
X
X
O
LG70
X
X
X
BEAD
BEAD
BEAD
BEAD
BEAD
BEAD
BEAD
BEAD
X
L407
BEAD
22uF
X
C414
22uF
22uF
X
R414
X
10K
X
2008/01/08
+12V_FHD
3.3K
R412
9.1K
R411
32 sharp
X
X
XX
XX
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.
TMDS3_RX2-
TMDS3_RXC-
HPD_S/W_2
TMDS2_RXC-
1K
R319
+5V_HDMI_2
HDMI_SEL1
TMDS3_RXC-
HDMI_C-
HDMI_SCL
HDMI_0-
10K
R351
HPD_MST_2
TMDS3_RX0+
TMDS2_RX2-
HDMI_C+
TMDS1_RX0+
+5V_HDMI_3
4.7K
R362
CEC_C
DDC_SCL1
CEC
TMDS1_RX1-
HDMI1_5V_DET
TMDS2_RX1+
HDMI3_5V_DET
TMDS2_RXC-
TMDS2_RXC+
0.01uF
C310
1K
R344
SIDE_HDMI
10K
R300
0.01uF
C315
HDMI_0+
+3.3V_MULTI_MST
1K
R310
+3.3V
CEC
DDC_SDA2
0.01uF
C314
TMDS3_RX2+
TMDS1_RXC-
HDMI_1-
0.01uF
C316
10K
R328
HPD_S/W_1
TMDS2_RX0+
TMDS2_RX0+
0.01uF
C308
TMDS3_RX0-
HDMI_2-
HPD_S/W_3
TMDS3_RX0-
TMDS3_RX1+
HDMI2_5V_DET
10K
R324
0
R E
A D
Y
R369
TMDS3_RXC+
DDC_SCL3
TMDS1_RXC+
+3.3V_MULTI_MST
+5V_HDMI_2
HPD_S/W_2
HPD_MST_1
CEC
BSS83
Q306
S
B
D
G
10K
R335
SIDE_HDMI
TMDS1_RX1+
TMDS3_RX1-
TMDS2_RXC+
0
R370
R370
R E
A D
Y
TMDS1_RX2+
4.7K
R375
READY
0
R373
TMDS2_RX1+
TMDS1_RX0-
+3.3V_HDMI_SW
+5V_ST
4.7K
R361
0
R356
TMDS2_RX2-
+5V_HDMI_1
TMDS3_RX2-
TMDS3_RX2+
0
R358
HDMI_1+
0.01uF
50V
READY
C307
TMDS2_RX0-
TMDS2_RX0-
TMDS1_RX1-
4.7K
R374
KDS184S
KDS184
D300
A2
C
A1
10K
R329
TMDS2_RX1-
TMDS3_RX0+
0.01uF
C311
0.01uF
C312
TMDS1_RX2-
+5V_HDMI_3
TMDS3_RX1-
TMDS2_RX2+
HDMI_2+
HDMI_SEL2
TMDS1_RX2+
+5V_HDMI_1
10K
R352
TMDS3_RX1+
0.01uF
C309
0
R357
TMDS1_RXC-
0
R355
+5V_ST
TMDS3_RXC+
+5V_HDMI_3
+5V_ST
10K
R301
TMDS1_RX2-
+3.3V_HDMI_SW
+5V_HDMI_1
TMDS1_RX0-
TMDS2_RX1-
TMDS1_RX1+
HPD_S/W_1
0
R368
READY
10K
R325
0
R347
CEC
HDMI_SDA
DDC_SCL2
+5V_HDMI_2
HPD_S/W_3
TMDS1_RX0+
TMDS2_RX2+
0
R345
KDS184S
KDS184
D303
A2
C
A1
DDC_SDA1
0
R346
TMDS1_RXC+
CDS3C30GTH
30V
D302
READY
HPD_MST_3
DDC_SDA3
KDS184S
KDS184
D301
A2
C
A1
0
R350
47K
R330
47K
R331
47K
R326
47K
R327
47K
R354
47K
R353
0
READY
R365
0
READY
R376
M M
B D
3 01
L T
1 G
30V
D304
A
C
DDC_SDA2 DDC_SCL2
DDC_SDA1 DDC_SCL1
DDC_SDA3 DDC_SCL3
TMDS351PAGR
IC302
1
SDA3
2
SCL3
3
GND_1
4
B31
5
A31
6
VCC_1
7
B32
8
A32
9
GND_2
10
B33
11
A33
12
VCC_2
13
B34
14
A34
15
GND_3
16
VSADJ
17
Y4
18
Z4
19
VCC_3
20
Y3
21
Z3
22
GND_4
23
Y2
24
Z2
25
VCC_4
26
Y1
27
Z1
28
GND_5
29
SCL_SINK
30
SDA_SINK
31
HPD_SINK
32
S1
33
S2
34
EQ
35
HPD1
36
SDA1
37
SCL1
38
B11
39
A11
40
VCC_5
41
B12
42
A12
43
GND_6
44
B13
45
A13
46
VCC_6
47
B14
48
A14
49
VDD
50
HPD2
51
SDA2
52
SCL2
53
B21
54
A21
55
VCC_7
56
B22
57
A22
58
GND_7
59
B23
60
A23
61
VCC_8
62
B24
63
A24
64
HPD3
0
READY
R383
0.01uF
50V
C301
0.01uF
50V
C313
0.01uF
50V
C300
51K
R333
30K
R334
READY
4.7K
1%
R372
JP1115
JP1116
JP1117
JP1118
JP1119
JP1120
2SC3875S
RT1C3904-T112
Q300
E
B
C
2SC3875S
RT1C3904-T112
Q301
E
B
C
2SC3875S
RT1C3904-T112
Q307
SIDE_HDMI
E
B
C
DC1R019NBH
JK303
SIDE_HDMI
14
N
C
13
CEC
5
DATA1_SHIELD
20
JACK_GND
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
1
0
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
1
6
SDA
7
DATA0+
6
DATA1-
1
5
SCL
47K
R371
+3.3V
200
R332
QJ41193-FEE2-7F
JK302
1
DATA2+
2
DATA2_SHIELD
3
DATA2-
4
DATA1+
5
DATA1_SHIELD
6
DATA1-
7
DATA0+
8
DATA0_SHIELD
9
DATA0-
1
0
CLK+
11
CLK_SHIELD
12
CLK-
13
CEC
14
NC
15
SCL
16
SDA
17
DDC/CEC_GND
18
+5V_POWER
19
HPD
2
0
JACK_GND
21
.
22
.
QJ41193-FEE2-7F
JK301
1
DATA2+
2
DATA2_SHIELD
3
DATA2-
4
DATA1+
5
DATA1_SHIELD
6
DATA1-
7
DATA0+
8
DATA0_SHIELD
9
DATA0-
10
CLK+
11
CLK_SHIELD
12
CLK-
13
CEC
14
NC
15
SCL
16
SDA
17
DDC/CEC_GND
18
+5V_POWER
19
HPD
20
JACK_GND
21
.
22
.
AT24C02BN-10SU-1.8
IC300
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
AT24C02BN-10SU-1.8
IC301
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
AT24C02BN-10SU-1.8
IC303
SIDE_HDMI
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
+5V_MULTI
KDS184S
KDS184
D305
A2
C
A1
+5V_ST
0
R359
R E
A D
Y
4.7K
R360
READY
+3.3V_MULTI_MST
100
R323
100
R322
100
R320
100
R321
100
R348
100
R349
22
R378
22
R377
22
R382
22
R381
22
R379
22
R380
4.7K
READY
R366
*TI Recommand
-> Pull up
HDMI
3 11
MSTAR N-EU
OPTION
SW_HPD : USE SW HPD (Default)
MST_HPD : USE MST HPD
**MULTI ITEM
1.24C02-SUB:0IMMRAL014D
2.SMD HDMI Jack-SUB:6612B00015B
EAX40043809
MSTAR LP81A
2008/01/08
Click on the first or last page to see other 32LF15R (CHASSIS:LP81A) service manuals if exist.