LG 22LF15R (CHASSIS:LP81K) 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.
0.47uF
16V
C914
RS232C
560pF
50V
C908
330pF
50V
C900
READY
330pF
50V
C903
PC_SOUND_L
S_VIDEO_Y
24V
ZD917
RS232C
V_CVBS
S_VIDEO_C
15K
R906
HEADPHONE_OUT_L
24V
ZD919
RS232C
4.7K
R923
RS232C
560pF
50V
C911
S_VIDEO_DET
RS232C_RXD
330pF
50V
C910
100
R918
RS232C
330pF
50V
C904
10K
R914
V_AUDIO_R
4.7K
R922
RS232C
V_AUDIO_L
PC_SOUND_R
330pF
50V
C909
RS232C_TXD
PSJ014-01
JK902
GND
6
1
C-LUG1
2
C-LUG2
3
0-SPRING
4
C-LUG3
5
C-LUG4
SHIELD
7
0.47uF
16V
C916
RS232C
560pF
50V
C905
0.47uF
16V
C915
RS232C
15K
R907
10K
R915
330pF
50V
C901
PEJ024-01
JK903
6B
T_TERMINAL2
8
SHIELD_PLATE
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
24V
ZD918
RS232C
0.47uF
16V
C917
RS232C
100
R919
RS232C
5.6B
ZD902
10uF
16V
C919
RS232C
560pF
50V
C906
330pF
50V
C902
HP_DET
24V
ZD920
RS232C
HEADPHONE_OUT_R
470K
R908
470K
R903
470K
R904
470K
R905
330pF
50V
C907
READY
75
R901
75
R902
75
R900
5.6B
ZD911
5.6B
ZD907
5.6B
ZD912
5.6B
ZD901
5.6B
ZD900
5.6B
ZD903
5.6B
ZD904
5.6B
ZD908
5.6B
ZD906
5.6B
ZD910
5.6B
ZD909
5.6B
ZD905
5.6B
ZD913
5.6B
ZD915
5.6B
ZD916
5.6B
ZD914
12
R921
8ohm speaker
12
R920
8ohm speaker
0.47uF
C918
READY
9.1K
R911
8ohm speaker
9.1K
R912
8ohm speaker
1uF
10V
C912
1uF
10V
C913
10K
R917
8ohm speaker
10K
R916
8ohm speaker
8OHM
L901
8OHM
L900
8OHM
L905
8OHM
L906
8OHM
L907
READY
R924
MBW3216-501TF
L908
RS232C
IR_OUT
PPJ148-07
JK900
2
[YL]O-SPRING
1
[YL]GND
3
[YL]CONTACT
4
[WH]GND
5
[WH]C-LUG-L
6
[RD]GND
7
[RD]O-SPRING
8
[RD]CONTACT
ST_5V
ST_3.3V
ST_3.3V
PEJ024-01
JK901
6B
T_TERMINAL2
8
SHIELD_PLATE
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
ST3232CDR
IC900
RS232C
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
T2OUT
8
R2IN
9
R2OUT
10
T2IN
11
T1IN
12
R1OUT
13
R1IN
14
T1OUT
15
GND
16
VCC
0
R925
0
R926
0
R913
KCN-DS-1-0088
P900
RS232C
1
2
3
4
5
6
7
8
9
10
CVBS
S_Video
PC SOUND INPUT
Headphone
8 9
RS232C_RX
RS232C_TX
RS_232C
2007/11/19
LP81K
OUTER JACK
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.
470K
R806
22
R805
470K
R809
C O
M P_
Y +
C O
M P_
S O
U N
D _L
C O
M P_
S O
U N
D _R
10K
R810
PP
J2
09
-0
1
JK800
4A
[GN]CONTACT
2A
[GN]1P_CAN
3A
[GN]O_SPRING
2B
[BL]1P_CAN
5B
[BL]C_LUG_L
2C
[RD]1P_CAN1
5C
[RD]C_LUG_L
2D
[WH]1P_CAN
5D
[WH]C_LUG_L
2E
[RD]1P_CAN2
4E
[RD]CONTACT
3E
[RD]O_SPRING
10K
R807
1000pF
50V
C800
COMP_Pr+
22
R801
COMP_Pb+
22
R803
1000pF
50V
C801
75
R800
75
R802
75
R804
5.6B
ZD800
5.6B
ZD801
5.6B
ZD802
5.6B
ZD803
5.6B
ZD804
5.6B
ZD805
5.6B
ZD806
5.6B
ZD807
10K
R808
8ohm speaker
10K
R811
8ohm speaker
BG2012B080TF
8OHM
L800
BG2012B080TF
8OHM
L801
COMPONENT
LP81K
2007/11/19
7 9
COMPONENT
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
R702
DSUB_SDA
100
R703
PC_B+
PC_VSYNC
DSUB_SCL
PC_R+
100
R713
HD_5V
DDC_CTL
4.7K
R723
DSUB_SDA
0.1uF
50V
C706
4.7K
R722
HDMI_SCL
DDC_CTL
HDMI_SDA
PC_HSYNC
PC_G+
DSUB_SCL
0.1uF
50V
C703
75
R725
75
R724
75
R726
5.
6B
ZD701
5.
6B
ZD705
5.
6B
ZD702
5.
6B
ZD703
R E
A D
Y
5.
6B
ZD704
10K
R719
MMBD301LT1G
30V
D702
68
R736
68
R735
0
R741
0
R738
READY
33
R737
68pF
50
V
C710
68pF
50
V
C711
4.7K
R739
4.7K
R740
100
R717
68pF
50
V
C712
68pF
50
V
C713
0.1uF
5
0
V
C714
0.1uF
50V
C716
0.1uF
50V
C717
0.1uF
50V
C718
33
R742
AT24C02BN-10SU-1.8
IC702
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
AT24C02BN-10SU-1.8
IC701
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
HDMI_SCL
HPDCTL
G_TX1-
TXCLK-
HD_5V
10K
R733
0.1uF
50V
C702
100
R743
CM2021-00TR
IC700
26
NC4
27
TMDS_D0-
28
TMDS_GND6
29
NC5
30
TMDS_D1-
31
TMDS_GND5
32
NC6
33
TMDS_D2-
34
TMDS_GND4
35
NC7
36
GND1
17
DDC_CLK_IN
3
GND0
6
NC0
16
CE_REMOTE_IN
15
NC3
14
TMDS_GND3
13
TMDS_CK+
12
NC2
11
TMDS_GND2
10
TMDS_D0+
9
NC1
8
TMDS_GND1
7
TMDS_D1+
4
TMDS_D2+
5
TMDS_GND0
2
3.3V_SUPPLY
21
DDC_DAT_OUT
1
5V_SUPPLY
20
HOTPLUG_DET_OUT
19
HOTPLUG_DET_IN
18
DDC_DAT_IN
23
CE_REMOTE_OUT
24
TMDS_CK-
25
TMDS_GND7
22
DDC_CLK_OUT
37
TMDS_VDD
38
NC8
0
R730
B_TX0+
HDMI_SDA
G_TX1+
B_TX0-
TXCLK+
ST_3.3V
R_TX2-
0
R731
1K
R700
0.1uF
50V
C700
10K
R734
5V_G
R_TX2+
0.1uF
50V
C701
0
R732
4.7K
R704
4.7K
R714
2SC3052
Q700
E
B
C
ENKMC2838-T112
D700
A1
C
A2
ENKMC2838-T112
D701
A1
C
A2
ENKMC2837-T112
D706
A
A C
C
ENKMC2837-T112
D705
A
A C
C
ENKMC2837-T112
D704
A
A C
C
KCN-DS-1-0089
J701
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
MMBD301LT1G
30V
D708
CEC
A
C
0
READY
R747
CEC
CEC_C
BSS83
Q701
CEC
S
B
D
G
200
R746
CEC
0.01uF
50V
READY
C719
ST_3.3V
51K
R744
CEC
ST_3.3V
30K
READY
R748
0
READY
R745
CDS3C30GTH
30V READY
D707
ST_5V
ST_5V
ST_5V
CEC
10K
R750
10K
R751
10K
R749
HDMI_5V_DET
HD_5V
MMBD301LT1G
30V
D709
10K
R752
0
R753
READY
0
R710
0
R711
0
R712
0
R708
0
R709
0
R706
0
R707
0
R705
QJ41193-FEE2-7F
J700
1
2
3
4
5
6
7
8
9
10
11
CLK_SHIELD
12
CLK-
13
CEC
14
NC
15
SCL
16
SDA
17
DDC/CEC_GND
18
+5V_POWER
19
HPD
20
21
22
VGA
6 9
HDMI&VGA
5V_DSUB
2007/11/19
LP81K
HDMIˇˇˇÀ
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.
330
R609
0.027uF
C610
27pF
C601
0
R615
IF_AUDIO_OUT
0
R616
4.7K
R611
2SA1530A-T112-1R
Q601
E
B
C
220
R619
0.1uF
C607
0
R606
SCL_Part
100
R605
READY
0
R612
2SA1530A-T112-1R
Q600
E
B
C
IF_VIDEO_OUT
SIF_OUT
4.7K
R602
5V_TUNER
220
R620
TAFT-Z703D
NON EU TUNER
TU600
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
0
R600
330
R608
0
READY
R617
5V_TUNER
5V_TUNER
4.7K
R603
5V_TUNER
82
READY
R610
1K
R621
SDA_TUNER
4.7K
R614
4.7K
R604
0
READY
R618
SDA_Part
5V_TUNER
4700pF
C609
270pF
READY
C608
ST_3.3V
SCL_TUNER
1K
R622
0.01uF
C602
0
READY
R613
27pF
C603
0.01uF
C605
READY
100pF READY
C600
0.01uF
C604
4.7uF
35V
READY
C606
5V_TUNER
RT1C3904-T112
Q602
E
B
C
470
R607
0
R601
READY
100uF
16V
C611
BLM18BD102SN1D
L600
READY
TAFT-H703F
TU600-*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
120-ohm
L601
5 9
TUNER
2007/11/19
LP81K
TUNER
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