LG 28LB45 series, Service Manual

Page: 23 / 32

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2013/05/23
HDMI 8
MA55
CK-_HDMI1
R807 0
(OPT)HDMI_ARC
R801
1K
MT45/MT55
5V_HDMI_2
VA807
20V
OPT
VA809
20V
OPT
D1-_HDMI2
R809 47K
MT45/MT55
JK801
EAG61491201
MT45/MT55
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
D2-_HDMI1
D0-_HDMI2
R805
10K
MT45/MT55
VA800
20V
OPT
VA808
20V
OPT
VA813
20V
LB45/MT55
HDMI_CEC
CK+_HDMI2
DDC_SCL_2
D0-_HDMI1
JK800
EAG61491201
LB45/MT55
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
VA812
20V
MT45/MT55
5V_DET_HDMI_1
Q800
MMBT3904(NXP)
MT45/MT55
E
B
C
D1+_HDMI1
DDC_SDA_1
HPD1
5V_DET_HDMI_2
D800-*1
IP4283CZ10-TBA
(OPT)ESD_HDMI_NXP
3
GND_1
2
T
4
TMDS_CH2-
1
TMDS_CH1-
5
T
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4 D1-_HDMI1
R803 47K
LB45/MT55
VA801
20V
OPT
VA802
20V
OPT
D802
RCLAMP0524PA
(OPT)ESD_HDMI2_SEMTECH(DEV)
1
8
2
7
3
6
4
5
9
10
VA814
20V
MT45/MT55
VA811
20V
LB45/MT55
MHL_CD_SENSE
D801-*1
IP4283CZ10-TBA
(OPT)ESD_HDMI_NXP
3
GND_1
2
T
4
TMDS_CH2-
1
TMDS_CH1-
5
T
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4
R810 47K
LB45/MT55
DDC_SDA_2
HDMI_CEC
DDC_SCL_1
R800
1K
OPT
+3.3V_ST
5V_HDMI_1
D2-_HDMI2
Q802
MMBT3904(NXP)
MT45/MT55
E
B
C
CK-_HDMI2
VA803
20V
OPT
D803
RCLAMP0524PA
(OPT)ESD_HDMI2_SEMTECH(DEV)
1
8
2
7
3
6
4
5
9
10
HPD2
R806
10K
LB45/MT55
D0+_HDMI2
Q803
MMBT3904(NXP)
OPT
E
B
C
C800
0.047uF
25V
LB45
CK+_HDMI1
R802 47K
MT45/MT55
D0+_HDMI1
D1+_HDMI2
HDMI_ARC
D800
RCLAMP0524PA
(OPT)ESD_HDMI1_SEMTECH(DEV)
1
8
2
7
3
6
4
5
9
10
R817
300K
LB45
VA804
OPT
R804 0
(OPT)HDMI_ARC
VA806
20V
OPT
R812
10K
MT45/MT55
D801
RCLAMP0524PA
(OPT)ESD_HDMI1_SEMTECH(DEV)
1
8
2
7
3
6
4
5
9
10
Q801
MMBT3904(NXP)
LB45/MT55
E
B
C
D2+_HDMI2
VA805
OPT
VA810
OPT
5.6V
HDMI_ARC
R814
10K
OPT
D2+_HDMI1
+3.3V_ST
+5V_Normal
+5V_Normal
R821
10K
LB45
R830
10K
LB45
IC800
BD82020FVJ
LB45
3
IN_2
2
IN_1
4
EN
1
GND
5
OC
6
OUT_1
7
OUT_2
8
OUT_3
R823
100
/MHL_OCP_DET
CEC_REMOTE_S7
R828
10K
LB45
D805
30V
MBR230LSFT1G
LB45
D806
MMBD6100
LB45/MT55
A
2
C
A
1
DDC_SCL_2
R820
2.7K
MT45/MT55
R831
10K
LB45
HDMI_CEC
R824
2.7K
LB45/MT55
C801
10uF
10V
LB45
R818
10
+3.3V_Normal
Q807
LB45
E
B
C
C802
0.1uF
16V
LB45
DDC_SCL_1
R829
2.7K
LB45
R825
2.7K
LB45/MT55
DDC_SDA_1
AVDD5V_MHL
+3.3V_ST
Q808
LB45
E
B
C
D804
MMBD6100
MT45/MT55 A
2
C
A
1
D807
MMBD6100
LB45/MT55
A
2
C
A
1
MHL_OCP_EN
+5V_Normal
DDC_SDA_2
5V_HDMI_2
R822
100K
OPT
R819
2.7K
MT45/MT55
R827
10K
LB45
+3.3V_Normal
Q806
LB45
E
B
C
/VBUS_EN
5V_HDMI_2
R826
20K
LB45
LB45
5V_HDMI_1
R808
0
NON MHL
R813
0
LB45
D802-*1
IP4283CZ10-TBA
(OPT)ESD_HDMI_NXP
3
GND_1
2
T
4
TMDS_CH2-
1
TMDS_CH1-
5
T
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4
D803-*1
IP4283CZ10-TBA
(OPT)ESD_HDMI_NXP
3
GND_1
2
T
4
TMDS_CH2-
1
TMDS_CH1-
5
T
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4
R811
33
LB45/MT55
+5V_MHL_Separate
R816
0
5V MHL Normal
R815
0
(OPT)5V MHL Separate
HDMI_1
120825
ESD component addition
120715
Added for ESD prevention
120825
OPT->APPLY
HDMI
120715
Added for ESD prevention
120825
OPT->APPLY
120825
ESD component addition
HDMI_2 With MHL
(Active High)
(Active Low)
MHL OCP
120915
47K->2.7K
CEC
121109
Change 0ohm -> 10ohm
(EOS Issue..Mstar Recommand)
LB45 only
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