LG 28LB45 series Service Manual page 23

HDMI
HDMI_1
+3.3V_ST
MT45/MT55
R805
10K
OPT
5V_HDMI_1
VA804
MT45/MT55
SHIELD
MT45/MT55
R801
20
1K
19
OPT
OPT VA809
18
20V
VA803
20V
17
16
15
R804 0
14
(OPT)HDMI_ARC
13 OPT OPT
VA800 VA806
12
20V 20V
(OPT)ESD_HDMI1_SEMTECH(DEV)
D800
11
CK+
RCLAMP0524PA
10
1
D0-
2
9
3
D0_GND
8
4
D0+
5
7
D1- 120825
6 ESD component addition
D1_GND
(OPT)ESD_HDMI1_SEMTECH(DEV)
5
D801
D1+
RCLAMP0524PA
4
1
D2-
2
3
3
D2_GND
2
4
D2+
5
1
JK801
HDMI_2 With MHL
+3.3V_ST
LB45/MT55
R806
10K
OPT
5V_HDMI_2 VA805
OPT
SHIELD
R800
20 1K
19
OPT
VA808
18 OPT
20V
VA802
17
20V
16
15
R807
14
(OPT)HDMI_ARC
13
OPT OPT
VA801 VA807
(OPT)ESD_HDMI2_SEMTECH(DEV)
12 20V 20V
D802
11 RCLAMP0524PA
CK+ 1
10
2
D0-
9 3
D0_GND 4
8
5
D0+
7
120825
ESD component addition
D1-
6
(OPT)ESD_HDMI2_SEMTECH(DEV)
D1_GND
D803
5
RCLAMP0524PA
D1+ 1
4
2
D2-
3 3
D2_GND 4
2
5
D2+
1
NON MHL
R808
0
JK800
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.
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5V_DET_HDMI_1
C
Q800
B
MMBT3904(NXP)
MT45/MT55
E
HPD1
MT45/MT55
C
MT45/MT55
R812
Q802 B 10K
MMBT3904(NXP)
E
DDC_SDA_1
DDC_SCL_1
MT45/MT55 MT45/MT55
HDMI_ARC
VA812 VA814
HDMI_CEC
20V 20V
120715
Added for ESD prevention
10 120825
CK-_HDMI1 OPT->APPLY
9
CK+_HDMI1
8
7
D0-_HDMI1
6
D0+_HDMI1
D800-*1 D801-*1
IP4283CZ10-TBA IP4283CZ10-TBA
10
D1-_HDMI1 TMDS_CH1- NC_4 TMDS_CH1- NC_4
1 10 1 10
9
D1+_HDMI1 TMDS_CH1+ NC_3 TMDS_CH1+ NC_3
2 9 2 9
8
7 GND_1 GND_2 GND_1 GND_2
3 8 3 8
D2-_HDMI1
6 TMDS_CH2- NC_2 TMDS_CH2- NC_2
4 7 4 7
D2+_HDMI1
TMDS_CH2+ NC_1 TMDS_CH2+ NC_1
5 6 5 6
(OPT)ESD_HDMI_NXP (OPT)ESD_HDMI_NXP
5V_DET_HDMI_2
C
Q801
B
MMBT3904(NXP)
LB45/MT55
E
LB45/MT55
R811
33
OPT
C
OPT
R814
10K
Q803 B
HPD2
MMBT3904(NXP)
E
DDC_SDA_2
DDC_SCL_2
0
HDMI_ARC
LB45/MT55 LB45/MT55
VA811 VA813
HDMI_CEC
20V 20V
120715
Added for ESD prevention
10
120825
CK-_HDMI2
9 OPT->APPLY
CK+_HDMI2 D802-*1 D803-*1
8 IP4283CZ10-TBA IP4283CZ10-TBA
7
TMDS_CH1- NC_4 TMDS_CH1- NC_4
D0-_HDMI2 1 10 1 10
6
D0+_HDMI2 TMDS_CH1+ NC_3 TMDS_CH1+ NC_3
2 9 2 9
GND_1 GND_2 GND_1 GND_2
3 8 3 8
TMDS_CH2- NC_2 TMDS_CH2- NC_2
4 7 4 7
TMDS_CH2+ NC_1 TMDS_CH2+ NC_1
5 6 5 6
10
D1-_HDMI2 (OPT)ESD_HDMI_NXP (OPT)ESD_HDMI_NXP
9
D1+_HDMI2
8
7
D2-_HDMI2
6
D2+_HDMI2
LB45
R813
0
MHL_CD_SENSE
LB45
C800
R817 LB45
0.047uF
300K
25V
CEC
R823
100
HDMI_CEC CEC_REMOTE_S7
5V_HDMI_1 +5V_Normal
MHL OCP
MT45/MT55
MMBD6100
D804
AVDD5V_MHL
MT45/MT55 MT45/MT55
R819 R820
2.7K 2.7K
DDC_SDA_1
DDC_SCL_1
121109
Change 0ohm -> 10ohm
(EOS Issue..Mstar Recommand)
5V_HDMI_2 +5V_Normal
+3.3V_ST
/MHL_OCP_DET
MMBD6100 MMBD6100
D806 D807
120915
R824 R825 47K->2.7K
2.7K 2.7K
DDC_SDA_2
DDC_SCL_2
5V_HDMI_2
LB45
IC800
BD82020FVJ +5V_Normal +5V_MHL_Separate
LB45
D805
MBR230LSFT1G OUT_3 GND 5V MHL Normal
8 1
R816
(OPT)5V MHL Separate
R818 30V
0
10 OPT R815
C801
100K OUT_2 IN_1 0
10uF 7 2
R822
10V
C802
LB45
0.1uF
OUT_1 IN_2
16V
6 3
LB45
OC EN
5 4
+3.3V_Normal
Q806
LB45
R821
R826
10K 20K
LB45
LB45 R827
10K
LB45
C
E
LB45 only
MA55
HDMI
+3.3V_Normal
R828 R829
10K 2.7K
LB45 LB45
C
R830
10K
B
/VBUS_EN
LB45
(Active Low)
E Q808
LB45 LB45
R831
10K
B
MHL_OCP_EN
LB45
Q807
(Active High)
LB45
2013/05/23
8
LGE Internal Use Only