LG 28LN45 Series Service Manual page 33

SCART / COMPONENT&CVBS SCART / COMPONENT&CVBS
COMPONENT&CVBS
121017
5.6B R2822
Change ZD2806
75
5.6B
ZD2807
OPT
D2817
5.6V
121128
[GN]E-LUG
Change
6A
[GN]O-SPRING
5.6B R2824
ZD2802 75
JP2810
5A
5.6B
[GN]CONTACT
ZD2803
4A
JP2811
[BL]E-LUG-S
7B
121017
[BL]O-SPRING
Change
5.6B
5B ZD2804
[RD]E-LUG-S JP2814
R2823
5.6B
75
ZD2805
7C
[RD]O-SPRING_1
5C
JP2815
[RD]CONTACT_1
(OPT)COMP_ADC_FILTER_L(AUDIO)
4C
5D
[WH]O-SPRING R2825 C2837
JP2812 D2815
1000pF
20V 470K
50V
4E
[RD]CONTACT_2
(OPT)COMP_ADC_FILTER_L(AUDIO)
5E
[RD]O-SPRING_2 CM2012FR10KT
JP2813
6E D2816
[RD]E-LUG C2838
20V R2826
PPJ234-05 1000pF
470K
50V
JK2800
121229
121019
Option -> Apply for ESD
ADC_FILTER(AUDIO) ADD
FULL SCART
AV_DET 5.6B
ZD2800
22
COM_GND 5.6B
ZD2801
21
SYNC_IN
JP2802
20
JP2803
SYNC_OUT
19
SYNC_GND2
121219 D2802 OPT
18 OPT->APPLY 20V D2809
SYNC_GND1 20V
17
RGB_IO JP2804
16
R_OUT JP2805
15
RGB_GND 120927 D2803
14 20V
OPT->APPLY
R_GND
13
D2B_OUT
12
G_OUT
11
D2B_IN D2804
120927
20V
10 OPT->APPLY
G_GND
9
ID JP2800
8
B_OUT
JP2801
7
AUDIO_L_IN JP2806
D2805
6 20V
B_GND
5
AUDIO_GND 120927
OPT->APPLY
4
AUDIO_L_OUT JP2807
3
AUDIO_R_IN
JP2808
2
AUDIO_R_OUT JP2809
D2806
1
20V
121128
JK2801 (OPT)ESD SCART Audio IN
PSC008-01
D2808
20V
121128
(OPT)ESD SCART Audio IN
OPT
D2807
5.6V
OPT
D2800
5.6V
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.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
COMP_NON_ADC_FILTER
L2807-*1
(OPT)COMP_ADC_FILTER_L
0
L2807
CM2012FR10KT
(OPT)COMP_ADC_FILTER (OPT)COMP_ADC_FILTER
+3.3V_Normal
C2829
C2830
47pF
47pF
50V
50V
R2837
R2838
10K
1K
C2813
0.1uF
COMP_NON_ADC_FILTER
16V
L2806-*1
0
(OPT)COMP_ADC_FILTER_L
L2806
CM2012FR10KT
(OPT)COMP_ADC_FILTER
(OPT)COMP_ADC_FILTER
C2827 C2828
47pF 47pF
50V 50V
COMP_NON_ADC_FILTER
(OPT)COMP_ADC_FILTER_L
L2805-*1
L2805
0
CM2012FR10KT
(OPT)COMP_ADC_FILTER
+3.3V_Normal
(OPT)COMP_ADC_FILTER
C2825
C2826
47pF
47pF
50V
50V
R2841
10K
R2842
1K
L2811 R2832
CM2012FR10KT
10K
OPT
COMP_L_IN
D2818
C2810
R2834 5.6V
47pF 12K
50V
(OPT)COMP_ADC_FILTER(AUDIO) COMP_NON_ADC_FILTER(AUDIO)
L2811-*1
0
L2812 R2831
10K
COMP_R_IN
C2811
R2833
47pF
12K
50V
(OPT)COMP_ADC_FILTER(AUDIO)
COMP_NON_ADC_FILTER(AUDIO)
L2812-*1
0
121118
+3.3V_Normal Change
R2808
4.7K
R2810
1K
SCART1_DET
OPT
D2810
20V
R2809
0
SC1_SOG_IN
SC1_CVBS_IN
OPT
C2802
R2807 C2800
220pF
47pF
75
50V
50V
R2816
75
R2815
22
SC1_FB
(OPT)SCART_ADC_FILTER_L
L2808 R2811
CM2012FR10KT
75
SC1_R+
(OPT)SCART_ADC_FILTER (OPT)SCART_ADC_FILTER
R2806 C2831 C2832
75 47pF 47pF
SCART_NON_ADC_FILTER
50V 50V
L2808-*1
(OPT)SCART_ADC_FILTER_L 0
L2809
CM2012FR10KT
SC1_G+
(OPT)SCART_ADC_FILTER (OPT)SCART_ADC_FILTER
C2833 C2834
R2802
47pF 47pF SCART_NON_ADC_FILTER
L2809-*1
75 50V 50V
0
R2814
(OPT)SCART_ADC_FILTER_L
L2810
CM2012FR10KT
SC1_B+
D2811
(OPT)SCART_ADC_FILTER (OPT)SCART_ADC_FILTER
20V
C2835 C2836
R2803
SCART_NON_ADC_FILTER
75 47pF 47pF
L2810-*1
50V 50V
0
(OPT)SCART_ADC_FILTER_L(AUDIO)
L2813
SCART_NON_ADC_FILTER(AUDIO) R2812
CM2012FR10KT 10K
L2813-*1
0
OPT
R2804 C2840 C2805
C2839 R2818
470K 47pF 330pF 12K
1000pF
50V
50V 50V
(OPT)SCART_ADC_FILTER(AUDIO)
(OPT)SCART_ADC_FILTER_L(AUDIO)
L2814
R2813
SCART_NON_ADC_FILTER(AUDIO)
CM2012FR10KT 10K
L2814-*1
0 OPT
C2806
C2842
R2805 C2841
R2819
470K 47pF 330pF
1000pF
12K
50V
50V 50V
(OPT)SCART_ADC_FILTER(AUDIO)
121019
ADC_FILTER(AUDIO) ADD
DTV/MNT_L_OUT
OPT
C2803 C2807
4700pF
1000pF 130124
50V Apply
DTV/MNT_R_OUT
OPT
C2808
C2804
4700pF
1000pF 130124
50V Apply
SCART AMP
121118
COMP_Y+/AV_CVBS_IN
SCART AMP IC change
AV_CVBS_DET
DTV/MNT_L_OUT
COMP_Pb+
COMP_Pr+
SCART1_Lout
COMP_DET
+3.3V_Normal
IC2801
C2812
MM1756DURE
0.1uF
C2814
0.1uF
VCC IN
6 1
DTV/MNT_VOUT
PS GND
5 2
OUT BIAS
4 3
C2815
4.7uF
15K
SC1_ID
R2817
3.9K
SC1_L_IN
SC1_R_IN
+12V_Normal
R2800
0
IC2800
AZ4580MTR-E1
130114
R2847
2.2K 33K->5.1K OUT1 VCC
8
1
R2852
C2821
5.1K IN1- OUT2
10uF 7
2
R2851
16V 470K
IN1+ IN2-
6
R2854 3
C2823 10K
33pF
R2855
VEE IN2+ 10K
5
4
R2848
5.6K
330pF 220K
C2820 R2845
CLOSE TO MSTAR
[SCART AUDIO MUTE]
DTV/MNT_L_OUT OPT(EU_SCART mute)
R2839
OPT(EU_SCART mute)
2K
OPT(EU_SCART mute)
D2819
Q2802 OPT(EU_SCART mute)
MMBD6100
MMBT3904(NXP) Q2804
MMBT3906(NXP)
C
OPT(EU_SCART mute) 3
1
DTV/MNT_R_OUT
R2840
2K C2816
OPT(EU_SCART mute)
2
0.1uF
Q2803
OPT(EU_SCART mute)
MMBT3904(NXP)
NC4_S7LRM
SCART&COMP
+5V_USB
130219 BJ.KIM
OPT
R2801
0
C2817
0.1uF
50V
130114
R2846
33K->5.1K 2.2K
DTV/MNT_R_OUT
R2853
C2822
5.1K
10uF
R2850
16V
470K
C2824
33pF
R2849
5.6K
SCART1_Rout
R2843 C2819
220K
330pF
CLOSE TO MSTAR
+3.3V_ST
OPT(EU_SCART mute)
R2844
10K
A2
SCART1_MUTE
A1
SB_MUTE
EAX65303801
2013.1.14
28 13
LGE Internal Use Only