Read LG 42LW5500-ZE / 42LW550T-ZE / 42LW550W-ZE / 42LW551C-ZE / 42LW5590-ZE (CHASSIS:LD12C) Service Manual online
THERMAL
THERMAL
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.
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.
R1824
12
D1806
100V
1N4148W
OPT
C1850
10uF
35V
SPK_R-
R1826
12
+24V
SDA3_3.3V
C1855
1uF
25V
1uF
25V
WOOFER
+3.3V_Normal
C1881
0.01uF
50V
0.01uF
50V
OPT
SPK_L-
R1830
12
R1812
100
WOOFER
R1816
100
SPK_WOOFER_R+
R1833
12
C1860
390pF
50V
WOOFER
R1808
100
R1831
12
WOOFER
SPK_R+
C1829
1000pF
50V
WOOFER
0.1uF
C1846
50V
C1882
0.01uF
50V
0.01uF
50V
OPT
0.1uF
C1875
50V
WOOFER
Q1801
2SC3052
E
B
C
SPK_L+
0.1uF
C1845
50V
WOOFER
R1825
12
C1863
390pF
50V
AMP_MUTE
D1805
100V
1N4148W
OPT
R1815
3.3K
R1822
12
WOOFER
C1805
1000pF
50V
WOOFER
R1821
12
WOOFER
C1808
10uF
10V
OPT
AUD_MASTER_CLK
C1853
22000pF
22000pF
50V
0.1uF
C1812
16V
WOOFER
C1862
390pF
50V
WOOFER
P1802
SMAW250-05
WOOFER
1
2
3
4
5
AUD_LRCK
C1820
10uF
10uF
10V
OPT
SPK_R-
SPK_WOOFER_R-
+24V_AMP
C1849
10uF
35V
WOOFER
AUD_LRCH
R1838
4.7K
WOOFER
0.1uF
C1844
50V
C1868
1uF
25V
1uF
25V
0.1uF
C1831
16V
WOOFER
0.1uF
C1801
50V
+24V_AMP
R1803
0
OPT
L1801
MLB-201209-0120P-N2
AMP_RESET_N
R1820
12
WOOFER
C1819
10uF
10V
OPT
D1802
100V
1N4148W
OPT
SPK_L-
C1825
0.1uF
16V
SPK_WOOFER_R-
C1854
22000pF
50V
22000pF
50V
C1871
0.47uF
50V
R1807
100
C1867
1uF
25V
1uF
25V
WOOFER
0.1uF
C1842
50V
0.1uF
C1814
16V
R1829
12
WOOFER
0.1uF
C1843
50V
WOOFER
C1859
390pF
50V
WOOFER
C1837
22000pF
50V
C1838
22000pF
50V
0.1uF
C1839
50V
WOOFER
C1836
22000pF
50V
WOOFER
P1801
WAFER-ANGLE
1
2
3
4
R1823
12
SUB_MUTE
SCL3_3.3V
C1811
33pF
50V
33pF
50V
NTP
C1872
0.47uF
50V
0.1uF
C1880
50V
0.1uF
C1823
16V
WOOFER
R1817
100
WOOFER
R1818
10K
WOOFER
SPK_WOOFER_L-
L1802
BLM18PG121SN1D
WOOFER
R1834
12
R1811
100
WOOFER
R1837
4.7K
WOOFER
SCL3_3.3V
AMP_MUTE_HOTEL
SPK_R+
SDA3_3.3V
R1802
10K
D1807
100V
1N4148W
OPT
R1835
4.7K
WOOFER
C1865
390pF
50V
R1828
12
WOOFER
C1816
10uF
10V
OPT
+3.3V_Normal
C1847
10uF
35V
10uF
35V
WOOFER
R1832
12
R1852
3.3
3.3
OPT
AUD_SCK
R1842
4.7K
C1807
1000pF
50V
C1870
0.47uF
50V
WOOFER
C1803
100pF
50V
WOOFER
R1840
4.7K
C1848
10uF
35V
10uF
35V
C1861
390pF
50V
WOOFER
AUD_LRCH
SUB_MUTE
D1808
100V
1N4148W
OPT
C1806
1000pF
50V
SPK_L+
0.1uF
C1841
50V
WOOFER
R1827
12
WOOFER
AUD_MASTER_CLK
D1804
100V
1N4148W
OPT
R1801
10K
C1834
1000pF
50V
SPK_WOOFER_R+
AMP_RESET_N
0.1uF
C1877
50V
R1851
3.3
3.3
OPT
0.1uF
C1840
50V
C1810
10uF
10V
OPT
0.1uF
C1832
16V
AUD_LRCK
C1869
0.47uF
50V
WOOFER
C1813
33pF
50V
33pF
50V
NTP_WOOFER
AUD_SCK
C1817
10uF
10uF
10V
OPT
C1856
1uF
25V
1uF
25V
SPK_WOOFER_L+
0.1uF
C1879
50V
D1803
100V
1N4148W
OPT
C1864
390pF
50V
+24V_AMP
C1858
1uF
25V
25V
+3.5V_ST
C1866
390pF
50V
+24V_AMP
0.1uF
C1874
50V
WOOFER
C1835
22000pF
50V
WOOFER
SPK_WOOFER_L-
R1814
3.3K
WOOFER
+24V_AMP
SPK_WOOFER_L+
C1809
33pF
50V
33pF
50V
NTP_WOOFER
0.1uF
C1826
16V
R1841
4.7K
C1833
1000pF
50V
WOOFER
L1803
BLM18PG121SN1D
C1815
33pF
50V
33pF
50V
NTP
C1857
1uF
25V
25V
WOOFER
R1836
4.7K
WOOFER
C1851
22000pF
22000pF
50V
WOOFER
C1822
0.1uF
16V
WOOFER
0.1uF
C1802
50V
0.1uF
C1873
50V
WOOFER
R1839
4.7K
C1804
100pF
50V
0.1uF
C1876
50V
WOOFER
C1852
22000pF
50V
22000pF
50V
WOOFER
0.1uF
C1878
50V
D1801
100V
1N4148W
OPT
R1819
12
WOOFER
L1807
NRS6045T100MMGK
10.0uH
L1810
NRS6045T100MMGK
10.0uH
L1811
NRS6045T100MMGK
10.0uH
L1806
NRS6045T100MMGK
10.0uH
L1805
NRS6045T100MMGK
WOOFER
10.0uH
L1804
NRS6045T100MMGK
WOOFER
10.0uH
L1809
NRS6045T100MMGK
WOOFER
10.0uH
L1808
NRS6045T100MMGK
WOOFER
10.0uH
IC1801
NTP-7400L
WOOFER
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
GND_2
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
IC1802
NTP-7400L
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
GND_2
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
C1883
10uF
10V
10uF
10V
C1884
10uF
10V
10uF
10V
WOOFER
SPEAKER_L
WOOFER AMP.
BCM35230
1ST : 0TRIY80001A 2ND : 0TR387500AA
18
SPEAKER_R
DUAL COMPONENT
Q1801
50
WOOFER_R
AUDIO[NEO]
WOOFER_L
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