LG 55LEX8-ZA (CHASSIS:LD03S) Service Manual ▷ View online
VGL
( - 5 V )
4.7K
1%
R627
470pF
50V
50V
C619
5.6K
R626
VLCD_POWER
(+12V)
0 . 4 7 u F
50V
C608
0
OPT
R633
P_VCOM
008:O22
22uF
10V
10V
C633
1uF
25V
C606
22000pF
50V
C625
VCOMLOUT
008:AL15
DPM_VDD
0 0 6 : V 4 ; 0 0 6 : V 1 7
VGH_M
(+24V)
TPS65162RGZR
IC600
1
POS1
2
OUT1
3
VDD
4
CE
5
VFLK
6
VDPM
7
RE
8
VGHM
9
VGH
10
FBP
11
GND
12
DRVP
13
SUP
14
DRVN
15
AGND
16
FBN
17
REF
18
DLY1
19
NC_1
20
NC_2
21
FBB
22
CBOOT
23
SWB_1
24
SWB_2
25
PVIN_1
26
PVIN_2
27
VIN
28
FREQ
29
DLY2
30
SS
31
VC
32
EN2
33
EN1
34
PGND1
35
PGND2
36
PGND3
37
SW_1
38
SW_2
39
SWI
40
NC_3
41
FB
42
SWO
43
AVIN
44
NEG2
45
POS2
46
OUT2
47
OGND
48
NEG1
0 . 2 2 u F
16V
C613
22uF
10V
10V
C636
VCOMLFB
008:AL14
22uF
25V
25V
C611
10uF
10V
C609
VLCD_POWER
(+12V)
MBRA340T3G
40V
D603
ONSEMI_DIODE
0
R609
VLCD_LCM_OUT
(+16V)
10uF
10V
C614
VDD_LCM
(+16V)
68pF
50V
C604
1K
R634
1/8W
330K
1%
R605
VCC_LCM
( + 3 . 3 V )
82K
5%
R607
0 . 1 u F
50V
50V
C616
VGH_I
(+27V)
(+27V)
VCOMROUT
008:AD21
470pF
50V
50V
OPT
C620
DPM
007:W8;004:AN15;006:S4
22000pF
50V
C627
22000pF
50V
50V
C621
VLCD_LCM_OUT
(+16V)
10uF
10V
C610
1uF
25V
C607
5.1K
R635
1K
1%
R622
22uF
10V
10V
C639
3.9K
1%
R631
VDD_LCM
(+16V)
1uF
25V
25V
C618
1/10W
7.5K
5%
R636
0 . 1 u F
50V
50V
C641
VLCD_POWER
(+12V)
22uF
25V
25V
C615
0
R603
0
OPT
R613
VLCD_POWER
(+12V)
VLCD_LCM_OUT
(+12V)
0 . 0 4 7 u F
50V
OPT
C612
MBRA340T3G
40V
D602
ONSEMI_DIODE
1/10W
10
1%
R632
FLK
0 0 4 : A I 1 5
VGH
(+24V)
VGH_I
(+24V)
(+24V)
VGH_M
(+24V)
1uF
25V
C600
10uF
25V
25V
C623
5.6K
R623
22000pF
50V
C617
22uF
25V
25V
C622
22uF
25V
25V
C626
680pF
50V
C624
0 . 1 u F
50V
50V
C629
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.
22uH
L600
2.2A
22uH
L601
2.2A
100pF
50V
OPT
C601
22uF
25V
25V
C628
22uF
25V
25V
C631
VCOMRFB
008:AD21
0
OPT
R637
0
R638
0
R639
DPM_VDD
0 0 6 : T 1 2 ; 0 0 6 : V 1 7
DPM
007:W8;004:AN15;006:F12
1.3K
1%
1%
R628
OPT
C642
1K
R615
1K
R618
1K
R617
1K
R616
VDD_LCM
(+16V)
10uF
25V
25V
C644
10uF
25V
25V
C645
10uF
25V
25V
C646
10uF
25V
25V
C647
10uF
25V
25V
C648
10uF
25V
25V
C649
10uF
25V
25V
C650
10uF
25V
25V
C652
10uF
25V
25V
C651
10uF
25V
25V
C653
10uF
25V
25V
C655
10uF
25V
25V
C658
10uF
25V
25V
C654
10uF
25V
25V
C656
10uF
25V
25V
C657
10uF
25V
25V
C659
47uF
25V
25V
C660
OPT
10uF
25V
25V
C672
10uF
25V
25V
C670
10uF
25V
25V
C671
10uF
25V
25V
C673
0
OPT
R601
15K
R630
0
R600
0
R641
0
R644
1/10W
0
5%
R602
33K
1%
R619
1/10W
30K
1%
R621
100K
1%
R620
1uF
50V
50V
C632
1uF
50V
50V
C605
4.7K
R645
OPT
R606
4.7K
R604
10uF
35V
35V
C689
10uF
C602
35V
10uF
C603
35V
10uF
35V
35V
C688
TCON_POWER_EN
001:AJ20;007:Q15
BAV99W_NXP
D600
BAV99W_NXP
D601
1/16W
270K
1%
R611
0
OPT
R646
100V
D604
DPM_VDD
0 0 6 : T 1 2 ; 0 0 6 : V 4
27K
1%
IOP_VGH_55
R612
43K
R612-*1
IOP_VGH_47
24K
1%
R614
IOP_VGH_55
20K
R614-*1
IOP_VGH_47
20K
1%
R625
3.3K
1%
R629
0
R608
1.2K
R610
SMAB34
40V
D602-*1
KEC_DIODE
SMAB34
40V
D603-*1
KEC_DIODE
33
R640
10pF
C643
OPT
22uF
25V
25V
C634
22uF
25V
25V
C637
1/10W
33K
1%
R624
Power Block
[POWER-VDD/VCC/VGH/VGL]
6
13
2 0 0 9 . 1 2 . 2 8
ALEF M240Hz(TM480Hz) Sub Board
820pF
50V
50V
C732
0
OPT
R729
10K
R731
47pF
50V
C728
0 . 1 u F
50V
50V
C738
+1.8V_TCON
5.1K
R742
0 . 1 u F
50V
50V
C734
0 . 2 2 u F
16V
16V
C722
0 . 2 2 u F
16V
16V
C724
5.1K
R700
+3.3V_TCON
10K
R716
820pF
50V
C706
0 . 1 u F
50V
C700
47pF
50V
C716
0 . 1 u F
50V
C704
0
OPT
R718
10uF
25V
C720
VLCD_POWER
(+12V)
VLCD_POWER
(+12V)
VLCD_POWER
(+12V)
SI4804BDY
Q700
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
SI4804BDY
Q702
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
2 . 2
R713
27K
R722
11K
R723
16K
R725
22uF
10V
C701
22uF
10V
C703
22uF
10V
10V
C735
22uF
10V
10V
C737
10
R719
10
R728
9.1K
R734
36K
R737
10uF
25V
C721
VLCD_POWER
(+12V)
2 . 2
R715
0 . 1 u F
50V
C702
820pF
50V
C710
10K
R717
47pF
50V
C718
5.1K
R703
SI4804BDY
Q701
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
0 . 2 2 u F
16V
16V
C725
VLCD_POWER
(+12V)
0 . 1 u F
50V
C709
10
R721
10uH
3.1A
L701
10uH
L700
3.1A
10uH
L702
3.1A
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.
27K
R724
11K
R726
DPM_HVDD
007:Y8
0
OPT
R720
4 . 7
R745
4 . 7
R746
4 . 7
R747
510
R704
510
R708
510
R735
2200pF
50V
C727
2200pF
50V
C717
2200pF
50V
C719
1uF
50V
C723
1uF
50V
C726
2200pF
50V
C713
2200pF
50V
C715
2200pF
50V
50V
C729
2 . 2
R748
1K
1%
1%
R705
30K
1%
R706
6.8K
1%
R707
1K
1%
R736
18K
1%
R738
120K
1%
R711
10K
1%
R712
HVDD
(+8V)
DPM_HVDD
007:N6
DPM
0 0 4 : A N 1 5 ; 0 0 6 : F 1 2 ; 0 0 6 : S 4
TCON_POWER_EN
0 0 1 : A J 2 0 ; 0 0 6 : S 1 4
MAX15026BETD+
IC701
3
PGOOD
2
VCC
4
EN
1
IN
6
COMP
5
LIM
7
FB
8
RT
9
GND
10
DRV
11
DL
12
BST
13
LX
14
DH
MAX15023ETG+T
IC700
1
FB1
3
EN2
7
LX1
9
DH1
10
DH2
11
BST2
12
LX2
13
PGND2
14
DL2
15
PGOOD2
16
VCC
17
FB2
18
COMP2
19
RT
20
SGND
21
IN
22
LIM2
23
LIM1
24
COMP1
5
DL1
8
BST1
6
PGND1
4 PGOOD1
2
EN1
22uF
10V
10V
C742
22uF
10V
10V
C741
0
R750
22K
R701
1uF
C731
MMSD4148T1G
OPT
D700
22uF
16V
C705
22uF
16V
C707
5.1K
1%
R710-*1
IOP_HVDD_55
9.1K
1%
R710
IOP_HVDD_47
22uF
25V
25V
C730
22uF
25V
C711
22uF
25V
C714
22uF
25V
C712
22uF
16V
C743
22uF
16V
C744
2 . 2 u F
25V
25V
C740
POWER
7
13
2 0 0 9 . 1 2 . 2 8
R1
V o u t = 0 . 5 9 2 * ( 1 + R 1 / R 2 )
R1
V o u t = 0 . 6 * ( 1 + R 1 / R 2 )
R1
R2
R2
R2
V o u t = 0 . 6 * ( 1 + R 1 / R 2 )
ALEF M240Hz(TM480Hz) Sub Board
RRMV6N
004:V23
RLMV6N
004:V18
0
R810
LRMV5P
0 0 5 : T 2 3
LRMV4N
0 0 5 : T 2 2
LRMV1P
0 0 5 : T 2 0
RRMV2P
004:V20
V2
008:AD20;008:AL18
RRMV5N
004:V22
LLMV4N
0 0 5 : T 1 8
LRMV0P
0 0 5 : T 2 0
LRMVCLKP
0 0 5 : T 2 2
0
R805
RLMV1N
004:V15
0 . 1 u F
50V
50V
C814
LLMV0N
0 0 5 : T 1 5
V6
008:AD19;008:AL18
RRMV1N
004:V20
0 . 1 u F
50V
50V
C802
V15
008:AD18;008:AL16
RRMV1P
004:V19
RLMV5P
004:V17
RLMV0N
004:V14
RRMV4P
004:V21
0 . 1 u F
50V
50V
C819
LRMV4P
0 0 5 : T 2 2
RRMVCLKP
004:V21
LLMV6N
0 0 5 : T 1 9
V5
008:AD19;008:AL18
LLMV0P
0 0 5 : T 1 5
RLMV5N
004:V18
0
R806
V14
008:AD18;008:AL16
V10
008:AD19;008:AL17
0 . 1 u F
50V
50V
C818
V13
008:AD18;008:AL17
RLMV6P
004:V18
RRMV2N
004:V20
LRMV6N
0 0 5 : T 2 3
RRMVCLKN
004:V21
LLMVCLKN
0 0 5 : T 1 7
LRMV2N
0 0 5 : T 2 1
LLMV2N
0 0 5 : T 1 6
0
R807
V12
008:AD18;008:AL17
LRMV5N
0 0 5 : T 2 3
RRMV0P
004:V19
RLMV2P
004:V15
LRMVCLKN
0 0 5 : T 2 2
LRMV2P
0 0 5 : T 2 1
P_VCOM 006:K14
0
R809
LLMV1P
0 0 5 : T 1 6
LRMV0N
0 0 5 : T 2 0
RLMVCLKN
004:V17
LRMV1N
0 0 5 : T 2 0
LLMV1N
0 0 5 : T 1 6
RLMV4P
004:V17
V18
008:AD17;008:AL16
RLMV4N
004:V17
RLMV1P
004:V15
V3
008:AD20;008:AL18
RRMV6P
004:V22
RRMV0N
004:V19
V1
008:AD20;008:AL19
Z_OUT
008:AL15
LLMV5P
0 0 5 : T 1 8
LLMV6P
0 0 5 : T 1 9
LLMV5N
0 0 5 : T 1 8
BUF16821AIPWPR
IC801
3
OUT2
2
OUT1
4
OUT3
1
VCOM2
6
OUT5
5
OUT4
7
OUT6
8
GNDA_1
9
VS_1
10
OUT7
11
OUT8
12
OUT9
13
VSD
14
SCL
15
SDA
16
AO
17
BKSEL
18
GNDD
19
OUT10
20
OUT11
21
OUT12
22
OUT13
23
VS_2
24
GNDA_2
25
OUT14
26
OUT15
27
OUT16
28
VCOM1
VCOMLFB
0 0 6 : J 1 6
0 . 1 u F
50V
50V
C816
RRMV5P
004:V22
RLMVCLKP
004:V16
LLMV4P
0 0 5 : T 1 8
V4
008:AD20;008:AL18
RLMV2N
004:V16
LLMV2P
0 0 5 : T 1 6
0 . 1 u F
50V
50V
C801
V17
008:AD17;008:AL16
V9
008:AD19;008:AL17
RRMV4N
004:V22
LLMVCLKP
0 0 5 : T 1 7
V16
008:AD18;008:AL16
V7
008:AD19;008:AL17
RLMV0P
004:V14
LRMV6P
0 0 5 : T 2 3
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.
VCC_LCM
( + 3 . 3 V )
VDD_LCM
(+16V)
VDD_LCM
(+16V)
VCC_LCM
( + 3 . 3 V )
VCC_LCM
( + 3 . 3 V )
VDD_LCM
(+16V)
0 . 0 1 u F
50V
50V
C817
0 . 0 1 u F
50V
50V
C820
I2C_SCL
I2C_SDA
VDD_LCM
(+16V)
12505WR-04A00
P807
1
2
3
4
5
0
R822
0
R823
0
R824
0
R825
0
R826
0
R827
0
R828
0
R829
0
R830
0
R831
0
R832
0
R833
33
R811
33
R808
GOE
004:AD17;008:AL13
GSC
004:AN17;008:AL14
VCOMROUT
0 0 6 : J 1 7
OPT_P
004:R10
V16
008:O21;008:AL16
V4
008:G20;008:AL18
V14
008:O19;008:AL16
V12
008:O18;008:AL17
V5
008:G20;008:AL18
V2
008:G21;008:AL18
V10
008:G17;008:AL17
V3
008:G21;008:AL18
V17
008:O21;008:AL16
V18
008:O22;008:AL16
V9
008:G17;008:AL17
V13
008:O18;008:AL17
V7
008:G18;008:AL17
V15
008:O19;008:AL16
V1
008:G22;008:AL19
V6
008:G19;008:AL18
GSP
004:AD15;008:AL20
POL
0 0 4 : A I 1 7 ; 0 0 8 : A L 1 9
OPT_N
004:R10;008:AL20
SOE_R
0 0 4 : A I 1 3
H_CONV
004:O10;008:AL20
OPT_N
004:R10;008:AD16
SOE_L
004:AD13
H_CONV
004:O10;008:AD16
POL
004:AI17;008:AD17
GSP
004:AD15;008:AD17
V6
008:G19;008:AD19
V17
008:O21;008:AD17
V15
008:O19;008:AD18
V7
008:G18;008:AD19
V10
008:G17;008:AD19
V14
008:O19;008:AD18
V13
008:O18;008:AD18
V3
008:G21;008:AD20
V12
008:O18;008:AD18
V2
008:G21;008:AD20
V4
008:G20;008:AD20
V18
008:O22;008:AD17
V16
008:O21;008:AD18
V1
008:G22;008:AD20
V5
008:G20;008:AD19
V9
008:G17;008:AD19
Z_OUT
008:AD21
VCOMLOUT
0 0 6 : F 1 2
GOE
004:AD17;008:AD22
GSC
004:AN17;008:AD22
120-ohm
L800
104060-8017
P805
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
104060-8017
P806
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
5.5V
TVS
ZD801
OPT
5.5V
TVS
ZD800
OPT
I2C_SCL
0 0 1 : E 1 9 ; 0 0 5 : A G 2 5 ; 0 0 8 : E 2 6 ; 0 1 2 : L 1 7 ; 0 1 2 : L 1 9 ; 0 1 3 : E 1 8 ; 0 1 3 : E 1 1 ; 0 1 3 : Z 1 6 ; 0 1 4 : A P 8 ; 0 1 6 : X 2 1 ; 0 1 7 : I 1 3
I2C_SDA
0 0 1 : E 1 9 ; 0 0 5 : A G 2 4 ; 0 0 8 : E 2 6 ; 0 1 2 : L 1 7 ; 0 1 2 : L 1 9 ; 0 1 3 : E 1 8 ; 0 1 3 : E 1 0 ; 0 1 3 : Z 1 6 ; 0 1 4 : A P 1 1 ; 0 1 6 : X 2 2 ; 0 1 7 : I 1 3
OPT
C824
OPT
C825
HVDD
(+8V)
HVDD
(+8V)
VGL
( - 5 V )
VGL
( - 5 V )
VGH
(+24V)
VGH
(+24V)
VCOMRFB
0 0 6 : J 1 7
10uF
25V
25V
C843
10uF
25V
25V
C844
10uF
25V
25V
C845
10uF
25V
25V
C846
10uF
25V
25V
C847
OPT
10uF
25V
25V
C848
OPT
10uF
25V
25V
C862
10uF
25V
25V
C863
10uF
25V
25V
C858
10uF
25V
25V
C850
OPT
10uF
25V
25V
C849
OPT
10uF
25V
25V
C857
10uF
25V
25V
C854
10uF
25V
25V
C855
GAMMA_BKSEL
001:AG16
0
R834
1K
R835
OPT
18pF
50V
OPT
C812
2V5
TDO_FPGA
0
R814
2.5V_FPGA_DL
FDV301N
Q804
2.5V_FPGA_DL
G
D
S
18pF
50V
OPT
C822
0
R839
2.5V_FPGA_DL
0
R844
2.5V_FPGA_DL
2K
R816
2.5V_FPGA_DL
4.7K
R817
2.5V_FPGA_DL
E_TCK
18pF
50V
OPT
C813
E_TMS
FDV301N
Q802
2.5V_FPGA_DL
G
D
S
TDO_FLASH
2V5
2K
R846
2.5V_FPGA_DL
TDI_FLASH
4.7K
R847
2.5V_FPGA_DL
2K
R841
2.5V_FPGA_DL
TCK_FPGA
TDI_FPGA
4.7K
R837
2.5V_FPGA_DL
2V5
2K
R836
2.5V_FPGA_DL
E_TDO
2V5
4.7K
R842
2.5V_FPGA_DL
FDV301N
Q803
2.5V_FPGA_DL
G
D
S
E_TDI
18pF
50V
OPT
C811
FDV301N
Q801
2.5V_FPGA_DL
G
D
S
TMS_FPGA
TCK_FLASH
TMS_FLASH
0
R819
2.5V_FPGA_DL
0
R855
2.5V_FPGA_DL
0
R856
2.5V_FPGA_DL
0
R859
2.5V_FPGA_DL
0
R860
2.5V_FPGA_DL
22
R857
3.3V_FPGA_DL
22
R858
3.3V_FPGA_DL
22
R854
3.3V_FPGA_DL
22
R853
3.3V_FPGA_DL
22
R852
22
R849
22
R850
22
R851
22
R818
OPT
22
R838
OPT
22
R843
OPT
22
R848
OPT
[RIGHT FFC CONNECTOR]
[LEFT FFC CONNECTOR]
8
I n t e r f a c e
13
2 0 0 9 . 1 2 . 2 8
ALEF M240Hz(TM480Hz) Sub Board
P-Gamma JIG
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.
22uF
10V
10V
C902
1/8W
75K
1%
R902
24K 1%
R906
MP2212DN
IC901
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
0 . 1 u F
50V
50V
C913
22K
1%
R905
10K
R910
+3.3V
0
R904
1/10W
10
1%
R903
100pF
50V
C906
+1.2V
1uF
10V
C910
0.1uF
16V
C918
10uF
25V
C907
0 . 1 u F
50V
C915
22K
R911
OPT
MP8670DN-LF-Z
IC900
3
VCC
2
BST
4
BG
1
SW
5
GND
6
FB
7
EN/SYNC
8
IN
VLCD_POWER
(+12V)
10uF
25V
C912
0 . 1 u F
50V
50V
C908
3 . 3 u F
50V
50V
C911
1uF
50V
50V
C903
22
R900
120K
1%
R909
3 . 3 u F
50V
50V
C914
1.6K
1%
R907
+24V
6.8K
1%
R908
1uF
25V
25V
C901
120-ohm
L901
3 . 3 u F
50V
50V
C920
100K
R912
OPT
22uF
10V
C916
22uF
10V
C917
LQH88PN3R6N38K
3.6uH
L904
0
R913
POWER_CTRL_24V
1uF
10V
10V
C11618
OPT
LQH88PN3R6N38K
3.6uH
L902
LQH88PN3R6N38K
3.6uH
L903
0
R901
SI4124DY-T1-GE3(VISHAY)
Q900
3
S_3
2
S_2
4
G
1
S_1
5
D_1
6
D_2
7
D_3
8
D_4
Placed on SMD-TOP
R1
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
C l o s e t o I C
R e p l a c e d P a r t
R2
+ 3 . 3 V t o + 1 . 2 V
C IN
max 1500 mA
R1
Placed on SMD-TOP
24V->12V
R2
13
2 0 0 9 . 1 2 . 2 8
DP POWER BLOCK
9
ALEF M240Hz(TM480Hz) Sub Board
P l a c e t h e m a s c l o s e a s p o s s i b l e
Click on the first or last page to see other 55LEX8-ZA (CHASSIS:LD03S) service manuals if exist.