Read LG 55LEX8-ZA (CHASSIS:LD03S) Service Manual online
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.
+3.5V_ST
NR8040T3R6N
3.6uH
L8004
0 . 1 u F
OPT
OPT
C8017
+5V_USB
+3.3V_NORMAL
POWER_ON/OFF1
4.7K
R8037
OPT
22uF
10V
10V
C8020
FW20020-24S
P8000
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
100
R8019
100pF
50V
OPT
C8016
0 . 1 u F
16V
16V
C8004
2SC3052
Q8000
E
B
C
INV_CTL
+3.5V_ST
0 . 1 u F
50V
C8018
PWM_DIM
4.7K
R8004
10K
R8000
0
R8020
+3.3V_NORMAL
RT1P141C-T112
Q8002
1
2
3
100
R8074
0 . 1 u F
C8007
1uF
25V
25V
OPT
C8021
100K
R8068
10K
R8012
6.8K
OPT
R8023
0 . 1 u F
16V
16V
C8025
500
L8001
0
R8033
MLB-201209-0120P-N2
L8003
10K
OPT
OPT
R8039
+12V
10K
OPT
R8075
68uF
35V
C8024
RL_ON
ERROR_OUT
MLB-201209-0120P-N2
L8005
+24V
10K
R8013
POWER_DET
100pF
50V
OPT
C8019
+3.5V_ST
+12V
22
R8006
1uF
50V
50V
C8014
NCP803SN293
IC8007
1
GND
3
VCC
2
RESET
6.2K
1%
R8017
100uF
16V
C8000
MP8706EN-C247-LF-Z
IC8000
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
+24V
MLB-201209-0120P-N2
L8002
12K
1%
PD_+12V
R8063
POWER_ON/OFF2_1
0 . 1 u F
16V
16V
C8023
10K
R8032
+3.5V_ST
0 . 1 u F
16V
16V
C8006
0
OPT
R8025
+12V
1/16W
5.1K
5%
NON_PD_+3.5V
R8064
33K
1%
R8016
2SC3052
Q8005
E
B
C
POWER_ON/OFF2_1
3.9K
R8066
OPT
3.6uH
L8015
AOZ1024DI
IC8005
1
PGND
2
VIN
3
AGND
4
FB
5
COMP
6
EN
7
LX
+12V
D3.3V
0 . 1 u F
16V
16V
C8064
0 . 1 u F
16V
16V
C8063
+3.3V_NORMAL
CIC21J501NE
L8016
27K
1%
R8069
4.7K
1%
R8070
10K
1%
R8071
POWER_ON/OFF2_2
CIC21J501NE
L8013
20K
R8058
1K
R8026
22uF
16V
16V
C8029
MLB-201209-0120P-N2
L8006
BLM18PG121SN1D
L8011
3.9K
R8047
OPT
0 . 1 u F
16V
16V
C8045
A1.2V
D1.2V
100K
R8040
0 . 1 u F
C8027
+3.5V_ST
470K
1%
R8043
0 . 1 u F
C8036
0 . 1 u F
C8032
2uH
L8009
910K
1%
R8048
0 . 1 u F
C8026
10
R8041
0
R8042
22uF
C8035
D1.8V
NR8040T3R6N
3.6uH
L8012
10K
R8052
0 . 1 u F
C8050
6.8K
R8051
0 . 0 1 u F
25V
25V
C8042
+3.5V_ST
0 . 0 1 u F
25V
25V
C8038
22uF
10V
10V
C8031
100pF
50V
OPT
C8044
10K
1%
R8057
22uF
10V
C8048
1/10W
10K
1%
R8056
0.01uF
25V
C8034
CIC21J501NE
L8008
100uF
25V
C8001
0 . 1 u F
50V
C8003
0 . 1 u F
50V
C8005
22uF
25V
25V
C8052
0 . 1 u F
50V
C8051
10uF
25V
25V
C8002
100
R8081
100K
R8079
NCP803SN293
IC8008
1
GND
3
VCC
2
RESET
24K
1%
R8061
POWER 20V
24K
1%
POWER 24V
R8061-*1
5.1K
5%
R8062
POWER 20V
4.3K
1%
POWER 24V
R8062-*1
+3.5V_ST
14K
1%
OPT
R8080
MP2108DQ
IC8002
3
LX
2
VIN
4
PGND
1
BST
5
SGND
6
SS
7
FB
8
COMP
9
VREF
10
RUN
THERMAL
MP2208DL-LF-Z
IC8001
3
PGND_1
2
SS
4
SW_1
1
AGND
6
NC
5
IN_1
7
BS
8
VCC
9
POK
10
IN_2
11
SW_2
12
PGND_2
13
EN/SYNC
14
FB
15
EP
0 . 1 u F
16V
16V
C8065
3300pF
50V
C8039
22uF
10V
10V
C8041
22uF
10V
10V
C8037
22uF
10V
10V
C8057
22uF
10V
10V
C8059
1uF
10V
10V
C8033
10K
R8060
10K
R8044
0
OPT
R8083
10uF
10V
10V
C8067
2200pF
50V
C8054
5.6V
D8000
0 . 1 u F
C8069
OPT
27K
1%
R8064-*1
PD_+3.5V
1K
1%
PD_+3.5V
R8067
INV_CTL_TR
0 . 1 u F
16V
16V
C8070
0.1uF
C8071
0.1uF
C8072
0 . 1 u F
16V
16V
C8073
0 . 1 u F
16V
16V
C8074
A2.5V
+3.3V_NORMAL
+5V_NORMAL
0 . 1 u F
16V
16V
C8075
0 . 1 u F
16V
16V
C8076
+12V
0 . 1 u F
16V
16V
C8077
100K
R8045
30K
1%
1%
R8046
100uF
16V
C8078
10uF
16V
16V
C8043
68uF
35V
C8079
5.6V
D8001
0 . 1 u F
C8062
500
L8014
18K
1%
1%
SEMTEK
R8073
39K
1%
1%
SEMTEK
R8072
0 . 1 u F
OPT
C8056
500
L8017
SC4215ISTRT
SEMTEK
IC8004-*1
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
10K
BCD
R8087
10K
BCD
R8086
10uF
16V
C8061
0 . 1 u F
OPT
C8080
4.7K
1%
1%
BCD
R8073-*1
15K
1%
1%
BCD
R8072-*1
+5V_NORMAL
THERMAL
AP2132MP-2.5TRG1
BCD
IC8004
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[ E P ]
500
BCD
L8018
10K SEMTEK
R8059
10uF
16V
C8058
0 . 1 u F
C8055
A2.5V
+3.3V_NORMAL
10uF
16V
C8053
0 . 1 u F
16V
16V
C8081
0 . 1 u F
16V
16V
C8082
0 . 1 u F
16V
16V
C8083
0 . 1 u F
16V
16V
C8084
0 . 1 u F
16V
16V
C8085
0 . 1 u F
16V
16V
C8086
10K
R8053
0 . 1 u F
16V
16V
C8049
0 . 1 u F
C8068
22uF
10V
10V
C8066
POWER_ON/OFF2_2
10uF
25V
25V
C8028
10uF
25V
25V
C8030
10K
R8050
22uF
10V
10V
C8047
MP8706EN-C247-LF-Z
IC8003
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
100pF
50V
OPT
C8046
+5V_NORMAL
100pF
50V
OPT
C8040
33K
1%
R8054
22
R8088
NR8040T4R7N
6.8uH
L8010
10uF
25V
25V
C8087
CIC21J501NE
L8007
1uF
50V
50V
C8088
6.2K
1%
R8055
+12V
+5V_USB
15
V o u t = ( 1 + R 1 / R 2 ) * 0 . 8
R2
3A
S T _ 3 . 5 V - - > 3 . 5 V
+5V_USB
20V-->3.5V
Power_DET
15V-->3.6V
24V-->3.48V
FROM LIPS & POWER B/D
R1
MAX 1500mA
Max 1100 mA
12V-->3.58V
+3.3V_NORMAL
MAX 3.1A
MAX 2.3A
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
R1
R2
B C M c o r e 1 . 2 V v o l t
Placed on SMD-TOP
Vout=0.9*(1+R1/R2)
R e p l a c e d P a r t
R1
C IN
3A
Placed on SMD-TOP
R2
BCM DDR 1.8V
n o t t o R E S E T a t 8 k V E S D
SEMTEK:Vout=0.8*(1+R1/R2)
A2.5V
R2
BCD:Vout=0.6*(1+R1/R2)
BCD VOUT : 2.514V
SEMTEK VOUT : 2.533V
R1
R2
MAX 350mA
V o u t = ( 1 + R 1 / R 2 ) * 0 . 8
R1
3A
+5V_NORMAL
POWER
BCM (EUROBBTV)
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