LG 55LE5400, Service Manual

Page: 37 / 85

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.
POWER
COMMON
80 100
09/10/xx
+5V_USB
+3.5V_ST
R8018
100
POWER_24_INV_CTL
L8004
3.6uH
NR8040T3R6N
0 R8035
POWER_22_HD_OPC
Q8001
2SC3052
E
B
C
R8030 0
POWER_22_A_DIM
PANEL_CTL
81:A2
C8017
0.1uF
OPT
+5V_USB
+3.3V_NORMAL
0 R8027
POWER_20_PWM_DIM
R8031 0
POWER_20_A_DIM
POWER_ON/OFF1
R8037 4.7K
OPT
Q8003
2SC3052
E
B
C
C8020
22uF
10V
+12V
P8000
FW20020-24S
NORMAL_26~55
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21 22
23 24
R8003
22K
R8019
100
POWER_18_INV_CTL
C8016
100pF
50V
OPT
C8004
0.1uF
16V
C8015
1uF
25V
Q8000
2SC3052
E
B
C
INV_CTL
+3.5V_ST
C8018
0.1uF
50V
R8009 0
POWER_23_SCAN_BLK2
PWM_DIM
R8004
4.7K
R8000
10K
0 R8020
POWER_22_PWM_DIM
R8008
22K
+3.3V_NORMAL
Q8002
RT1P141C-T112
1
2
3
R8074
100
0 R8021
POWER_24_PWM_DIM
C8007
0.1uF
C8021
1uF
25V
OPT
OPC_OUT
R8068
100K
R8012
10K
R8023
6.8K
OPT
C8025
0.1uF
16V
R8067 14K 1%
PD_+3.5V
SCAN_BLK1/OPC_OUT
L8001
0 R8033
NON_OPC/NON_IOP
R8029
0
POWER_18_A_DIM
L8003
MLB-201209-0120P-N2
C8012 1uF 25V
OPT
R8039
10K
OPT
+12V
R8075 10K
OPT
C8024
68uF
35V
+3.5V_ST
0 R8034
POWER_SCAN1/FHD_OPC
A_DIM
R8038
10K
OPT
R8001
47K
RL_ON
ERROR_OUT
L8005
MLB-201209-0120P-N2
+24V
R8013
10K
POWER_DET
C8019
100pF
50V
OPT
PANEL_VCC
+3.5V_ST
0 R8024
POWER_20_ERROR_OUT
+12V
R8006
22
C8014
1uF
50V
IC8007
NCP803SN293
EAN60670101
1
GND
3
VCC
2
RESET
SCAN_BLK2
R8015 0
POWER_16_GND
R8017 6.2K
1%
C8000
100uF
16V
IC8000
MP8706EN-C247-LF-Z
EAN31346002
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
C8011 0.1uF 16V
OPT
+24V
V_SYNC
R8002
10K
OPT
R8011 1.8K
L8002
MLB-201209-0120P-N2
R8063 12K 1%
PD_+12V
POWER_ON/OFF2_1
C8023
0.1uF
16V
R8032
10K
R8010
10K
+3.5V_ST
C8006
0.1uF
16V
0 R8025
POWER_24_ERROR_OUT
+12V
R8064 5.1K 1/16W 5%
3.5V
R8016 33K
1%
Q8005
2SC3052
E
B
C
C8008
0.01uF
25V
POWER_ON/OFF2_1
R8036
0
OPT
R8028
0
OPT
R8005
0
OPT
L_VS
MO_MOSI
MO_SCLK
L8000
CIC21J501NE
R8026
1K
R8045
0
C8029
22uF
16V
L8006
MLB-201209-0120P-N2
L8011
BLM18PG121SN1D
R8047
3.9K OPT
C8045
0.1uF
16V
A1.2V
D1.2V
R8040
100K
C8027
0.1uF
+3.5V_ST
R8043
470K
1%
C8036
0.1uF
C8032
0.1uF
L8009
2uH
R8048
910K
1%
C8026
0.1uF
10
R8041
R8042
0
C8035
22uF
D1.8V
L8012
3.6uH
NR8040T3R6N
R8052
10K
0.1uF
C8050
R8051
6.8K
C8042
0.01uF
25V
+3.5V_ST
C8038
0.01uF
25V
C8031
22uF
10V
C8044
100pF
50V
OPT
R8057
10K
1%
C8048
22uF
10V
R8056
10K
1/10W
1%
C8034 0.01uF 25V
L8008
CIC21J501NE
R8007
0
POWER_23_GND
R8014
0
POWER_24_GND
R8076
0
POWER_23_42/47_LOCAL_DIM
M2_MOSI
R_VS
R8078
0
POWER_16_42/47_LOCAL_DIM
M2_SCLK
R8077 0
POWER_20_42/47_LOCAL_DIM
L_VS
R_VS
M2_SCLK
MO_SCLK
M2_MOSI
MO_MOSI
C8001
100uF
25V
C8003
0.1uF
50V
C8005
0.1uF
50V
C8009
0.1uF
50V
C8010
10uF
25V
OPT
C8022
0.1uF
50V
C8002
10uF
25V
C8013
4.7uF
50V
R8081
100
R8079
100K
IC8008
NCP803SN293
1
GND
3
VCC
2
RESET
R8061
24K
1%
POWER 20V
R8061-*1
24K
1%
POWER 24V
R8062
5.1K
5%
POWER 20V
R8062-*1
4.3K
1%
POWER 24V
+3.5V_ST
R8080
14K 1%
OPT
IC8002
MP2108DQ
DEV
EAN60991601
3
LX
2
VIN
4
PGND
1
BST
5
SGND
6
SS
7
FB
8
COMP
9
VREF
10
RUN
IC8001
MP2208DL-LF-Z
DEV
EAN60911601
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
P8001
SMAW200-H24S2
SLIM_32~55
19
12V
14
GND
9
3.5V
4
24V
18
INV ON
13
GND
8
GND
3
24V
17
12V
12
3.5V
7
GND
2
24V
16
GND/V-sync
11
3.5V
6
GND
1
PWR ON
20
A.DIM
15
GND
10
3.5V
5
GND
21
12V
22
P.DIM1
23
GND/P.DIM2
24
Err OUT
25
Q8004
AO3407A
G
D S
C8065
0.1uF
16V
IC8004
SC4215ISTRT
0IPMGS1010A
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
0.1uF
C8062
0.1uF
C8056
OPT
+3.3V_NORMAL
R8059
10K
L8017
500
A2.5V
R8072
39K
1%
R8073
18K
1%
0.1uF
C8055
L8014
500
C8053
10uF
16V
C8058
10uF
16V
C8061
10uF
16V
R8082
0
POWER_16_V_SYNC
C8033
1uF
10V
C8039
3300pF
50V
DEV
R8044
10K
C8041
22uF
10V
C8043
22uF
10V
C8037
22uF
10V
R8065 0
POWER_22_SCAN_BLK2
SCAN_BLK2
0 R8022
POWER_20_SCAN_BLK1
R8046
30K
1%
L8007
CIC21J501NE
R8055 10K
1%
R8053 47K
1%
R8050
10K
+5V_NORMAL
C8049
0.1uF
16V
POWER_ON/OFF2_2
C8028
10uF
25V
R8054
5.6K
1%
L8010
3.6uH
NR8040T3R6N
C8047
22uF
10V
C8030
10uF
25V
+12V
R8049
12K C8046
100pF
50V
OPT
C8066
22uF
10V
C8067
0.1uF
IC8003
AOZ1072AI
EAN60922901
DEV
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C8040
2200pF
D3.3V
C8052
22uF
25V
R8071 10K
1%
+3.3V_NORMAL
+12V
R8066 3.9K OPT
C8059
22uF
10V
L8016
CIC21J501NE
R8058
20K
R8070
4.7K
1%
C8069
50V
OPT
IC8005
AOZ1024DI
EAN60660601 1
PGND
2
VIN
3
AGND
4
FB
5
COMP
6
EN
7
LX
C8057
22uF
10V
POWER_ON/OFF2_2
C8051
0.1uF
50V
R8069 27K
1%
L8013
CIC21J501NE
C8064
0.1uF
16V C8063
0.1uF
16V
C8054
3300pF
50V
L8015
3.6uH
R8060
10K
<OS MODULE PIN MAP>
PIN No
INV_ON
Vout=(1+R1/R2)*0.8
R2
3A
ST_3.5V-->3.5V
INV_ON
INV_ON
INV_ON
+5V_USB
Err_out
20V-->3.5V
Power_DET
15V-->3.6V
PANEL_POWER
22
NC
PWM_DIM
24V-->3.48V
FROM LIPS & POWER B/D
AUO
18
V4:VBR-A
V5:NC
SHARP
Err_out
CMO(09)
PWM_DIM
PWM_DIM
PWM_DIM
GND
20
A-DIM
R1
MAX 1500mA
A-DIM
Err_out
24
Max 1100 mA
12V-->3.58V
LGD
MAX 3.1A
Vout=0.8*(1+R1/R2)
R1 R2
BCM core 1.2V volt
Placed on SMD-TOP
Vout=0.9*(1+R1/R2)
Replaced Part
R1
C IN
3A
Placed on SMD-TOP
R2
BCM DDR 1.8V
A2.5V
Vout=0.8*(1+R1/R2)
R1
R2
VOUT : 2.533V
For RESET at 8kV ESD
#16/#20/#23
LD - GND OR USE
LE(N.L.D.) - OPEN
LE(L.D.) - USE
CHECK PWR/MODULE PIN MAP
LED:GND
2A
R1
+5V_NORMAL
Vout=0.8*(1+R1/R2)
MAX 350mA
R2
MAX 2.3A
+3.3V_NORMAL