Read LG 32LT650H (CHASSIS:LB2AZ) 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
0 . 1 u F
C451
OPT
100K
R404
PD_+24V
10K
R430
OPT
0 . 1 u F
16V
C404
+12V/+15V
NR8040T3R6N
3.6uH
L415
AO3407A
Q409
G
D
S
PWM_DIM
1/16W
56K
1%
R441
22uF
10V
C456
+3.5V_ST
560pF
50V
50V
C467
10K
OPT
OPT
R427
+12V/+15V
1.5K
1%
R403
PD_+24V
THERMAL
TPS54319TRE
IC403
1
VIN_1
3
GND_1
7
COMP
9
SS/TR
10
PH_1
11
PH_2
12
PH_3
13
BOOT
14
PWRGD
15
EN
16
VIN_3
5
AGND
8
RT/CLK
6
VSENSE
4
GND_2
2
VIN_2
17
EP[GND]
1K
R419
0 . 1 u F
16V
16V
C440
+3.3V_Normal
100pF
C489
+3.3V_Normal
L413
10K
R443
10K
R421
0 . 1 u F
C474
L401
0 . 1 u F
16V
C407
OPT
22uF
10V
C453
0
OPT
R476
2.2K
R407
OPT
3300pF
50V
50V
C493
10uF
25V
25V
C405
56K
1%
R416
10uF
10V
10V
C403
5.6K
R440
22uF
10V
C472
4.7K
R486
OPT
+24V
+1.5V_DDR
POWER_DET
0
POWER_16_GND
R412
+5V_Normal
47K
R429
L412
+3.5V_ST
10K
R410
SMAW200-H24S2
SLIM_32~52
P401
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
1/16W 330K 5%
R432
INV_CTL
0 . 1 u F
16V
16V
C438
0 . 1 u F
16V
16V
C411
100
R415
0 . 1 u F
16V
16V
C406
0 . 1 u F
16V
OPT
16V
OPT
C445
0 . 1 u F
16V
16V
C425
4 . 7 u F
16V
16V
C423
FET_AOS
PANEL_CTL
1:AK10
THERMAL
AP7173-SPG-13 HF(DIODES)
IC407
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[ E P ]
0
OPT
R475
A_DIM
+3.5V_ST
+1.10V_VDDC
22uF
16V
16V
C420
100
R420
ERROR_OUT
2.2K
R405
OPT
10uF
25V
C443
100
R480
PD_+24V
0
R471
1K
R414-*1
PWM_PULL-DOWN_1K
+12V/+15V
10uF
16V
OPT
16V
OPT
C442
10K
R462
NR8040T3R6N
3.6uH
L406
+5V_USB
22uF
16V
16V
C492
OPT
+3.3V_Normal
68uF
35V
C426
OPT
0 . 1 u F
16V
16V
C432
10K
R463
OPT
0 . 1 u F
16V
C416
OPT
0 . 1 u F
16V
16V
C444
0 . 1 u F
16V
16V
C435
0 . 1 u F
16V
C447
1uF
10V
10V
C494
100K
R488
10K
R401
0 . 1 u F
16V
C476
0 . 1 u F
16V
16V
C431
0 . 1 u F
16V
16V
C455
10uF
10V
10V
C430
+3.3V_Normal
33K
R439
1/10W
1.21K
1%
R447
PD_+12V
RL_ON
1
R473
FM20020-24
P404
NORMAL_32
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
25
3K
R405-*1
PANEL_DISCHARGE_RES
0 . 1 u F
16V
16V
C408
OPT
0 . 1 u F
16V
16V
C412
PD_+24V
10K
OPT
R446
22K
R435
PANEL_VCC
8.2K
1%
R482
PD_+24V
0 . 1 u F
50V
C418
3K
PANEL_DISCHARGE_RES
R407-*1
100pF
50V
C439
+3.5V_ST
0 . 1 u F
16V
C475
+3.5V_ST
10K
R426
100
R402
10K
R433
+2.5V_Normal
+3.3V_Normal
10K
R428
22K
R438
FW20020-24S
P403
NORMAL_EXPEPT_32
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
BLM18PG121SN1D
L420
+3.3V_Normal
+3.5V_ST
22K
R431
10uF
10V
C461
ERROR_OUT
10K
R461
OPT
+3.5V_ST
+12V/+15V
11K
1%
R411
BLM18PG121SN1D
L403
BLM18PG121SN1D
L425
6.8K
OPT
R418
+3.5V_ST
0 . 1 u F
16V
C441
2.7K
1%
PD_+12V
R448
+24V
10K
R434
POWER_ON/OFF_1
0
5%
PD_+3.5V
R450
4.7K
R406
12K
1%
R423
15K
R436
1/16W
27K
1%
R442
1/16W
4.3K
1%
R457
1/16W
4.7K
1%
R456
T J 3 9 4 0 S - 2 . 5 V - 3 L
IC402
1
GND
2
VOUT
3
VIN
0 . 1 u F
50V
C413
0
R413
0
R400
OPT
FB_CORE
THERMAL
TPS54327DDAR
IC401
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
10K
R489
OPT
10K
R490
OPT
100uF
16V
C401
OPT
100uF
16V
C402
OPT
0 . 0 1 u F
50V
C436
0 . 0 1 u F
3300pF
50V
C448
3300pF
C488
CIS21J121
L404
BEAD_SS
CIS21J121
L402
BEAD_SS
CIS21J121
L407
BEAD_SS
MMBT3904(NXP)
Q405
E
B
C
MMBT3904(NXP)
Q400
E
B
C
MMBT3904(NXP)
Q406
E
B
C
MMBT3904(NXP)
Q407
E
B
C
MMBT3904(NXP)
Q401
E
B
C
AO3407A
Q403
FET_AOS
G
D
S
3.9K
R414
PWM_PULL-DOWN_3.9K
MMBT3906(NXP)
Q402
1
2
3
0 . 0 1 5 u F
50V
50V
C409
0 . 0 1 5 u F
APX803D29
IC408
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
APX803D29
IC409
PD_+24V_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
12507WR-08L
FOR LPB MODEL
P405
1
2
3
4
5
6
7
8
9
33
FOR LPB MODEL
R408
33
FOR LPB MODEL
R409
EEPROM_SCL
EEPROM_SDA
100
R445
FET_AOS
+3.3V_Normal
MLB-201209-0120P-N2
BEAD_MAG
L407-*1
MLB-201209-0120P-N2
BEAD_MAG
L404-*1
MLB-201209-0120P-N2
BEAD_MAG
L402-*1
AO3435
FET_2.5V_AOS
Q403-*2
G
D
S
DMP2130L
FET_2.5V_DIODE
Q403-*1
G
D
S
APX803D29
PD_+24V_PWR_DET_DIODES
I C 4 0 9 - * 1
1
GND
3
VCC
2
RESET
APX803D29
PWR_DET_ON_DIODES
I C 4 0 8 - * 1
1
GND
3
VCC
2
RESET
33K
OPT
R417
2.2K
FET_2.5V
R445-*1
2 . 2 u F
10V
10V
FET_2.5V
C423-*1
OLP
22uF
10V
10V
C437
POWER_LARGE
4A
R2
New item
Max 1000mA
V o u t = 0 . 8 * ( 1 + R 1 / R 2 ) = 1 . 5 3 1 9
+1.5V_DDR
$ 0 . 1 6 5
Vd=550mV
1 2 V - - > 3 . 5 8 V - - > 3 . 8 2 V ( 3 . 6 8 V )
+3.3V_Normal
FROM LIPS & POWER B/D
R1
780 mA
PANEL_POWER
Vout=(1+R1/R2)*0.765=5.03V
R1
2000 mA
1.5A
S 7 L R c o r e 1 . 2 V v o l t
R2
300 mA
Vout=0.827*(1+R1/R2)=1.225V
2 4 V - - > 3 . 7 8 V - - > 3 . 9 2 V ( 3 . 7 9 V )
S T _ 3 . 5 V - - > 3 . 3 7 5 V - - > 3 . 4 6 V
+2.5V/+1.8V
Power_DET
+5V_USB
R1
3A
R2
2 0 V - - > 3 . 5 1 V - - > 3 . 7 6 V ( 3 . 5 9 V )
2 0 1 1 . 0 8 . 2 1
4 2 0
EMEA INTERACTIVE
GP4_MSTAR
FOR LPB Download
[To LED DRIVER]
’ E R R O R _ O U T ’ i s u s e d f o r
lamp(CCFL/EEFL) models.
I n o t h e r w o r d s ,
L E D m o d e l s n e e d n o t u s e .
N o t u s e d :
o n l y f o r s m a l l ( r e a d y )
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