LG LT36 Series Service Manual

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.
+3.5V_ST
0.1uF
C451
OPT
100K
R404
PD_+12V
10K
R430
0.1uF
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
C467
10K
OPT
R427
+12V/+15V
1.5K
1%
R403
POWER_+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]
MLB-201209-0120P-N2
L404
1K
R419
0.1uF
16V
C440
+3.3V_Normal
100pF
C489
22uF
16V
C437
+3.3V_Normal
L413
10K
R443
10K
R421
0.1uF
C474
L401
0.1uF
16V
C407
OPT
22uF
10V
C453
0
POWER_23_GND
R476
3300pF
50V
C493
10uF
25V
C405
56K
1%
R416
10uF
10V
C403
5.6K R440
22uF
10V
C472
4.7K R486
OPT
+24V
0
POWER_20_PWM_DIM
R484
+1.5V_DDR
POWER_DET
0
POWER_16_GND
R412
+5V_Normal
CIS21J121
L402-*1
47K
R429
OPT
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
0.1uF
16V
C438
0.1uF
16V
C411
100
R415
POWER_18_INV_CTL
0.1uF
16V
C406
0.1uF
16V
OPT
C445
0.1uF
16V
C425
4.7uF
16V
C423
OPT
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
[EP]
0
POWER_24_GND
R475
A_DIM
+3.5V_ST
+1.10V_VDDC
22uF
16V
C420
100
R420
POWER_24_ERROR_OUT
100
POWER_20_ERROR_OUT
R437
10uF
25V
C443
100
R480
PD_+12V
0
POWER_22_PWM_DIM
R471
+12V/+15V
10uF
16V
OPT
C442
100
POWER_24_INV_CTL
R425
10K
R462
OPT
NR8040T3R6N
3.6uH
L406
MLB-201209-0120P-N2
L402
+5V_USB
22uF
16V
C492
OPT
+3.3V_Normal
68uF
35V
C426
OPT
0.1uF
16V
C432
10K R463
OPT
0.1uF
16V
C416
OPT
0
POWER_24_PWM_DIM
R472
0.1uF
16V
C444
0.1uF
16V
C435
0.1uF
16V
C447
1uF
10V
C494
100K
R488
10K
R401
0.1uF
16V
C476
0.1uF
16V
C431
0.1uF
16V
C455
MLB-201209-0120P-N2
L407
10uF
10V
C430
+3.3V_Normal
33K
R439
1/10W 1.21K 1% R447
PD_+12V
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
0.1uF
16V
C408
OPT
0.1uF
16V
C412
PD_+12V
10K
OPT
R446
22K
R435
OPT
PANEL_VCC
0.1uF
50V
C418
0
POWER_18_A_DIM
R451
100pF
50V
C439
+3.5V_ST
0.1uF
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_EXCEPT_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
OPT
10uF
10V
C461
ERROR_OUT
0
POWER_20_A_DIM
R453
+3.5V_ST
+12V/+15V
11K
1%
R607
BLM18PG121SN1D
L403
BLM18PG121SN1D
L425
6.8K
OPT
R418
CIS21J121
L407-*1
0.1uF
16V
C441
+24V
CIS21J121
L404-*1
0
POWER_22_A_DIM
R485
10K
R434
POWER_ON/OFF_1
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
TJ3940S-2.5V-3L
IC402
1
GND
2
VOUT
3
VIN
0.1uF
50V
C413
0
R608
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
10K
R490
OPT
D400
A1
C
A2
RL_ON
EXT12V_CTRL
BLM18PG121SN1D
EXT_SPK
L426
+5V_SUB_AMP
2.2K
R405
2.2K_PANEL_DISCHARGE
2.2K
R407
2.2K_PANEL_DISCHARGE
2.7K 1%
PD_+12V
R448
0 5%
PD_+3.5V
R450
1
R473
3K
3K_PANEL_DISCHARGE
R407-*1
3K
R405-*1
3K_PANEL_DISCHARGE
3.9K
R606
PWM_PULL-DOWN_3.9K
1K
R606-*1
PWM_PULL-DOWN_1K
0.01uF
50V
C436
0.01uF
0.015uF
50V
C409
0.015uF
3300pF
50V
C448
3300pF
C488
I2C_SDA
33
R492
FOR LPB MODEL
I2C_SCL
12507WR-08L
P405
FOR LPB MODEL
1
2
3
4
5
6
7
8
9
33
R491
FOR LPB MODEL
8.2K
1%
R482
POWER_+24V
MMBT3906(NXP)
Q402
E
B
C
MMBT3904(NXP)
Q401
E
B
C
MMBT3904(NXP)
Q405
E
B
C
MMBT3904(NXP)
Q407
E
B
C
MMBT3904(NXP)
Q406
OPT
E
B
C
MMBT3904(NXP)
Q400
E
B
C
100uF
16V
C401
OPT
100uF
16V
C402
OPT
APX803D29
IC408
POWER_DET_DIODES
1
GND
3
VCC
2
RESET
NCP803SN293
IC408-*1
POWER_DET_ON_SEMI
1
GND
3
VCC
2
RESET
NCP803SN293
PD_+12V_PWR_DET_ON_SEMI
IC409-*1
1
GND
3
VCC
2
RESET
APX803D29
IC409
PD_+12V_PWR_DET_DIODES
1
GND
3
VCC
2
RESET
100
R445
AO3407A
Q403
G
D
S
5.1K
R405-*2
5.1K_PANEL_DISCHARGE
5.1K
R407-*2
5.1K_PANEL_DISCHARGE
20110324
GP3_S7LR
POWER_LARGE 4
#13 <--> #20
NC
16
NC
PWM_DIM
18
4A
NC
(PSU)
GND
R2
GND
INV_ON
New item
VBR-A
GND
SHARP
Max 1000mA
Vout=0.8*(1+R1/R2)=1.5319
PWM_DIM
PWM_DIM
Err_out
+1.5V_DDR
PWM_DIM
24
Err_out
CMO10"LED
PWM_DIM
INV_ON
$ 0.165
Vd=550mV
12V -->3.58V --> 3.82V (3.68V)
23
INV_ON
GND
16
NC
INV_ON
LGD LPB/
GND
Err_out
IPS-@
+3.3V_Normal
--> NC
24
FROM LIPS & POWER B/D
PWM_DIM
R1
780 mA
NC
GND
LGD(PSU)
OS LPB
err_out
or LIPS
PANEL_POWER
Vout=(1+R1/R2)*0.765=5.03V
+3.5V_ST -> 3.375V
R1
(PSU)
err_out
2000 mA
32LE5300-TA
60:PWM
32LE5300-TA
INV_ON
PWM_DIM
INV_ON
1.5A
NC
<LED MODULE PIN MAP -> latest update 20100618>
22
LGD 10"LED
INV <--> MAIN
60:NC
S7LR core 1.2V volt
NC
(PSU)
GND
R2
(PSU)
#11 <--> #24
52/60:ERROR
300 mA
Vout=0.827*(1+R1/R2)=1.225V
GND
NC
GND
INV_ON
(PSU)
24V-->3.78V --> 3.92V (3.79V)
ST_3.5V--> 3.375V --> 3.46V
NC
AUO 10"LED
NC
<MODULE PIN MAP>
--> NC
+2.5V/+1.8V
#12 <--> #18
18
INV_ON
32LE4500-TA
PIN No
Power_DET
NC
#14 <--> #22
A-DIM
(PSU)
26/32HD:NC
NC
20
GND
NC
PWM_DIM
(PSU)
+5V_USB
LGD edge led error-out use or not? checking is necessary...
R1
NC
3A
18.5V-->3.5V --> 3.75V (3.59V)
err_out
20
22
--> NC
AUO 10"Lamp
PIN No
--> NC
err_out
26/32/52:PWM
23
<Module Inv to Main Pin Connection>
CMO10"Lamp
NC
R2
26/32/52:GND
INV_ON
20V-->3.51V --> 3.76V (3.59V)
FOR LPB Download
[To LED DRIVER]
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

LG LT36 Series Specifications

General

Brand	LG
Model	LT36 Series
Category	LCD TV
Language	English