LG 22LS3700 Service Manual page 32

NON_Adapter
P3301
SMAW200-12
+15V
1
Adapter
+15V
+3.5V_ST
2 JK3300
NON_Adapter JPD003N-M432-4F
GND
L3300
3
CIS21J121
GND
4
OPT NON_Adapter
C3300 C3303
+3.5V_ST 0.1uF 0.1uF
5
16V
16V
+3.5V_ST
6
+3.3V_Normal
GND
7 OLP
OLP
R3303
R3304
10K
OLP 1K
8
OLP
INV_ON
9
WLED_ENABLE
P_DIM
10
PWM_DIM
A_DIM
11
A_DIM
NON_Adapter
R3301
NC
12
4.7K
WLED_ENABLE
+24V_LED_driver
Adapter_26inch
P3300
SM14B-SRSS-TB
24V
1
C3301 C3304
24V
2
0.1uF 0.01uF
50V 50V
24V
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
GND
10
R3302
100
ERROR_OUT
11
ERROR_OUT
INV_ON
12 WLED_ENABLE
RL_ON
NC
13
PWM_DIM
14 PWM_DIM
15
R3300
GND 0
* H/W option : Adapter_26inch
+5V_Normal
+12V/+15V
* H/W option : +5V_PANEL
L3321
CIC21J501NE
R3315
10K
OPT
C3305 C3307
10uF 10uF
IC3300
25V 25V
AOZ1051PI
PGND
1
VIN
OPT
2
C3312
R1 0.1uF
16V AGND
3
R3319 R3320
FB
56K 11K
4
1% 1%
3A
R3321
OPT
12K
C3323
1%
100pF
R2
Vout=0.8*(1+R1/R2)
+12V/+15V
+5V_USB
L3301
CIC21J501NE
R3310
10K
OPT
C3302 C3391
10uF 10uF
25V 25V IC3302
AOZ1051PI
PGND
1
VIN
OPT
2
C3392
0.1uF
R1
16V AGND
3
R3305 R3306
FB
56K 11K
4
1% 1%
3A
R3307
OPT
12K
C3390
1%
100pF
R2
Vout=0.8*(1+R1/R2)
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.
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
NON_Adapter
L3303
CIS21J121
+24V/+15V +24V_LED
Adapter
Adapter
L3308
L3304
CIS21J121
24V CIS21J121
SW
Adapter
C3316 C3317 C3320
0.1uF 0.1uF 68uF
50V 50V 35V
GND
+3.3V_Normal
3.3K -> 1K (threshold voltage up)
R3312
1K
+3.5V_ST
R3308
10K
C
OPT
R3311
R3313 10K
B
INV_CTL
6.8K
Q3300
OPT
MMBT3904(NXP) E
R3309
10K
+3.5V_ST
RT1P141C-T112
Q3302 RL_ON_BUFFER
+3.5V_ST
1 3
2
R3332
OPT
4.7K
R3323
10K
R3328 C
10K
B Q3301
MMBT3904(NXP)
E
R3324
10K
OPT
R3329
0
MAX 1A
+5V_Normal
L3309
L3305
NR8040T3R6N
BLM18PG121SN1D
3.6uH
[EP]LX
OPT OPT
NC
C3324
8 C3328 C3331
22uF
22uF
0.1uF
16V
16V 16V
SS
7
C3394
EN 0.01uF
6
50V
COMP
5
R3314
12K
C3318
2200pF
50V
2000 mA
+5V_USB +5V_Normal
L3307
Non_5V_PANEL
NR8040T3R6N
L3310
3.6uH
[EP]LX BLM18PG121SN1D
OPT
C3322 OPT
NC C3325
8 22uF C3393
22uF
16V 0.1uF
16V
16V
SS
7
C3314
EN 0.01uF
6
50V
COMP
5
R3390
12K
C3311
2200pF
50V
+5V_Normal +12V/+15V
+5V_PANEL 12V_PANEL
L3311 L3320
70-ohm 70-ohm
PANEL_VCC_0.01uF
OPT
C3337 C3340 C3342
C3345
0.015uF 0.01uF 0.1uF
10uF
50V 50V 16V
16V
AO3407A
PANEL_VCC_0.015uF
+5V_PANEL
12V_PANEL C3348
R3345
R3345-*1 4.7uF
33K 22K 16V
OPT
R3338
22K +5V_PANEL
12V_PANEL
R3346-*1 R3346
5.6K
2.7K
C
R3335
10K B Q3305
MMBT3904(NXP)
OPT
C
R3336 OPT OPT E
PANEL_CTL
10K B Q3303 R3342
22K
MMBT3904(NXP)
R3334 E
10K
+1.5V_DDR
+3.5V_ST
IC3305
AP7173-SPG-13 HF(DIODES)
L3313
BLM18PG121SN1D [EP]
IN OUT
1 8
PG FB
2 7
VCC SS
3 6
+3.3V_Normal
R3337
EN GND
10K
4 5
C3349
C3335
NON_CI_CAP
10uF 1.5A 560pF
C3338
0.1uF 50V
10V
16V
Vout=0.8*(1+R1/R2) = 1.5319
S7LR core 1.2V volt
+3.3V_Normal
C3341
0.1uF
10K
16V
R3339
+3.5V_ST
C3344
0.1uF
16V
L3312
CIC21J501NE
L3314
NR8040T3R6N
3.6uH
VIN_1 PH_3
1 12
THERMAL
NON_CI_CAP VIN_2 PH_2
2 11
C3334 17
C3336
C3350 C3352
10uF 0.1uF
GND_1 PH_1
3 IC3304 10 22uF 22uF
10V
16V
TPS54319TRE 10V 10V
GND_2 SS/TR
4 9
3A
C3346
3300pF
50V
R3347
330K
C3347
R3343
3300pF
15K
50V
Vout=0.827*(1+R1/R2)=1.225V
AMP_VCC Control
+24V/+15V
AO3407A Vgs : 10.8V(24V input)
AO3407A Vgs : 8.3V(15V input)
C3339 C3343
R3348
2.2uF
0.1uF 22K
Q3306
50V 50V
AO3407A
Adapter
G
R3341
POWER_ON/OFF_1 R3344
10K
27K
OPT
R3340
10K
C
C3351
B Q3304
0.01uF
MMBT3904(NXP)
50V
NON_Adapter
R3388 E
RL_ON_BUFFER
10K
+24V/+15V
PANEL_POWER
LIPS
R3362
3.9K
1%
Q3307
New item
R3355-*1 R3356-*1
4.7K 4.7K
C3362 LIPS
0.1uF R3363
G
16V 1.2K
PANEL_DISCHARGE_RES_4.7K
PANEL_DISCHARGE_RES_4.7K LIPS 1%
OPT PANEL_VCC
C3353
0.1uF
+3.5V_ST
50V
R3364
1/16W
C3355
0.1uF R3355 R3356
2.2K
2.2K
16V
R3365
C3364
0.1uF 1/16W
16V
PANEL_DISCHARGE_RES_2.2K
PANEL_DISCHARGE_RES_2.2K
24V->15V
* H/W option : Adapter
Max 1000mA
+1.5V_DDR
R3358
22 C3367
R3366
1/16W
1uF
0
5%
50V
Q3310
SI4124DY-T1-GE3(VISHAY)
C3363
S_1
1uF 1
25V
S_2
2
S_3
C3357 C3360 3
22uF 0.1uF G
R3350 4
16V
4.3K 10V
1%
R1 close to IC7502
R3349
4.7K
1%
R2
24V->3.5V
D3300
MBRA340T3G
close to pin
C3369
220pF
50V
+1.10V_VDDC
R3367
R3359 68K
18K
R3351 C3358
0
0.1uF
1/16W
16V
5%
FB_CORE
OPT
R3354
0 +3.3V_Normal
50V
R1
100pF
C3354
+3.5V_ST
R2
NON_CI_CAP
C3366
0.1uF
16V
POWER_ON/OFF_1
AMP_VCC
+24V_LED
C3365 +24V_LED_driver
R3361
+24V +12V/+15V
2.2uF 22K
S 50V
C3361
0.1uF S
50V Q3309
G
AO3407A
Adapter
D R3360
L3315
NON_Adapter 27K
3.3uH 2520 R3389
D
CPI2520NHL3R3ME 0
R3357 C AO3407A Vgs : 10.8V
10K
C3356 C3359
B Q3308
NON_Adapter 3.3uF 0.01uF
MMBT3904(NXP)
L3319
50V 50V
RL_ON_BUFFER
BLM18PG121SN1D C3368
E 0.01uF
50V
Power for LED driver
* H/W option : Adapter
GP4L_S7LR2
SMALL_POWER
24V-->3.48V
LIPS
+3.5V_ST ST_3.5V-->3.5V --> 3.375V
R3373
100K
LIPS_PWR_DET_ONSEMI
OPT
IC3308
LIPS R3382
NCP803SN293
10K
R3379
100
1%
VCC RESET
3 2 POWER_DET
1
OPT
LIPS_PWR_DET_DIODES
GND
(LIPS_PWR_DET_ONSEMI) C3382
IC3308-*1
0.1uF
16V APX803D29
R3374 VCC RESET
100K 3 2
1
PWR_DET_ONSEMI
GND
IC3309
R3380
NCP803SN293
0
100
1% PWR_DET_DIODES
5% VCC RESET
3 2
IC3309-*1
OPT 1
APX803D29
27K GND
VCC RESET
3 2
1%
1
Power_DET GND
UNDER CHECKING
+24V/+15V
IC3306
MP8670DN-LF-Z
C3376 C3378
C3374
0.1uF 3.3uF 3.3uF
50V 50V 50V
SW IN
1 8
+12V/+15V
BST EN/SYNC
2 7 RL_ON_BUFFER
R3381
R1
VCC FB
120K
3 6
1%
R2
real output : 12.3V
BG GND
OPT
4 5
R3383
22K
D_4
8
D_3
7
D_2
6
L3316
D_1
5
SP-7850_4.7
Placed on SMD-TOP
4.7uH
C3372 C3377 C3384
10uF 10uF
0.1uF
25V 25V
50V
* H/W option : Adapter
R3370
100K
C3370
50V
0.1uF
Switching noise reducing [MPS recommend]
IC3307 R3378
+24V/+15V
22
MP4460DQ-LF-Z EP_GND
SW_1 BST
1 10
SW_2 VIN_2
2 9
C3381 C3385
R3377
EN VIN_1 +3.5V_ST
3.3uF 0.1uF
3 8 100K
50V 50V
1/8W
5%
COMP FREQ
4 7 R3387
100K
1/10W
FB GND
5 6 1%
2.5A
R3384
30K
1/10W
1%
L3317
NR8040T3R6N
3.6uH
C3375 C3383
C3380
10uF
10uF 0.1uF
10V
10V 50V
780 mA
+3.3V_Normal
Q3312 L3318
BLM18SG700TN1D
AO3407A
70-ohm
OPT
OPT C3389
R3368 R3371 G C3379 C3387
C3373
0.1uF R3385 22uF
10K 22K
4.7uF 16V 0.1uF
10K 16V
16V
16V
R3372
100
C
R3369
10K
B Q3311
MMBT3904(NXP)
E
+2.5V
+3.3V_Normal
IC3310
+2.5V_Normal
TJ3940S-2.5V-3L
1A
VIN VOUT
3 2
Vd=550mV
NON_CI_CAP
R3386
1
C3371 1
GND
0.1uF 1/16W
5%
16V
C3386 C3388
10uF 0.1uF
10V 16V
300 mA
2011/10/10
33
LGE Internal Use Only