DOWNLOAD LG 26LV2500-DG (CHASSIS:LT01P) Service Manual ↓ Size: 8.24 MB | Pages: 58 in PDF or view online for FREE

Model
26LV2500-DG (CHASSIS:LT01P)
Pages
58
Size
8.24 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
26lv2500-dg-chassis-lt01p.pdf
Date
PREV: LG 26LV2500-DA (CHASSIS:LT01T) Service Manual

LG 26LV2500-DG (CHASSIS:LT01P) Service Manual ▷ View 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.
MDL61930001
GAS5
DO_NOT_APPLY
MDL61930001
GAS3
DO_NOT_APPLY
MDL61930001
GAS6
DO_NOT_APPLY
MDL61930001
GAS2
DO_NOT_APPLY
MDL61930001
GAS1
DO_NOT_APPLY
MDL61930001
GAS7
DO_NOT_APPLY
MDL61930001
GAS4
DO_NOT_APPLY
MDS62110205
GAS3-*2
7.5T_GAS
MDS62110209
GAS7-*5
8.5T_GAS
MDS62110204
GAS1-*1
5.5T_GAS
MDS61887708
GAS4-*4
12.5T_GAS
MDS62110204
GAS3-*1
5.5T_GAS
MDS61887708
GAS5-*4
12.5T_GAS
MDS61887708
GAS7-*4
12.5T_GAS
MDS62110204
GAS4-*1
5.5T_GAS
MDS62110205
GAS5-*2
7.5T_GAS
MDS62110205
GAS4-*2
7.5T_GAS
MDS62110209
GAS1-*5
8.5T_GAS
MDS62110205
GAS2-*2
7.5T_GAS
MDS62110209
GAS3-*5
8.5T_GAS
MDS62110209
GAS5-*5
8.5T_GAS
MDS62110209
GAS6-*5
8.5T_GAS
MDS62110205
GAS1-*2
7.5T_GAS
MDS61887708
GAS6-*4
12.5T_GAS
MDS62110204
GAS6-*1
5.5T_GAS
MDS61887708
GAS2-*4
12.5T_GAS
MDS61887708
GAS1-*4
12.5T_GAS
MDS62110204
GAS2-*1
5.5T_GAS
MDS62110205
GAS6-*2
7.5T_GAS
MDS62110205
GAS7-*2
7.5T_GAS
MDS62110204
GAS5-*1
5.5T_GAS
MDS62110204
GAS7-*1
5.5T_GAS
MDS62110209
GAS2-*5
8.5T_GAS
MDS62110209
GAS4-*5
8.5T_GAS
MDS61887708
GAS3-*4
12.5T_GAS
MDS62110206
GAS7-*6
6.5T_GAS
MDS62110206
GAS3-*6
6.5T_GAS
MDS62110206
GAS2-*6
6.5T_GAS
MDS62110206
GAS4-*6
6.5T_GAS
MDS62110206
GAS5-*6
6.5T_GAS
MDS62110206
GAS6-*6
6.5T_GAS
MDS62110206
GAS1-*6
6.5T_GAS
MDS62110214
GAS6-*3
9.5T_GAS
MDS62110214
GAS1-*3
9.5T_GAS
MDS62110214
GAS4-*3
9.5T_GAS
MDS62110214
GAS2-*3
9.5T_GAS
MDS62110214
GAS7-*3
9.5T_GAS
MDS62110214
GAS3-*3
9.5T_GAS
MDS62110214
GAS5-*3
9.5T_GAS
SMD_GAS
20110324
20
GP3_S7LR
SMD GASKET
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.
SMALL_TN_LED_DRIVER
C10008
0.1uF
50V
C10013
1000pF
50V
Q10001
AP18T10GH
S
D
G
R10009
51K 1%
OPT
C10001
2.2uF
50V
C10018
2.2uF
100V
R10019-*1
11K
1/10W
21.5"
C10009
1uF
10V
R10005
100
1/10W
OPT
D10001
PDS5100H-13
R10007
4.7
1/10W
R10017
0.1
1%
C10015
1000pF
50V
R10001
100
1/10W
C10011
1000pF
50V
OPT
L10001
33uH
+24V_LED_driver
C10020
2.2uF
100V
OPT
R10008
16K 1%
PWM_DIM
R10006
390
1/10W
C10016
10uF
100V
OPT
C10003
100pF
50V
IC10000
MAX16814
1
IN
3
COMP
7
SETI
9
SGND
10
DIM
11
OUT1
12
OUT2
13
LEDGND
14
OUT3
15
OUT4
16
CS
17
PGND
18
NDRV
19
DRV
20
VCC
5
FLT
8
RSDT
6
OVP
4
RT
2
EN
21
[EP]PGND/LEDGND
R10004
100K
1/10W
C10004
100pF
50V
C10017
1000pF
50V
C10019
1000pF
50V
R10002
10K
1/10W
OPT
C10006
2200pF
50V
R10014
7.5K
1/8W
C10014
10uF
100V
R10016
3K
1/8W
C10005
0.1uF
50V
WLED_ENABLE
R10019
16K
1/10W
18.5"
C10012
2.2uF
100V
ERROR_OUT
R10012
5.1
OPT
C10002
2.2uF
50V
P10000
10031HR-H06
LGD
1
2
3
4
5
6
7
C10010
1000pF
50V
OPT
R10018
560K
1/10W
R10003
100
1/10W
C10021
0.1uF
50V
R10020
0
1/10W
5%
NON_LGD
R10021
0
1/10W
5%
NON_LGD
R10022
0
1/10W
5%
LGD
R10023
0
1/10W
5%
LGD
C10022
10uF
100V
OPT
C10007
0.33uF
50V
R10011-*1
27K
1/10W
1%
LGD
R10013-*1
27K
1/10W
1%
LGD
R10011
47K
1/10W
1%
AUO_CPT
R10013
51K
1/10W
5%
AUO_CPT
P10001
12507WR-06L
NON_LGD
1
2
3
4
5
6
7
R10010
10K
1/8W
R10024
3.9K
PWM_PULL_DOWN
R10011-*2
59K
1/16W
1%
CMI
R10013-*2
59K
1/16W
1%
CMI
R10019-*2
13K
1/10W
CMI_21.5"
R10015
12
1/10W
5%
R10019-*3
18K
1/10W
CMI_18.5"
LED driver circuit for TN module
Operating Freq.
R111 : 470 --> 390
F=7.35x10^9/RT
R120 : 6.8K --> 3K
2010.06.30. hwson 
for thermal Issue
close to IC10000
R121 : 0.03 --> 0.1
close to IC10000
2010.06.30 HWSON
C106 : 0.68uF --> 0.33uF
R113/R114
C104 : 10uF --> 2.2nF
2010.02.07 for PQ/19V_LED
ESD protection solution
must be modifed
wafer modify & resister add
must be modifed
LED driver
2011.05.09
29
S7LR SMALL TN
56.0
50mA_Typ
61.35mA
57.6V_Max
34.0
51.2
47.6
11Kohm
CMI_18.5
52.8
36.0V_Max
60mA_Typ
63.85V
11Kohm
Remark
560Kohm
52.8V_Typ
57.6
560Kohm
560Kohm
CMI_21.5_FHD
28.0
120mA_Max
63mA_Max
Remark
34.0
44.8V_Typ
50.85mA
Max
R10013
48.0
44.28V
47Kohm
39.2
LGD_21.5_FHD
30.0
Typ
39.50V
ILED spec
560Kohm
16Kohm
34.0V_Max
OVP = 1.23*(1+R1/R2)
AUO_18.5
R10018
Module
56mA_Max
34.0V_Typ
R10019
560Kohm
110mA_Typ
Vs spec
Module
44.8
CMI_21.5
54.21V
CMI_18.5_HD
LGD_21.5
51Kohm
R10011
47.6V_Max
51.2V_Typ
63.85V
AUO_21.5_FHD
AUO_18.5_HD
27Kohm
56.0V_Max
59Kohm
33.0
13Kohm
111.11mA
AUO_21.5
-
min
27Kohm
59Kohm
ILED = 1500/RSETI
36.0
33.0V_Typ
18Kohm
CPT_21.5_FHD
52.0V_Typ
560Kohm
57.6V_Max
CPT_21.5
11Kohm
63.85V
52.0
57.6
46.4
AUO_18.5
Module
AUO_21.5
CPT_21.5
CMI_21.5
CMI_18.5
LGD_21.5
Forward voltage spec.
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.
SMALL_TN_LVDS
RXACK-
L3001
120-ohm
HD_18.5
RXA1-
P3001
FF10001-30
HD_18.5
1
[30]
2
[29]
3
[28]
4
[27]
5
[26]
6
[25]
7
[24]
8
[23]
9
[22]
10
[21]
11
[20]
12
[19]
13
[18]
14
[17]
15
[16]
16
[15]
17
[14]
18
[13]
19
[12]
20
[11]
21
[10]
22
[9]
23
[8]
24
[7]
25
[6]
26
[5]
27
[4]
28
[3]
29
[2]
30
[1]
31
.
RXA3+
C3002
0.1uF
16V
FHD_21.5
C3003
10uF
16V
OPT
RXA3+
RXB2+
RXB1+
RXA0-
C3005
0.1uF
16V
HD_18.5
RXB3+
RXB0-
RXA2+
RXBCK+
RXA3-
RXACK-
RXB2-
L3000
120-ohm
FHD_21.5
RXA2+
RXA0+
RXA3-
C3004
1000pF
50V
OPT
P3000
FF10001-30
FHD_21.5
1
[30]
2
[29]
3
[28]
4
[27]
5
[26]
6
[25]
7
[24]
8
[23]
9
[22]
10
[21]
11
[20]
12
[19]
13
[18]
14
[17]
15
[16]
16
[15]
17
[14]
18
[13]
19
[12]
20
[11]
21
[10]
22
[9]
23
[8]
24
[7]
25
[6]
26
[5]
27
[4]
28
[3]
29
[2]
30
[1]
31
.
RXA2-
RXA4-
RXB0+
RXACK+
RXB3-
C3000
10uF
16V
OPT
RXB1-
PANEL_VCC
RXACK+
RXA1+
RXA0+
C3001
1000pF
50V
OPT
PANEL_VCC
RXA0-
RXA2-
RXB4-
RXA1-
A_DIM
RXA1+
RXBCK-
RXB4+
D9904
5.6V
SIDE_CVBS
ADMC5M03200L_AMODIODE
JK9901
KJA-PH-1-0177
SIDE_CVBS
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
D9901
30V
SIDE_CVBS
ADUC30S03010L_AMODIODE 
C9906
100pF
50V
SIDE_CVBS
SIDEAV_R_IN
R9906
470K
SIDE_CVBS
R9914
10K
SIDE_CVBS
R9911
10K
SIDE_CVBS
R9913
10K
SIDE_CVBS
C9901
100pF
SIDE_CVBS
L9903
BLM18PG121SN1D
SIDE_CVBS
SIDEAV_CVBS_IN
C9905
100pF
50V
SIDE_CVBS
L9901
BLM18PG121SN1D
SIDE_CVBS
+3.3V_Normal
R9916
12K
SIDE_CVBS
SIDEAV_DET
R9905
470K
SIDE_CVBS
D9903
5.6V
SIDE_CVBS
ADMC5M03200L_AMODIODE
R9917
12K
SIDE_CVBS
D9902
5.6V
OPT
ADMC5M03200L_AMODIODE
R9915
1K
SIDE_CVBS
SIDEAV_L_IN
R9907
75
SIDE_CVBS
L9902
BLM18PG121SN1D
SIDE_CVBS
C9907
100pF
OPT
RXA4+
LVDS_SMALL_TN
[30Pin HD LVDS Connector]
 (For HD 60Hz_Small)
[30Pin FHD LVDS Connector]
 (For FHD 60Hz_Small)
LVDS&SIDE AV
2011.05.10
30
S7LR SMALL TN
SIDE CVBS PHONE JACK
(New Item Development)
THERMAL
THERMAL
THERMAL
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.
R7511
6.8K
OPT
C7864
100pF
50V
OPT
C7547
0.1uF
16V
C7542
3.3uF
50V
C7959
0.1uF
16V
OPT
C7550
10uF
25V
L7505
R7540
120K
1%
L7514
3.6uH
NR8040T3R6N
+3.5V_ST
+2.5V_Normal
C7527
0.1uF
50V
R7515
10K
IC7861
AOZ1072AI-3 
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R7548
2.7K
1%
R7542
22K
OPT
C7867
0.1uF
16V
R7567
10K
1%
C7862
10uF
25V
R7864
2.2K
PANEL_DISCHARGE_RES
C7958
0.1uF
16V
+3.5V_ST
R7522
10K
R7581
1.6K
1/8W
1%
+12V/+15V
C7922
0.1uF
50V
C7865
22uF
16V
Q7521
AO3407A
G
D
S
C7529
10uF
16V
OPT
Q7505
2SC3052
E
B
C
+5V_Normal
C7933
0.01uF
50V
C7578
0.1uF
16V
IC7509
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
R7559
12K
C7525
0.01uF
25V
PANEL_VCC_0.01uF
R7538
6.8K
1%
R7862
22K
C7519
1uF
25V
L7508
4.7uH
SP-7850_4.7
R7525
68K
1/16W
5%
C7861
10uF
25V
C7502
0.1uF
50V
R7586
100
1%
OPT
+12V/+15V
Q7503
2SC3052
OPT
E
B
C
C7552
10uF
25V
R7565
51K
1%
+3.5V_ST
+24V/+15V
R473
1
+3.3V_Normal
L7504
MLB-201209-0120P-N2
R7583
0
1/16W
5%
OPT
INV_CTL
RL_ON_BUFFER
R7529
100K
C7526
0.1uF
16V
WLED_ENABLE
R7866
12K
L7509
3.6uH
NR8040T3R6N
C7570
0.1uF
16V
C7533
0.1uF
50V
C7532
10uF
25V
C7863
2200pF
PANEL_VCC
R7570
18K
R7585
100K
OPT
POWER_DET
C7538
10uF
10V
R7860
10K
D7500
MBRA340T3G
L7912
MLB-201209-0120P-N2
R7543
30K
1/10W
1%
+5V
+3.3V_Normal
R7870
10K
1%
R7867
10K
IC7507
AOZ1072AI-3 
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C7537
10uF
25V
R7582
100
1%
+24V/+15V
C440
0.1uF
16V
L7862
3.6uH
NR8040T3R6N
RL_ON_BUFFER
+24V/+15V
R7521
10K
OPT
C7524
220pF
50V
C7545
0.1uF
50V
C7514
0.1uF
50V
+3.5V_ST
C7924
0.1uF
50V
R7523
22K
OPT
PANEL_CTL
R7516
10K
+24V_LED_driver
Q7502
2SC3052
E
B
C
R7519
22
1/16W
5%
+24V/+15V
C7932
3.3uF
50V
IC7512
NCP803SN293
OPT_LIPS_PWR_DET_ONSEMI
1
GND
3
VCC
2
RESET
C7540
3.3uF
50V
R7527
22K
OPT
C7560
2200pF
R7861
27K
C7517
68uF
35V
Q7506
AO3407A
G
D
S
C7522
1uF
50V
R7561
100K
+12V/+15V
R7571
22
R7500
10K
R7569
10K
OPT
R7503
22K
R7566
1.5K
1%
+5V_Normal
C403
10uF
10V
C7536
3.3uF
50V
POWER_ON/OFF_1
Q7504
SI4124DY-T1-GE3(VISHAY)
3
S_3
2
S_2
4
G
1
S_1
5
D_1
6
D_2
7
D_3
8
D_4
+24V/+15V
IC7502
MP8670DN-LF-Z
3
VCC
2
BST
4
BG
1
SW
5
GND
6
FB
7
EN/SYNC
8
IN
R7531
2.7K
C7926
0.01uF
50V
C7544
0.1uF
50V
R7501
27K
R7547
15K
1%
R7560
10K
R7865
0
IC7503
MP4460DQ-LF-Z
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
C7571
10uF
10V
C7503
2.2uF
50V
C7925
2.2uF
50V
JK7500
JPD003N-M432-4F
GND
SW
24V
C7866
0.1uF
16V
R7530
22K
R7584
27K
1/16W
1%
OPT
C7505
0.01uF
50V
C7565
100pF
50V
R7517
10K
OPT
L7861
R7863
2.2K
PANEL_DISCHARGE_RES
+24V
R7514
1K
L7913
CPI2520NHL3R3ME
2520
3.3uH
+24V_LED
C7543
0.1uF
50V
C7501
0.1uF
50V
+24V_LED
C432
0.1uF
16V
Q7501
AO3407A
G
D
S
C7868
0.1uF
50V
C7566
22uF
16V
C7961
22uF
16V
C7960
0.1uF
16V
+5V
C7962
0.1uF
16V
IC7952
AP1117EG-13 
1
ADJ/GND
2 OUT
3
IN
R7869
51K
1%
R7868
24K
1%
110
R7956
R7957
330
R7958
1
1/10W
+5V_TUNER
10uF
C461
10V
+3.5V_ST
IC407
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
560pF
C467
50V
+1.5V_DDR
C472
22uF
10V
R433
10K
L420
BLM18PG121SN1D
+3.3V_Normal
C475
0.1uF
16V
C476
0.1uF
16V
L7954
BLM18PG121SN1D
R443
10K
C423
4.7uF
16V
OPT
R438
22K
+3.3V_Normal
Q403
RSR025P03
S
D
G
R446
10K
OPT
L403
BLM18PG121SN1D
C445
0.1uF
16V
OPT
Q400
2SC3052
E
B
C
C425
0.1uF
16V
R445
2.2K
+3.5V_ST
C437
22uF
16V
C435
0.1uF
16V
R434
10K
POWER_ON/OFF_1
C7531
4.7uF
16V
C7504
0.015uF
50V
PANEL_VCC_0.015uF
C453
22uF
10V
C444
0.1uF
16V
L413
R436
15K
+3.3V_Normal
+1.10V_VDDC
C456
22uF
10V
+3.5V_ST
C447
0.1uF
16V
R
4
4
1
5
6
K
1
/
1
6
W
1
%
L415
3.6uH
NR8040T3R6N
C431
0.1uF
16V
FB_CORE
C448
3300pF
50V
C441
0.1uF
16V
C439
100pF
50V
R428
10K
IC403
TPS54319TRE
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]
R400
0
OPT
C430
10uF
10V
R432
330K
1/16W
5%
R
4
4
2
2
7
K
1
/
1
6
W
1
%
R416
56K
1%
C493
3300pF
50V
C405
10uF
25V
C494
1uF
10V
R607
11K
1%
C489 100pF
L401
L406
3.6uH
NR8040T3R6N
R410
10K
+12V/+15V
R423
12K
1%
C492
22uF
16V
OPT
C420
22uF
16V
+5V_USB
OLP
R456
4.7K
1%
R457
4.3K
1%
R7537
100K
1/8W
5%
C488
3300pF
50V
R7544
100K
1/10W
1%
C413
0.1uF
50V
R499
0
1/16W
5%
IC402
TJ3940S-2.5V-3L
1
GND
2
VOUT
3
VIN
C7541
0.1uF
50V
OPT
R7524
10K
+3.5V_ST
R7505
10K
RL_ON
R7507
4.7K
OPT
Q7507
2SC3052
OPT
E
B
C
Q7508
RT1P141C-T112
OPT
1
2
3
R7504
10K
OPT
R7506
10K
OPT
+3.5V_ST
RL_ON_BUFFER
R7508
0
R7502
10K
OPT
IC401
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
C7957
0.1uF
16V
OPT
R180
10K
OPT
+3.3V_Normal
R181
1K
OPT
Q7500
MMBT3904(NXP)
E
B
C
Q7520
MMBT3904(NXP)
E
B
C
IC7509-*1
APX803D29
PWR_DET_DIODES
1
GND
3
VCC
2
RESET
IC7512-*1
APX803D29
OPT_LIPS_PWR_DET_DIODES
1
GND
3
VCC
2
RESET
Vout=(1+R1/R2)*0.8
2A
24V-->3.48V
+2.5V
Switching noise reducing [MPS recommend]
R1
Vd=550mV
4A -> 3A modify 090916
close to pin
New item
AO3407A Vgs : 10.8V(24V input)
24V->15V
Power for LED driver
300 mA
AMP_VCC Control
2A
close to IC7502
R2
MAX 1A
R2
+5V to LDO(IC7952)
R2
+5V_Normal
 Max 1A
R1
AMP_VCC
real output : 12.3V
UNDER CHECKING
R1
Vout=0.8*(1+R1/R2)
AO3407A Vgs : 8.3V(15V input)
ST_3.5V-->3.5V --> 3.375V
PANEL_POWER
24V->3.5V
Placed on SMD-TOP
Power_DET
AO3407A Vgs : 10.8V
3.3K -> 1K (threshold voltage up)
POWER
2011.06.17
32
S7LR SMALL TN
LDO for Tuner, Hongsu, 1115
6.8V
Max 1000mA
Vout=0.8*(1+R1/R2) = 1.5319
R2
R1
1.5A
+1.5V_DDR
S7LR core 1.2V volt
780 mA
+3.3V_Normal
Vout=0.827*(1+R1/R2)=1.225V
3A
R1
R2
(LIPS : 3.9K)
(LIPS : 1.2K)
(LIPS)
(LIPS)
(LIPS)
(LIPS_PWR_DET_ONSEMI)
(PWR_DET_ONSEMI)
2000 mA
R1
R2
Vout=(1+R1/R2)*0.765=5.03V
+5V_USB
3A
* option : +5V_TUNER
2.5A
1A
1A
(LIPS)
 Not used :
 only for small(ready)
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