Read LG 37LU25 (CHASSIS:LA85D) 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.
1000pF 50V
C303
100pF
50V
C307
+3.3V_IR
KST3906-MTF
Q300
E
B
C
4.7K
R345
READY
R333
LED_AM
003:T6
4.7K
R344
LED_GR1
001:V13
LED_AM
4.7K
R348
LED_AM1
001:V13
4.7K
R349
+3.3V_IR
KST3906-MTF
Q301
E
B
C
IR
006:G11
LED_GR
003:T4
LED_GR
+3.3V_IR
1000pF
50V
C309
1000pF
50V
C301
0.1uF
C300
PANEL_POWER
220uF
16V
C302
1/10W
2K
R314
1/10W
2K
R315
1000pF 50V
C311
LED_PWM
MBW3216-501TF
L308
0
R341
0.1uF
50V
C310
+5V_ST
1000pF
50V
C313
100
R340
KEY_CTL_0
001:Q4
0.1uF
50V
C312
100
R339
KEY_CTL_1
001:Q4
0.1uF
50V
C314
READY
R342
READY
R343
EYEQ_SCL
EYEQ_SDA
EYEQ_SCL
EYEQ_SDA
MSCL
MSDA
READY
R347
READY
R346
GND
0
READY
R318
+3.3V_MULTI
GND
+3.3V_MULTI
GND
SMW200-26C
WXGA
P301
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
26
GND
+3.3V_MULTI
0
R310
0
R330
0
R311
0
R329
0
R321
0
R309
0
R300
0
R307
0
R324
0
R325
0
R326
0
R308
0
R302
0
R306
0
R331
0
R301
0
R320
0
R303
0
R323
0
R305
0
R328
0
R322
0
R304
0
R327
+3.3V_IR
3.3K
R338
R338
3.3K
R336
R336
GND
SMW200-40C
P300
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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
12505WS-08A00
IR_08P_only_26INCH
P306
1
2
3
4
5
6
7
8
9
12505WS-15A00
P304
S_Common_except_26INCH
1
SCL_EYEQ
2
SDA_EYEQ
3
GND
4
GND
5
KEY1
6
KEY2
7
3.3V_SW
8
5V_ST
9
PWM_LED
10
IR
11
EYEQ_RESET
12
GND
13
LED_G
14
LED_R/PWM
16
GND
15
GND
0.1uF
50V
READY
C305
0.1uF
50V
READY
C304
0.1uF 50V
READY C306
0.1uF 50V
READY C308
0
R334
S_Common_Except_32HD(Sharp)
4.7K
R337
S_Only_37LPL(FHD)
4.7K
MODULE SELECTION HIGH_4.7k
R312
300
R312-*1
R312-*1
MODULE SELECTION HIGH_300
1K
Mo
du
le
S
el
ec
ti
on
L
ow
R313
22
R319
22
R317
22
READY
R316
4.7K
S_32CMO_Only_Select
R332
BG2012B080TF
L301
BG2012B080TF
L302
BG2012B080TF
L303
BG2012B080TF
L309
BG2012B080TF
L310
LVDS_TXA3-
LVDS_TXA1-
LVDS_TXA2+
LVDS_TXA1+
LVDS_TXA0-
LVDS_TXA2-
LVDS_TXA0+
LVDS_TXA4+
LVDS_TXA4-
LVDS_TXA3+
LVDS_TXA0-
LVDS_TXA1-
LVDS_TXA1+
LVDS_TXA0+
LVDS_TXA2-
LVDS_TXA2+
LVDS_TXA3+
LVDS_TXA3-
LVDS_TXAC-
LVDS_TXAC+
LVDS_TXA4-
LVDS_TXA4+
LVDS_TXB0-
LVDS_TXB1-
LVDS_TXB0+
LVDS_TXB2-
LVDS_TXB1+
LVDS_TXBC-
LVDS_TXB2+
LVDS_TXB3-
LVDS_TXB3+
LVDS_TXB4-
LVDS_TXB4+
LVDS_TXBC+
LVDS_TXAC+
LVDS_TXAC-
LVDS_TXBC-
LVDS_TXB3-
LVDS_TXB4-
LVDS_TXB4+
LVDS_TXB3+
LVDS_TXBC+
LVDS_TXB2+
LVDS_TXB1+
LVDS_TXB0+
TXB1+[8]
TXB0-[11]
TXB2-[7]
TXBC+[4]
TXB4+[0]
TXB3+[2]
TXB0+[10]
TXB3-[3]
TXB4-[1]
TXBC-[5]
TXB2+[6]
TXB1-[9]
TXA0+[10]
TXA4+[0]
TXA0-[11]
TXAC+[4]
TXA1-[9]
TXA1+[8]
TXA4-[1]
TXA2-[7]
TXA3+[2]
TXA3-[3]
TXAC-[5]
TXA2+[6]
LVDS_TXB0-
LVDS_TXB2-
LVDS_TXB1-
IR & LED & Control
WGXA
FHD
LED G
LED R
Key1
GND
Key2
ST_5V
GND
IR
LVDS data format sel
HD: PIN9 / FHD: PIN7
Low: VESA
High: JEIDA
High(300)
26"AUO(HD)
32"CMO(HD)
42"AUO(HD)
High(4.7K)
32"Sharp(HD)
37"42"LPL(HD)
37"LPL(FHD)
42"AUO(FHD)
47"CMO(FHD)
52"Sharp(FHD)
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