LG 32LT777H (CHASSIS:LA2FZ) 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.
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.
DDC_SDA_2_JACK
R3314
100
5V_HDMI_3_JACK
5V_HDMI_2_JACK
R3324
47K
R3316
1K
R3317
1K
HDMI_HPD_4_JACK
C3303
0.1uF
16V
R3326
47K
R3313
100K
C3301
0.1uF
16V
R3339
47K
R3337
47K
DDC_SCL_2_JACK
R3307
100K
5V_HDMI_2_JACK
HDMI_HPD_2_JACK
5V_HDMI_4_JACK
R3311
1K
+5V_NORMAL
C3302
0.1uF
16V
R3338
47K
DDC_SCL_4_JACK
5V_HDMI_4_JACK
DDC_SDA_2_JACK
R3318
4.7K
HPD_PULL_UP
R3308
100
R3309
100
R3340
47K
DDC_SDA_3_JACK
DDC_SCL_2_JACK
R3310
1K
DDC_SCL_4_JACK
DDC_SCL_3_JACK
R3315
100
+5V_NORMAL
DDC_SDA_4_JACK
DDC_SDA_4_JACK
+5V_NORMAL
CEC_REMOTE
R3312
4.7K
HPD_PULL_UP
Q3301
MMBT3904(NXP)
E
B
C
Q3302
MMBT3904(NXP)
E
B
C
5V_HDMI_3_JACK
D0-_HDMI3_JACK
Q3303
MMBT3904(NXP)
E
B
C
CK+_HDMI3_JACK
CEC_REMOTE
HDMI_HPD_3_JACK
D2-_HDMI3_JACK
R3329
100
DDC_SDA_3_JACK
D1+_HDMI3_JACK
R3327
100K
R3336
4.7K
HPD_PULL_UP
D1-_HDMI3_JACK
R3328
100
D2+_HDMI3_JACK
DDC_SCL_3_JACK
D0+_HDMI3_JACK
CK-_HDMI3_JACK
R3331
1K
R3330
1K
JK3301
YKF45-7058V
14
NC
13
CEC
5
DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
JK3302
YKF45-7058V
14
NC
13
CEC
5
DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
JK3303
RSD-105156-100
14
RESERVED
13
CEC
5
TMDS_DATA1_SHIELD
20
BODY_SHIELD
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
2
TMDS_DATA2_SHIELD
19
HOT_PLUG_DETECT
18
VDD[+5V]
10
TMDS_CLK+
4
TMDS_DATA1+
1
TMDS_DATA2+
17
DDC/CEC_GND
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
3
TMDS_DATA2-
16
SDA
7
TMDS_DATA0+
6
TMDS_DATA1-
15
SCL
D3302
MMBD6100
A
2
C
A
1
D3301
MMBD6100
A
2
C
A
1
D3303
MMBD6100
A
2
C
A
1
HDMI_ARC
R3300
0
R3341
0
D1-_HDMI4_JACK
D2+_HDMI4_JACK
CK-_HDMI4_JACK
D1+_HDMI4_JACK
D2-_HDMI4_JACK
CK+_HDMI4_JACK
D0+_HDMI4_JACK
D0-_HDMI4_JACK
R3342
0
R3343
0
R3344
0
R3345
0
R3346
0
R3347
0
R3348
0
D0-_HDMI2_JACK
D2+_HDMI2_JACK
D2-_HDMI2_JACK
D1+_HDMI2_JACK
CK+_HDMI2_JACK
D0+_HDMI2_JACK
CK-_HDMI2_JACK
D1-_HDMI2_JACK
CEC_REMOTE
R3354
0
R3355
0
R3351
0
R3350
0
R3353
0
R3349
0
R3356
0
R3352
0
R3363
10K OPT
+3.5V_ST
R3362
10K
Q3306
MMBT3904(NXP)
E
B
C
+3.5V_ST
GND
Q3305
MMBT3904(NXP)
E
B
C
C3304
0.1uF
16V
0.1uF
16V
D3304
OPT
CEC_REMOTE
GND
GND
POWER_ON/OFF1
BSS83
Q3300
S
B
D
G
C3305
0.1uF
16V
0.1uF
16V
R3364
10K
BSS83
Q3304
S
B
D
G
R3302
68K
OPT
D3306
AVRL161A1R1NT
OPT
CEC_CTL
+3.5V_ST
R3365
10K
R3366
10K
OPT
D3305
GND
D3307
AVRL161A1R1NT
OPT
GND
R3360
68K
GND
+3.5V_ST
R3303
62K
OPT
HDMI_CEC_PTC
HDMI_CEC_MTK
IC3300
74LX1G14CTR
3
GND
2
1A
4
1Y
1
NC
5
VCC
R3367
10K
GND
R3369
10K
CEC_CTL
R3368
10K OPT
POWER_ON/OFF1
R3361
62K
R3370
22
R3371
22
JP3300
R3372
10K
HPD_PULL_DOWN
R3373
10K
HPD_PULL_DOWN
R3374
10K
HPD_PULL_DOWN
PTC_HPD
+3.5V_ST
R3377
0
R3376
0
C3306
0.1uF
0.1uF
MTK_HPD
HPD_CTL
IC3301
NLASB3157DFT2G
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
R3375
0
OPT
HDMI_HPD_2_JACK
UI : HDMI2
UI : HDMI3
UI : HDMI1
33
HDMI 4
2011.09.29
xxLT760H-UA
R3300 MTK Recommend : 0 Ohm
Close to Connector
Close to Connector
For ESD
For ESD
To PTC
To MTK
For CEC
From HDMI Connector
HPD SWITCH
B0 - A
L
MTK_HPD
H
B1 - A
PTC_HPD
HPD_CTL
CONNECTION
Fiber Optic
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.
+3.3V_NORMAL
R3641
2.7K
D3615
30V
OPT
C3633
18pF
50V
R3644
22
DSUB_B+
R3620
2.7K
OPT
+3.3V_NORMAL
DSUB_G+
RGB_DDC_SCL
DSUB_DET
DSUB_R+
R3643
22
R3646
10K
10K
C3615
0.1uF
0.1uF
16V
RGB_DDC_SDA
SPDIF_OUT
R3615
33
33
C3634
18pF
18pF
50V
+5V_NORMAL
DSUB_HSYNC
DSUB_VSYNC
D3616
30V
OPT
R3642
2.7K
2.7K
RGB_5V
RGB_5V
IC3600
M24C02-RMN6T
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
D3620
MMBD6100
A2
C
A1
D3623
5.6V
D3622
5.5V
ADUC 5S 02 0R5L
OPT
D3621
5.5V
ADUC 5S 02 0R5L
OPT
D3613
5.5V
5.5V
ADUC 5S 02 0R5L
OPT
JK3603
SPG09-DB-010
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
JK3602
2F01TC1-CLM97-4F
3
VIN
2
VCC
1
GND
4
SHIELD
D3625
5.6V
Diode_OLD
PC_L_IN
PC_R_IN
D3624
5.6V
Diode_OLD
JK3604
PEJ027-04
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
JP3605
JP3606
JP3607
D3624-*1
18pF
50V
18pF
50V
for EMI_Cap
D3625-*1
18pF
50V
18pF
50V
for EMI_Cap
RGB PC
SPDIF OUT
36
JACK HIGH / MID
2011.09.29
Closed to JACK
xxLT760H-UA
PC AUDIO
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.
C3802
0.1uF
C3803
0.1uF
+3.5V_ST
IR_OUT
R3814
4.7K
OPT
C3801
0.1uF
JK3803
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
IC3800
MAX3232CDR
EAN41348201
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
R3811
4.7K
OPT
JP3809
C3800
0.1uF
JP3808
R3821
100
R3820
100
+3.5V_ST
EXT_12V
+3.5V_ST
RS232_RX
RS232_TX
D3804
20V
OPT
D3805
20V
OPT
L3802
EXT_5V
L3801
SS_OLD
L3800
OPT
EXT_5V
R3806
1K
AV1_CVBS_IN
R3803
2.7K
JK3800
PPJ233-01
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]C-LUG
5C
[RD]E-LUG
4C
[RD]O-SPRING
3C
[RD]CONTACT
AV1_L_IN
+3.3V_NORMAL
AV1_R_IN
AV1_CVBS_DET
C3804
0.1uF
D3803
50V
BAP70-02
R3834
1K
D3800
5.6V
5.6V
D3801
5.6V
5.6V
D3802
5.6V
5.6V
JP3800
JP3801
JP3802
JP3803
JP3805
JP3806
JP3804
L3800-*1
CB2012PK501T
SAMHWA_NEW
L3801-*1
CB2012PK501T
SAMHWA_NEW
L3802-*1
CB2012PK501T
SAMHWA_NEW
RS232C
38
JACK_COMMON
2011.09.29
1A@5V /1A@12V FOR COMMERCIAL(RS-232C POWER)
FOR COMMERCIAL
CVBS1 REAR JACK
xxLT760H-UA
L-MONO
ESD For MTK
: D3800, D3801, D3802
: D3800, D3801, D3802
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.
IR
+3.5V_ST
+3.5V_ST
R4105
22
IR_OUT
+3.5V_ST
R4102
10K
OPT
R4108
0
0
COMMERCIAL_US
R4111
10K
COMMERCIAL_EU
+3.5V_ST
+3.5V_ST
R4104
47K
OPT
R4100
0
0
R4109
1K
COMMERCIAL_EU
R4119
47K
R4115
1K
Q4102
2SC3052
COMMERCIAL_EU
E
B
C
Q4104
2SC3052
E
B
C
Q4100
2SC3052
OPT
E
B
C
Q4101
2SC3052
OPT
E
B
C
R4107
3.3K
OPT
R4103
47K
OPT
OPT
R4101
47K
OPT
OPT
C4102
0.1uF
C4100
0.1uF
R4114
100
100
P4102
12507WR-10L
1
2
3
4
5
6
7
8
9
10
11
D4101
5.6V
AMOTECH
R4125
1.5K
OPT
D4100
5.6V
AMOTECH
R4126
1.5K
L4100
BLM18PG121SN1D
C4107
100pF
100pF
50V
D4106
5.6V
CDS3C05HDMI1
C4101
0.1uF
16V
D4104
5.6V
AMOTECH
R4124
100
C4103
0.1uF
16V
OPT
LED_W/LG_LOGO
D4105
5.6V
CDS3C05HDMI1
KEY2
R4123
100
KEY1
R4113
100
100
I2C_SDA2
I2C_SCL2
+3.5V_ST
C4104
1000pF
50V
LED_R
C4108
1000pF
50V
C4109
0.1uF
16V
C4110
0.1uF
16V
OPT
L4101
BLM18PG121SN1D
+3.3V_NORMAL
I2C_SDA3
I2C_SCL3
R4127
100
OPT
R4128
100
OPT
R4129
0
+3.5V_ST
R4118
10K
1%
R4117
10K
1%
L4102
BLM18PG121SN1D
L4103
BLM18PG121SN1D
IR & KEY
COMMERCIAL
Zener Diode is
close to wafer
41
IR / KEY
2011.09.26
To SOC
xxLT760H-UA
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