LG 42LH301C (CHASSIS:LD91A) 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.
LVB_3M
LVB_0M
LVB_1P
LVB_2M
LVB_CKP
LVB_CKM
LVB_4P
LVB_0P
LVB_2P
PANEL_POWER
LVB_1M
LVB_4M
LVB_3P
+3.3V
SDA_SUB/AMP
IR
+5V_ST
SCL_SUB/AMP
KEY1
KEY2
+3.3V_ST
LED_ON/LED_R
R1318
100
100
R1317
100
100
C1314
0.1uF
16V
C1305
0.1uF
C1310
0.1uF
16V
12PIN IR
C1307
0.1uF
C1306
0.1uF
0.1uF
16V
19~22/26LH2000
C1308
0.1uF
16V
0.1uF
16V
19~22/26LH2000
C1312
1000pF
50V
8PIN IR
C1315
1000pF
50V
C1313
1000pF
50V
8PIN IR
C1311
1000pF
50V
12PIN IR
C1309
100pF
100pF
50V
ZD1305
5.6V
AMOTECH
8PIN IR
ZD1303
5.6V
AMOTECH
ZD1300
5.6V
AMOTECH
19~22/26LH2000
ZD1302
5.6V
AMOTECH
ZD1301
5.6V
AMOTECH
19~22/26LH2000
ZD1306
5.6V
AMOTECH
8PIN IR
ZD1304
5.6V
AMOTECH
D1300
5.6V
CDS3C05HDMI1
12PIN IR
D1301
5.6V
CDS3C05HDMI1
12PIN IR
LVA_CKM
LVA_3P
LVA_0P
LVA_4M
LVA_2M
LVA_0M
LVA_1M
LVA_2P
LVA_1P
LVA_3M
LVA_CKP
LVA_4P
MEMC_RESET
MEMC_SDA 1:L21
MEMC_SCL 1:L21
R1370
3.3K
OPT
R1379
0
LVDS_SEL_GND
R1371
0
BIT_SEL_GND(8bit)
R1366
22
R1365
22
LVDS_SEL
R1367
22
OPT
R1373
0
OPT
BIT_SEL
C1303
220uF
16V
OPT
OPT
WARM_LED_ON/LED_W
LVB_CKP
LVB_CKM
LVB_1M
LVB_0M
LVB_3M
LVB_2M
LVB_0P
LVB_3P
LVB_2P
LVB_1P
LVA_2P
LVA_3P
LVA_2M
LVA_3M
LVA_CKP
LVA_CKM
LVA_1M
LVA_1P
LVA_0M
LVA_0P
+3.3V
OPC_EN
OPC_OUT
1:V17;8:M8
PWM_DIM
+3.3V
+3.3V
L1300
BLM18PG121SN1D
L1301
BLM18PG121SN1D
L1302
BLM18PG121SN1D
19~22/26LH2000
L1303
BLM18PG121SN1D
L1304
BLM18PG121SN1D
19~22/26LH2000
L1305
BLM18PG121SN1D
8PIN IR
L1306
BLM18PG121SN1D
8PIN IR
L1307
BLM18PG121SN1D
L1308
BLM18PG121SN1D
12PIN IR
P1304
12507WS-12L
12PIN IR
1
SCL
2
SDA
3
GND
4
KEY1
5
KEY2
6
5V_ST
7
GND
8
WARM_ST
9
IR
10
GND
11
3.3V
12
PWR_ON
13
IR_OUT
+5V_ST
+5V_ST
Q1301
2SC3052
OPT
E
B
C
Q1300
2SC3052
OPT
E
B
C
P1305
12507WS-08L
8PIN IR
1
KEY1
2
KEY2
3
GND
4
5V_ST
5
GND
6
IR
7
LED_B
8
LED_R
9
.
R1322
100
100
12PIN IR
R1321
100
100
12PIN IR
R1325
4.7K
12PIN IR
C1302
0.1uF
16V
12PIN IR
R1319
4.7K
R1320
4.7K
C1300
0.1uF
0.1uF
16V
R1313
OPT
R1315
OPT
R1312
OPT
R1314
OPT
R1305
100
100
C1301
1000pF
50V
R1302
10K
OPT
R1300
22
OPT
R1304
47K
OPT
R1303
47K
OPT
OPT
R1301
47K
OPT
OPT
P1301
TF05-51S
FHD_LVDS_WAFER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
P1300
FF10001-30
LVDS_HD_19~22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
P1302
FF10001-30
LVDS_HD_26~42
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R1378
3.3K
LVDS_SEL_PULLUP
R1372
510
OPC
P1303
12507WR-03L
19~22/26LH2000
1
KEY1
2
KEY2
3
GND
4
R1323
100
12PIN IR
R1306
10K
12PIN IR
LVA_CKP
LVB_CKP
LVB_CKM
LVB_0M
LVA_CKM
LVB_1P
LVA_3P
LVB_0P
LVA_0P
LVB_2P
LVA_2M
LVB_1M
LVA_0M
LVA_1M
LVA_2P
LVB_3P
LVA_1P
LVA_3M
LVB_2M
LVB_3M
R1612
0
EXCEPT_22LU50
R1613
0
EXCEPT_22LU50
P1306
FF10001-30
LVDS_MNT_HD_19~22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
11 11
MODULE&CTL
Module
CONTROL
IR & LED
close to wafer
Zener Diode is
V4 OPTION
OPC_OUTPUT
OPC_EABLE
External VBR
Small
X
8BIT
R1370
10BIT
X
R1371
0
R1378
HD
O
FHD
R1379
X
O
2009.03.25
EAX60686904
X
X
Block Diagram
Block Diagram
RGB
COMPONENT
F-SCART
AV3
BUF_TS_CLK/ERR/SYN/DATA[0]
AV_CVBS_IN
DDR2 SDRAM
(1Gb)
IC300
IC300
NAND Flash
HYNIX
IC102
USB
Digital amp
(NTP3100L)
IC701
COMP_Y/Pb/Pr
SC1_CVBS_IN
SC2_CVBS_IN
I2S
DSUB_ R/G/B
Tuner
(TDFW-G235D1)
TU1000
LCD Panel
- 19/22/26/32/37/42LH2000
- 32/37/42/47LH3000
- 32/37/42/47LH3000
- 32/37/42/47LH4000
74LVC541A
Buffer
IC502
CI Slot
(P500)
74LCX244
Buffer
IC501
PCM_A[0:7]
FE_VMAIN
PCM_A[0:7]
SDDR_D[0:15]
DDR2 SDRAM
(512Mb)
IC301
TDDR_D[0:15]
SDDR_A[0:12]
Mstar S6
LGE3368A
(No-DVIX)
(IC100)
MP6211DH
USB Power
IC402
USB Power
FE_TS_DATA[0:7]
CI_MDI[0:7]
H-SCART
SC1_R/G/B
SC1/2_L/R_IN,
FE_AM_AUDIO,AV_L/R_IN,
COMP_L/R_IN, PC_L/R_IN
FE_AM_AUDIO,AV_L/R_IN,
COMP_L/R_IN, PC_L/R_IN
FE_ VOUT
DTV/MNT_VOUT
TDDR_A[0:12]
TPA6110A
IC700
Head
Phone
RS-232C
MAX3232CDR
IC403
SPDIF
SPDIF_OUT
DSUB_H/VSYNC
HP_L/ROUT
L/R
CI_TS_DATA[0:7]
PCM_D[0:7]
CI_DATA[0:7]
CI_ADDR[0:7]
AUDIO IN
DGB_TX/RX
HPD1/2/3, HDMI_CEC
TMDS[0:7] ( Data, Clock (+/-))
USB_DM/DP
EEPROM
AT24C512
(IC105)
EEPROM
AT24C512
(HDCP)IC107
I2C
LVDS (10 bit)
Serial Flash
IC104
For Triton
Serial Flash
IC103
For Boot
KIA7027
(IC101)
Voltage Detector
74LX1G14C
(IC108)
Schmitt Trigger
Reset
5V_HDMI_1/2/3
HDMI
1/2/3
1/2/3
Block diagram
Main Block
37 GIP Block Diagram
37 GIP Block Diagram
TCON with FRC
MST7327N
IC101
M+S T-Con Block
SPI_CZ/CK & DI/DO
DDR_A_D[0:15]
DDR2 SDRAM
(512MB / 533MHz)
HYNIX
IC201
DDR_B_D[16:31]
DDR_A_A[0:12]
DDR_B_A[0:12]
Serial Flash
W25X32VSSIG
IC102
DDR2 SDRAM
(512MB / 533MHz)
HYNIX
IC202
Multi Channel
DC/DC Converter
TPS 65161
IC401
P-Gamma IC
BUF16821
IC402
VCC
VDD
VGH
VGL
VCC VDD
Level Shifter
MAX17108
IC403
GVST
GVDD_EVEN
GVDD_ODD
GCLK1~6
VGH
VGL
VGH
VDD
SOE
POL
Left mini-LVDS (8Bit)
Right mini-LVDS (8Bit)
LVDS (10Bit)
FRC IIC
FRC Reset
VCOM
GAMMA
FRC_3.3V
FRC_1.8V
FRC_1.26V
DC/DC Converter
BD9130
IC301
LDO
SC4215
IC303
FRC_1.8V
FRC_1.26V
FRC_3.3V
VCC
LVDS (10Bit)
From Main
Board
FRC IIC
FRC Reset
Panel 12V
To Left LCD Panel
To Right LCD Panel
VST
VDD_EVEN
VDD_ODD
CLK1~6
Shifted level
(HIGH=VGH/Low=VGL)
VCC
VDD
VGH
VGL
VST
VDD_EVEN
VDD_ODD
CLK1~6
SOE
POL
VCOM
GAMMA
VCC
VDD
VGH
VGL
VST
VDD_EVEN
VDD_ODD
CLK1~6
SOE
POL
VCOM
GAMMA
LVDS Wafer P 10 1
mini-LVDS Wafer P
40
1
Only for 37LH4000
Block diagram
*M+S : Main B/D + T-con B/D
In different
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