LG 42LT760H-TA (CHASSIS:LB3AF) Service Manual ▷ View online
0
R9030
10pF
50V
C9008
OPT
THERMAL
RTL8201FN
IC9000
1
MDI+[0]
2
MDI-[0]
3
NC_1
4
MDI+[1]
5
MDI-[1]
6
AVDD33_1
7
NC_2
8
NC_3
9
NC_4
10
NC_5
11
EN_LDO_OUT
12
TXER
13
RXDV
14
RXD[0]
15
DVDD33_1
16
RXD[1]
17
RXD[2]
18
RXD[3]/CLK_CTL
19
RXC
20
INTB
21
DVDD33_2
22
TXC
23
TXD[0]
24
TXD[1]
25
TXD[2]
26
TXD[3]
27
TXEN
28
DVDD10
29
PHYRSTB
30
MDC
31
MDIO
32
LED2/PHYAD[2]
33
PMEB
34
LED0/PHYAD[0]
35
LED1/PHYAD[1]
36
CRS/CRS_DV
37
DVDD33_3
38
COL
39
RXER/FXEN
40
DVDD10OUT
41
AVDD33_2
42
CKXTAL1
43
CKXTAL2
44
NC_6
45
NC_7
46
RSET
47
NC_8
48
AVDD10OUT
49
[EP]GND
0
R9013
0 . 1 u F
16V
C9001
0 . 1 u F
16V
C9012
LAN_AVDD33
0 . 1 u F
16V
C9011
MAGIC_WOL
0 . 1 u F
16V
C9002
LAN_AVDD33
ETHERNET_RESET
0 . 1 u F
16V
C9013
0 . 1 u F
16V
C9000
0 . 1 u F
16V
C9007
AO3407A
Q9000
G
D
S
ETHERNET_MDC
TR0P
PHY_STATE
LAN_AVDD33
0 . 1 u F
16V
16V
C9010
100K
R9008
TR1N
TR0N
ETHERNET_MDIO
TR1P
0 . 1 u F
16V
16V
C9004
0 . 1 u F
16V
16V
C9014
LAN_DVDD33
+3.5V_ST_LAN
BLM18PG121SN1D
L9000
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.
25.0MHz
X9000
2.49K
1%
R9009
0 . 1 u F
16V
C9006
0
R9014
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
+3.5V_ST
LAN_DVDD33
BLM18PG121SN1D
L9001
+3.5V_ST_LAN
4.7K
R9011
4.7K
R9026
4.7K
R9027
4.7K
R9032
4.7K
R9025
4.7K
R9038
4.7K
R9012
4.7K
R9001
0
R9024
470K
R9002
1M 1%
OPT
R9010
TP9000
WOL_ON
0
R9064
OPT
4.7K
OPT
R9067
15pF
50V
C9003
X t a l _ O l d
15pF
50V
C9005
X t a l _ O l d
ETHERNET_PWR_ON/OFF
10K
R9065
2SC3052
Q9003
E
B
C
12pF
50V
X t a l _ m a t c h i n g
C9005-*1
12pF
50V
C9003-*1
X t a l _ m a t c h i n g
100
R9068
10K
R9069
LAN1_DET
GXFULL
5 . 6 B
ZD9000
1K
R9070
MMBT3904(NXP)
Q9001
E
B
C
ETNHUB_DVDD33
LAN_LINK3
MMBT3904(NXP)
Q9002
E
B
C
100
R9071
1K
R9073
10K
R9072
5 . 6 B
ZD9001
ETNHUB_DVDD33
LAN2_DET
0 . 1 u F
C9015
30V
D9006
30V
D9010
ETNHUB_DVDD33
4 9 . 9
1%
1%
R9041
30V
D9000
BLM18PG121SN1D
L9002
ETNHUB_EPHY_RXIN0
510
R9043
43-10013AD11-1
JK9000
LED_LAN_OLD
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
30V
D9008
GXFULL
18pF
C9029
OPT
18pF
C9028
OPT
18pF
C9027
OPT
18pF
C9026
OPT
ETNHUB_EPHY_TXON0
ETNHUB_AVDD18
30V
D9002
1000pF
C9017
GYSPD
30V
D9004
1000pF
C9019
0 . 1 u F
C9021
0 . 1 u F
C9016
ETNHUB_EPHY_RXIP0
4 9 . 9
1%
1%
R9042
4 9 . 9
1%
1%
R9040
4 9 . 9
1%
1%
R9039
ETNHUB_EPHY_TXOP0
510
R9044
BLM18PG121SN1D
L9003
ETNHUB_EPHY_TXOP1
30V
D9007
0 . 1 u F
C9024
ETNHUB_EPHY_RXIN1
30V
D9011
0
R9063
43-10013AD11-1
JK9001
LED_LAN_OLD
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
ETNHUB_EPHY_TXON1
LAN_ACT3
30V
D9009
4 9 . 9
1%
1%
R9051
4 9 . 9
1%
1%
R9052
0 . 0 1 u F
C9022
4 9 . 9
1%
1%
R9053
1000pF
C9020
ETNHUB_AVDD18
0 . 1 u F
C9025
0 . 0 1 u F
C9023
OPT
1000pF
C9018
LAN_DVDD33
ETNHUB_EPHY_RXIP1
30V
D9005
4 9 . 9
1%
1%
R9054
LAN_LINK3
30V
D9003
510
R9046
510
R9045
30V
D9001
68pF
C9030
OPT
68pF
C9033
OPT
68pF
C9031
OPT
68pF
C9032
OPT
RJ45VT-01SLGY002
LAN_FOR EMI
JK9001-*1
1
2
3
4
5
6
7
8
L1
L2
L3
L4
13
RJ45VT-01SLGY002
LAN_FOR EMI
JK9000-*1
1
2
3
4
5
6
7
8
L1
L2
L3
L4
13
0
R9059
res_0ohm
0
R9060
res_0ohm
0
R9062
res_0ohm
0
R9061
res_0ohm
10
res_10ohm
R9061-*1
10
R9059-*1
res_10ohm
10
res_10ohm
R9060-*1
10
res_10ohm
R9062-*1
PHY ADDRESS CONFIG
MCU PORT TO BE ASSIGNED!!
2
1
0
TO MCU
CONFIG PHY_ADDRESS = 111
TO RJ45
T O S O C / M C U
P l a c e C l o s e d
E t h e r n e t P H Y
E t h e r n e t B l o c k
PHY chip for WOL
2 0 1 1 . 0 8 . 2 6
xxLT760H-UA
90
Low
TO SOC
High
Low
LAN1_DET
LAN1 Detect
GXFULL
High
A37
I n p u t
Not Connected
Connected
S t a t u s
MTK pin no
LAN1_DET
C35
LAN2_DET
LAN_LINK3
S t a t u s
LAN2_DET
I n p u t
High
Low
MTK pin no
Low
High
LAN2 Detect
Not Connected
Connected
TO SOC
LAN 1
EXT AUX RJ45
R J 4 5
P l z C h e c k O P T c o m p o n e n t ! !
LAN 2
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.
1/16W
1.2K
R9102
10uF
25V
25V
C9111
EXT_5V
1/16W
20K
1%
R9114
CB3216PA501E
L9101
22uF
25V
25V
C9106
NR8040T3R6N
3.6uH
L9104
22uF
16V
16V
C9103
12K
1%
R9116
CB3216PA501E
L9103
100
R9115
BLM18PG121SN1D
L9102
P_12V
1/8W
200K
1%
R9117
22uF
16V
16V
C9101
200
R9108
18K
R9100
470pF
50V
50V
C9105
EXT_PWR_DET
EXT_12V
MP5000DQ
IC9101
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
43
R9104
100K
R9105
THERMAL
MP4460DQ-LF-Z
IC9102
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
THERMAL
TPS54327DDAR
IC9103
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
APX803D29
IC9100
1
GND
3
VCC
2
RESET
100pF
C9112
EXT5V_CTRL
D9101
A2
C
A1
56K
1%
R9113
EXT_5V
0 . 1 u F
50V
C9104
100K
R9110
0 . 1 u F
50V
50V
C9110
11K
1%
R9112
0 . 1 u F
50V
C9107
P_12V
150K
R9107
EXT_12V
150pF
50V
50V
C9114
+24V
1K
R9101
0 . 1 u F
50V
50V
C9109
MBRA340T3G
D9100
22
R9111
22UH
L9100
10K
R9103
0 . 1 u F
50V
C9113
EXT12V_CTRL
0 . 1 u F
16V
16V
OPT
C9100
3 . 3 u F
50V
50V
C9102
1/16W
10K
1%
R9106
2.4K
R9109
P_12V
3300pF
50V
50V
C9115
1uF
10V
10V
C9108
1/16W
270K
1%
R9118
2 0 1 1 . 0 2 . 0 9
xxLT760H-UA
91
5V/12V Power Out
EXTERNAL_POWER OUT 5V/12V
c l o s e t o p i n
EXTERNAL_POWER DETECTION
$ 0 . 2 1
c l o s e I C 1 8 0 0
S w i t c h i n g n o i s e r e d u c i n g [ M P S r e c o m m e n d ]
Vout=(1+R1/R2)*0.765=5.03V
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.
1uF
25V
25V
OPT
C9203
10K
OPT
OPT
R9202
0 . 1 u F
C9204
P r o : i d i o m
+3.3V_PROIDIOM
100
OPT
R9205
27MHz
X9200
P r o : i d i o m
6
1
2
5
3
4
10uF
16V
16V
C9202
P r o : i d i o m
MLB-201209-0120P-N2
L9201
P r o : i d i o m
XMARK_1.8V
1N4148W
OPT
OPT
D9200
+3.3V_PROIDIOM
100uF
16V
16V
C9205
P r o : i d i o m
MLB-201209-0120P-N2
L9200
Pro:idiom
+3.3V_PROIDIOM
MAX809RTR
IC9200
P r o : i d i o m
1
GND
3
VCC
2
RESET
100
R9203
Pro:idiom
0 . 1 u F
16V
16V
C9201
P r o : i d i o m
+3.3V_PROIDIOM
22uF
16V
16V
C9208
P r o : i d i o m
+3.3V_PROIDIOM
47K
R9207
Pro:idiom
+3.3V_NORMAL
+3.3V_VCCINT
22
R9201
P r o : i d i o m
4.7K
R9200
Pro:idiom
0 . 1 u F
16V
16V
C9206
P r o : i d i o m
47K
R9206
Pro:idiom
/PROIDIOM_RESET_SOC
AZ1117H-1.8TRE1(EH13A)
IC9201
P r o : i d i o m
2
OUTPUT
3
INPUT
1
ADJ/GND
MLB-201209-0120P-N2
L9202
P r o : i d i o m
PROIDIOM_SYSCLK
R17
PROIDIOM_RESET
M16
+3.3V_PROIDIOM
GND
22uF
16V
16V
C9200
P r o : i d i o m
0.1uF
C9207
Pro:idiom
BLM18PG121SN1D
L9210
Pro:idiom
0.1uF
C9220
P r o : i d i o m
PROIDIOM_SYSCLK
C19
BLM18PG121SN1D
L9209
Pro:idiom
BLM18PG121SN1D
L9208
Pro:idiom
XMARK_1.8V
0.1uF
C9219
P r o : i d i o m
0.1uF
C9229
P r o : i d i o m
0.1uF
C9227
P r o : i d i o m
22
R9226
P r o : i d i o m
22
R9225
P r o : i d i o m
0
R9223
P r o : i d i o m
XMARK_1.8V
100K
OPT
R9211
0.1uF
C9223
P r o : i d i o m
0.1uF
C9221
P r o : i d i o m
0.1uF
C9224
P r o : i d i o m
XMARK_1.8V
0.1uF
C9226
P r o : i d i o m
0 . 1 u F
C9209
P r o : i d i o m
0.1uF
C9228
P r o : i d i o m
0.1uF
C9230
P r o : i d i o m
BLM18PG121SN1D
L9203
P r o : i d i o m
+3.3V_PROIDIOM
LGDT1001
IC9202
P r o : i d i o m H1
CLK1
B8
IO2_29/TP_SOP
B9
IO2_21/TP_VALID
B10
IO2_17/TP_ERR
C5
IO2_41/TP_DATA[7]
C6
IO2_36/TP_DATA[6]
C7
IO2_31/TP_DATA[5]
C8
IO2_25/TP_DATA[4]
C9
IO2_23/TP_DATA[3]
C10
IO2_18/TP_DATA[2]
C11
IO2_14/TP_DATA[1]
C12
IO2_8/TP_DATA[0]
M1
IO1_29
C3
IO1_2
C2
IO1_3
B1
IO1_4
G5
IO1_5
F4
IO1_6
D3
IO1_7
E4
IO1_8
F5
IO1_9
E3
IO1_10
D2
IO1_11
E2
IO1_12
G1
CLK0
B2
IO2_48/RESET
D14
IO3_37/I2C_SCK
E14
IO3_34/I2C_SDA
K4
DCLK
K13
CONF_DONE
H3
NCONFIG
J 4
NCE
H2
DATA0
G4
IO1_21SO
K3
IO1_22/ASDO
H4
NCEO
J 1 3
NSTATUS
J 3
MSEL0
J 2
MSEL1
J 1 4
TCK
H15
TDO
J 1 5
TMS
H14
TDI
D4
IO1_1/INIT_DONE
D1
IO1_13
F3
IO1_14
G3
IO1_15
F2
IO1_16
E1
IO1_17
G2
IO1_18
F1
IO1_19
H5
IO1_20
J 1
IO1_23
K2
IO1_24
L3
IO1_25
K1
IO1_26
L1
IO1_27
L2
IO1_28
N1
IO1_30
M2
IO1_31
N2
IO1_32
M3
IO1_33
L5
IO1_34
M4
IO1_35
N3
IO1_36
K5
IO1_37
L4
IO1_38
R1
IO1_39
P2
IO1_40
P3
IO1_41
N4
IO1_42
R2
IO4_1
T2
IO4_2
R3
IO4_3
P4
IO4_4
R4
IO4_5
T4
IO4_6
R5
IO4_7
M5
IO4_9
M6
IO4_10
N5
IO4_11
N6
IO4_12
R6
IO4_14
M7
IO4_15
T6
IO4_16
R7
IO4_17
N7
IO4_19
T8
IO4_21
M8
IO4_22
N8
IO4_23
M10
IO4_25
T9
IO4_27
N9
IO4_29
T11
IO4_31
N10
IO4_32
N11
IO4_36
N12
IO4_37
M9
IO4_38
M11
IO4_39
M12
IO4_40
R12
IO4_42
T13
IO4_43
R13
IO4_44
R14
IO4_45
P13
IO4_46
T15
IO4_47
R15
IO4_48
N13
IO3_1
P14
IO3_2
P15
IO3_3
R16
IO3_4
N15
IO3_5
N16
IO3_6
K12
IO3_7
K14
IO3_8
L12
IO3_9
N14
IO3_10
M13
IO3_11
M14
IO3_12
L13
IO3_13
M15
IO3_14
M16
IO3_15
L14
IO3_16
L15
IO3_17
L16
IO3_18
K16
IO3_19
K15
IO3_20
J16
IO3_21
H16
CLK3
G16
CLK2
H12
IO3_22
G14
IO3_23
G13
IO3_24
G15
IO3_25
F16
IO3_26
F14
IO3_27
F13
IO3_28
F15
IO3_29
E16
IO3_30
E15
IO3_31
D16
IO3_32
D15
IO3_33
F12
IO3_35
E13
IO3_36
H13
IO3_38
G12
IO3_39
B16
IO3_40
C15
IO3_41
C14
IO3_42
D13
IO3_43
B15
IO2_1
A15
IO2_2
B14
IO2_3
C13
IO2_4
B13
IO2_5
A13
IO2_6
B12
IO2_7
A2
IO2_47
E12
IO2_9
E11
IO2_10
E9
IO2_11
D12
IO2_12
D11
IO2_13
B3
IO2_46
B11
IO2_15
A11
IO2_16
D10
IO2_19
A9
IO2_20
D9
IO2_22
C4
IO2_45
E10
IO2_24
B4
IO2_44
D8
IO2_26
E8
IO2_27
A8
IO2_28
D7
IO2_30
A4
IO2_43
B7
IO2_32
A6
IO2_33
E7
IO2_34
P12
IO4_41/CH_DATA[7]
P11
IO4_35/CH_DATA[6]
P10
IO4_33/CH_DATA[5]
P9
IO4_28/CH-DATA[4]
P8
IO4_24/CH_DATA[3]
P7
IO4_18/CH_DATA[2]
P6
IO4_13/CH_DATA[1]
P5
IO4_8/CH_DATA[0]
R10
IO4_30/CH_ERR
R9
IO4_26/CH_SOP
R8
IO4_20/CH_VALID
R11
IO4_34/CH_CLK
A7
VCCINT_1
A10
VCCINT_2
G8
VCCINT_3
G10
VCCINT_4
H7
VCCINT_5
H9
VCCINT_6
J8
VCCINT_7
J10
VCCINT_8
K7
VCCINT_9
K9
VCCINT_10
T7
VCCINT_11
T10
VCCINT_12
C1
VCCIO1_1
G6
VCCIO1_2
P1
VCCIO1_3
T3
VCCIO4_1
L7
VCCIO4_2
L10
VCCIO4_3
T14
VCCIO4_4
P16
VCCIO3_1
K11
VCCIO3_2
C16
VCCIO3_3
A14
VCCIO2_1
F10
VCCIO2_2
F7
VCCIO2_3
A3
VCCIO2_4
A1
GND_1
A16
GND_2
A5
GND_3
A12
GND_4
F6
GND_5
F8
GND_6
F9
GND_7
F11
GND_8
G7
GND_9
G9
GND_10
G11
GND_11
H8
GND_12
H10
GND_13
J7
GND_14
J9
GND_15
K6
GND_16
K8
GND_17
K10
GND_18
L6
GND_19
L8
GND_20
L9
GND_21
L11
GND_22
T1
GND_23
T5
GND_24
T12
GND_25
T16
GND_26
J6
GNDA_PLL1
J5
GNDG_PLL1
J11
GNDA_PLL2
J12
GNDG_PLL2
H6
VCCA_PLL1
H11
VCCA_PLL2
B6
IO2_35
B5
IO2_42
D6
IO2_37
D5
IO2_38
E6
IO2_39
E5
IO2_40
0.1uF
C9231
P r o : i d i o m
+3.3V_VCCINT
22
R9224
P r o : i d i o m
0.1uF
C9225
P r o : i d i o m
BLM18PG121SN1D
L9207
Pro:idiom
4 . 7 u F
C9210
P r o : i d i o m
BLM18PG121SN1D
L9211
Pro:idiom
XMARK_1.8V
I2C_SCL3
PROIDIOM_RESET
C9
TS_S_IN_0_VAL
TS_S_IN_0_SYNC
TS_S_IN_0_CLK
TS_S_IN_0_DATA
I2C_SDA3
I2C_SCL2
I2C_SDA2
22 OPT
R9255
22 OPT
R9254
+3.3V_PROIDIOM
+3.3V_PROIDIOM
0 . 1 u F
C9232
Pro:idiom
0 . 1 u F
C9233
Pro:idiom
0 . 1 u F
C9234
Pro:idiom
0 . 1 u F
C9235
Pro:idiom
0.1uF
C9236
P r o : i d i o m
0.1uF
C9237
P r o : i d i o m
0 . 1 u F
C9238
Pro:idiom
0 . 1 u F
C9239
Pro:idiom
0 . 1 u F
C9240
Pro:idiom
0 . 1 u F
C9241
Pro:idiom
0 . 1 u F
C9242
Pro:idiom
0 . 1 u F
C9243
Pro:idiom
0
R9216
Pro:idiom
4.7K
R9256
P r o : i d i o m
4.7K
R9258
P r o : i d i o m
4.7K
R9257
P r o : i d i o m
4.7K
R9259
P r o : i d i o m
4.7K
R9260
P r o : i d i o m
0.1uF
C9244
P r o : i d i o m
0.1uF
C9245
P r o : i d i o m
TS_S_OUT_VAL
TS_S_OUT_DATA
TS_S_OUT_SYNC
TS_S_OUT_CLK
74LVC1G08GW
IC9203
P r o : i d i o m
3
2
4
1
5
0
OPT
R9261
+3.3V_PROIDIOM
0.1uF
C9250
Pro:idiom
0
R9262
Pro:idiom
0
R9264
Pro:idiom
74LVC1G08GW
IC9204
P r o : i d i o m
3
2
4
1
5
0
R9270
P r o : i d i o m
0.1uF
C9251
Pro:idiom
+3.3V_PROIDIOM
0
OPT
R9273
0
R9217
Pro:idiom
0
R9218
Pro:idiom
0
R9219
Pro:idiom
0
R9220
Pro:idiom
0
R9272
P r o : i d i o m
22
R9266
Pro:idiom
22
R9271
P r o : i d i o m
1uF
1
0
V
C9222
P r o : i d i o m
LG1001 Use XMARK
LGDT1129 Not use XMARK
2 7 M H z ( 2 0 0 p p m )
Power
XMARK_1.8V
RESET
Pro:Idiom (XMARK)
I 2 C : 0 x 4 7
C l o s e t o I C
To SOC
From SOC
2 0 1 1 . 0 2 . 0 9
xxLT760H-UA
92
P r o : I d i o m
C a p c l o s e t o I C
Cap close to IC
O n l y I n n e r L a y e r ( G N D ) r o u t i n g