LG 42LP860H (CHASSIS:LD33B) 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.
C8612
1uF
50V
1uF
50V
EXT_SPK_LOUT_MAIN
L8603
22.0uH
C8615
0.47uF
50V
0.47uF
50V
C8618
100pF
50V
OPT
EXT_SPK_ROUT_MAIN
MAIN_AMP_RESET
EXT_SPK_DET
C8602
1uF
50V
Q8600
MMBT3904(NXP)
MMBT3904(NXP)
OPT
E
B
C
EXT_OUT_R
L8600
BLM18PG121SN1D
R8600
100
100
EXT_SPK_MUTE
R8606
10K
10K
OPT
EXT_OUT_R
C8614
0.47uF
50V
0.47uF
50V
+3.5V_ST
R8604
10K
10K
OPT
C8603
1uF
50V
50V
C8608
0.22uF
50V
0.22uF
50V
C8601
1uF
10V
10V
C8600
1uF
10V
10V
R8603
100
100
C8607
0.22uF
50V
0.22uF
50V
R8605
10K
10K
L8602
22.0uH
22.0uH
C8613
1uF
50V
1uF
50V
IC8600
TPA3124D2PWPR
3
PVCCL_2
2
SD
4
MUTE
1
PVCCL_1
6
RIN
5
LIN
7
BYPASS
8
AGND_1
9
AGND_2
10
PVCCR_1
11
VCLAMP
12
PVCCR_2
13
PGNDR_1
14
PGNDR_2
15
ROUT
16
BSR
17
GAIN1
18
GAIN0
19
AVCC_1
20
AVCC_2
21
BSL
22
LOUT
23
PGNDL_1
24
PGNDL_2
R8601
10K
10K
OPT
EXT_OUT_L
C8619
100pF
50V
50V
OPT
R8607
10K
10K
EXT_OUT_L
R8608
4.7K
4.7K
R8609
4.7K
4.7K
+3.3V_NORMAL
R8602
10K
10K
JK8600
PEJ027-04
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
R8611
470K
OPT
R8614
470K
OPT
R8613
1K
R8612
15K
+24V_AMP
C8609
0.1uF
50V
0.1uF
50V
C8610
4.7uF
50V
50V
C8605
0.1uF
50V
C8616
100uF
100uF
25V
C8617
100uF
100uF
25V
C8604
4.7uF
50V
C8606
0.1uF
50V
L8604
BLM18PG121SN1D
2012.12.10
xxLP860H-ZA
86
EXT_SPK
EXT_SPEAKER_AMP
Connected
High
EXT_SPK_DET
Disconnected
Low
EXT_SPK OUT(Single End)
T
H
E
R
M
A
L
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.
Q8709
2SC3875S(ALY)
E
B
C
TOOL0
R8710
4.7K
IR_OUT_CTRL
R87001
4.7K
IC8703
KID65003AF
3
I3
2
I2
4
I4
1
I1
6
I6
5
I5
7
I7
8
GND
9
COMMON
10
O7
11
O6
12
O5
13
O4
14
O3
15
O2
16
O1
FLMD0
Q8704
2SA1504S
E
B
C
C8708
0.1uF
0.1uF
R8745
10K
10K
OPT
5V_ON/OFF
LED_R
+3.5V_ST
POWER_DET
+5V_ST
MICOM_RESET
R87003
4.7K
HDMI_CEC
C8710
13pF
+5V_ST
SW8700
JTP-1127WEM
1
2
4
3
P8701
12507WS-06L
1
2
3
4
5
6
7
R8787
10K
Q8710
2SC3875S(ALY)
E
B
C
R8772
22
R8771
22
R8785
100K
MAIN_AMP_MUTE
POWER_ON/OFF2_2
UART_SW2
TOOL1
R8717
4.7K
ETHERNET_MDIO
CLOCK_SCL
FLMD0
KEY1
EXT12V_CTRL
C8711
13pF
+3.5V_ST
+3.5V_ST
SOC_RESET
R8784
22
R8716
4.7K
NEC_TX3
TOOL1
Q8707
2SC3875S(ALY)
E
B
C
Q8705
2SA1504S
E
B
C
MICOM_RESET
NEC_DBG_TXD
NEC_EEPROM_SDA
R8754
10K
OPT
EXT_SPK_MUTE
R8757
22
+3.5V_ST
Q8703
2SA1504S
E
B
C
MAIN_AMP_RESET
L8700
CB3216PA501E
EXT5V_CTRL
R8790
10K
10K
KEY2
R8788
10K
10K
R8786
1M
1M
TOOL0
NEC_DBG_RXD
R8756
22
Q8702
2SA1504S
E
B
C
NEC_EEPROM_SCL
X8701
10MHz
+3.5V_ST
WARM_MODE
R8799
4.7K
R8764
22
INV_CTL
R8791
10K
10K
ETHERNET_RESET
Q8708
2SC3875S(ALY)
E
B
C
R8783
47K
47K
+3.5V_ST
NEC_RX3
UART_DBG_SW
R8755
22
R8709
4.7K
C8712
0.1uF
R87005
4.7K
Q8706
2SC3875S(ALY)
E
B
C
Q8701
2SA1504S
E
B
C
IR
C8713
0.1uF
ETNHUB_ENDEFER
SCART_MUTE
C8709
0.1uF
16V
0.1uF
16V
+3.5V_ST
POWER_ON/OFF1
R8797
4.7K
CLOCK_SDA
DBG_SW
RL_ON
NEC_RX0
EXT_PWR_DET
POWER_ON/OFF2_1
+3.5V_ST
PANEL_CTL
R8789
10K
10K
MAGIC_WOL
BU8700
PKLCS1212E4001-R1
1
2
IC8705
74LX1G14CTR
BUZZER_INVERTER
3
GND
2
1A
4
1Y
1
NC
5
VCC
C8714
0.1uF
16V
0.1uF
16V
BUZZER_INVERTER
EEPROM_SW
UART_SW1
POWER_ON/OFF2_3
POWER_ON/OFF2_4
ETHERNET_MDC
EXT_SPK_DET
R8766
22
R8767
22
+3.5V_ST
ETNHUB_INT
PHY_STATE
+3.5V_ST
R8714
10K
OPT
R8715
10K
R8735
10K
OPT
R8779
10K
OPT
R8780
10K
NON_CLOCK
R8781
10K
CLOCK
R8782
10K
OPT
R8701
10K
OPT
MODEL1_OPT_0
MODEL1_OPT_1
MODEL1_OPT_2
ETNHUB_PWR_ON/OFF
C8715
2.2uF
10V
10V
BA8700
BATTERY
CLOCK
1
2
CLOCK_SDA
CLOCK_SCL
C8703
0.1uF
16V
0.1uF
16V
CLOCK
R8706
1K
1K
CLOCK
+3.5V_ST
IC8702
M41T83RMY6F
CLOCK
3
NF_2
2
NF_1
4
NC_2
1
NC_1
6
DU
5
RST
7
SQW
8
VBAT
9
VSS
10
SDA
11
SCL
12
IRQ1/FT/OUT
13
NC_3
14
IRQ2
15
VCC
16
NF_3
17
NV_4
18
NC_4
+3.5V_ST
IC8700
NEC_MICOM
1
P60/SCL0
2
P61/SDA0
3
P62
4
P63
5
P31/TI03/TO03/INTP4
6
P64/RD
7
P65/WR0
8
P66/WR1
9
P67/ASTB
10
P77/EX23/KR7/INTP11
11
P76/EX22/KR6/INTP10
12
P75/EX21/KR5/INTP9
13
P74/EX20/KR4/INTP8
14
P73/EX19/KR3
15
P72/EX18/KR2
16
P71/EX17/KR1
17
P70/EX16/KR0
18
P06/WAIT
19
P05/CLKOUT
20
EVSS1
21
P80/EX0
22
P81/EX1
23
P82/EX2
24
P83/EX3
25
P84/EX4
26
P85/EX5
27
P86/EX6
28
P87/EX7
29
P30/INTP3/RTC1HZ
30
EVDD1
31
P50/EX8
32
P51/EX9
33
P52/EX10
34
P53/EX11
35
P54/EX12
36
P55/EX13
37
P56/EX14
38
P57/EX15
39
P17/EX31/TI02/TO02
40
P16/EX30/TI01/TO01/INTP5
41
P15/EX29/RTCDIV/RTCCL
42
P14/EX28/RXD3
43
P13/EX27/TXD3
44
P12/EX26/SO00/TXD0
45
P11/EX25/SI00/RXD0
46
P10/EX24/SCK00
47
AVREF1
48
P110/ANO0
49
P111/ANO1
50
AVREF0
51
AVSS
52
P157/ANI15
53
P156/ANI14
54
P155/ANI13
55
P154/ANI12
56
P153/ANI11
57
P152/ANI10
58
P151/ANI9
59
P150/ANI8
60
P27/ANI7
61
P26/ANI6
62
P25/ANI5
63
P24/ANI4
64
P23/ANI3
65
P22/ANI2
66
P21/ANI1
67
P20/ANI0
68
P130
69
P131/TI06/TO06
70
P04/SCK10/SCL10
71
P03/SI10/RXD1/SDA10
72
P02/SO10/TXD1
73
P01/TO00
74
P00/TI00
75
P145/TI07/TO07
76
P144/SO20/TXD2
77
P143/SI20/RXD2/SDA20
78
P142/SCK20/SCL20
79
P141/PCLBUZ1/INTP7
80
P140/PCLBUZ0/INTP6
81
P120/INTP0/EXLVI
82
P47/INTP2
83
P46/INTP1/TI05/TO05
84
P45/SO01
85
P44/SI01
86
P43/SCK01
87
P42/TI04/TO04
88
P41/TOOL1
89
P40/TOOL0
90
RESET
91
P124/XT2
92
P123/XT1
93
FLMD0
94
P122/X2/EXCLK
95
P121/X1
96
REGC
97
VSS
98
EVSS0
99
VDD
100
EVDD0
UART_SW3
NEC_TX0
R8758
22
SIDE_HP_MUTE
5V_ON/OFF
C8706
0.1uF
0.1uF
16V
C8705
1uF
10V
1uF
10V
C8702
0.1uF
16V
0.1uF
16V
OPT
L8701
3.6uH
R8705
10K
10K
C8704
10uF
10V
10uF
10V
C8717
1uF
16V
1uF
16V
OPT
IC8701
TPS61087DRC
3
EN
2
FB
4
AGND
1
COMP
5
PGND
6
SW_1
7
SW_2
8
IN
9
FREQ
10
SS
11
[EP]AGND
+3.5V_ST
R8703
51K
1%
C8716
100pF
50V
100pF
50V
OPT
C8707
2700pF
50V
R8700
18K
1%
R8704
3.3K
1%
C8718
22uF
16V
22uF
16V
D8701
40V
SMAB34
+5V_ST
R8702
16K
R87014
22
R87015
22
CLK_DATA7
CLK_DATA4
CLK_DATA1
CLK_COM3
CLK_DATA5
CLK_DATA2
CLK_COM4
CLK_COM1
CLK_DATA6
CLK_DATA3
CLK_COM5
CLK_COM2
WIFI_EN
WOL/WIFI_POWER_ON
AMP_EN
R8707
100
MODEL1_OPT_1
MODEL1_OPT_0
MODEL1_OPT_2
LOGO_LIGHT
LAN1_LINK
LAN2_LINK
R8746
22
R8765
22
OPT
R8763
22
OPT
R8798
1K
R8794
22
BUZZER_Non_Inverter
CLOCK_DET
R8792
100
R8793
100
2012.12.10
xxLP860H-ZA
87
NEC Micom
Closed to Crystal
OPT
MODEL_OPT_1
OPT
MODEL_OPT_0
OPT
79
OPT
MODEL_OPT_2
80
LOW
78
HIGH
PIN NO.
NON_CLOCK
CLOCK
PIN NAME
MICOM MODEL OPTION
REAL TIME CLOCK(RTC)
R1
R2
Step Up regulator from 3.5V to 5V
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.
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.
LAN_ACT3
X9000
25.0MHz
PHY_STATE
ETHERNET_MDC
LAN_DVDD33
L9003
BLM18PG121SN1D
R9069
10K
R9010
1M
1%
OPT
R9071
100
IC9000
RTL8201FN
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
C9010
0.1uF
16V
0.1uF
16V
R9043
510
LAN_AVDD33
LAN2_LINK
R9068
100
R9040
49.9
1%
49.9
1%
C9008
10pF
50V
OPT
ETNHUB_EPHY_RXIN1
C9017
1000pF
C9012
0.1uF
0.1uF
16V
R9072
10K
ETNHUB_AVDD18
C9019
1000pF
ETNHUB_DVDD33
ETNHUB_EPHY_TXOP1
C9018
1000pF
ETNHUB_EPHY_TXOP3
R9065
10K
LAN2_DET
TR1P
C9020
1000pF
C9001
0.1uF
0.1uF
16V
LAN2_LINK
ETNHUB_PWR_ON/OFF
JK9001
RJ45VT-01SLGY002
LED_LAN
1
2
3
4
5
6
7
8
L1
L2
L3
L4
13
C9016
0.1uF
LAN_DVDD33
MAGIC_WOL
R9011
4.7K
R9042
49.9
1%
49.9
1%
LAN_DVDD33
TP9000
C9011
0.1uF
16V
R9026
4.7K
LAN_AVDD33
ETNHUB_EPHY_TXON3
ETNHUB_EPHY_TXON1
R9041
49.9
1%
49.9
1%
+3.5V_ST_LAN
R9027
4.7K
LAN_DVDD33
L9001
BLM18PG121SN1D
R9032
4.7K
R9046
510
LAN1_LINK
C9013
0.1uF
0.1uF
16V
LAN_AVDD33
R9025
4.7K
TR0P
LAN1_DET
LAN_DVDD33
ETNHUB_AVDD18
C9024
0.1uF
ETNHUB_EPHY_RXIN3
R9038
4.7K
C9007
0.1uF
0.1uF
16V
R9067
4.7K
OPT
R9051
49.9
1%
49.9
1%
ETNHUB_DVDD33
C9004
0.1uF
16V
0.1uF
16V
C9021
0.1uF
0.1uF
16V
C9014
0.1uF
16V
0.1uF
16V
+3.5V_ST_LAN
C9000
0.1uF
0.1uF
16V
R9052
49.9
1%
49.9
1%
R9012
4.7K
Q9001
MMBT3904(NXP)
E
B
C
R9053
49.9
1%
49.9
1%
C9002
0.1uF
16V
C9015
0.1uF
R9039
49.9
1%
49.9
1%
ETNHUB_EPHY_RXIP3
Q9003
2SC3052
2SC3052
E
B
C
C9003
12pF
50V
Xtal_matching
C9003-*1
15pF
50V
Xtal_Old
LAN_DVDD33
L9002
BLM18PG121SN1D
C9025
0.1uF
0.1uF
L9000
BLM18PG121SN1D
R9044
510
Q9002
MMBT3904(NXP)
E
B
C
JK9000
RJ45VT-01SLGY002
LED_LAN
1
2
3
4
5
6
7
8
L1
L2
L3
L4
13
TR1N
R9001 4.7K
ETNHUB_DVDD33
R9045
510
C9005-*1
15pF
50V
Xtal_Old
C9005
12pF
50V
Xtal_matching
R9054
49.9
1%
49.9
1%
LAN_DVDD33
R9013
100
ETHERNET_MDIO
LAN1_LINK
LAN_DVDD33
LAN_DVDD33
ETNHUB_EPHY_RXIP1
R9009
2.49K
2.49K
1%
ETHERNET_RESET
C9006
0.1uF
0.1uF
16V
+3.5V_ST
GYSPD
TR0N
JK9001-*1
BS-R430061
NON_LED_LAN
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
JK9000-*1
BS-R430061
NON_LED_LAN
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
R9030
22
R9002
10K
R9008
1K
Q9000
AO3407A
G
D
S
D9005
5.6V
LAN_DIODE
D9007
5.6V
LAN_DIODE
D9009
5.6V
LAN_DIODE
D9011
5.6V
LAN_DIODE
C9022
0.1uF
0.1uF
16V
D9004
5.6V
LAN_DIODE
D9006
5.6V
LAN_DIODE
D9008
5.6V
LAN_DIODE
D9010
5.6V
LAN_DIODE
R9073
10K
R9070
10K
D9000
5.6V
LAN_DIODE
D9002
5.6V
LAN_DIODE
D9001
5.6V
LAN_DIODE
D9003
5.6V
LAN_DIODE
Ethernet PHY/RJ45
2012.12.10
xxLP860H-ZA
90
Disconnected
TO Soc
Status
Place Closed
LAN2_DET
Low
G37
Connected
Low
MTK pin no
Low
LAN 2
LAN 1
Disconnected
Input
Low
(AUX LAN)
PHY ADDRESS CONFIG
Connected
Input
High
High
2
G36
Ethernet PHY(RTL8201FN)/RJ45
LAN1_LINK
1
Status
0
High
LAN2_DET
LAN1 Detect
TO MCU
LAN1_DET
CONFIG PHY_ADDRESS = 111
MCU PORT TO BE ASSIGNED!!
MTK pin no
LAN2 Detect
LAN2_LINK
TO Soc
TO RJ45
High
From MICOM
TO SOC/ MCU
LAN1_DET
From MICOM
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.
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.
R9105
100K
100K
C9100
0.1uF
16V
OPT
0.1uF
16V
OPT
R9101
1K
1K
R9103
10K
10K
P_12V
EXT_PWR_DET
R9109
2.4K
2.4K
R9102
1.2K
1/16W
1.2K
1/16W
C9103
22uF
16V
22uF
16V
EXT_12V
R9115
100
100
EXT_12V
R9112
11K
11K
1%
EXT_5V
C9101
22uF
16V
22uF
16V
D9101
A2
C
A1
R9116
12K
1%
R9113
56K
56K
1%
R9104
43
43
IC9100
APX803D29
1
GND
3
VCC
2
RESET
L9101
CB3216PA501E
IC9103
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
EXT12V_CTRL
L9104
3.6uH
3.6uH
NR8040T3R6N
C9109
0.1uF
50V
50V
C9108
1uF
10V
1uF
10V
C9111
10uF
25V
10uF
25V
IC9101
MP5000DQ
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
EXT_5V
C9112
100pF
L9102
BLM18PG121SN1D
C9105
470pF
50V
470pF
50V
P_12V
C9107
0.1uF
0.1uF
50V
R9108
200
C9115
3300pF
50V
3300pF
50V
EXT5V_CTRL
+12V
P_12V
L9103
CB3216PA501E
C9113
0.1uF
50V
OPT
C9114
22uF
25V
22uF
25V
OPT
C9116
0.1uF
50V
OPT
2012.12.10
xxLP860H-ZA
91
5V/12V EXT.Power Out
EXTERNAL_POWER OUT 5V/12V
EXTERNAL_POWER DETECTION
close IC1800
Vout=(1+R1/R2)*0.765=5.03V
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