Read LG 42LH70YD (CHASSIS:LJ91D) 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.
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.
BCM3556 AUD_IN/LVDS
2008.10.15
BCM (BRAZIL VENUS)
54MHz_XTAL_N
54MHz_XTAL_P
C212
4.7uF
L202
BLM18PG121SN1D
C213
0.01uF
0.01uF
A3.3V
A2.5V
C219
0.1uF
C214
0.1uF
R220
560
A1.2V
C215
0.1uF
C223
0.1uF
JP201
D3.3V
C200
4.7uF
R201
1.5K
JP202
JP200
R200
1.5K
JP203
USB_DM2
L200
BLM18PG121SN1D
A2.5V
C
2
0
9
0
.
1
u
F
R209
3.9K
3.9K
C208
4.7uF
C201
100pF
100pF
R210
120
120
USB_DM1
A1.2V
C
2
0
7
0
.
1
u
F
C
2
0
3
0
.
1
u
F
C
2
0
2
0
.
1
u
F
USB_DP1
A3.3V
USB_DP2
A1.2V
R218
240
240
A2.5V
R219
1K
C222
0.1uF
0.1uF
A2.5V
C217
10uF
C2000
4.7uF
C228
10uF
OPT
C
2
9
5
0
.
1
u
F
A2.5V
C242
4.7uF
A1.2V
C
2
3
6
0
.
1
u
F
C
2
3
9
0
.
1
u
F
A1.2V
C
2
0
0
1
0
.
1
u
F
54MHz_XTAL_P
I2
C
2
0
0
2
0
.
1
u
F
54MHz_XTAL_N
I2
A2.5V
A1.2V
L203
BLM18PG121SN1D
C235
4.7uF
4.7uF
C233
0.1uF
D3.3V
A2.5V
D3.3V
C234
0.1uF
SYS_RESETb
9:B7
C231
10uF
L204
BLM18PG121SN1D
A1.2V
C241
4.7uF
C240
4.7uF
A1.2V
L207
BLM18PG121SN1D
C
2
3
7
0
.
1
u
F
R222
1K
R223
1K
R221
4.7K
L201
BLM18PG121SN1D
LVDS_TX_0_DATA3_P
7:E7
LVDS_TX_0_DATA0_P
7:E7
LVDS_TX_1_DATA3_N
7:D7
LVDS_TX_1_DATA1_P
7:D7
LVDS_TX_0_DATA1_N
7:E7
LVDS_TX_0_DATA1_P
7:E7
LVDS_TX_1_CLK_P
7:D7
LVDS_TX_0_DATA2_N
7:E7
LVDS_TX_1_CLK_N
7:D7
LVDS_TX_0_DATA4_P
7:E7
LVDS_TX_1_DATA4_P
7:D7
LVDS_TX_0_DATA2_P
7:E7
LVDS_TX_1_DATA3_P
7:D7
LVDS_TX_0_CLK_N
7:E7
LVDS_TX_0_DATA4_N
7:E7
LVDS_TX_0_CLK_P
7:E7
LVDS_TX_1_DATA4_N
7:D7
LVDS_TX_1_DATA1_N
7:D7
LVDS_TX_0_DATA3_N
7:E7
LVDS_TX_1_DATA0_N
7:D7
LVDS_TX_1_DATA0_P
7:D7
LVDS_TX_1_DATA2_P
7:D7
LVDS_TX_1_DATA2_N
7:D7
LVDS_TX_0_DATA0_N
7:E7
R204
51
COMP2_INCM
14:A5
C274
0.047uF
C273
0.047uF
AV1_INCM
14:A5
COMP1_L_IN
14:A6
R233
51
C279
0.047uF
C298
0.047uF
R231
51
AV1_L_IN
14:A5
C2007
0.047uF
C2008
0.047uF
C277
0.047uF
R230
51
R234
51
R229
51
R232
51
C296
0.047uF
R214
51
COMP1_R_IN
14:A6
COMP1_INCM
14:A6
SPK_P
14:D5
C2009
0.047uF
AV1_R_IN
14:A5
C260
0.047uF
SIDE_L_IN
14:A4
C2010
0.047uF
COMP2_L_IN
14:A5
R228
51
C204
0.015uF
OPT
PC_INCM
14:A3
SIDE_R_IN
14:A4
PC_R_IN
14:A3
SIDE_INCM
14:A4
C299
0.047uF
COMP2_R_IN
14:A5
PC_L_IN
14:A3
SPK_INCM
14:F4
R215
51
C
2
3
8
0
.
1
u
F
USB_CTL1
USB_OCD1
D3.3V
R235
2.7K
TU_SCLK
TU_SYNC
TU_SDATA
C211
0.015uF
C220
0.015uF
C206
0.015uF
C210
0.015uF
C225
0.015uF
C221
0.015uF
C224
0.015uF
C227
0.015uF
C226
0.015uF
R203 51
R202
51
OPT
P200
TJC2508-4A
1
2
3
4
JP204
JP205
JP206
JP208
JP209
JP207
R237
0
R236
0
A1.2V
R240
390
OPT
OPT
R241
0
OPT
R242
0
OPT
R226
4.7K
R225
4.7K
OPT
R227
4.7K
R224
4.7K
OPT
C205
0.015uF
R3027
604
L8014
1008LS-272XJLC
C3012
33pF
C232
0.015uF
IC100
BCM3556
PKT0_CLK
D23
PKT0_DATA
C24
PKT0_SYNC
B26
RMX0_CLK
A25
RMX0_DATA
B25
RMX0_SYNC
A26
POD2CHIP_MCLKI
G23
POD2CHIP_MDI0
D25
POD2CHIP_MDI1
D24
POD2CHIP_MDI2
C25
POD2CHIP_MDI3
E27
POD2CHIP_MDI4
E26
POD2CHIP_MDI5
D28
POD2CHIP_MDI6
D27
POD2CHIP_MDI7
D26
POD2CHIP_MISTRT
E23
POD2CHIP_MIVAL
E24
CHIP2POD_MCLKO
F25
CHIP2POD_MDO0
C27
CHIP2POD_MDO1
C26
CHIP2POD_MDO2
B28
CHIP2POD_MDO3
B27
CHIP2POD_MDO4
A27
CHIP2POD_MDO5
F24
CHIP2POD_MDO6
F23
CHIP2POD_MDO7
E25
CHIP2POD_MOSTRT
C28
CHIP2POD_MOVAL
A28
VDAC_AVDD2P5
AC18
VDAC_AVDD1P2
AF20
VDAC_AVDD3P3_1
AG20
VDAC_AVDD3P3_2
AG21
VDAC_AVSS_1
AF19
VDAC_AVSS_2
AD20
VDAC_AVSS_3
AE20
VDAC_RBIAS
AH22
VDAC_1
AH20
VDAC_2
AG19
VDAC_VREG
AH21
BSC_S_SCL
M25
BSC_S_SDA
M24
USB_AVSS_1
R6
USB_AVSS_2
T6
USB_AVSS_3
R7
USB_AVSS_4
T7
USB_AVSS_5
T8
USB_AVDD1P2
R3
USB_AVDD1P2PLL
U3
USB_AVDD2P5
T4
USB_AVDD2P5REF
T3
USB_AVDD3P3
R4
USB_RREF
U4
USB_DM1
V1
USB_DP1
V2
USB_DM2
U1
USB_DP2
U2
USB_MONCDR
T5
USB_MONPLL
R5
USB_PWRFLT_1
R1
USB_PWRFLT_2
R2
USB_PWRON_1
T2
USB_PWRON_2
T1
EPHY_VREF
P6
EPHY_RDAC
P5
EPHY_RDN
P3
EPHY_RDP
P2
EPHY_TDN
N3
EPHY_TDP
N2
EPHY_AVDD1P2
P1
EPHY_AVDD2P5
P4
EPHY_PLL_VDD1P2
N4
EPHY_AGND_1
N1
EPHY_AGND_2
N5
EPHY_AGND_3
P7
AUDMX_LEFT1
AE6
AUDMX_RIGHT1
AD7
AUDMX_INCM1
AF6
AUDMX_LEFT2
AH4
AUDMX_RIGHT2
AG5
AUDMX_INCM2
AG4
AUDMX_LEFT3
AG6
AUDMX_RIGHT3
AF7
AUDMX_INCM3
AE7
AUDMX_LEFT4
AH5
AUDMX_RIGHT4
AG7
AUDMX_INCM4
AH6
AUDMX_LEFT5
AD8
AUDMX_RIGHT5
AF8
AUDMX_INCM5
AE8
AUDMX_LEFT6
AH7
AUDMX_RIGHT6
AH8
AUDMX_INCM6
AG8
AUDMX_AVSS_1
AF5
AUDMX_AVSS_2
AB9
AUDMX_AVSS_3
AA10
AUDMX_AVSS_4
AB10
AUDMX_AVSS_5
AA11
AUDMX_AVSS_6
AB11
AUDMX_LDO_CAP
AC8
AUDMX_AVDD2P5
AE5
LVDS_TX_0_DATA0_P
B4
LVDS_TX_0_DATA0_N
A4
LVDS_TX_0_DATA1_P
C6
LVDS_TX_0_DATA1_N
B6
LVDS_TX_0_DATA2_P
B3
LVDS_TX_0_DATA2_N
A3
LVDS_TX_0_DATA3_P
A1
LVDS_TX_0_DATA3_N
A2
LVDS_TX_0_DATA4_P
D5
LVDS_TX_0_DATA4_N
D6
LVDS_TX_0_CLK_P
C5
LVDS_TX_0_CLK_N
B5
LVDS_TX_1_DATA0_P
B1
LVDS_TX_1_DATA0_N
B2
LVDS_TX_1_DATA1_P
C2
LVDS_TX_1_DATA1_N
C3
LVDS_TX_1_DATA2_P
D1
LVDS_TX_1_DATA2_N
D2
LVDS_TX_1_DATA3_P
E1
LVDS_TX_1_DATA3_N
E2
LVDS_TX_1_DATA4_P
E3
LVDS_TX_1_DATA4_N
E4
LVDS_TX_1_CLK_P
D3
LVDS_TX_1_CLK_N
D4
LVDS_PLL_VREG
F5
LVDS_TX_AVDDC1P2
F1
LVDS_TX_AVDD2P5_1
F4
LVDS_TX_AVDD2P5_2
F2
LVDS_TX_AVSS_1
C1
LVDS_TX_AVSS_2
F3
LVDS_TX_AVSS_3
C4
LVDS_TX_AVSS_4
A5
LVDS_TX_AVSS_5
E5
LVDS_TX_AVSS_6
E6
LVDS_TX_AVSS_7
D7
LVDS_TX_AVSS_8
E7
LVDS_TX_AVSS_9
F7
LVDS_TX_AVSS_10
G7
LVDS_TX_AVSS_11
H7
CLK54_AVDD1P2
AD27
CLK54_AVDD2P5
AD28
CLK54_AVSS
AD26
CLK54_XTAL_N
AC26
CLK54_XTAL_P
AC27
CLK54_MONITOR
AE25
PM_OVERRIDE
Y23
VCXO_AGND_1
AA23
VCXO_AGND_2
AB24
VCXO_AGND_3
AC24
VCXO_AVDD1P2
AF25
VCXO_PLL_AUDIO_TESTOUT
AF24
RESET_OUTB
P24
RESETB
F6
NMIB
N24
TMODE_0
J5
TMODE_1
J4
TMODE_2
J6
TMODE_3
J3
SPI_S_MISO
V25
POR_OTP_VDD2P5
AH3
POR_VDD1P2
AB8
EJTAG_TCK
H4
EJTAG_TDI
H3
EJTAG_TDO
H2
EJTAG_TMS
H1
EJTAG_TRSTB
G1
EJTAG_CE0
H6
EJTAG_CE1
H5
PLL_MAIN_AVDD1P2
AB26
PLL_MAIN_AGND
AC25
PLL_MAIN_MIPS_EREF_TESTOUT
AB27
PLL_RAP_AVD_TESTOUT
M6
PLL_RAP_AVD_AVDD1P2
N6
PLL_RAP_AVD_AGND
N7
BYP_CPU_CLK
AA24
BYP_DS_CLK
Y24
BYP_SYS216_CLK
AE24
BYP_SYS175_CLK
AD25
R212
22
R211
22
C229
12pF
C230
12pF
X903
54MHz
2
1
3
C4014
0.47uF
R4001
34
R4007
34
COMP1_VID_INCM 3:T23
TU_CVBS_INCM
3:T25
COMP2_INCM
3:T22
R4010
5.1
R4009
5.1
C4015
0.47uF
B_VID_INCM
3:T15
R4011
5.1
R4012
5.1
R4008
5.1
C4006
0.1uF
COMP2_VID_INCM
3:T21
C4000
0.1uF
C4001
0.1uF
R4006
34
SIDE_CVBS_INCM
3:T19
R4005
34
C4004
0.1uF
R_VID_INCM
3:T15
C4013
0.47uF
R4004
34
R4000
34
AV1_INCM 3:T20
C4005
0.1uF
C4007
0.1uF
R4002
34
R4003
34
C4003
0.1uF
C4016
0.47uF
SIDE_INCM
3:T18
C4002
0.1uF
COMP1_INCM
3:T24
G_VID_INCM
3:T15
PC_INCM
3:T14
C4017
0.47uF
AV1_CVBS_INCM
3:T19
C4010
0.15uF
C4011
0.15uF
C4008
0.15uF
C4009
0.15uF
C4012
0.15uF
10
15
Route INCM between associated
left and right signals of same channel
left and right signals of same channel
The INCM trace ends at the
same point where the connector
ground connects to the board ground
(thru-hole connector pin).
same point where the connector
ground connects to the board ground
(thru-hole connector pin).
Place test points, resistors
near audio connector.
Connect the other side of
the resistor to GND as close
as possible to the ground
connection of the associated
audio connector.
near audio connector.
Connect the other side of
the resistor to GND as close
as possible to the ground
connection of the associated
audio connector.
54MHz X-TAL
R220 : BCM recommened resistor 562 ohm
BROAD BAND STUDIO
JANG.J.H
When usding FUNDMENTAl then series R = 0 ohm and CL = 8 pF
MNT OUT FOR BCM
When usding Dip-type X-tal then series R = 22 ohm and CL = 12 pF
INCM
CONNECT NEAR BCM CHIP
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