Read LG 55LH90 (CHASSIS:LA92C) 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.
PCM_A[1]
PCM_A[3]
PCM_A[2]
TS_DATA[4]
TS_DATA[0]
TS_DATA[1]
TS_DATA[5]
PCM_A[0]
PCM_A[4]
PCM_A[6]
PCM_A[7]
PCM_A[5]
PCM_A[5]
TS_DATA[6]
TS_DATA[2]
TS_DATA[7]
PCM_A[7]
PCM_A[4]
PCM_A[0]
PCM_A[1]
PCM_A[6]
PCM_A[3]
TS_DATA[3]
PCM_A[2]
R256
15K
OPT
R2193
100
Q102
2SC3052
2SC3052
OPT
E
B
C
R118
4.7K
OPT
R2183
33
OPT
R101
0
R2189
100
R213
33
OPT
R204
2.2K
R219
100
R188
4.7K
R226
33
R158
3.9K
R154
1K
1K
OPT
R286
0
MEMC_RESET
008:Y7
R222
0
OPC_EN
Flash_WP_1
001:AR30
+3.3V_ST
R2160
22
OPT
R251
100
R281
10K
R147
1K
OPT
EEPROM_SDA
001:O16;001:AB28;001:AO6
EEPROM_SDA
001:H5;001:AB28;001:AO6
R248
100
R2185
22
/PF_WE
001:AB29
R225
33
R287
0
OPT
R253
10K
R241
100
R153
10K
R195
100
R2186
22
/PF_OE
001:AB29
VSB_CTRL
010:D9
FE_TUNER_SDA
001:AI8;010:N25
SPI_DI
001:AR36
SPI_CK
001:I11
R203
0
AR103
22
+3.3V_ST
+3.3V_ST
Q106
2SC3052
2SC3052
E
B
C
R2111
33
C131
0.1uF
IR
004:G23;004:AD4
R151
1K
R220
100
R2176
100
/PF_CE0
001:AB30
WARM_LED_ON
C100
0.1uF
0.1uF
AR100
22
R2181
33
OPT
TS_SYNC
010:AC19;010:AK20
R252
1M
1M
R2178
33
OPT
+3.3V
/F_RB
001:S11
S5/S6_Reset
SPI_DI
001:I10
PCM_A[0-7]
+3.3V_ST
R2194
22
PWM1
001:N10;001:AL12
PF_WP
001:AB29
R2112
33
L104
+24V
C212
4.7uF
10V
R132
4.7K
OPT
INV_CTL
+3.3V
R255
100
KEY1
004:B27
+5V_GENERAL
SCL0
001:AO6;001:AO7
SDA0
001:AO7;001:AO7
/PF_OE
001:S10
R268
22
C162
0.1uF
R110
100
R111
100
OPT
+3.3V_ST
+3.3V_ST
R179
100 OPT
R237
100
OPT
R242
100
OPT
PWM2
001:N10;001:AL12
R194
0
R247
10K
LED_R/LED_MOVING
001:H16
R2126
0
R282
10K
OPT
+3.3V
R254
15K
OPT
SPI_CS
001:E12
USB_OCD
004:AN27
R228
100
R180
0
POWER_ON_DELAY
VSB_RESET
010:AJ26
R218
0
R150
1K
NTP_MUTE
001:H15
SPI_DO
001:AR36
R240
0
R193
0
COMP2_DET
004:W16
R245
100
SPI_CS
001:AR36
R227
33
R103
10K
/PF_WE
001:T7
USB_CTL
004:AM28
KEY2
004:B27
R231
0
R2201
30K
R2177
33
OPT
R215
0
IC101
MX25L3205DM2I-12G
SPI_FLASH
3
WP#
2
SO
4
GND
1
CS#
5
SI
6
SCLK
7
HOLD#
8
VCC
AR101
22
R2191
0
ISP_TXD
001:AR31;004:AB26
POWER_DET
001:AR32
/F_RB
001:AB29
EEPROM_SCL
001:H6;001:O16;001:AO6
R217
0
R267
22
Q103
2SC3052
2SC3052
OPT
E
B
C
POWER_EN
R2184
33
OPT
DBG_RX
R2190
0
R2198
1K
OPT
SB_MUTE
R2125
0
EEPROM_SCL
001:O16;001:AB28;001:AO6
USB_DM
004:AL26
TS_CLK
010:AC19;010:AK19
R233
0
ISP_RXD_TR
008:C23
L110
R184
22
POWER_ON/OFF
R246
100
OPT
R105
4.7K
R181
22
R192
22
R187
0
+3.3V
DBG_TX
R283
10K
PANEL_CTL
R2127
0
C213
10uF
6.3V
+3.3V
R230
10K
SIDEAV_DET
004:AA7
SPI_DO
001:E11
R249
100
+5V_GENERAL
R235
100
R207
33
OPT
TS_DATA[0-7]
010:AD18
R156
1K
R2200
10K
PWM0
001:AB24;001:AL12
R183
22
R200
100
L105
OPT
PF_ALE
001:T8
R2202
5.1K
C126
0.1uF
R2123
33
OPT
+5V_GENERAL
R2172
33
OPT
R2206
OPT
R223
0
R239
0
PWM1
001:AB24;001:AL12
Flash_WP_1
001:C11
R244
100
1
2
4
3
R209
33
OPT
R284
0
OPT
/PF_CE1
001:AB30
AMP_RST
006:K19
R2188
100
R2192
0
OPT
R2124
33
OPT
R178
33
OPT
Q105
2SC3052
2SC3052
E
B
C
R102
0
OPT
R202
0
BT_DP
R2174
100
LED_B
001:H16
IC102
HY27US08121B-TPCB
NAND FLASH
26
NC_17
27
NC_18
28
NC_19
29
I/O0
30
I/O1
31
I/O2
32
I/O3
33
NC_20
34
NC_21
35
NC_22
36
VSS_2
37
VCC_2
38
PRE
39
NC_23
40
NC_24
41
I/O4
42
I/O5
43
I/O6
44
I/O7
45
NC_25
46
NC_26
47
NC_27
48
NC_28
17
ALE
3
NC_3
6
NC_6
16
CLE
15
NC_10
14
NC_9
13
VSS_1
12
VCC_1
11
NC_8
10
NC_7
9
CE
8
RE
7
R/B
4
NC_4
5
NC_5
25
NC_16
24
NC_15
23
NC_14
2
NC_2
22
NC_13
21
NC_12
1
NC_1
20
NC_11
19
WP
18
WE
R2187
22
R208
33
OPT
R221
100
+3.3V
EEPROM_SDA
001:H5;001:O16;001:AO6
R2180
33
OPT
VGA_EEPROM_WP
004:AB27
R236 100
R196
100
R216
0
R148
1K
OPT
FE_TUNER_SCL
001:AI8;010:N25
R201
100
Q101
KRC103S
KRC103S
OPT
R155
1K
R250
100
IC104
AT24C512BW-SH-T
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
EEPROM_SCL
001:H6;001:AB28;001:AO6
PF_ALE
001:AB29
ERROR_OUT
007:B24
R2173
100
R214
33
OPT
R2175
100
S5/S6_Reset
001:V17
R212
33
OPT
R112
0
+5V
R272
100
OPT
SPI_CK
001:AR35
R2179
33
OPT
PF_WP
001:R7
ISP_TXD_TR
008:C23
R191
22
R157
1K
OPT
ISP_RXD
004:AB26
R258
10K
OPT
P101
SMW250-04
1
2
3
4
R106
4.7K
X100
12MHz
12MHz
R206
33
OPT
SCL1
001:AO5;001:AO5
Q100
KRC103S
E
B
C
AV_CVBS_DET
004:K12
R234
0
ISP_TXD
R190
2.2K
BT_DM
DBG_RX
R211
33
OPT
R232
0
R285
0
OPT
C161
10uF 6.3V
R238
100
SDA1
001:AO6;001:AO5
/PF_CE1
001:T8
R257
100
R104
33
TS_VALID
010:AC20;010:AK19
USB_DP
004:AL26
R2199
2.2K
OPT
+3.3V
R210
33
OPT
R2195
15K
PCM_A[0-7]
PWM0
001:N11;001:AL12
R108
100
OPT
COMP1_DET
004:AJ16
DSUB_DET
004:AC22
R205
33
OPT
/PF_CE0
001:S10
+3.3V
R224
100
R243
100
IC105
CAT24WC08W-T
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
R2182
33
OPT
AR102
22
R280
10K
POWER_DET
R2197
10K
OPT
RL_ON
R182
22
22
+12V
DIMMING_RESET
001:AO5;001:AO5
FE_DEMOD_SCL
010:AK22
+5V_GENERAL
R199
0
MEMC_SCL
008:C22
EEPROM_SDA
001:H5;001:O16;001:AB28
SDA0
001:AB28;001:AO7
R2107
1.2K
EEPROM_SCL
001:H6;001:O16;001:AB28
TDA9996_SCL
005:AI5
FE_TUNER_SDA
001:AR28;010:N25
SCL1
001:AO5;001:AR30
SDA1
001:AO6;001:AR30
R198
0
0
R197
4.7K
OPT
R2113
0
OPT
R2109
1.2K
FE_TUNER_SCL
001:AR29;010:N25
FE_DEMOD_SDA
010:AK21
R2104
0
R2106
4.7K
OPT
R2103
0
SCL_SUB/AMP
006:K12;004:K27
R2114
0
OPT
TDA9996_SDA
005:AH5
R2108
1.2K
SDA_SUB/AMP
006:K12;004:K27
R2105
0
+3.3V
R2101
0
R2102
0
R2100
0
SCL0
001:AB28;001:AO6
R2110
1.2K
MEMC_SDA
008:C22
IC100
LGE3369A (Saturn6 Non RM)
HWRESET
D4
PCMD0/CI_D0
AC16
PCMD1/CI_D1
AA15
PCMD2/CI_D2
AA16
PCMD3/CI_D3
AC6
PCMD4/CI_D4
Y10
PCMD5/CI_D5
Y11
PCMD6/CI_D6
Y12
PCMD7/CI_D7
Y13
PCM_A0/CI_A0
AB16
PCM_A1/CI_A1
AC15
PCM_A2/CI_A2
AC14
PCM_A3/CI_A3
AB14
PCM_A4/CI_A4
AC12
PCM_A5/CI_A5
AB8
PCM_A6/CI_A6
AC13
PCM_A7/CI_A7
AA9
PCM_A8/CI_A8
AB5
PCM_A9/CI_A9
AA4
PCM_A10/CI_A10
V4
PCM_A11/CI_A11
Y4
PCM_A12/CI_A12
AB9
PCM_A13/CI_A13
AA7
PCM_A14/CI_A14
AD6
PCM_RST/CI_RST
AA14
PCM_CD/CI_CD
AB18
/PCM_OE
Y5
PCM_REG/CI_CLK
AB15
PCM_WAIT/CI_WACK
AA10
/PCM_IRQA
AC8
/PCM_WE
AC7
PCM_IOWR/CI_WR
AA5
PCM_IOR/CI_RD
W4
/PCM_CE
T4
/PF_CE0
AE6
/PF_CE1
AF6
/PF_OE
AA12
/PF_WE
AA11
PF_ALE
AC9
PF_AD15
Y14
F_RBZ
AB11
UART2_TX/SCKM
F8
UART2_RX/SDAM
D11
DDCR_DA
AB21
DDCR_CK
AC21
DDCA_CLK
J1
DDCA_DA
J2
UART_RX2
W5
UART_TX2
V5
PWM0
AB13
PWM1
AB12
PWM2
AD12
PWM3
AA13
SAR0
A4
SAR1
B4
SAR2
F4
SAR3
E4
IRIN
C4
GPIO44
AC11
GPIO96
D9
GPIO88
D10
GPIO90/I2S_OUT_MUTE
D7
GPIO91
E11
GPIO97
E8
GPIO98
E10
GPIO99
D6
GPIO103/I2S_OUT_SD3
D5
GPIO102
C5
XIN
B3
XOUT
A3
TESTPIN/GND
E6
SPI_DI
AE11
SPI_DO
AF12
/SPI_CS
AE12
SPI_CK
AD11
USB_DP_1
B5
USB_DM_1
A5
USB_DM_2
AC10
USB_DP_2
AB10
GPIO_PM0/GPIO134
E5
GPIO_PM1/GPIO135
F5
GPIO_PM2/GPIO136
G5
GPIO_PM3/GPIO137
H5
GPIO_PM4/GPIO138
F6
GPIO_PM5/INT1/GPIO139
G6
GPIO_PM6/INT2/GPIO140
H6
GPIO131/LDE/SPI_WPn1
AC17
GPIO130/LCK
AB17
GPIO132/LHSYNC/SPI_WPn
AF11
GPIO60/PCM2_RESET/RX1
AA18
GPIO62/PCM2_CD_N/TX1
AA17
LHSYNC2/I2S_OUT_MUTE/RX1
E7
LVSYNC/GPIO133
AC18
GPIO79/LVSYNC2/TX1
C6
UART2_RX/GPIO84
F9
UART2_TX/GPIO85
F10
UART1_RX/GPIO86
A6
UART1_TX/GPIO87
B6
GPIO42/PCM2_CE_N
AF5
GPIO43/PCM2_IRQA_N
AF10
TS0_D0
AA8
TS0_D1
Y8
TS0_D2
Y9
TS0_D3
AB7
TS0_D4
AA6
TS0_D5
AB6
TS0_D6
U4
TS0_D7
AC5
TS0_SYNC
AC4
TS0_VLD
AD5
TS0_CLK
AB4
TS1_D0
AB19
TS1_SYNC
AA20
TS1_VLD
AC19
TS1_CLK
AA19
ET_TXD0
C10
ET_TXD1
B11
ET_TX_CLK
A9
ET_RXD0
C11
ET_RXD1
C9
ET_TX_EN
B10
ET_MDC
A10
ET_MDIO
B9
ET_COL
A11
GPIO67
A7
GPIO68
B8
IC103
MAX810RTR
1
GND
3
VCC
2
RESET
IC107
NCP803SN293
1
GND
3
VCC
2
RESET
DBG_TX
R119
100
POWER_DET
BT_ON/OFF
HP_AU_SW
BT_AU_SW
R2205
OPT
R262
30K
OPT
R100
1K
OPT
R2203
0
0
12V_DET
R2204
0
0
24V_DET
R2233
4.7K
R2196
7.5K
+3.3V
C197
0.1uF
50V
0.1uF
50V
L180
BLM18PG121SN1D
L181
BLM18PG121SN1D
OPT
R260
3.3K
R266
3.3K
C187
20pF
C186
20pF
MCU BOOT STRAP
Stand-by GPIO(SAR[0-3])
1386 WON
PM GPIO assigned followed by CoP
HDCP EEPROM
10 : BOOT 51
11 : BOOT RISC
11 : BOOT RISC
ISP Port for Triton & MEMC
S5 Reset
$0.418
D6 D7 E11 B9
Addr:10101--
NAND FLASH MEMORY
$0.76
ISP Debug port for S5
Interrupt for ISP Wake up in STB Mode
$0.199
POWER DETECT
I2C for Tuner_5V
EEPROM
Serial FLASH MEMORY
for BOOT
for BOOT
USB
/PF_CE0
H : Serial Flash
L : NAND Flash
/PF_CE1
H : 16 bit
L : 8 bit
H : Serial Flash
L : NAND Flash
/PF_CE1
H : 16 bit
L : 8 bit
--------------------------
HIGH LOW
D6 LCD PDP
D7 120Hz Non-120Hz
--------------------------
( E11 : B9 )
Low : Low HD
Low : High FHD
High : Low 1440x900
High : High 1680x1050
--------------------------
HIGH LOW
D6 LCD PDP
D7 120Hz Non-120Hz
--------------------------
( E11 : B9 )
Low : Low HD
Low : High FHD
High : Low 1440x900
High : High 1680x1050
--------------------------
I2C
CH1
CH6
CH4
HW IIC
CH2
9
KIM SUNG KYEONG
15
08.11.19
Mstar(JUPITER)
MAIN IC
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