Read LG 26LU50FD-CA (CHASSIS:LC91M) 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.
MAIN_1
R1540
1K
R1519
33 OPT
AMP_RST
006:K6
IC103
W25X32VSSIG
download
3
WP
2
DO
4
GND
1
CS
5
DIO
6
CLK
7
HOLD
8
VCC
DSUB_DET
004:Z23
PCM_A[7]
R125
4.7K
R1601
100
PWM0
001:M16;001:X16
R101
0
+3.3V
MODEL_OPT_1
001:AA21
R1516
33 OPT
PWM2
001:X17
ISP_TXD
001:AN11;004:Z18
DBG_RX
001:Y15;004:F17
ERROR_OUT
007:L21
R1525
33
MODEL_OPT_1
001:AB25
R122
0
PCM_A[7]
+3.3V_ST
AV1_DET
004:E8
+3.3V
R102
0
OPT
+3.3V_ST
IC107
CAT24WC08W-T
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
PWM2
R112
1K
OPT
R113
10K
OPT
/PF_CE0
001:D5
POWER_ON/OFF1
PCM_A[6]
+5V_GENERAL
L102
SCL1
001:AJ12
Q100
KRC103S
KRC103S
OPT
E
B
C
SPI_DO
001:D12
KEY2
008:Z12
SDA0
001:J21
R1510
33 OPT
/PF_CE1
001:E7
/F_RB
R1526
33
MODEL_OPT_2
001:AB25
PCM_A[5]
R1514
10K
PWM1
REAR_USB_DM
004:AK16
+3.3V
R193
1M
1M
SPI_DI
001:H13
R115
10K
SCL0
001:J21
KEY1
008:Z12
EEPROM_SCL
001:F17;001:J20;001:Y13
+3.3V
/PF_OE
001:D4
R105
1K
1K
OPT
PCM_A[4]
/PF_OE
OPC_EN
008:K11
POWER_DET
001:AN10;001:AN11
R126
0
R129
0
PWM0
R132
15K
OPT
/FE_RESET
009:H24
IR
008:Z14
Flash_WP_1
R1517
33 OPT
R1530
33
/PF_WE
001:E7
PCM_A[3]
R108
10K
BUF_TS_VAL_ERR
R1515
10K
/PF_WE
PWM_DIM
008:K8;007:L22
SDA_SUB/AMP
006:K12
LED_R
008:AD16
MODEL_OPT_2
001:AA21
C104
0.1uF
5V_HDMI_2
005:S3;005:V13
R172
0
IC101
KIA7427F
2
GND
3
OUT
1
VCC
COMP1_DET
004:W5
R149
100
PCM_A[2]
DBG_TX
001:AN10;004:F16
PF_WP
001:B8
MODEL_OPT_4
001:AA20
R140
22
R103
10K
SPI_CS
BUF_TS_SYN
PWM0
+3.3V
/PF_CE1
EEPROM_SDA
001:F17;001:O13;001:Y14
SDA1
001:AJ12
EDID_WP
004:Z17;005:I15;005:W15;005:AL15
R189
0
R151
0
MODEL_OPT_0
001:AB24
RF_SWITCH_SEL
009:C14
R133
15K
15K
OPT
EEPROM_SCL
001:J20;001:O13;001:Y13
PCM_A[1]
5V_HDMI_1
005:E3;005:H13
R1533
4.7K
R1511
33 OPT
+3.3V
DBG_RX
001:AJ11;004:F17
C120
1uF
OPT
PF_ALE
001:E7
PCM_A[0]
C109
2.2uF
OPT
OPT
+3.3V
SDA0
001:Y14
BUF_TS_CLK
+3.3V
PF_ALE
A_DIM
007:E22
LVDS_SEL
008:L6
R1523
100
INV_CTL
007:L19
AR102
22
R1558
10K
10K
PCM_A[0]
EEPROM_SDA
001:F17;001:J20;001:Y14
C106
0.1uF
+3.3V_ST
PCM_A[1]
X100
12MHz
12MHz
R106
1K
/F_RB
001:D4
MODEL_OPT_3
001:AJ20
R104
10K
SCL0
001:Y14
PF_WP
BUF_TS_DATA[0]
R123
0
R1509
0
OPT
R141
22
R179
0 OPT
Flash_WP_1
001:B12
PCM_A[2]
+3.3V
R1518
33 OPT
AR100
22
+3.3V
C101
0.022uF
16V
R1521
100
R124
4.7K
SPI_CS
001:D12
POWER_DET
001:H25;001:AN11
R192
100 OPT
SCL1 001:J22
C103
0.1uF
PCM_A[3]
R1506
4.7K
EEPROM_SDA
001:F17;001:J20;001:O13
SB_MUTE
006:Y12
EEPROM_SCL
001:F17;001:J20;001:O13
Q101
KRC103S
OPT
E
B
C
R111
3.9K
+24V/+15V
C111
20pF
R174
0
FE_DEMOD_SDA
009:H25
SPI_CK
001:H13
R178
0 OPT
SDA1 001:J22
SPI_DI
PCM_A[4]
NTP_MUTE
006:Y13
R1512
33
R1539
1K
ISP_RXD
004:Z18
+3.3V
ISP_TXD
001:Y15;004:Z18
MODEL_OPT_4
001:AB26
FE_DEMOD_SCL
009:H27
R107
470
AR103
22
SCL_SUB/AMP
006:K12
SPI_CK
C105
10uF 6.3V
FE_BOOSTER_CTL
009:Z15
IC102
HY27US08121B-TPCB
download
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
PCM_A[5]
R1513
33 OPT
/PF_CE0
BIT_SEL
008:K14
PANEL_CTL 007:AE6
R1507
4.7K
+3.3V
R1524
33
EEPROM_SDA
001:J20;001:O13;001:Y14
C112
20pF
MODEL_OPT_3
001:AB26
EEPROM_SCL
001:F17;001:O13;001:Y13
R109
10K
R128
0
AR101
22
PWM1
001:M17
SPI_DO
PCM_A[6]
REAR_USB_DP
004:AK16
+3.3V
R175
0
MODEL_OPT_0
001:AA22
DBG_TX
001:Y15;004:F16
POWER_DET
001:H25;001:AN10
R1541
100
R1503
2.2K
R1502
2.2K
C102
10uF
16V
3216
C100
0.1uF
0.1uF
C114
0.1uF
0.1uF
R100
0
R114
0
R116
0
R117
0
R127
100
R142
22
R143
22
R146
0
R147
100
R150
22
R153
100
R155
100 OPT
R156
100 OPT
R157
100
R158
4.7K
R159
100
R160
100
R166
100
R167
100
R173
0
R168
0
R181
0
R182
100
OPT
R183
100
OPT
R184
100
R185
100
R186
100
R187
100
OPT
R188
100 OPT
R190
100
R191
100 OPT
R195
10K
10K
R1534
100
R1537
22
OPT
R1538
22
OPT
R1549
4.7K
4.7K
R1614
10K
R161
22
R171
22
R1500
1K
OPT
R1501
1K
R199
1K
OPT
R198
1K
R1612
OPT
R1603
FHD
R1605
BLINKING_LED
R1607
FRC
R1609
LCD
R1613
OPT
R1604
HD
R1606
MOVING_LED
R1608
NO FRC
R1610
PDP
R1602
100
R1561
10K
10K
+3.3V_ST
R1563
10K
10K
OPT
+3.3V
R1552-*1
1K
26inch
1K
26inch
R162
0
R163
0
R164
0
R165
0
R1535
0
R1536
0
R118
22
R119
22
C115
8pF
50V
OPT
8pF
50V
OPT
C116
8pF
50V
OPT
8pF
50V
OPT
R120
100
OPT
R144
100
FE_TS_SYN
009:T22
BUF_TS_CLK
BUF_TS_DATA[0]
AR515
33
FE_TS_SERIAL
009:T21
FE_TS_DATA_CLK
009:T22
BUF_TS_SYN
FE_TS_VAL_ERR
009:T21
BUF_TS_VAL_ERR
R169
100
R170
100
R1551
3.9K
3.9K
R148
10K
AV2_DET
004:AM22
R154
100 26inch
R1564
10K 22inch
IC105
M24512-WMW6G(REV.B)
Rev B
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
IC105-*1
M24512-WMW6
Rev A
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
R1522
0
LED_W
008:AD15
IC1500
KIA7042AF
2
G
3
O
1
I
R1552
1.8K
22inch
R176
100 OPT
IC100
LGE3368A (Saturn6 No-DivX)
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
S_DET
004:AK5
R177
100
SW100
TMSV153BRA
1
2
4
3
EEPROM
Serial FLASH MEMORY
for BOOT
for BOOT
I2C
NAND FLASH MEMORY
10 : BOOT 51
11 : BOOT RISC
11 : BOOT RISC
MCU BOOT STRAP
1 9
EAX61023402
/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
Addr:10101--
HDCP EEPROM
IC105: EAN43352801(ATMEL SHRINK)
2009.04.28
PM GPIO Assignment Recommended by MStar
Interrupt for ISP Wake up in STB Mode
VOLTAGE DETECTOR
*Mstar reset:Active high reset
REAR_USB(SVC)
EAN43349001(ST Rev.A)
POWER DETECT
[ MODEL OPTION ]
OPT_0
OPT_1
OPT_2
OPT_3
H
L
LCD
PDP
FHD
HD
/RST
JTDO
/JTRST
JTINT
(HP_DET)
NO FRC
FRC
MOVING_LED
BLINKING_LED
SYMBOL:C
LVDS_CH_B
LVDS_CH_A
FHD
HD/SMALL
(FE_TUNER_SCL)
(FE_TUNER_SDA)
LC91M(22/26LU50FD-CA)
(COMP2_DET)
(USB_CTL)
(USB_OCD)
*replacement:6600R00004C
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