LG 42SL90QD-CA (CHASSIS:LC91L) Service Manual ▷ View online
- 17 -
BLOCK DIAGRAM
CI Sl
ot
CI Sl
ot
11 11
:
TS_TS_
P
A
R
A
L
L
E
L
,
…
LED LCD module
(FHD 100/120Hz)
24/224/2
4
:LVDS :LVDS
datadata
100/1100/1
2
0
H
z
BufferBuffer
4 4
:
TS_TS_
S
ERER
IA
L, L,
…
Saturn6
FRC
(LGE7329A
, IC900)
DDR2
(512M
, IC1000)
DDR2
(512M
, IC1001)
45 45
:
DDR2_DDR2_
D
[
0
:1
5
]
,…
45 45
:
DDR2_DDR2_
D
[
0
:1
5
]
,…
24: 24:
L
VDS VDS
datdat
a
50/6050/60
H
z
DVBDVB-
-CC
Demodul
ator
Demodul
ator
(CE6210, IC1502)(CE6210, IC1502)
2 2
:
FE_FE_
D
EMEM
O
D
_
SCL/SCL/
S
D
A
LGE33
6
9
A
(IC100)
DTM
B
Demodul
ator
2 2
:
TU_TU_
IF
_
O
U
T
+
/-
TUNERTUNER
(TDFR
-Z751D,
TU1100)
BufferBuffer
2 2
:
FE_FE_
D
EMEM
O
D
_
(LGS8G75, IC1804)
1 1
:
FE_FE_
M
A
IN
(C
V
B
S
)
1 1
:
FE_FE_
S
IF
SCL/SCL/
S
D
A
Bluetooth
Module
4
:
B
T
_
O
F
/OFOF
F,F,
DMDM
,D
P,P,
LOUT_LOUT_
A
M
P
- 18 -
A
udi
o A
M
P
(NTP3100, IC701)
6
:
I
2
S
, M
C
L
K
,
…
2
:
SCL,
S
DA
_
S
U
B
/AM
P
HDMI 1
EEPROMEEPROM
(2K, IC600)(2K, IC600)
1
:
EDI
D
_W
P
12
:
DA
TA
+/
-
X
3,
C
LK+
/-
,
V
_
H
DM
I1,
DDC_
S
CL1/S
D
A1
2
:
DDC_
S
CL1/S
D
A1
Sw
itch
Sw
itch
(BU16027KV
, IC603)
(BU16027KV
, IC603)
Sub
(IR)
1
:
IR
2
:
SCL,
S
DA
_
S
U
B
/AM
P
HDMI 4
(SIDE)
EEPROM
(2K, IC601)
12
:
DATA+
/-
X
3
,
C
LK+/-
,
H
PD3,
5
V_
HD
M
I3
DDC_
S
CL
3
/S
D
A
3
2
:
DDC_
S
CL3/S
D
A3
Sub
(L
ED
, C
o
n
tro
l)
nt
1
:
LED_
ON
2
:
SCL,
S
DA
_
S
U
B
/AM
P
2
:
KEY1/2
HDMI 2
HDMI 3
EEPROM
(2K, IC602)
EEPROM
(2K, IC604)
Saturn6Saturn6
DDR2DDR2
45
:
DDR2_
D
[
0
:1
5
]
,…
DDR2DDR2
(1G, IC300)(1G, IC300)
45
:
DDR2_
D
[
0
:1
5
]
,…
Comp 1
Comp 2
AV
1
G
2
:
CVBS
,
DET
4
:
Y,
P
b,
P
r,
D
ET
4
:
Y,
P
b,
P
r,
D
ET
8
:
R
,
R,
G,
B
,
B,
H/
V
S
VS
Y
N
C,
DET
,
DET,
I
S
P
R
X
D/T
X
D
LGE33
6
9
A
LGE33
6
9
A
(IC100
)
(IC100
)
NA
ND FLA
SH
NA
ND FLA
SH
(512M
, IC102)
(512M
, IC102)
1
4
:
P
C
M_
A[
0:
7]
,…
(512M
, IC301)
(512M
, IC301)
R
G
B
Com
p
1
AV
1
EEPROM
(2K, IC400)
1
:
EDI
D
_W
P
8
R
,
G
,B
,
H
/V
S
Y
N
C
,
D
E
T
,I
S
P
_
RX
D/T
X
D
2
:
IS
P_
RX
D/T
X
D
2 2
:
L/L/
R
2
:
L/R
Ser
ia
l FLA
SH
for
boot
(32M
, IC103)
5
:
SPI,
F
la
s
h
_W
P
_
1
EEPROMEEPROM
2 2
:
EEPRO
M
_
S
C
L
,
S
DA
p
Comp 2
Digita
l A
udio
(Optic
)
Phone
(for
RGB)
2
:
L/R
2
:
L/R
1
:
SPDIF
_
O
U
T
2
:
S
ID
E
USB
D
M
/DP
(512K, IC105)
HDCP EEPROM
(8K, IC107)
2 2
:
EEPRO
M
_
S
C
L
,
S
DA
USB 2.0(SIDE)
RS-232C :
Ctrl& SVC
OCPOCP
(M
P6211,IC40
2)
(M
P6211,IC40
2)
M
A
X3232CDR
M
A
X3232CDR
(IC403)(IC403)
2
:
DBG_
RX/T
X
2
SI
DE
_
USB
_
DM
/D
P
2
:
DBG_
RX/T
X
1
:
5V_
U
S
B
2
:
USB_
C
T
L
,
USB_O
C
D
- 19 -
300
500
501
510
310
580
120
122
200
801
LV
1
LV
2
540
530
803
802
550
810
910
A7
900
400
A2
A22
A10
A9
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
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[7]
PCM_A[6]
PCM_A[5]
PCM_A[4]
PCM_A[0]
PCM_A[1]
PCM_A[3]
PCM_A[2]
PCM_A[9]
PCM_A[6]
PCM_A[8]
PCM_A[0]
PCM_D[7]
PCM_D[6]
PCM_D[5]
PCM_A[3]
PCM_A[2]
PCM_D[4]
PCM_D[3]
PCM_D[2]
PCM_D[1]
PCM_A[4]
PCM_A[1]
PCM_D[0]
PCM_A[14]
PCM_A[5]
PCM_A[11]
PCM_A[10]
PCM_A[13]
PCM_A[12]
PCM_A[7]
CI_TS_DATA[3]
CI_TS_DATA[0]
CI_TS_DATA[5]
CI_TS_DATA[1]
CI_TS_DATA[4]
CI_TS_DATA[2]
CI_TS_DATA[7]
CI_TS_DATA[6]
ISP_TXD
EEPROM_SDA
IC102
HY27US08121B-TPCB
SW_NAND_S6_HYNIX
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
Q100
KRC103S
KRC103S
OPT
E
B
C
+3.3V
+3.3V
+3.3V
SPI_DI
/PF_CE0
IC103
W25X32VSSIG
SW_SPI_BOOT
3
WP
2
DO
4
GND
1
CS
5
DIO
6
CLK
7
HOLD
8
VCC
SPI_CS
+3.3V
Q101
KRC103S
OPT
E
B
C
+3.3V
+3.3V
SDA0
SCL0
Flash_WP_1
R174
0
R175
0
R102
0
OPT
R193
1M
1M
R172
0
AR102
22
AR103
22
/PF_CE0
C4
/PF_CE1
D6
/PF_OE
C4
/PF_WE
D7
PF_WP
A7
PF_ALE
D6
/F_RB
C3
AR100
22
AR101
22
/F_RB
/PF_OE
/PF_WE
/PF_CE1
PF_ALE
PF_WP
PCM_A[0-7]
SPI_CS
SPI_CK
SPI_CK
SPI_DO
R101
0
SPI_DO
SPI_DI G12
IR
11:X16;11:AD14
+3.3V_ST
NTP_MUTE
EDID_WP
6:AI16;6:AL7;6:AL12
AMP_RST
7:F6
ERROR_OUT
8:C6
KEY2
11:Y10
KEY1
11:Y9
USB_CTL
4:AL4
PWM0
C104
0.1uF
C106
0.1uF
C103
0.1uF
R1513
33
DVB-CI
R1516
33
DVB-CI
R1510
33
DVB-CI
R1517
33
DVB-CI
R1511
33
DVB-CI
R1518
33
DVB-CI
R1512
33
DVB-CI
R1519
33
DVB-CI
R112
1K
OPT
R105
1K
OPT
R103
10K
R104
10K
R111
3.9K
R1524
33
R1525
33
R1526
33
R1530
33
R1533
4.7K
+3.3V
EEPROM_SDA
E16;E20;T19
R1539
1K
R1540
1K
L102
EEPROM_SCL
E16;T19;Y13
IC107
CAT24WC08W-T
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
+3.3V
EEPROM_SDA
E16;T19;Y14
EEPROM_SCL
INV_CTL
Flash_WP_1
SCL1
SDA1
PANEL_CTL
DBG_RX
POWER_ON/OFF1
USB_OCD
4:AG3
SDA_SUB/AMP
7:F12;11:AG10
SDA1
AK12
R123
0
FE_DEMOD_SDA
10:I12
SCL_SUB/AMP
7:F13;11:AG9
R128
0
R122
0
R129
0
EEPROM_SDA
E16;E20;Y14
SDA0
T21;Y14
SCL0
T21;Y14
FE_DEMOD_SCL
10:I12
EEPROM_SCL
E16;E19;Y13
SCL1
AK12
+3.3V
COMP1_DET
EEPROM_SCL
E16;E19;T19
ISP_RXD
COMP2_DET
DSUB_DET
AV1_DET
4:M4
R151
0
R1509
0
OPT
R131
0
MEMC_SCL
11:Q8
MEMC_SDA
11:J8
R130
0
SDA0
T21;Y14
SCL0
T21;Y14
5V_HDMI_2
5V_HDMI_1
X100
12MHz
12MHz
SB_MUTE
SW100
JTP-1127WEM
1
2
4
3
+3.3V_ST
R115
10K
10K
IC101
KIA7427F
2
GND
3
OUT
1
VCC
C101
0.022uF
16V
R107
470
SIDE_USB_DM
4:AJ6
R132
15K
OPT
R133
15K
15K
OPT
R179
0
R178
0
SIDE_USB_DP
4:AJ5
OPC_EN
DBG_TX
DBG_RX
+3.3V
C105
10uF 6.3V
LED_ON
MODEL_OPT_3
MODEL_OPT_2
MODEL_OPT_0
MEMC_RESET
+3.3V
MODEL_OPT_1
R1611
0
MODEL_OPT_1
MODEL_OPT_2
R189
0
MODEL_OPT_0
MODEL_OPT_3
R126
0
FE_BOOSTER_CTL
C111
20pF
C112
20pF
SEL2_HDMI_SW
5V_HDMI_3
+12V
R1541
10K
OPT
POWER_DET
R1546
0
R1542
1K
OPT
R1529
1.8K
Q1500
2SC3052
2SC3052
OPT
E
B
C
IC1500
KIA7042AF
2
G
3
O
1
I
+3.3V_ST
R1528
2.7K
1%
R1543
10K
PWM2
R1500
1K
OPT
PWM2
R1501
1K
C1501
2.2uF
2.2uF
OPT
+3.3V
R198
1K
A_DIM
PWM0
R1544
100
R199
1K
OPT
C1500
1uF
OPT
OPT
PWM0
PWM1
PWM_DIM
R168
0
R100
0
R116
0
R146
0
R173
0
C114
0.1uF
C100
0.1uF
0.1uF
R1612
100
R1600
100
R183
100
R190
100
R153
100
R191
100
R154
100
OPT
R177
100
OPT
R184
100
R185
100
R167
100
R159
100
R127
100
R188
100
R186
100
R148
100
R166
100
R157
100
R1550
100
R160
100
R156
100
OPT
R147
100
R192
100
R155
100
R195
10K
R140
22
R142
22
R141
22
R143
22
R171
22
R161
22
R158
4.7K
R152
4.7K
4.7K
OPT
C102
10uF
6.3V
R1503
2.2K
R1502
2.2K
POWER_DET
DBG_TX
POWER_DET
R187
100
OPT
R1523
100
ISP_TXD
R1520
100
R182
100
OPT
R1609
3.3K
MODEL_OPT_4
MODEL_OPT_4
R1601
100
RF_SWITCH_SEL
R114
0
R194
10K
R117
0
R180
4.7K
4.7K
HDMI_EQ_SEL
R150
0
OPT
R1603
3.3K
R1607
3.3K
OPT
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
HPD3
R196
100
R1613
3.3K
OPT
R1604
3.3K
OPT
R1606
3.3K
R1608
3.3K
OPT
R1610
3.3K
OPT
R1605
3.3K
OPT
R1614
3.3K
OPT
R136
10K
10K
+3.3V_ST
R135
10K
10K
OPT
+3.3V
R118
22
R119
22
C107
8pF
OPT
C108
8pF
8pF
OPT
R1545
100
R125
4.7K
R124
4.7K
R165
0
R164
0
R162
0
R163
0
R1535
0
R1536
0
PWM1
R1534
100
R170
100
R169
100
R108
100
PCM_A[0-14]
PCM_D[0-7]
R1514
33
DVB-CI
R1515
33
DVB-CI
PCM_RST
/PCM_IRQA
/PCM_WE
/PCM_WAIT
/PCM_IORD
/PCM_REG
/PCM_CE
/PCM_OE
/PCM_IOWR
/PCM_CD
CI_TS_CLK
005:D10
CI_TS_SYN
005:D10
CI_TS_VAL
005:D10
CI_TS_DATA[0-7]
BT_ON/OFF
R176
100
OPT
BT_DP
BT_DM
PCM_5V_CTL
011:E25
R1537
22 OPT
RESET_CE6210
SEL_CE6210
FE_TS_CLK
FE_TS_VAL_ERR
FE_TS_SYN
FE_TS_SERIAL_DATA
SEL_LGS8G75
R1538
100
RESET_LGS8G75
R134
10K
10K
NON_CI
PCM_D[6]
PCM_D[5]
+3.3V
R121
10K
10K
NON_CI
+3.3V
R110
10K
10K
NON_CI
R120
1K
1K
NON_CI
+5V_GENERAL
R109
10K
10K
NON_CI
PCM_A[10]
R1506
3.3K
R1507
3.3K
IC105
M24512-WMW6G(REV.B)
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
BIT_SEL
9:AI24
EEPROM
Serial FLASH MEMORY
for BOOT
for BOOT
I2C
NAND FLASH MEMORY
1 17
MAIN_1
EAX61333001
/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)
2009.7.2.
PM GPIO Assignment Recommended by MStar
1386 WON
$0.76
$0.418
$0.199
VOLTAGE DETECTOR
*Mstar reset:Active high reset
SIDE_USB
0IMMRMP008A(MICROCHIP)
POWER DETECT
MODEL OPTION
080923_Time Delay
MCU BOOT STRAP
DIMMING
10 : BOOT 51
11 : BOOT RISC
11 : BOOT RISC
Interrupt for ISP Wake up in STB Mode
LCD
OPT_0
PDP
(HP_DET)
China DTV(LC91L)
H
H
L
H
PULL UP is applied on the FRC
No FRC
FRC
SWAP_B LVDS
OPT_1
SWAP_A LVDS
FHD
HD
L
H
HD
OPT_3
FHD
OPT_2
LED Moving
LED Nomal
42/47SL90QD-CA (Slim LED)
Soft_Touch
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