LG 37SL80YD-AA (CHASSIS:LB91T) Service Manual ▷ View online
- Auto Download
• After enter Service Mode by pushing “ADJ” key,
• Enter EDID D/L mode.
• Enter “START” by pushing “OK” key.
• Enter EDID D/L mode.
• Enter “START” by pushing “OK” key.
* Edid data and Model option download (RS232)
- Manual Download
* Caution
• Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
- Digital EDID : Pin3 exists
• Never connect HDMI & D-sub Cable at the same time.
• Use the proper cables below for EDID Writing.
• Download HDMI1, HDMI2 separately because HDMI1 is
• Use the proper cables below for EDID Writing.
• Download HDMI1, HDMI2 separately because HDMI1 is
different from HDMI2.
1) ANALOG DATA 128 Byte (2Bi)
2) DIGITAL DATA(HDMI-1/2) 256Byte
- Detail EDID Options are below
ⓐ Product ID
ⓑ Month, Year: S/W Released day :
ex) Monthly : ‘09’ -> ‘09’
Year : ‘2006’ -> ‘10’
ⓒ Model Name(Hex):
ⓓ Checksum: Changeable by total EDID data.
ⓔ Vendor Specific
- 13 -
EZ ADJUT
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Country Group
5. ADC Calibration
6. White Balance
7. Test Pattern
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Country Group
5. ADC Calibration
6. White Balance
7. Test Pattern
8. EDID D/L
9. Sub B/C
10. V-Com
11. P-Gamma
10. V-Com
11. P-Gamma
EDID D/L
HDMI1
HDMI2
RGB
NG
NG
NG
Reset
Start
EDID D/L
HDMI1
HDMI2
RGB
OK
OK
OK
Reset
Start
0 1 2 3 4 5 6 7 8 9 A B C D E F
00
00 FF FF FF FF
FF FF 00
1E
6D
01
01
01
01
10
01 03 68
73 41 78
0A
CF
74
A3
57
4C
B0 23
20
09 48 4C A1 08
00 81 80
61
40
45
40
31
40
01 01
30
01 01 01 01 01
01 02 3A
80
18
71
38
2D
40
58 2C
40
45 00 7E 8A 42
00 00 1E
01
1D
00
72
51
D0
1E 20
50
6E 28 55 00 7E
8A 42 00
00
1E
00
00
00
FD
00 3A
60
3E 1E 53 10 00
0A 20 20
20
20
20
20
70
00
a
d
b
c
c
0 1 2 3 4 5 6 7 8 9 A B C D E F
00
00 FF FF FF FF
FF FF 00
1E
6D
01
01 01
10
01 03 80
73 41 78
0A
CF
74
A3
57
4C
B0 23
20
09 48 4C A1 08
00 81 80
61
40
45
40
31
40
01 01
30
01 01 01 01 01
01 02 3A
80
18
71
38
2D
40
58 2C
40
45 00 7E 8A 42
00 00 1E
01
1D
00
72
51
D0
1E 20
50
6E 28 55 00 7E
8A 42 00
00
1E
00
00
00
FD
00 3A
60
3E 1E 53 10 00
0A 20 20
20
20
20
20
70
80
02 03 26 F1 4E
10 1F 84
13
05
14
03
02
12
20 21
90
22 15 01 26 15
07 50 09
57
07
A0
E3
05 03
01 01 1D
80
18
71
1C
16
20
58 2C
B0
25 00 7E 8A 42
00 00 9E
01
1D
00
80
51
D0
0C 20
C0
40 80 35 00 7E
8A 42 00
00
1E
02
3A
80
18
71 38
D0
2D 40 58 2C 45
00 7E 8A
42
00
00
1E
66
21
50 B0
E0
51 00 1B 30 40
70 36 00
7E
8A
42
00
00
1E
00 00
F0
00 00 00 00 00
00 00 00
00
00
00
00
00
00
00
e
01
01
a
b
d
c
c
e
d
MODEL NAME
HEX
EDID Table
DDC Function
FHD Model
0001
01 00
Analog/Digital
MODEL MODEL
NAME(HEX)
All
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV)
INPUT
MODEL NAME(HEX)
HDMI1 67030C001000B82D
HDMI2 67030C002000B82D
HDMI3 67030C003000B82D
HDMI4 67030C004000B82D
NO
Item
CMD1 CMD2 Data0
Enter
Adjust
When transfer
Download
‘Mode In’
A
A
0 0
the ‘Mode In’,
Mode
Carry the command.
EDID data
Download
A
D
1 0
Automatically adjustment
Model option
(The use of a internal pattern)
Item
Manufacturer ID
Version
Revision
Condition
GSM
Digital : 1
Digital : 3
Data(Hex)
1E6D
01
03
D-sub to D-sub
DVI-D to HDMI or HDMI to HDMI
For HDMI EDID
For Analog EDID
- 14 -
BLOCK DIAGRAM
TS_Serial In
DDR2 256M
Qimo
nda/Hynix
DDR2 256M
Qimo
nda/Hynix
DTV I
F
+/
-
Tune
r CVBS,
SI
F
TS_cl
k, Sync, V
a
l,
E
rr
T
S
_P
a
ra
llel In[0-7]l
CVBS
LCD Module
(120Hz)
MST7323
FRC IC
LVDS
Buffer
CE6355
Intel Demod.
Serial Flash
SCL, SDA
XC5000
Tuner
Digital AMP
NTP3100L
I2S
Saturn6Saturn6
Component 1
Y Pb
Pr
CVBS
Y Pb
Pr
RGB/H/
V
Component 2
A
V 1
AV 2
(2M
bit)
Phone (f
or
RGB)
RGB/H/
V
EEPROM
RGB
Audio L/R
TLV320AIC1106
PCM CODEC
B/T HP
L/R
OUT
B/T
D
M/DP
PCM
PCMSYNC
MCLK
Jack Board
D
igital Audio
(O
ptic)
Audio
L/R
SPDIF
TEA6420
Audio Switch
LBMS-2C66B4
B/T Module
B/T
DM/D
P
CM321
2
Senso
r
SCL, SDA_3.3V
DDR2
(1Gbit)
NAND Flash
(512Mbit)
RS-232C (Ct
rl
./SVC)
DDR_Data[0:15],
DQS, DM Ö
MAX3232
RS232 IC
Data [0
Ö
7]
Addr[0Ö1],
CS
Ö
RX/T
X
R
X/T
X
USB D
P/
D
M
S
e
ria
l
Fl
as
h
(32Mbit)
SPI
DDR2
Qimo
nda /
Hynix
Addr.
[ ],
ctrl.
da
ta
USB2.0
MIC2019
O.C. Protector
+5V
+5V
HDMI 1
5V_HDMI
1
, HPD1,
DDC
SCL/
SDA, CLK,
DATA
CLK, DATA
a
DDR2 (512Mbit)
Qimo
nda /
Hynix
DDR_Data[0:15],
DQS, DM Ö
Addr.
[ ],
ctrl.
da
ta
SCL,
SDA
_
3.3V
IO Expander
EEPROM
(512K)
SCL, SDA_3.3V
Auto
Link
TDA9996
4x1
HDMI Switch
HDMI 2
HDMI 3
HDMI 4
5V_HDMI
2
, HPD2,
DDC
SCL/
SDA, CLK,
DATA
5V_HDMI
3
, HPD3,
DDC
SCL/
SDA, CLK,
DATA
5V_HDMI
4
, HPD4,
DDC
SCL/
SDA, CLK,
DATA
SCL, SDA
Main Board
- 15 -
LG Electronics. Inc. All right reserved.
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
300
200
LV
1
LV
2
120
310
510
580
830
530
804
550
801
800
803
802
540
807
520
910
805
400
900
806
122
521
810
200T
200N
A2
A10
500
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[5]
PCM_A[3]
PCM_A[0]
PCM_A[6]
PCM_A[7]
PCM_A[4]
PCM_A[2]
PCM_A[1]
ISP_TXD
EEPROM_SDA
001:I20;001:Y14;006:AC25
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
+3.3V
+3.3V
+3.3V
SPI_DI
/PF_CE0
IC103
W25X32VSSIG
SERIAL-FLASH-S6
3
WP
2
DO
4
GND
1
CS
5
DIO
6
CLK
7
HOLD
8
VCC
SPI_CS
+3.3V
+3.3V
+3.3V
MEMC_SDA
MEMC_SCL
Flash_WP_1
R184
22
R185
22
R248
1M
1M
R224
0
AR102
22
AR103
22
/PF_CE0
001:C4
/PF_CE1
001:D6
/PF_OE
001:C4
/PF_WE
001:D7
PF_WP
001:A7
PF_ALE
001:D6
/F_RB
001:C3
AR100
22
AR101
22
/F_RB
/PF_OE
/PF_WE
/PF_CE1
PF_ALE
PF_WP
001:X13
PCM_A[0-7]
SPI_CS
SPI_CK
SPI_CK
SPI_DO
R100
0
SPI_DO
SPI_DI
001:G12
IR
005:C15
+3.3V_ST
EDID_WP
004:AB20;006:AK7;006:AN3;006:AN12;006:AN17
AMP_RST
007:J6
ERROR_OUT
008:M14
KEY2
005:G9
KEY1
005:G8
R217
100
USB_CTL
004:AL11
PWM0
C104
0.1uF
C106
0.1uF
C103
0.1uF
R203
33
R204
33
R126
1K
OPT
R104
10K
R105
10K
R129
3.9K
R221
33
R222
33
R223
33
R108
33
R120
4.7K
+3.3V
EEPROM_SDA
001:I20;001:M13;006:AC25
R123
1K
R125
1K
L102
EEPROM_SCL 001:I21;001:Y13;006:AC25
INV_CTL
008:M12
Flash_WP_1
PANEL_CTL
008:AE6
DBG_RX
POWER_ON/OFF1
USB_OCD
004:AO12
EEPROM_SCL
001:I21;001:M12;006:AC25
ISP_RXD
DSUB_DET
AV1_DET
004:M6
R102
0
X100
12MHz
12MHz
POWER_DET
R183
0
R244
100
R241
100
R232
100
R242
100
R234
100
R254
100
R252
10K
R226
0
R238
100
R246
100
SIDE_USB_DM004:AL13
R249
15K
OPT
R251
15K
15K
OPT
SIDE_USB_DP004:AL14
R219
100
OPC_EN
009:AH20
PWM_DIM
008:M16;009:AH19
PWM0
A_DIM
008:F11
PWM1
IC105
M24512-WMW6
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
C100
0.1uF
0.1uF
R137
0
DBG_TX
DBG_RX
R186
22
R187
22
LVDS_SEL
R250
4.7K
OPT
+3.3V
C105
10uF 6.3V
POWER_DET
LED_ON
L103
+5V_GENERAL
SDA_SUB/AMP
+3.3V
SCL_SUB/AMP
FE_TUNER_SDA
R127
1.2K
EEPROM_SDA
MEMC_SCL
EEPROM_SCL
R135
4.7K
R130
1.2K
MEMC_SDA
R136
4.7K
C111
20pF
20pF
50V
C112
20pF
20pF
50V
PCM_D[5]
PCM_D[6]
PCM_A[0-7]
001:M2
+3.3V
R159
1K
PWM1
R152
1K
OPT
PWM0
R160
1K
R151
1K
OPT
MODEL_OPT_2
R157
OPT
R149
OPT
+3.3V
MODEL_OPT_0
MODEL_OPT_3
MODEL_OPT_1
MODEL_OPT_4
R154
OPT
R147
OPT
MEMC_RESET
R138
100
R140
0
R144
OPT
HDMI_SEL2
MODEL_OPT_4
001:Q20
MODEL_OPT_2
001:Q19
MODEL_OPT_0
001:Q18
COMP1_DET
COMP2_DET
AV2_DET
R181
100
OPT
R106
1K
1K
OPT
5V_HDMI_2
5V_HDMI_1
5V_HDMI_4
PCM_A[11]
R169
0
PCM_D[6]
+3.3V
R168
0
R174
0
R107
10K
R124
10K
10K
PCM_D[5]
R121
1K
PCM_A[11]
001:X8
R134
22
HDMI_SEL1
/FE_RESET
FE_TS_DATA_CLK
011:AG4
FE_TS_VAL
011:AH4
FE_TS_SYN
011:AI4
R176
0
OPT
FE_TS_SERIAL
011:AH4
FE_TUNER_SCL
+5V_GENERAL
R256
0
R255
0
/DEMOD_RESET
R258
0
R110
0
R111
0
R119
0
R118
0
SB_MUTE
R260
0
R163
0
R164
0
R166 0
DBG_TX
001:Y15;004:AF24
R243
100
R158
0
0
+5V_ST
R173 100
C102
10uF
6.3V
C101
4.7uF
10V
Q101
2SC3052
2SC3052
E
B
C
R165
0
Q102
2SC3052
2SC3052
E
B
C
S6_Reset
R171
100
POWER_ON_DELAY
+3.3V_ST
R172
10K
+3.3V_ST
OPT
1
2
4
3
S6_Reset
Q1002
2SC3052
2SC3052
12V_DIP_DET
E
B
C
R114
1K
12V_DIP_DET
R142
0
R150
30K
OPT
+3.3V_ST
+24V
R131
10K
R132
OPT
POWER_DET
001:V19;001:AL11
+12V
R115
2.2K
2.2K
12V_DIP_DET
+5V_GENERAL
R112
1K
12V_DIP_DET
Q1001
2SC3052
2SC3052
12V_DIP_DET
E
B
C
R139
OPT
PWM1
PWM2
PWM2
R175
100
R177
0
HDMI_EQ_SEL
R178
100
C110
1uF
OPT
BIT_SEL
009:AH21
R182
100
R155
100
NTP_MUTE
007:W13
R117
2.2K
R116
2.2K
MODEL_OPT_1
001:Q19
MODEL_OPT_3
001:Q20
IC104
MAX810RTR
1
GND
3
VCC
2
RESET
IC101
NCP803SN293
1
GND
3
VCC
2
RESET
FE_TUNER_SCL
FE_TUNER_SDA
SCL_SUB/AMP
SDA_SUB/AMP
R
1
4
5
1
0
K
OPT
R188
0
OPT
R189
100
HPD3
C109
4.7uF
OPT
R148
R146
R156
R143
R153
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
R179
10K
+3.3V_ST
R193
100
R194
100
R195
100
R191
100
R192
100
R190
100
R161
30K
1%
24V_POWER_DET
R162
6.2K
6.2K
1%
12V_24V_DET
R167
4.7K
R170
10K
R162-*1
30K
1%
5V_DET
R133
100
R215
100
R216
100
+12V
R141
15K
1%
12V_POWER_DET
+5V_GENERAL
R196
15K
1%
5V_POWER_DET
R101
12K1%
12V_DIP_DET
R103
1.1K
1.1K
12V_DIP_DET
R113
10K
12V_DIP_DET
R128
22
12V_DIP_DET
R180
100
R122
1.2K
R109
1.2K
BT_DM
R197
0
BT_DP
R198
0
BT_ON/OFF
A_DIM
008:F11
R199
22
OPT
EEPROM
Serial FLASH MEMORYfor BOOT
NAND FLASH MEMORY
1 11
MAIN_1
EAX61110501(9)[SL80]
/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
IC105: EAN43352801(ATMEL SHRINK)
2009.06.22
5V Tolerance
5V Tolerance
Interrupt for ISP Wake up in STB Mode
5V Tolerance
0IMMRMP008A(MICROCHIP)
I2C
MCU BOOT STRAP
10 : BOOT 51
11 : BOOT RISC
11 : BOOT RISC
MODEL OPTION
LCD
FRC O
H
OPT_0
PDP
L
OPT_1
FRC X
Serial Only
POWER DETECT
5V Tolerance
5V Tolerance
Active High
Active High
OPT_2
OPT_3
Blinking LED
Moving LED
FHD
HD
L
H
H
H
Pull_up exist in FRC Block
DIMMING
VOLTAGE DETECTOR
*Mstar reset:Active high reset
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