LG 26LD320H / 26LD322H (CHASSIS:LD01Z) Service Manual ▷ View 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.
AT24C02BN-10SU-1.8
IC801
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
4.7K
R885
5V_HDMI_1
J P 8 0 1
CK+_HDMI2
2SC3052
Q802
E
B
C
D801
D1+_HDMI2
D2+_HDMI1
5V_HDMI_1
DDC_SCL_1
1K
R895
10K
R873
0 . 1 u F
16V
16V
C801
22
R805
DDC_SCL_1
D2+_HDMI2
D0+_HDMI2
3.3K
R801
D2-_HDMI2
5V_HDMI_2
5V_DET_HDMI_1
22
R877
DDC_SCL_2
1K
R896
HPD1
4.7K
R888
0 . 1 u F
C807
CK-_HDMI2
D2-_HDMI1
AT24C02BN-10SU-1.8
IC802
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D0+_HDMI1
D1-_HDMI2
2SC3052
Q801
E
B
C
ENKMC2838-T112
D822
D822
A1
C
A2
D0-_HDMI2
22
R875
DDC_SDA_2
DDC_SDA_2
HPD2
J P 8 0 3
4.7K
R889
5V_HDMI_2
D802
D1+_HDMI1
EDID_WP
22
R876
J P 8 0 9
3.3K
R802
ENKMC2838-T112
D821
D821
A1
C
A2
+5V_Normal
22
R806
22
R878
CK-_HDMI1
1.8K
R803
0 . 1 u F
16V
16V
C802
J P 8 0 4
D0-_HDMI1
DDC_SDA_1
J P 8 1 0
10K
R830
J P 8 0 2
+5V_Normal
22
R826
5V_DET_HDMI_2
EDID_WP
10K
R828
D1-_HDMI1
0 . 1 u F
C806
1.8K
R804
DDC_SDA_1
4.7K
R884
DDC_SCL_2
CK+_HDMI1
10K
R874
AVRL161A1R1NT
D826
OPT
GND
HDMI_CEC
CEC_REMOTE
0 . 1 u F
16V
16V
C810
GND
10K
R893
D825
0
OPT
R883
22
R825
BSS83
Q805
S
B
D
G
68K
R892
OPT
+3.5V_ST
68K
R853
GND
68K
R854
OPT
68K
OPT
OPT
R857
0
OPT
R855
0 . 1 u F
16V
16V
C805
AVRL161A1R1NT
OPT
D803
D804
10K
R856
GND
BSS83
Q806
S
B
D
G
+3.3V_Normal
0
R858
CEC_REMOTE_S7
HDMI_CEC
0
R897
0
R898
IR_OUT_HDMI1
0
R899
IR_OUT_HDMI2
HDMI_CEC
0
R890
EAG39789402
JK801
1
D2+
2
D2_GND
3
D2-
4
D1+
5
D1_GND
6
D1-
7
D0+
8
D0_GND
9
D0-
10
CK+
11
12
13
14
15
16
17
18
19
20
21
22
EAG39789402
JK802
1
D2+
2
D2_GND
3
D2-
4
D1+
5
D1_GND
6
D1-
7
D0+
8
D0_GND
9
D0-
10
CK+
11
12
13
14
15
16
17
18
19
20
21
22
HDMI
V e r . 1 . 0
$0.055
$0.253
HDMI_1
HDMI_2
$0.055
HDMI EEPROM
$0.253
For CEC
8
EAX62115503
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.
OPT
OPT
C1125
DSUB_R-
5.6V
OPT
OPT
D1116
SPDIF_OUT
2:X18
+3.3V_Normal
18pF
50V
C1127
10K
R1142
30V
D1113
15K
R1108
DSUB_G-
5.6V
D1117
30V
D1110
EDID_WP
5.6V
OPT
D1114
DSUB_G+
100pF
50V
50V
C1108
68pF
50V
50V
OPT
C1126
30V
D1111
22
R1126
OPT
DSUB_HSYNC
18pF
50V
C1128
RGB_DDC_SCL
0
R1138
15K
R1107
0
R1136
470K
R1103
PC_R_IN
2 : S 1 6
4.7K
R1140
DSUB_R+
10K
R1111
AMOTECH
5.6V
OPT
D1101
0 . 1 u F
16V
16V
C1117
OPT
470K
R1102
DSUB_B-
AT24C02BN-10SU-1.8
IC1105
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
Fiber Optic
JST1223-001
JK1103
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
0 . 1 u F
16V
C1129
4.7K
R1139
+3.3V_Normal
100pF
50V
50V
C1121
1K
R1147
OPT
OPT
C1123
RGB_DDC_SDA
DSUB_B+
DSUB_VSYNC
30V
D1109
10K
R1110
100pF
50V
C1107
AMOTECH
5.6V
OPT
D1102
OPT
OPT
C1124
68pF
50V
50V
OPT
C1122
+5V_Normal
22
R1143
ENKMC2838-T112
D1115
A1
C
A2
PC_L_IN
2 : S 1 6
NL17SZ00DFT2G
IC1104
OPT
3
GND
2
B
4
Y
1
A
5
VCC
0
R1134
DSUB_DET
30V
D1112
0
R1148
0
R1150
10K
R1146
0
R1127
0 . 1 u F
16V
16V
C1131
22
R1141
4.7K
OPT
R1152
MMBT3904-(F)
Q1103
E
B
C
HP_ROUT
2:X19
+3.5V_ST
10K
R1130
1000pF
50V
50V
C1115
OPT
SIDE_HP_MUTE
1000pF
50V
50V
C1116
OPT
+3.3V_Normal
HP_DET
1K
R1155
HP_LOUT
2:X19
MMBT3904-(F)
Q1101
E
B
C
MMBT3904-(F)
Q1102
E
B
C
10uF
16V
16V
C1119
10uF
16V
16V
C1118
MMBT3904-(F)
Q1104
E
B
C
1K
R1125
1K
R1128
75
R1133
75
R1135
75
R1137
0
R1112
0
R1113
ISA1530AC1
Q1105
E
B
C
2SC3052
Q1106
E
B
C
3.3K
R1129
PEJ024-01
JACK1101
6B
T_TERMINAL2
8
SHIELD_PLATE
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
SPG07150941-1
P1100
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
DJ-S3600LM
JK1102
1
2
3
4
5
IR_OUT_RS232C
BAP70-02
50V
D1118
100
R1156
EXT_5V
4.7K
R1158
0 . 1 u F
C1132
47K
OPT
R1160
0
R1162
0 . 1 u F
C1133
4.7K
R1163
0
R1164
+3.5V_ST
CDS3C30GTH
30V
30V
D1119
SPG07150941
P1101
1
2
3
4
5
6
7
8
9
10
JP1111
0 . 1 u F
C1134
0 . 3 3 u F
C1135
UART_RX
0
R1166
1K
R1167
EXT_12V
UART_TX
JP1112
100
R1168
+3.5V_ST
JP1113
0 . 1 u F
C1137
EAN41348201
MAX3232CDR
IC1106
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
CDS3C30GTH
30V
30V
D1120
COMMON AREA
5 . 1 5 M s t a r C i r c u i t A p p l i c a t i o n
PC AUDIO
RGB PC
SPDIF OPTIC JACK
COMMON AREA
V e r . 1 . 0
New Item Development
EARPHONE BLOCK
9
RS232C
EAX62115503
P E J 0 2 4 - 0 1
JK1302
6B T_TERMINAL2
8 SHIELD_PLATE
7B B_TERMINAL2
5 T_SPRING
4 R_SPRING
7A B_TERMINAL1
6A T_TERMINAL1
3 E_SPRING
DBG_SW
NEC_DBG_TX
0 . 1 u F
C1314
0
R1312
3.6K
R1315
+3.5V_ST
NEC_DBG_RX
0
R1326
+3.5V_ST
EXT_VOL+
3.6K
R1313
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1307
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1304
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
0 . 1 u F
C1306
0
R1311
S7_DBG_RX
4.7K
R1324
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1303
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
100
R1318
+3.5V_ST
S7_DBG_TX
+3.5V_ST
+3.5V_ST
UART_DBG_SW
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1308
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
EXT_VOL-
100
R1304
UART_RX
S7_DBG_TX
S7_DBG_RX
0 . 1 u F
C1323
100
R1338
UART_SW1
UART_TX
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1310
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1311
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
+3.5V_ST
1uF
50V
50V
C1337
0 . 4 7 u F
50V
50V
C1338
SUBAMP_MUTE
10K
R1344
EXT_L_AMP_IN
10K
R1341
0 . 1 u F
50V
C1330
SUBAMP_SD
0 . 1 u F
50V
C1329
BLM18PG121SN1D
L1305
0 . 2 2 u F
50V
50V
C1332
0 . 2 2 u F
50V
50V
C1331
0 . 1 u F
50V
50V
C1333
4.7K
R1345
4.7K
R1346
10K
R1340
OPT
EXT_OUT_L
EXT_OUT_R
1uF
50V
50V
C1336
0 . 4 7 u F
50V
50V
C1339
EXT_R_AMP_IN
TPA3124D2PWPR
IC1309
3
PVCCL_2
2
SD
4
MUTE
1
PVCCL_1
6
RIN
5
LIN
7
BYPASS
8
AGND_1
9
AGND_2
10
PVCCR_1
11
VCLAMP
12
PVCCR_2
13
PGNDR_1
14
PGNDR_2
15
ROUT
16
BSR
17
GAIN1
18
GAIN0
19
AVCC_1
20
AVCC_2
21
BSL
22
LOUT
23
PGNDL_1
24
PGNDL_2
10K
OPT
R1343
100
R1335
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.
PEJ024-01
JK1301
6B
T_TERMINAL2
8
SHIELD_PLATE
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
EXT_OUT_R
EXT_OUT_L
1uF
10V
10V
OPT
C1325
1uF
10V
10V
OPT
C1322
+12V
56K
R1306
470pF
50V
50V
C1313
4.7K
R1319
+3.5V_ST
+3.5V_ST
MP5000DQ
IC1305
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
1K
R1322
0 . 0 1 u F
50V
50V
C1304
12.4K
R1305
10K
R1325
D1301
A1
C
A2
EXT5V_CTRL
100K
OPT
R1302
MP2305DS
IC1302
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
CB3216PA501E
L1303
1K
R1317
0 . 1 u F
50V
50V
C1309
EXT12V_CTRL
43
R1320
2700pF
50V
C1308
EXT_12V
+12V
EXT_5V
10K
R1308
22uF
16V
16V
C1312
0 . 4 7 u F
25V
C1303
22uF
16V
16V
C1318
1K
R1310
0 . 1 u F
50V
50V
C1320
4.7K
R1323
22UH
L1302
EXT_PWR_DET
CB3216PA501E
L1304
22uF
16V
16V
C1319
2SC3875S(ALY)
Q1302
E
B
C
1uF
16V
16V
C1317
2SC3875S(ALY)
Q1301
E
B
C
+3.5V_ST
M41T81
IC1306
3
VBAT
2
XO
4
VSS
1
XI
5
SDA
6
SCL
7
IRQ/FT/OUT/SQW
8
VCC
4.7K
R1329
CLOCK_SCL
1K
R1321
EAW39040101
32.768KHz
X1301
22
R1328
2pF
50V
50V
C1316
2pF
50V
50V
C1315
0 . 1 u F
16V
16V
C1321
22
R1327
CLOCK_SDA
BATTERY
BA1301
1
2
NEC_RX
+3.5V_ST
100
R1342
100
R1347
0 . 1 u F
C1335
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1312
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
UART_SW2
UART_RX
MST_NEC_RX
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1313
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
NEC_TX
UART_TX
MST_NEC_TX
100
R1339
DBG_RX
DBG_TX
DBG_RX
DBG_TX
S7_TXD
S7_RXD
100
R1330
RT1P141C-T112
Q1303
Q1303
1
2
3
EXT_OUT_L
2SC3052
Q1304
2K
R1348
2K
R1349
SUBAMP_MUTE
10K
R1350
+3.5V_ST
2SC3052
Q1305
0 . 1 u F
C1342
EXT_OUT_R
+12V
0 . 1 u F
50V
C1311
PSU
THERMAL
MP4460DQ-LF-Z
IC1301
PSU
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
MBRA340T3G
D1302
PSU
1/8W
200K
1%
R1351
PSU
3 . 3 u F
50V
50V
C1301
PSU
100K
R1354
PSU
0 . 1 u F
50V
C1310
PSU
0 . 1 u F
50V
50V
C1302
PSU
+24V
1.8K
R1355
PSU
22
R1356
PSU
22UH
L1301
PSU
150pF
50V
50V
C1307
PSU
150K
R1357
PSU
22uF
25V
25V
C1305
PSU
1/16W
20K
1%
R1352
PSU
1/16W
270K
1%
R1353
PSU
1/16W
10K
1%
R1358
PSU
+12V/+15V
CB3216PA501E
L1307
LIPS
0
R1359
OPT
0
R1360
OPT
+24V
BLM18PG121SN1D
L1308
100uF
25V
C1340
100uF
25V
C1341
68uF
35V
35V
C1334
1uF
50V
50V
C1324
1uF
50V
50V
C1326
AD-9060
15uH
L1306
2S
1S
1F
2F
EXT_SPK_CONTROL/DEBUG
UART SWITCH
B 0 - A
B 1 - A
L
H
SELECTCONNECTION
EXT_SPEAKER_AMP
Commercial
2 0 0 9 . 1 0 . 0 8
EXT_SPEAKER
5V/12V EXT PowerOut
REAL TIME CLOCK
( F o r E x t e r n a l p o w e r )
DC DC CONVERTER +12V
13
EAX62115503
EXT_SPEAKER_MUTE
c l o s e t o p i n
$ 0 . 2 1
S w i t c h i n g n o i s e r e d u c i n g [ M P S r e c o m m e n d ]
270K
TCON_47_FHD_60_LAMP
1%
R643-*4
12K
1%
1%
TCON_37_FHD
R622-*2
20K
TCON_37_FHD
1%
R637-*2
150K
1%
1%
TCON_47_FHD_60_LAMP
R610-*4
270K
TCON_32_FHD
1%
R643-*1
470K
1%
1%
TCON_37_FHD
R640-*2
1K
1%
1%
TCON_32_FHD
R601-*1
150K
1%
1%
TCON_37_FHD
R643-*2
68K
1%
1%
TCON_47_FHD_60_LAMP
R636-*4
910K
1%
1%
TCON_37_FHD
R635-*2
510K
TCON_47_FHD_60_LAMP
1%
R609-*4
51K
1%
1%
TCON_32_FHD
R637-*1
150K
1%
1%
TCON_32_FHD
R610-*1
1.5K
5%
5%
TCON_37_FHD
R652-*2
24K
1%
1%
TCON_32_FHD
R641-*1
1K
1%
1%
TCON_37_FHD
R601-*2
470K
TCON_37_FHD
1%
R609-*2
1K
1%
1%
TCON_32_FHD
R652-*1
220K
TCON_47_FHD_60_LAMP
1%
R611-*4
1K
1%
1%
TCON_42_FHD_60_LAMP
R652-*4
220K
1%
1%
TCON_47_FHD_60_LAMP
R621-*4
510K
TCON_32_FHD
1%
R609-*1
22K
1%
1%
TCON_32_FHD
R620-*1
27K
1%
1%
TCON_32_FHD
R636-*1
220K
1%
1%
TCON_32_FHD
R621-*1
51K
1%
1%
TCON_47_FHD_60_LAMP
R637-*4
220K
1%
1%
TCON_37_FHD
R621-*2
91K
TCON_37_FHD
1%
R610-*2
180K
1%
1%
TCON_47_FHD_60_LAMP
R635-*4
30K
1%
1%
TCON_47_FHD_60_LAMP
R620-*4
200K
TCON_32_FHD
1%
R611-*1
56K
1%
1%
TCON_37_FHD
R641-*2
11K
1%
1%
TCON_47_FHD_60_LAMP
R622-*4
1K
1%
1%
TCON_42_FHD_60_LAMP
R602-*4
20K
1%
1%
TCON_47_FHD_60_LAMP
R641-*4
1K
1%
1%
TCON_37_FHD
R602-*2
1K
1%
1%
TCON_32_FHD
R602-*1
150K
1%
1%
TCON_32_FHD
R635-*1
47K
1%
1%
TCON_37_FHD
R620-*2
11K
1%
1%
TCON_32_FHD
R622-*1
56K
1%
1%
TCON_37_FHD
R636-*2
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.
VGH
VCOM FEED BACK
VGL
SHEET7
SHEET7
32_FHD
R611 OPEN
42_FHD_60_LAMP
VGL
VGH
VDD
SHEET7
37_FHD
VGL
VDD
47_FHD_60_LAMP
VCOM FEED BACK
VGH
R640 OPEN
HVDD
VGH
VGL
VDD
SHEET7
VCOM FEED BACK
VCOM FEED BACK
R640 OPEN
SHEET7
HVDD
HVDD
HVDD
R601 OPEN
VDD
EAX62115503
V e r . 1 . 2
T-CON Power Table
15
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