LG 22LH250C (CHASSIS:LD91Z) 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.
+5V_GENERAL
+3.3V_TUNER
+5V_GENERAL
FE_BOOSTER_CTL
/FE_RESET
FE_TS_DATA[0-7],FE_TS_CLK,FE_TS_VAL,FE_TS_SYN
FE_DEMOD_SDA
+1.2V_TUNER
2SC3052
Q1200
E
B
C
FE_AGC_SPEED_CTL
FE_TS_ERR
2SC3052
Q1203
E
B
C
+3.3V_TUNER
FE_TUNER_SDA
FE_SIF
+5V_GENERAL
FE_DEMOD_SCL
FE_TUNER_SCL
FE_TS_VAL
NL17SZ08DFT2G
IC1201
3
2
4
1
5
FE_TS_ERR
+3.3V_TUNER
FE_TS_VAL_ERR
GND
FE_TS_VAL
FE_VMAIN
+5V_GENERAL
MLB-201209-0120P-N2
L1202
MLB-201209-0120P-N2
L1201
MLB-201209-0120P-N2
L1204
47uF
16V
16V
C1212
0
R1238
200
R1241
200
R1240
1K
OPT
R1239
0
R1205
47
R1208
47
R1207
47pF
50V
50V
C1205
OPT
47pF
50V
50V
C1206
OPT
0 . 1 u F
16V
C1220
0 . 1 u F
16V
16V
C1215
ISA1530AC1
Q1201
E
B
C
ISA1530AC1
Q1205
E
B
C
ISA1530AC1
Q1202
E
B
C
68uF
10V
10V
C1209
0
R1223
0 . 0 1 u F
25V
25V
C1222
0 . 1 u F
16V
16V
C1208
OPT
0 . 1 u F
16V
16V
C1210
0 . 1 u F
16V
C1219
0 . 1 u F
16V
16V
C1214
0 . 1 u F
16V
C1227
0.1uF
16V
C1200
0 . 1 u F
16V
C1221
10
R1229
100
R1224
100K
R1225
100pF
50V
C1216
100pF
50V
50V
C1207
10K
R1209
10K
R1231
10K
R1232
2.2K
R1230
33
R1222
33
R1221
4.7K
R1226
47
R1213
47
R1218
47
R1211
47
R1210
47
R1219
47
R1216
47
R1220
47
R1217
47
R1214
47
R1212
47
R1215
47
R1245
470
R1227
47pF
50V
50V
C1217
47pF
50V
50V
C1218
82
R1228
TDFW-G235D
TUNER
TU1200
1
ANT[5V]
2
BB[CTR]
3
GND_1
4
+B[5V]
5
NC_1
6
RF_AGC
7
TP[VT]
8
NC_2
9
GND_2
10
SDA_T
11
SCL_T
12
AIF_1
13
NC_3
14
GND
15
VIDEO
16
NC_4
17
S I F
18
SDA
19
SCL
20
RST
21
3.3V
22
1.2V
23
ERR
24
MCL
25
D7
26
D6
27
D5
28
D4
29
D3
30
D2
31
D1
35
SHIELD
32
D0
33
VAL
34
SYNC
FE_TS_DATA[5]
FE_TS_DATA[6]
FE_TS_DATA[1]
FE_TS_DATA[0]
FE_TS_DATA[3]
FE_TS_CLK
FE_TS_DATA[2]
FE_TS_DATA[4]
FE_TS_SYN
FE_TS_DATA[7]
FE_TS_VAL
Tuner PLL : 0xC2
Analog Tuner : 0x86
Digital Tuner : 0x1E
1 0 1 1
TUNER
OPTION : RF AGC
DVB-CI DETECT
DVB-T/C : 1.2V(MICRONAS demod)
DVB-T : 1.8V(INTEL demod)
COMMERCIAL_LITE LH250
EAX61353501
2 0 0 9 . 0 6 . 0 9
UNER
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.
LVB_3M
LVB_0M
LVB_1P
LVB_2M
LVB_CKP
LVB_CKM
LVB_4P
LVB_0P
LVB_2P
PANEL_POWER
LVB_1M
LVB_4M
LVB_3P
LVA_CKM
LVA_3P
LVA_0P
LVA_4M
LVA_2M
LVA_0M
LVA_1M
LVA_2P
LVA_1P
LVA_3M
LVA_CKP
LVA_4P
MEMC_RESET
MEMC_SDA
0 0 1 : F 2 0
MEMC_SCL
0 0 1 : F 2 1
3.3K
OPT
R1370
0
LVDS_SEL_GND
R1379
0
BIT_SEL_GND(8bit)
R1371
22
R1366
22
R1365
LVDS_SEL
22
OPT
R1367
0
OPT
R1373
BIT_SEL
220uF
16V
C1303
OPT
LVB_CKP
LVB_CKM
LVB_1M
LVB_0M
LVB_3M
LVB_2M
LVB_0P
LVB_3P
LVB_2P
LVB_1P
LVA_2P
LVA_3P
LVA_2M
LVA_3M
LVA_CKP
LVA_CKM
LVA_1M
LVA_1P
LVA_0M
LVA_0P
+3.3V
OPC_EN
OPC_OUT
008:K14
PWM_DIM
+3.3V
+3.3V
BLM18PG121SN1D
L1300
0 . 1 u F
16V
C1300
OPT
R1313
OPT
R1315
OPT
R1312
OPT
R1314
1000pF
50V
C1301
TF05-51S
P1301
FHD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
FF10001-30
LVDS_HD_19~22
P1300
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
FF10001-30
LVDS_HD_26~42
P1302
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3.3K
LVDS_SEL_PULLUP
R1378
510
OPC
OPC
R1372
LVA_CKP
LVB_CKP
LVB_CKM
LVB_0M
LVA_CKM
LVB_1P
LVA_3P
LVB_0P
LVA_0P
LVB_2P
LVA_2M
LVB_1M
LVA_0M
LVA_1M
LVA_2P
LVB_3P
LVA_1P
LVA_3M
LVB_2M
LVB_3M
0
R1612
EXCEPT_22LU50
0
R1613
EXCEPT_22LU50
FF10001-30
LVDS_MNT_HD_19~22
P1306
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
AMOTECH
5.6V
ZD1305
IR
AMOTECH
5.6V
ZD1300
19~22/26LH2
AMOTECH
5.6V
ZD1302
+5V_ST
BLM18PG121SN1D
L1302
19~22/26LH2
BLM18PG121SN1D
L1303
0 . 1 u F
C1307
47K
R1303
2SC3052
Q1300
E
B
C
AMOTECH
5.6V
ZD1304
100
R1305
BLM18PG121SN1D
L1305
100
R1318
0 . 1 u F
16V
C1314
47K
R1304
12507WR-03L
19~22/26LH2
P1303
1
KEY1
2
KEY2
3
GND
4
1000pF
50V
C1312
KEY2
12507WS-08L
P1305
1
KEY1
2
KEY2
3
GND
4
5V_ST
5
GND
6
IR
7
LED_B
8
LED_R
9
.
+5V_ST
BLM18PG121SN1D
L1301
10K
R1302
AMOTECH
5.6V
ZD1301
19~22/26LH2
+3.3V_ST
2SC3052
Q1301
E
B
C
4.7K
R1319
0 . 1 u F
16V
16V
C1308
19~22/26LH2
BLM18PG121SN1D
L1304
19~22/26LH2
BLM18PG121SN1D
L1307
BLM18PG121SN1D
L1306
1000pF
50V
C1315
IR_OUT
AMOTECH
5.6V
ZD1303
100pF
50V
C1309
0 . 1 u F
C1305
WARM_LED_ON/LED_W
47K
R1301
0 . 1 u F
16V
C1306
19~22/26LH2
+5V_ST
1000pF
50V
C1313
LED_ON/LED_R
22
R1300
KEY1
4.7K
R1320
AMOTECH
5.6V
ZD1306
100
R1317
4.7K
R1142
IR_OUT_HDMI1
0 0 6 : J 7
IR_OUT
011:AC13
IR_OUT_HDMI2
006:X7
+5V_ST
0 . 1 u F
C1137
22
R1130
IR_OUT_RS232C
004:Y18
74AC08SJ
IC1100
3
O0
2
B0
4
A1
1
A0
6
O1
5
B1
7
GND
8
O3
9
B3
10
A3
11
O2
12
B2
13
A2
14
VCC
IROUT_CTRL
0 0 1 : A I 1 5
2SC3052
Q1100
E
B
C
10K
R1119
10K
R1115
+5V_ST
10K
R1116
1 1 1 1
MODULE&CTL
Module
V4 OPTION
OPC_OUTPUT
OPC_EABLE
E x t e r n a l V B R
S m a l l
X
8BIT
R1370
10BIT
X
R1371
0
R1378
HD
O
FHD
R1379
X
O
X
X
IR & LED
CONTROL
Z e n e r D i o d e i s
c l o s e t o w a f e r
IR_OUT
COMMERCIAL_LITE LH250
EAX61353501
2 0 0 9 . 0 6 . 0 9
RGB
COMPONENT
F-SCART
BUF_TS_CLK/ERR/SYN/DATA[0]
DDR2 SDRAM
(1Gb)
IC300
NAND Flash
HYNIX
IC102
USB
Digital amp
(NTP3100L)
IC701
COMP_Y/Pb/Pr
SC1_CVBS_IN
DSUB_ R/G/B
I2S
Tune
r
(T
DFW
-G23
5
D1)
T
U
100
0
LCD Panel
-19/22/26/32/42LH250C ( Only 42inch FHD )
74LV
C541A
Bu
ffer
IC502
CI Slo
t
(P
50
0)
0)
74LCX244
Bu
ffer
IC501
PCM_A[0:7]
FE_VMAIN
PCM_A[0:7]
SDDR_D[0:15]
DDR2 SDRAM
(512Mb)
IC301
TDDR_D[0:15]
SDDR_A[0:12]
Mstar S6
LGE3369A
(DVIX)
(IC100)
MP6211DH
USB Power
IC402
USB Power
FE_TS_DATA[0:7] Æ CI_MDI[0:7]
SC1_R/G/B
DTV/TV_VOUT
SC1_L/R_IN,
FE_AM_AUDIO,COMP_L/R_IN,
PC_L/R_IN
TDDR_A[0:12]
TPA6110A
IC700
Head
Phone
RS-232C
MAX3232CDR
IC403
SPDIF
SPDIF_OUT
DSUB_H/VSYNC
HP_L/ROUT
L/R
CI_TS_DATA[0:7]
PCM_D[0:7] Æ CI_DATA[0:7]
CI_ADDR[0:7]
AUDIO IN
DGB_TX/RX
HPD1/2, HDMI_CEC
TMDS[0:7] ( Data, Clock (+/-))
USB_DM/DP
EEPROM
AT24C512
(IC105)
EEPROM
AT24C512
(HDCP)IC107
I2C
LVDS
Serial Flash
IC104
For Triton
Serial Flash
IC103
For Boot
KIA7027
(IC101)
Voltage Detector
74LX1G14C
(IC108)
Schmitt Trigger
Reset
5V_HDMI_1/2
HDMI 1/2
Block diagram
Main Block
External
Speaker
Volume
Control
RJ45
Audio L/R
Control + / -
Control 0/1/2/3
74LX1G14C
(IC904)
Buzzer
(BU900)
PWM
LED Clock
B/D
PIC16F819
(IC901)
I2C
KEY1/2
LED_G/R & IR
IR & Control
B/D
IR_OUT
(To RS232 / HDMI)
TPA3124
IC702
74AC08
IC1100
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