DOWNLOAD LG 26LV2500-JA (CHASSIS:LE13A) Service Manual ↓ Size: 8.81 MB | Pages: 47 in PDF or view online for FREE

Model
26LV2500-JA (CHASSIS:LE13A)
Pages
47
Size
8.81 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
26lv2500-ja-chassis-le13a.pdf
Date
PREV: LG 26LV2500-DG (CHASSIS:LT01P) Service Manual

LG 26LV2500-JA (CHASSIS:LE13A) Service Manual ▷ View online

THERMAL
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.
10/07/01
FRONTEND
120  130
BCM-JAPAN
SIGN51922
SIGN51987
SIGN52002
C1294
0.1uF
C1236
0.1uF
16V
+5V_TU
+D3.3V_DEMOD
SCL_PSK
R1223
1K
OFDM2_DIF_P
C1263
22uF
16V
+D1.2V_DEMOD
OFDM_ATN
R1213
4.7K
C1258
1uF
10V
R1255
OPT
C1238
0.1uF 16V
L1207
BLM18PG121SN1D
OFDM1_IF_AGC
PSK2_RF_AGC
PSK1_I
C1284
0.1uF
OFDM1_DIF_N
R1215
100
R1250
OPT
R1203
1K
C1295
0.1uF
C1283
0.1uF
+5V_TU
C1318
0.1uF
50V
C1206
0.33uF
16V
OFDM1_DIF_P
C1246
1uF
10V
PSK1_Q
C1275
0.1uF
16V
C1254
1uF
10V
C1249
1uF
10V
C1291
0.1uF
C1288
0.1uF
LNB_POWER_CONTROL
PSK2_I
C1277
0.1uF
L1201
BLM18PG121SN1D
C1208
10uF
10V
R1246
1K
C1203
0.33uF
16V
C1310
0.1uF
L1212
BLM18PG121SN1D
C1289
0.1uF
C1204
0.33uF
16V
C1266
0.1uF 16V
OFDM1_IF_AGC
R1259
120
C1251
1uF
10V
C1240
1500pF
50V
SCL_OFDM
C1305
0.1uF
R1211
22
C1257
1uF
10V
OFDM1_DIF_P
+5V_TU
C1227
10uF
35V
C1281
0.1uF
+D3.3V_DEMOD
C1243
1uF
10V
R1247
OPT
R1217
100
L1203
BLM18PG121SN1D
C1235
0.1uF
16V
L1206
BLM18PG121SN1D
+D3.3V_DEMOD
R1210
22
R1202
1K
+3.3V_NORMAL
+A1.2V_DEMOD
R1256
0
C1269
22uF
16V
OPT
L1200
C1311
0.1uF
PSK2_Q
R1212
22
R1254
OPT
R1258
OPT
R1242
100
+D1.2V_DEMOD
OFDM1_DIF_N
PSK1_RF_AGC
PSK1_SYNC
C1286
2.2uF
16V
C1260
0.1uF
16V
+A3.3V_DEMOD
+16V_LNB
+A1.2V_DEMOD
C1256
1uF
10V
C1309
0.1uF
PSK2_SCLK
C1312
0.1uF
PSK1_RF_AGC
L1211
BLM18PG121SN1D
C1271
10pF
50V
+3.3V_TU
C1306
0.1uF
R1236
12K
+5V_TU
R1249
3.3K
R1252
3.3K
C1239
0.1uF 16V
OFDM2_DIF_N
C1316
22uF
10V
IC1203
AP1117EG-13 
ADJ/GND
OUT
IN
SDA_PSK
OFDM2_SYNC
L1216
BLM18PG121SN1D
R1209
22
C1233
0.1uF
16V
C1297
0.1uF
C1221
10uF
10V
R1244
100
L1215
BLM18PG121SN1D
R1273
1
R1260
3.3K
+3.3V_TU
C1219
10uF
10V
C1255
1uF
10V
C1276
0.1uF
C1217
10uF
10V
+3.3V_TU
SCL_PSK
C1207
10uF
10V
R1245
3.3K
C1224
10uF
10V
C1280
0.1uF
OFDM2_SCLK
+3.3V_NORMAL
R1239
0
C1218
10uF
10V
C1244
1uF
10V
DEMOD_RESET
C1298
0.1uF
C1248
1uF
10V
C1253
1uF
10V
OFDM2_IF_AGC
+16V_LNB
C1299
0.1uF
R1243
100
C1292
0.1uF
C1231
0.1uF
16V
L1202
BLM18PG121SN1D
+D3.3V_DEMOD
OFDM2_SDATA
OFDM1_SCLK
OFDM1_SYNC
+D3.3V_DEMOD
R1233
12K
R1253
1K
C1285
0.1uF
C1214
10uF
10V
L1214
BLM18PG121SN1D
C1274
0.1uF
16V
PSK2_Q
SDA_PSK
C1241
1uF
10V
SCL0_3.3V
C1252
1uF
10V
SCL_OFDM
R1204
10K
Q1200
2SC3052
E
B
C
+D1.2V_DEMOD
D1202
40V
MBRM140T1G
OPT
+5V_TU
C1264
0.1uF 16V
C1287
0.1uF
C1245
1uF
10V
C1296
0.1uF
+3.3V_TU
R1222
1K
PSK1_Q
OFDM2_DIF_P
LNB_POWER_CONTROL
PSK2_I
L1213
BLM18PG121SN1D
L1205
BLM18PG121SN1D
C1220
10uF
10V
R1216
100
C1313
0.1uF
C1315
22uF
10V
C1242
1uF
10V
C1223
10uF
10V
C1205
0.33uF
16V
C1201
0.01uF
50V
L1210
BLM18PG121SN1D
PSK2_SDATA
C1215
2700pF
50V
C1308
0.1uF
C1262
22uF
16V
C1270
22uF
16V
OPT
+24V
C1216
0.1uF
16V
C1250
1uF
10V
PSK1_SCLK
SDA_OFDM
R1251
0
C1307
0.1uF
C1213
10uF
10V
+A3.3V_DEMOD
+3.3V_TU
C1226
10uF
10V
R1248
3.3K
C1261
0.1uF
16V
C1222
10uF
10V
C1232
1uF
10V
R1214
100
C1247
1uF
10V
+5V_NORMAL
C1279
0.1uF
C1278
0.1uF
+3.3V_NORMAL
22uF
C1314
SDA0_3.3V
C1225
10uF
10V
C1293
2.2uF
16V
+D3.3V_DEMOD
C1267
0.1uF 16V
L1209
BLM18PG121SN1D
C1234
1uF
10V
PSK2_SYNC
C1228
10uF
35V
C1273
0.1uF
16V
C1265
0.1uF 16V
C1290
0.1uF
L1204
BLM18PG121SN1D
OFDM2_IF_AGC
PSK1_I
PSK1_SDATA
+D1.2V_DEMOD
C1282
0.1uF
C1272
10pF
50V
PSK2_RF_AGC
OFDM1_SDATA
C1317
0.1uF
50V
C1304
0.1uF
R1257
1K
SDA_OFDM
+3.3V_TU
OFDM2_DIF_N
C1237 0.1uF
16V
C1200
10uF
35V
C1303
0.1uF
LD1203
SAM2333
OPT
A2[RD]
C
A1[GN]
R1277
330
OFDM1_LOCK
OFDM2_LOCK
LD1205
SAM2333
OPT
A2[RD]
C
A1[GN]
R1279
330
PSK1_LOCK
R1276
330
PSK2_LOCK
LD1201
SAM2333
OPT
A2[RD]
C
A1[GN]
R1274
330
Q8801
2SC3052
E
B
C
Q8803
KTA1552T
E
B
C
Q1205
KTA1552T
E
B
C
D1201
40V
MBRM140T1G
L1217
R9383
10K
1/10W
5%
+3.3V_NORMAL
LNB_SHORT_DETECT
D1200
40V
MBRM140T1G
R9395
OPT
0
R9385
4.7K
1/10W
1%
R9386
100K
1/10W
5%
C1336
10uF
25V
C1337
10uF
25V
C1202
10uF
25V
R9387
47K
1/10W
1%
LD1204
SAM2333
OPT
C
C9377
0.1uF
16V
R9391
100
1/10W
1%
+5V_TU
C9378
2200pF
50V
C1229
0.1uF
16V
R1229
100
1/10W
1%
C1230
2200pF
50V
C9379
22uF
10V
C9380
1uF
10V
R9394
47K
1/16W
5%
C1268
18pF
50V
C1259
18pF
50V
R1284
1K
OPT
R1285
1K
OPT
R1286
1K
OPT
R1287
1K
OPT
R1280
270
R1281
270
R1282
270
R1283
270
R1205
22
R1206
22
R1207
22
R1208
22
R9392
91K
1/10W
5%
R9393
91K
1/10W
5%
R9388
24K
1/10W
1%
R1226
24K
1/10W
1%
R9390
36K
1/10W
5%
R1227
36K
1/10W
5%
R1201
0
R1200
0
IC1202
TC90522XBG
AD1_IP
P14
AD1_IN
R14
AD1_QP
P13
AD1_QN
R13
AD2_IP
P12
AD2_IN
R12
AD2_QP
P11
AD2_QN
R11
RVDD
P15
RVSS
R15
AD_AVDD
N13
AD_AVSS
N12
AD_DVDD
M13
AD_DVSS
M12
JAD1_IP
R3
JAD1_IN
R2
JAD1_QP
P2
JAD1_QN
R1
JAD2_IP
P6
JAD2_IN
R6
JAD2_QP
P7
JAD2_QN
R7
JAD1_VCM
P1
JAD2_VCM
N6
JAD1_AVDD
P3
JAD1_AVSS
N3
JAD2_AVDD
M6
JAD2_AVSS
R5
JAD1_DVDD
R4
JAD1_DVSS
P4
JAD2_DVDD
N5
JAD2_DVSS
P5
PLLVDD
P10
XOVDD
P9
XI
R9
XO
R8
XOVSS
N8
XCKO
P8
PLLVSS
N9
FIL
R10
AGCCNTI1
J14
AGCCNTR1
J15
AGCCNTI2
K14
AGCCNTR2
K15
JAGCCNT1
L1
JAGCCNT2
L2
SYRSTN
B15
SCL
C15
SDA
C14
TNSCL1
L15
TNSDA1
L14
TNSCL2
M15
TNSDA2
M14
JTNSCL1
N1
JTNSDA1
N2
JTNSCL2
M1
JTNSDA2
M2
VSS_1
D4
VSS_2
D5
VSS_3
D6
VSS_4
D8
VSS_5
D9
VSS_6
D10
VSS_7
D11
VSS_8
D12
VSS_9
E4
VSS_10
E12
VSS_11
G12
VSS_12
H4
VSS_13
H12
VSS_14
J4
VSS_15
K4
VSS_16
L4
VSS_17
L12
VSS_18
M4
VSS_19
M7
VSS_20
M10
VSS_21
N4
VDDC_1
C8
VDDC_2
C12
VDDC_3
D7
VDDC_4
E3
VDDC_5
F13
VDDC_6
G4
VDDC_7
J3
VDDC_8
J12
VDDC_9
L13
VDDC_10
M3
VDDC_11
M5
VDDC_12
N7
VDDC_13
N10
DR1VDD_1
C5
DR1VDD_2
C10
DR1VDD_3
E13
DR1VDD_4
F3
DR1VDD_5
G3
DR1VDD_6
H13
SRCK
A9
SRDT
B9
RSCKO
D15
SBYTE
A10
PBVAL
B10
RSEORF
D14
STSFLG1
A11
STSFLG0
B11
SLOCK
A12
SLPEN
B13
RLOCK
B12
RERR
A13
RSOUT7
E14
RSOUT6
E15
RSOUT5
F14
RSOUT4
F15
RSOUT3
G14
RSOUT2
G15
RSOUT1
H14
RSOUT0
H15
JSRCK
A4
JSRDT
B4
JRSCKO
C1
JSBYTE
A5
JPBVAL
B5
JRSEORF
C2
JSTSFLG1
A6
JSTSFLG0
B6
JLOCK
A8
JRLOCKH
A7
JRLOCKL
B7
JRSOUT7
D2
JRSOUT6
D1
JRSOUT5
E2
JRSOUT4
E1
JRSOUT3
F2
JRSOUT2
F1
JRSOUT1
G2
JRSOUT0
G1
JPORT
B8
VPGM
M8
DTCLK
K1
TSMD1
K13
TSMD0
J13
CKI
K2
EXTCK
C7
S_INFO1
N15
S_INFO2
N14
OEN
C13
JOEN
C3
XSEL2
B3
XSEL1
J2
XSEL0
H2
SLADRS1
J1
SLADRS0
H1
TRST
B2
TCK
B1
TMS
A3
TDI
A2
TDO
A14
MDO
A1
FSO
A15
NC[INDEX]
E5
NC_1
M9
NC_2
M11
NC_3
N11
XCKOSL
B14
DTMB
K3
VDDS_1
C4
VDDS_2
C6
VDDS_3
C9
VDDS_4
C11
VDDS_5
D3
VDDS_6
D13
VDDS_7
G13
VDDS_8
H3
VDDS_9
K12
VDDS_10
L3
DR3VDD_1
F4
DR3VDD_2
F12
R9384
1W
5%
1
X1200
16MHz
R1220
1.2K
R1225
1.2K
C1210
27pF
50V
C1212
27pF
50V
R1224
1.2K
R1219
1.2K
C1211
27pF
50V
C1209
27pF
50V
IC9304
BD7542SF
3
IN1+
2
IN1-
4
VSS
1
OUT1
5
IN2+
6
IN2-
7
OUT2
8
VDD
C1340
22uF
10V
C1338
22uF
10V
C1339
22uF
10V
C1341
100pF
50V
sattellite sensitivity
C1342
100pF
50V
sattellite sensitivity
C1343
100pF
50V
sattellite sensitivity
C1344
100pF
50V
sattellite sensitivity
C1345
100pF
50V
sattellite sensitivity
D3.3V
R1228
47K
OPT
C1346
1uF
OPT
LNB_INIT_CONTROL
R9389
2.2K
OPT
TU1200
HST-J222DVT
1
ODU
2
+B1-1[5V]
3
+B2-1[3.3V]
4
AGC1
5
Q_OUT1
6
I_OUT1
7
GND_1
11
+B1-2[5V]
12
+B2-2[3.3V]
13
AGC2
14
Q_OUT2
15
I_OUT2
16
SCL_1
17
SDA_1
18
GND_2
25
SDA_2
26
SCL_2
27
OUT1-1
28
OUT2-1
29
NC_1
30
+B5[3.3V]
31
NC_2
32
IF_AGC-1
33
OUT-1-3
34
OUT-2-3
35
NC_3
36
+B7[3.3V]
38
IF_AGC-3
39
ATT
40
+B9[5V]
41
GND
42
SHIELD
L1208
22UH
IC1200
MP2403DN-LF-Z 
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
9
[EP]GND
R1218
10K
R1221
180K
XSEL[2:0]=5
LOW IF : 4.063
16MHz XTAL
MAX 400mA
I2C ADDRSS : 001 + SLADRS1 + SLADRS0 + 10 : 0FDM2 0X34
<A-GROUP> PKT1
I2C ADDRSS : 001 + SLADRS1 + SLADRS0 + 00 : 0FDM1 0X30
R2
<D-GROUP> PSK3
<B-GROUP> PKT0
Vout=(1+R1/R2)*1.222
BCS : MAIN IQ = JAD2_IQ
      SUB  IQ = JAD1_IQ
      
      I2C = JTNSDA2, JTNSCL2
Because TC90532(single) uses these ports.
I2C ADDRSS : 001 + SLADRS1 + SLADRS0 + 11 :  PSK2 0X36
23 mA
146+104mA
R1
753mA
I2C ADDRSS : 001 + SLADRS1 + SLADRS0 + 01 :  PSK1 0X32
VOUT = VREF *(1+R2/R1)
<C-GROUP> PSK2
17 mA
LNB POWER
D-sub RGB
HDMI 1
NAND Flash
(4Gb)
Digital Audio (Optic)
USB /DVR Ready
RS-232C (Ctrl./SVC)
I2C
NVRAM
RGB/H/V
DDR_D0[0:15], DQS, DM …
Addr.[ 0:13], ctrl. Data
MAX3232
BCM3558
Main SOC
400Mhz
32bit 
MIPS Dual
Data [0 … 7]
AV/D5 Audio
Y Pb Pr, L/R
CVBS, L/R, D5 L/R
D5(1080P) 
Audio L/R
Audio L/R (for RGB)
HDMI 2
SPDIF
DP/DM/ +5V
RX/TX
JACK PACK
JACK PACK
at REAR
at REAR
JACK PACK
JACK PACK
at SIDE
at SIDE
SCL, SDA_3.3V
ISDB-T/S
1400Yen
(HST-J222DVT)
Hitachi Tuner
TC90522XBG
TOSHIBA DEMOD
Ethernet Connect
DDR2 (1Gbit)
DDR2 (1Gbit)
DDR2 (1Gbit)
DDR2 (1Gbit)
DDR_D1[0:15], DQS, DM …
X-tal
54MHz
LVDS 60Hz
USB
MICOM
(uPD78F0514)
SCL, SDA_3.3V
Block Diagram
Block Diagram
(LE13A)
(LE13A)
LGE Confidential
X-tal
32.768KHz
Digital AMP
NTP7100
HP Phone JACK
HP DIFF L/R
PSK1 I/Q
PSK2 I/Q
OFDM1 N/P
OFDM2 N/P
MP2403DN
SCL/SDA, OFDM/PSK
PSK2 CLK,DATA,SYNC
PSK1 CLK,DATA,SYNC
OFDM1 CLK,DATA,SYNC
OFDM2 CLK,DATA,SYNC
I2C_0 SCL/SDA
PSK, OFDM AGC
24V
LNB 16V
5V
3.3V
3.3V 1.2V
RESET
TPA6132
AMP
L/R
3.3V
3.5V
X-tal
16Mhz
31p
B-CAS Slot
TDA8024
B-CAS
IC
RST,SW
I/O, CLK
RST,VCC,RES
I/O, CLK
3.3V 5V
3.3V
1.2V
2.5V
3.3V
HDMI1_RX, CLK, SCL/SDA
HDMI2_RX, CLK, SCL/SDA
X-tal
10MHz
24V
3.3V 1.8V
3.5V
D-sub RGB
HDMI 1
NAND Flash
(4Gb)
Digital Audio (Optic)
USB /DVR Ready
RS-232C (Ctrl./SVC)
I2C
NVRAM
RGB/H/V
DDR_D0[0:15], DQS, DM …
Addr.[ 0:13], ctrl. Data
MAX3232
BCM3558
Main SOC
400Mhz
32bit 
MIPS Dual
Data [0 … 7]
AV/D5 Audio
Y Pb Pr, L/R
CVBS, L/R, D5 L/R
D5(1080P) 
Audio L/R
Audio L/R (for RGB)
HDMI 2
SPDIF
DP/DM/ +5V
RX/TX
JACK PACK
JACK PACK
at REAR
at REAR
JACK PACK
JACK PACK
at SIDE
at SIDE
SCL, SDA_3.3V
ISDB-T/S
1400Yen
(HST-J222DVT)
Hitachi Tuner
TC90522XBG
TOSHIBA DEMOD
Ethernet Connect
DDR2 (1Gbit)
DDR2 (1Gbit)
DDR2 (1Gbit)
DDR2 (1Gbit)
DDR_D1[0:15], DQS, DM …
X-tal
54MHz
LVDS 60Hz
USB
MICOM
(uPD78F0514)
SCL, SDA_3.3V
Block Diagram
Block Diagram
(LE13A)
(LE13A)
LGE Confidential
X-tal
32.768KHz
Digital AMP
NTP7100
HP Phone JACK
HP DIFF L/R
PSK1 I/Q
PSK2 I/Q
OFDM1 N/P
OFDM2 N/P
MP2403DN
SCL/SDA, OFDM/PSK
PSK2 CLK,DATA,SYNC
PSK1 CLK,DATA,SYNC
OFDM1 CLK,DATA,SYNC
OFDM2 CLK,DATA,SYNC
I2C_0 SCL/SDA
PSK, OFDM AGC
24V
LNB 16V
5V
3.3V
3.3V 1.2V
RESET
TPA6132
AMP
L/R
3.3V
3.5V
X-tal
16Mhz
31p
B-CAS Slot
TDA8024
B-CAS
IC
RST,SW
I/O, CLK
RST,VCC,RES
I/O, CLK
3.3V 5V
3.3V
1.2V
2.5V
3.3V
HDMI1_RX, CLK, SCL/SDA
HDMI2_RX, CLK, SCL/SDA
X-tal
10MHz
24V
3.3V 1.8V
3.5V
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