DOWNLOAD LG 47LD920 (CHASSIS:LD01I) Service Manual ↓ Size: 9.42 MB | Pages: 112 in PDF or view online for FREE

Model
47LD920 (CHASSIS:LD01I)
Pages
112
Size
9.42 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47ld920-chassis-ld01i.pdf
Date
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LG 47LD920 (CHASSIS:LD01I) 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.
1V8
1V2
C330
0.1uF
16V
READY
R309
0
C341
22uF
25V
D300
100V
1N4148W_DIODES 
READY
C302
0.1uF
50V
3V3
L301
BLM18PG121SN1D
C306
0.1uF
16V
C327
0.1uF
16V
C312
5600pF
50V
R300
100K
+12V_FORMATTER
C303
5600pF
50V
C304
22uF
16V
IC302
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
R320
62
C313
22uF
16V
R307
0.01uF
25V
L302
22UH
C309
0.47uF
25V
C308
22uF
25V
C300
22uF
25V
L304
CB3216PA501E
IC300
MP2305DS
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
C315
0.1uF
16V
R322
330
FPGA_RESET
L303
BLM18PG121SN1D
C311
0.1uF
50V
3V3
R325
9.1K
R315
1M
READY
C324
1uF
25V
IC303
BD35331F-E2 
3
VTTS
2
EN
4
VREF
1
GND
5
VDDQ
6
VCC
7
VTT_IN
8
VTT
IC305
AZ1085S-ADJTR/E1
1
ADJ/GND
2
OUTPUT
3
INPUT
DDR_VTT
/3D_FPGA_RESET
R310
5.1K
R326
10K
L308
MLB-201209-0120P-N2
R304
9.1K
C326
10uF
16V
C301
0.47uF
25V
C345
0.1uF
16V
FPGA_RESET
C332
0.1uF
16V
C322
0.1uF
50V
C336
0.1uF
16V
C333
0.1uF
16V
R321
82
IC306
KIA7029AF
FPGA_RESET
2
G
3
O
1
I
C338
0.1uF
16V
C321
22uF
16V
C343
22uF
16V
C319
22uF
16V
C325
100uF
16V
DDR_VREF0
5V_GENERAL
C344
0.1uF
16V
C340
0.1uF
16V
IC301
MP2305DS
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
L309
3.6uH
C346
0.1uF
16V
FPGA_RESET
C317
22uF
16V
READY
L305
BLM18PG121SN1D
SW300
JTP-1127WEM
FPGA_RESET
1
2
4
3
DDR_VREF1
R319
62
R323
1K
FPGA_RESET
3D_POWER_EN
C337
22uF
25V
3V3
R324
4.7K
FPGA_RESET
+12V_FORMATTER
R302
12.4K
1%
R311
100
READY
L300
22UH
R327
10K
READY
C329
0.1uF
16V
1V8
3V3
R314
10
C318
0.1uF
50V
L307
MLB-201209-0120P-N2
C331
0.1uF
16V
C335
2.2uF
10V
C328
0.1uF
16V
R303
100K
C323
22uF
16V
READY
R316
220
3V3
C334
10uF
25V
5V_GENERAL
R301
56K
1%
C320
0.1uF
L306
BLM18PG121SN1D
R312
100K
2V5
R308
10K
R313
10
C342
0.1uF
16V
C316
100pF
MDS61887701
M303
GAS5
MDS61887701
M301
GAS2
MDS61887701
M304
GAS4
MDS61887701
M300
GAS1
MDS61887701
M302
GAS3
C310
0.01uF
25V
Q301
2SC3052
E
B
C
2V5
R332
22
/RESET2V5
R329
10K
R331
10K
3V3
R328
10K
Q300
2SC3052
E
B
C
R330
10K
/3D_FPGA_RESET
R340
2K
R341
5.6K
R346
5.6K
R342
22
R347
22
SDA2V5
L310
MLB-201209-0120P-N2
OPT
R345
2K
SDA
R339
4.7K
OPT
C348
0.1uF
16V
OPT
SCL
IC307
MAX3372EEKA-T
OPT
3
VL
2
GND
4
I/O_VL2
1
I/O_VCC2
5
I/O_VL1
6
THREE-STATE
7
VCC
8
I/O_VCC1
R337
22
OPT
SCL2V5
R333
22
OPT
3V3
R344
4.7K
OPT
2V5
R348
0
C349
22uF
16V
OPT
SCL
3V3
2V5
2V5
R343
22
SDA
C347
0.1uF
16V
OPT
R336
22
OPT
Q303
FDV301N
G
D
S
R338
22
3V3
Q302
FDV301N
G
D
S
R334
22
OPT
R306
12.4K
1%
R305
33K
1%
IC304
AZ2940D-2.5TRE1
2
GND
3
VOUT
1
VIN
R317
1
C339
10uF
10V
C350
10uF
10V
READY
R2
Vout=0.923*(1+R1/R2)
R2
R1
R1
Vout=0.923*(1+R1/R2)
POWER
2     3
2009/10/22
LCD TV 
Contents of LCD TV Standard Repair Process
No.
Error symptom (High category)
Error symptom (Mid category)
Page
Remarks
1
No video/Normal audio 
1
2 
No video/No audio
2
3
Video error, video lag/stop
3
4
Color error
4
5
A. Video error
Vertical/Horizontal bar, residual image, 
light spot, external device color error
5
6
No  power
6
7
B. Power error
Off when on, off while viewing, power auto 
on/off
7
8
No audio/Normal video  
8
9
C. Audio error
Wrecked audio/discontinuation/noise
9
10
No response in remote controller, key error, 
recording error, memory error
10
11
D. Function error
External device recognition error 
11
12
E. Noise
Circuit noise, mechanical noise
12
13
F.  Exterior error
Exterior defect
13
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