DOWNLOAD LG 47CS570 (CHASSIS:LA01U) Service Manual ↓ Size: 6.09 MB | Pages: 71 in PDF or view online for FREE

Model
47CS570 (CHASSIS:LA01U)
Pages
71
Size
6.09 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47cs570-chassis-la01u.pdf
Date
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Trouble shooting guide
2. Digital TV Video
Check RF Cable & Signal
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power 
IC3703  2 pin : 1.2V
Check IF_P/N Signal
TU3702 17/18 Pin
Replace IC3703 
Check Tuner 5V Power
L3702
Check 
IC411
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace 
IC411
No
Bad Tuner. Replace Tuner.
Replace L3702
ok
※ When the PCB is EAX63529602
IC411 is not available.           
In this case, check IC406 is 5V or not
Trouble shooting guide
3. Analog TV Video
Check RF Cable & Signal
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power 
IC3703 2 pin : 1.2V
Check CVBS Signal
TU3702 11 Pin
Replace IC3703 .
Check Tuner 5V Power
L3702
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
Bad Tuner. Replace Tuner.
Check 
IC411
No
Replace 
IC411
No
Replace L3702
ok
※ When the PCB is EAX63529602
IC411 is not available.           
In this case, check IC406 is 5V or not
Trouble shooting guide
4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor
When the model is LK series,
Check JK1604, JK9903
ok
ok
ok
No
Replace Jack
5. Component Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK1601 or 1603
Y/PB/PR signal Line
- C211/213/215/217/218/220/222/224
ok
ok
ok
No
Replace Jack
ok
Check CVBS_DET Signal
Replace R9915 or R1666
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
No
Check COMP_DET Signal
Replace R1614, R4223 or R1615
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
Check JK1604 , JK9901
CVBS Signal Line
- C227 , C405
Trouble shooting guide
6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor
Check EDID & EEPROM
IC1105 I2C Signal
R1141, R1143(SDA,SCL)
Check JK1104
H/V_Sync/R/G/B Signal Line
-R4024/4025/C204/206/208/210
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
ok
Replace Jack
Check DSUB_DET
Replace R1146 or R1147
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
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