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
7. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check EDID & EEPROM
IC801,IC802,IC804
I2C Signal
Check JK801, JK802, JK803
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
Check HDCP Key NVRAM(IC103)
Power & I2C Signal
Replace the defective IC.
ok
No
Replace Jack
Check HDMI Signal
Check other set
If no problem, check signal line
ok
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
Replace Main Board
No
Check HDMI_DET(HPD)
No
ok
Replace R830,R828,R862
Trouble shooting guide
8. All Source Audio
Check the TV Speaker Menu
(Menu -> Sound -> TV Speaker)
On
ok
ok
Check Output Signal P501
1, 2, 3, 4 pin.
Replace Audio AMP IC(IC501)
ok
No
Check Connector & P501
Replace connector
if found to be damaged.
ok
No
Check speaker resistance
and connector damage.
Replace speaker.
ok
No
Off
Toggle the Menu
Check AMP IC(IC501) Power
24V, 3.3V, 1.8V.
No
Check Regulator IC404
Check Mstar I2S Output
R503, R504, R505
No
Check signal line. Or replace Mstar(IC101)
Check Mstar AUDIO_MASTER_CLK
TP502
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
R506, R507
No
Check signal line. Or replace Mstar(IC101)
Trouble shooting guide
9. Digital TV Audio
Check RF Cable & Signal
Follow procedure 
‘8. All source audio’
trouble shooting guide.
ok
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
ok
ok
ok
ok
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
10. Analog TV Audio
Check RF Cable & Signal
Follow procedure 
‘8. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power 
IC3703 2 pin : 1.2V
Check CVBS Signal
TU3702 
9
Pin
Replace IC3703 .
Check Tuner 5V Power
L3702
ok
ok
ok
ok
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
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