DOWNLOAD LG 32CS669C (CHASSIS:LD0AW) Service Manual ↓ Size: 5.57 MB | Pages: 41 in PDF or view online for FREE

Model
32CS669C (CHASSIS:LD0AW)
Pages
41
Size
5.57 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32cs669c-chassis-ld0aw.pdf
Date
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- 17 -
6. SCART Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK1602
R/G/B and sync signal Line.
ok
ok
ok
No
Replace Jack.
Check SC1_DET Signal.
Replace R1614.
No
Check Mstar LVDS Output.
Replace Mstar(IC101) or Main Board .
ok
No
7. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor.
Check EDID
I2C Signal
R138, R139(SDA,SCL).
Check JK1104
H/V_Sync/R/G/B Signal Line.
ok
ok
ok
No
No
R
e-download EDID data ,Replace Mstar(IC101) or Main Board.
ok
Replace Jack.
Check DSUB_DET.
Replac e R1146 or  R1147.
No
Check Mstar LVDS Output.
Replace Mstar(IC101) or Main board.
ok
No
- 18 -
8. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check EDID
R4033,R4034,R4035,R4036,
R4037,R4038 I2C Signal.
Check JK801, JK802, JK803.
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data.
Check HDCP EEPROM(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) o r Main Board.
ok
No
Replace Main Board.
No
Check HDMI_DET(HPD).
No
ok
Replac e R830,R828,R862.
- 19 -
9. 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 or 20V or 15V, 3.3V 
No
Replace Amp IC(IC501).
Check Mstar I2S Output
IC501 9,10,11 Pin.
No
Check signal line. Or replace Mstar(IC101).
Check Mstar AUDIO_MASTER_CLK
R148.
No
Replace Mstar(IC101) o r Main Board.
ok
Check AMP I2C Line
R140, R141.
No
Check signal line. Or replace Mstar(IC101).
- 20 -
10. Digital TV Audio
Check RF Cable & Signal.
Follow procedure 
’9. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703.
Replace L3703.
Check Tuner 1.8V Power. 
IC3703  2 pin : 1.8V
Check IF_P/N Signal
TU3700  10/11  Pin.
Replace IC3703. 
ok
ok
ok
No
No
No
Bad Tuner. Replace Tuner.
11. Analog TV Audio
Check RF Cable & Signal.
Follow procedure
’9. All  source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703.
Replace L3703.
Check Tuner 1.8V Power 
IC3703 2 pin : 1.8V.
Check CVBS Signal
TU3700 8 Pin.
Replace IC3703.
ok
ok
ok
No
No
No
Bad Tubner. Replace Tuner.
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