DOWNLOAD LG 47LB2DE (CHASSIS:LB61D) Service Manual ↓ Size: 9.09 MB | Pages: 57 in PDF or view online for FREE

Model
47LB2DE (CHASSIS:LB61D)
Pages
57
Size
9.09 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47lb2de-chassis-lb61d.pdf
Date
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- 21 -
(5) When Component or RGB-DTV/ PC mode is abnormal
(6) When HDMI/DVI mode is abnormal
(7) When DVI-PC mode is abnormal
(8) When Digital TV mode is abnormal
Is normal the Input voltage, IIC
Communication and HV sync?
Is normal the Input voltage, IIC
Communication and HV sync?
Is the CXA2151Q(IC500)
normal?
Yes
Is the MST3362(IC604)
normal?
Is the MST3362(IC604)
normal?
No
Replace the IC.
No
No
Replace the IC.
No
Is normal the Input voltage, IIC
Communication and HV sync?
Yes
Is the Scaler normal?
No
Replace the IC.
No
Is normal the Input voltage, IIC
Communication and HV sync?
Is the EDID correct?
Yes
Is the latest version the Graphic card
driver of the PC?
Update the Graphic card driver with the
latest version.
No
No
Is normal the Input voltage, IIC
Communication and HV sync?
Yes
Is the Scaler normal?
No
Replace the IC.
Cable connected well.
No
Is the Tuner Cable connected
well?
No
Is normal the Input voltage, IIC
Communication and output of the tuner?
Is the Splitter normal?
Yes
Replace the Tuner.
Is the Flat Cables
normal?
No
Is normal the Input voltage, IIC
Communication and HV sync?
Replace the IC.
No
Is normal the Input voltage, IIC
Communication and HV sync?
Yes
Is the Scaler normal?
No
Replace the IC.
No
No
Replace the Tuner.
No
Yes
- 22 -
3. When sound is abnormal
(1) Symptom
1) LED is green.
2) Screen display but sound is not output.
(2) Check following
Is the SPK cable
normal?
Is the SPK cable
connected well?
Cable inserts well.
No
No
Is the Flat cable
connected well?
Is the RF(Digital)
sound normal?
Cable inserts well.
No
No
Replace the IC200.
Replace SPK cable.
Yes
Yes
Yes
Is the RF(Analog) / AV/
Component L-R sound
normal?
Is the CS5330A(IC1000),
MC33078(IC1001),
Scaler(IC401) normal?
No
No
Is the MSP4450K
(IC200) normal?
Replace the IC400.
Yes
Is the NSP2100
(IC400) normal?
Replace the IC402.
Yes
Is the TAS5122
(IC402) normal?
Replace the IC400.
Yes
Yes
No
No
No
No
Is the Scaler
(IC401) normal?
Replace 
VSC Digital B/D.
Yes
Yes
Replace the IC.
No
Is the SPDIF sound
normal?
Is the XC95288(IC300),
CS8415A(IC1003),
Scaler(IC401) normal?
No
Replace the IC.
BLOCK DIAGRAM
- 23 -
  
 
 
 
 
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