DOWNLOAD LG 19LS4R (CHASSIS:LP69C) Service Manual ↓ Size: 4.36 MB | Pages: 35 in PDF or view online for FREE

Model
19LS4R (CHASSIS:LP69C)
Pages
35
Size
4.36 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
19ls4r-chassis-lp69c.pdf
Date
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LG 19LS4R (CHASSIS:LP69C) Service Manual ▷ View online

TROUBLE SHOOTING
1. No Power (LED indicator off) : [A] Process
- 14 -
Check 15V or
ST_5V of Power B/D.
Fail
Pass
Check short of Main B/D
or Change Power B/D.
Check Output of
IC1100, IC1101.
Fail
Check short of
IC100, Q307.
Pass
Pass
Fail
Re-soldering or Change
defect part of IC100, Q307.
Change IC1100, IC1101.
Pass
Change IC1102, IC1103.
Check Output of
IC1102.
Fail
Check short of
Q307, TU600, IC500.
Fail
Re-soldering or Change
defect part of Q307,
TU600, IC500.
Pass
Pass
Change IC1104, IC1105.
Change LED Assy.
Check Output of
IC1104, IC1105.
Pass
Check LED Assy.
Pass
Check P304 Connector.
Fail
Check short of
IC100, IC400.
Fail
Fail
Re-soldering or Change
defect part of IC100, IC400.
- 15 -
2. No RASTER : [B] Process
Check LED status
On Display Unit.
Fail
Pass
Repeat A PROCESS.
Check Panel Link
Cable or Module.
Pass
Fail
Change Panel Link Cable or Module.
Check Inverter
Connector or
inverter.
Fail
Change Inverter Connector or Inverter.
Pass
Change IC100
Check Output of
L300
Pass
Check the LVDS
Output of IC100
Pass
Check Input source Cable and Jack.
Fail
Change Module.
Fail
Fail
Change L300.
- 16 -
3. No RASTER on PC Signal
Repeat [A, B]
process.
Pass
Check the input/
output of R735,
R736.
Fail
Check the J701.
Pass
Re-soldering or change the
defect part, Check the X100.
Check
the input/output
of R128, R131,
R136.
Pass
Check the
input/output of IC100.
Pass
Check input source cable and jack.
Fail
Fail
Re-soldering or Change
the defect part.
- 17 -
4. No Raster on Component Signal
Repeat [A, B]
process.
Pass
Check the input/
output of R901.
Fail
Check the J900.
Pass
Re-soldering or change the
defect part. Check the X100.
Check
the input/output
of R125.
Pass
Check the
input/output of IC100.
Pass
Check input source cable and jack.
Fail
Fail
Re-soldering or Change the defect part.
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