LG B2050 Service Manual - Page 68
Reassemble FPCB with CN400 connector
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Checking Flow 4 . TROUBLE SHOOTING START Check the soldering of CN400 ? YES Is the connection of FPCB with connector on PCB(CN400) ok ? YES Check the soldering of EMI filter ? YES Does LCD work properly ? YES LCD working NO Resoldering CN400 NO Reassemble FPCB with CN400 connector NO Resoldering EMI filter (FL400~FL403) NO Replace LCD module - 67 -
- 67 -
4 . TROUBLE SHOOTING
Checking Flow
START
Check the soldering of
CN400 ?
Resoldering CN400
Resoldering EMI filter (FL400~FL403)
Reassemble FPCB with CN400 connector
Replace LCD module
Is the connection of
FPCB with connector on
PCB(CN400) ok ?
Check the soldering of
EMI filter ?
Does LCD work
properly ?
LCD working
YES
NO
NO
NO
NO
YES
YES
YES