LG LG9200 Service Manual page 44

LCD Display Trouble (3)
START
Pow er is supplied to
the boa rd?
Yes
Conne ction be twe en
FPCB and boa rds is OK?
Yes
CN301 or CN901 is so ld ered well?
Yes
Paths of LCD c ontr ol
sig nals are O K?
LCD Mo dule is out of order.
Change the LCD Mod ule.
No Refer to
Power On Tr ouble
No
Reco nnect FPCB
No
Slide PCB LC D Module is OK?
Re-solder t he CN301
or CN901
No
Re-solde r the EMI filte r
or the CRC Filter
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4. TROUBLE SHOOTING
Yes
No
Afte r changing the boa rd,
LCD Display is OK?
Yes
Conne ction be twe en
No
Yes
No
FPCB is OK?
Yes
The boa rd is br ok en.
Change the boa rd.
Reso ld er
The CN801
Replace t he FPCB