Haier LTF47K1 Service Manual page 43

42"&47" LCD TV Haier LTF42K1&LTF47K1
Key Board
OSD is unstable or not working
N
Is Key Pad Board connecting normally?
Connect Key Pad Board
Y
N
Is Button Switch normally? Replace Button Switch
Y
N
Replace Key Pad Board
Is Key Pad Board Normally?
Y
Check Main Board
43