Table of Contents
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check if supply +12V of Decoding board is normal
Yes
check if laser head ass'y can light normally
No
check if tie wires of laser head ass'y
is loosen and broken
No
laser head ass'y broken
FLOW CHART NO.4
no image from DVD
check if video socket、video wire is normal
No
check and change video wire
No display from display screen
check voltage of filaments transformer
is normal
No
check if the capacitor voltage of filaments filter is short circuit
No
check if display screen is broken
No
check if tie wire is broken
Yes
Yes
Yes
socket
transformer is broken
No
change display screen
Yes
change tie wires
Yes
Troubleshooting
No
check steady circuit
Decoding board is broken
check and change good laser head ass'y
Decoding is broken
Yes
change capacitance
9-2
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Table of Contents
