Mpeg Circuit - LG DP450G Service Manual

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

2. MPEG CIRCUIT

Power is on
YES
Does logo appear
on the screen?
YES
Does the
Video of the DVD Disc
play properly?
YES
Does the
Video of the video CD
play properly?
OPTION
If included VCD function.
Does
the audio sound output
normally?
YES
END
NO
Check power & clock.
YES
NO
Is MPEG data
signal normal?
YES
Is error
YES
signal normal?
Is MPEG data
NO
signal normal?
Is clock normal?
YES
Does the audio
NO
signal output from MPEG
decoder?
YES
3-14
NO
Check CD/DVD DSP
output signal.
OK
OK
Check MPEG Decoder
input signal.
NO
Check CD/DVD DSP
output signal.
YES
Check MPEG Decoder
input signal.
NO Check CD/DVD DSP
output signal.
OK
Check MPEG Decoder
input signal.
NO
Check clock signal
NO
Check clock signal