Mpeg Circuit - LG DP270B Service Manual

MAIN ELECTRICAL TROUBLESHOOTING GUIDE

2. MPEG CIRCUIT

Power is on
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.
NO
Is MPEG data
signal normal?
YES
Is error
signal normal?
NO
Is MPEG data
signal normal?
Is Clock normal?
NO Does the audio
signal output from MPEG
decoder?
3-14
YES
NO
OK
YES
NO
NO
NO
YES
NO
YES
Check CD/DVD DSP
output signal.
OK
Check MPEG Decoder
input signal.
Check CD/DVD DSP
output signal.
YES
Check MPEG Decoder
input signal.
Check CD/DVD DSP
output signal.
OK
Check MPEG Decoder
input signal.
Check clock signal
Check clock signal