Zenith XBV243 series Service Manual page 31

TROUBLESHOOTING (CONTINUED)
2. MPEG Circuit
Power is on
Does Logo appear
on the screen?
YES
Does the
moving picture of the DVD Disc
play on the screen
normally?
YES
Does the
moving picture of the video
CD play on the screen
normally?
YES
Does the audio sound
output normally?
YES
END
VR168 - 923-03485
ELECTRICAL
Check power & clock.
NO
Check power & clock.
YES
NO
Is MPEG data
signal normal?
YES
YES
Is error signal normal?
NO
Is MPEG data
signal normal?
YES
Is Clock normal?
YES
Does the audio
NO
sound output from MPEG
decoder?
YES
3-19
NO
Check CD/DVD DSP
output signal.
OK
OK
Check MPEG Decoder
input signal.
NO
Check CD/DVD DSP
output signal.
OK
Check MPEG Decoder
input signal.
NO
Check CD/DVD DSP
output signal.
OK
Check MPEG Decoder
input signal.
NO
Check clock signal
Check clock signal
D35E COMBO - ELECTRICAL