Zenith D35, Service Manual

Page: 47 / 156

3-90
YES
Does CD/DVD appear
at FLT? Does CD/DVD appear
at FLT?
OK
Does Loading appear
at FLD?
POWER ON
AUDIO µ-COM Circuit
YES YES
YES
Does no Dise or Time
appear at FLD?
NO NO
NO
NO
NO
NO
NO
NO
NO
NO
Does it appear DVD Error
at FLD?
Reconnet it.
Refer to SMPS.
Refer to oscillator Circuit.
Check DVD Reset
Waveform.
Check IC101 Reset
Waveform.
Check 3.3V line.
Check Power dection
Circuit.
NO
Check Connector (PN103)
if is normally.
Check power part of Main
B/D.
Check oscillator of X101.
Check if CN901 Pin7
is high.
Check if IC101 Pin53
is high.
Check if IC101 Pin9, 36,
59 is high(5V).
Check if IC101 Pin49
is high.
Replace IC101.
NO
NO
Check if DVD an Audio
Micom Insert is OK.
Check Power.
YES
Check DVD Module.
YES
Check SMPS.
YES
YES
YES
YES
YES
YES
YES
YES
YES
ELECTRICAL TROUBLESHOOTING GUIDE
AMP PART