Zenith DVT316 Series, Service Manual

Page: 10 / 78

- 1-9 -
2. AUDIO µ. COM CIRCUIT
POWER ON
Does CD/DVD
appear at FLT?
Does LOADING
appear at FLD?
Does it appear
DVD Error at
FLD?
Does Video1/2, TV
AUDIO, FM 87.5
appear at FLD?
OK.
Check
Connector(PN903)if
is normally.
Reconnet it.
Refer to SMPS
Refer to oscillator
Circuit.
Check DVD Reset Waveform.
Check IC101 Reset Wavefrom.
Check 3.3V line.
Check Power dection Circuit..
Check power part
of Main B/D.
Check oscillator
of x101.
Check if PN200
PIN is High.
Check if IC101
PIN is High.
Check if IC101 PIN
, , , is high
(5V).
Check if IC101
PIN
is High .
Replace IC101.
Does no Dise or
Time appear at FLD?
Check if DVD an Audio
Micom Interface is OK.
Check power.
Check DVD Module.
Check SMPS.
17 46 72 90
11
5
26