Philips DVP6600, Руководство по обслуживанию

Страница: 20 / 44

4-7
Distorted audio and loud noise
No
Yes
No
Yes
Yes
No
No
Distorted audio and
loud noise
Replace
Q31
and
D23
Check Q7and Q8
Replace Q26,Q30
Check whether the
muting transistor Q31
andD23 are normal
Yes
Check whether the
muting transistor
Q26~Q30 are normal
Checking the U10 leads
the feet has no to break to
open
Correct connection
Replace U10
if the clock signal
89_AL, 89_AR output by
U2 are normal
Check whether the U2 or
U10powersupply normal
No
Yes
Check the power supply voltages
+12V and -12V to the operation
amplifying Q7 andQ8 are normal.
Yes
Check U10
Replace U2 or U10
No
Yes
Trouble shooting chart
SACLK waveform
SBCLK waveform
S
SLRCK waveform