Philips DVP3140 Service Manual page 27

Distorted audio and loud noise
Distorted audio and
loud noise
Yes
Check the power supply voltages
+12V to the operation amplifying
Q27 and -12V are normal.
Yes
Check whether
muting transistor R176
andR175 are normal
Yes
Check whether
muting transistor
Q17,Q18, are normal
Yes
Checking the U15 leads
the feet has no to break to
open
Yes
if the clock signal AOUT0,
ABCK and ALRCK output
by U1 are normal
Yes
Check whether the U1 or
U15 powersupply normal
Yes
Replace U1 or U15
4-17
No
No
the
No
the
No
No
Remark: Trouble shooting chart for
Check Q27
Replace R176 and R175
Replace Q17~Q18
Correct connection
No
Replace U1
SACLK waveform
SBCLK waveform SSLRCK waveform
Check U15
Trouble shooting chart
DVP3142(K/KM)/XX
DVP3144(K)/XX