Toshiba SD-270EKB2, Руководство по обслуживанию

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1 -7
Distorted audio and loud noise
No
Yes
No
Yes
Yes
No
No
Distorted audio and
loud noise
Replace R176 and R175
Check Q27
Replace Q17~Q18
Check whether the
muting transistor R176
andR175 are normal
Yes
Check whether the
muting transistor
Q17,Q18, are normal
Checking the U15 leads
the feet has no to break
to open
Correct connection
Replace U1
if the clock signal AOUT0,
ABCK and ALRCK output
by U1 are normal
Check whether the U1
or U15 powersupply
normal
No
Yes
Check the power supply
vo12V to the
operation amplifying Q27
and -12V are normal.
Yes
Check U15
Replace U1 or U15
No
Yes
SACLK waveform SBCLK waveform
S
SLRCK waveform
Trouble shooting chart