Toshiba SD-170EKB2, 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
Yes
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
No
Yes
Check the power supply voltages
+12V 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
Check whether the muting
transistor Q17,Q18, are normal
Check whether the muting
transistor R176 andR175 are
normal