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6. Trouble Shooting Guide
4. AUDIO LINE OUTPUT Abno rmal
Check if the
output of IC501
pin121 is ok?
Replace IC501.
No
Yes
Check if the
output of IC408
is ok?
No
Check if the
Signal waveform of
IC410 is ok?
Yes
Yes
Check if H/P
Output of Jack
is ok?
Yes
OK
Audio Abnormal of
H/P Output
Check if I2S
between IC501
is ok?
Check I2S Line.
Yes
Check if VQ &
FILT+ is ok?
No
No
Check PLL Circuit of IC408.
Replace DAC, IC408
Yes
No
Check TR of Mute Circuit.
Check Mutec Port of IC408.
No
Check Connection CN701.
Audio Part
