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 IC401
is ok?
Yes
Yes
Check if REC
Output of Jack
is ok?
Yes
OK
Audio Abnormal of
Rec 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 IC409 Buffer.
No
Check Function IC, IC401
19
Audio Part
