4.Troubleshooting
4.1.2.NoSoundOutput
Ye s
Change the
MAIN
PCB.
Cha nge the
MAIN
P CB.
No
No output
Yes
Che ck S P DIF Output.
Che ck DS P.
Change speaker connect or.
Check if 3.3V
power is measured at
pin 1 of OPJACK1 on the
MAIN P CB.
Check if 3.3V
power is measured at
pin 95 of IC3002 on the
MAIN P CB.
(1)
Che ck if s ignal is
me a sure d at pin 16 of
IC1 on the Ma in P CB.
(2)
Check if s igna l is
measured at pin No. 2, 4, 45, 47,
of IC1 on the
MAIN P CB.
(3)
Check the MAIN P CB
ACN1,ACN2 speaker
output signa l.
* Re fe r to wa ve pa tte rn
image of Fig. 4-2.
Cha nge S peaker L, R.
Yes
No
No
No
Cha nge MAIN pcb
Spe aker output che ck.
* Re fe r to wa ve pa tte rn
image of Fig. 4-1.
* Re fe r to wa ve pa tte rn
image of Fig. 4-3.
Yes
Yes
Cha nge the
MAIN
P CB.Replace IC1
No
No
Cha nge the
MAIN
P CB.Replace IC1
No
No
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