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4.1.2. No Sound Output
No output
Check if 3.3V
power is measured a t
pin 95 of IC3002 on the
MAIN P CB.
Ye s
Check if 3.3V
power is measured a t
pin 1 of OP J ACK1 on the
MAIN P CB.
(1)
Che ck if s igna l is
me a s ure d a t pin 16 of
IC1 on the Ma in P CB.
Ye s
(2)
Check if s igna l is
measured a t pin No. 2, 4, 45, 47,
of IC1 on the
MAIN P CB.
Ye s
(3)
Check the MAIN P CB
ACN1,ACN2 speaker
out put s igna l.
Ye s
Cha nge S pe a ke r L, R.
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Che ck S P DIF Output.
No
No
Che ck DS P.
No
*
Re fe r to wa ve pa tte rn
ima ge of Fig. 4-1.
No
*
Re fe r to wa ve pa tte rn
ima ge of Fig. 4-2.
S pe a ke r output che ck.
No
Change speaker
*
Re fe r to wa ve pa tte rn
ima ge of Fig. 4-3.
No
Replace IC1
No
Replace IC1
No
connect or.
4. Troubleshooting
Change MAIN pcb
Change the MAIN PCB.
Change the MAIN PCB.
Change the MAIN PCB.
Change the MAIN PCB.
4-3
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