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