Panasonic SA-AKX320E, Руководство по обслуживанию, Страница: 22 / 66

22
7.5. No Sound coming out from All speakers
Press Power Button of Unit
or Remote Control to Turn
ON the Unit
Change SOC
(IC2001)
Check SOC(IC2001)
waveform existence
- I2C(
#P72, 73
)
- I2S(
#P81~83
)
NG
Check DSP
(IC6500) I2S input
#P8 waveform
existence
OK
NG
OK
OK
NG
NG
OK
Check DSP crystal
24MHz waveform
existence(X6500)
Check DSP PWM
waveform
existence
(pin 27 to 30)
NG
Check DAMP
IC6000 PWM
waveform
existence
Change RX2081
resistors Between
SOC and DSP if
Found NG
Change 24MHz
Crystal Oscillator
X6500
Change
DSP IC
Change DAMP
IC if Found NG
No Audio in both high and
low channel at All Selector
End
Check Supply
3.3V of DSP
(pin 11, 21, 35, 40)
OK
NG
OK
Change LB6500,
LB6501, LB6502 if
found NG
Check 1.5V on
Pin 13, 14 at
IC6500 Change
DSP
IC6500
Check +12V at
Pin 1,12 at
IC6000 Change
IC6000
NG
NG
OK
OK