24
7.4.
No Sound from MIC at any selector
Press Power Button of Unit
or Remote Control to Turn
ON the Unit
Change Mic cable/
Mic if found NG.
-Check Mic and
Mic cable.
NG
Check Supply
Voltage
IC1400/1
(pin9) >9V - OK
OK
No
signal
Yes
1
2
OK
NG
NG
OK
Monitor CN1401 pin 1
(MIC IN) signal. No
Signal when speaking -
> NG
Check if signal at
main pcb C1048 to
IC1001
No
Signal
Check SOC
IC1001
(Pin 84)
Change IC1400/1
if found short to
gnd.
Replace:
IC1400/1
Replace
C1048 on
Main PCB
Change
IC1001.
3
4
Select USB A selector, connect MIC1/
MIC2. Turn ON MIC and speak into MIC.
No Sound comes out from speaker.
End
Check CN1401(pin 2/3)
Mic Det status when MIC
inserted, 3.3V
±
OK
<2.0V - NG
Yes
No
signal
Yes
5
Replace MIC
Jacks
JK1401/
JK1403
6
jomi
Содержание SA-AKX710PU
Страница 11: ...11 5 Location of Controls and Components 5 1 Remote Control Key Button Operation j o m i ...
Страница 19: ...19 7 1 1 Check Point SMPS P C B 7 1 2 Check Point Main P C B 4 5 1 1 2 3 1 7 6 j o m i ...
Страница 21: ...21 7 2 1 Check Point Main P C B 6 1 2 j o m i ...
Страница 23: ...23 7 3 1 Check Point Main P C B 1 2 4 3 j o m i ...
Страница 25: ...25 7 4 1 Check Point MIC P C B 7 4 2 Check Point Main P C B IC140 IC140 CN140 JK140 JK140 6 2 C140 j o m i ...
Страница 27: ...27 7 5 1 Check Point Tuner P C B 7 5 2 Check Point Main P C B Antenna CN5 IC5 1 2 3 4 5 6 7 SO j o m i ...
Страница 29: ...29 7 6 1 Check Point Tuner P C B 7 6 2 Check Point Main P C B Antenna CN5 IC5 1 2 3 4 5 6 7 SO j o m i ...
Страница 31: ...31 7 7 1 Check Point Main P C B 1 3 4 5 6 7 j o m i ...
Страница 33: ...33 7 8 1 Check Point Main P C B 1 3 4 5 6 7 j o m i ...
Страница 54: ...54 j o m i ...
Страница 107: ...107 MMH1804 j o m i ...