Service manual

3-18
PB Mode.
No sound
Is 5.1V power supplied at IC301 Pin96?
YES
YES
Check 5.1V Power Part.
NO
Do CLOCK,DATA Signal appear at
IC301 Pins62, 63?
YES
Check CLOCK,DATA of µ-COM.
NO
Does Sound Signal appear at IC301
Pin11 ?
YES
YES
Check IC801 Pin22 Circuit
YES
Does Sound signal appear at IC301
Pin100?
Check and replace connection at P3D02
Pin6 connect.
NO
(2)