Roberts ecologic 2 - Page 13

Speaker or Earphone no sound
Check whether the L8 is
5V.
Check Pin1 of IC5 is
above 6V and check IC5,
Q25, L8, L9 and D6.
Check Module is working
OK and do not plug
earphone.
Measure whether the
Pin29 and Pin30 of
FS2025 Module have
sound wave.
Check Module.
Measure whether the
Pin3 and Pin4 of W2 have
sound wave.
Check IC2, VR600,
CON600 and W2.
Measure whether the
Pin1 and Pin7 of IC3 have
sound wave.
Check IC3.
Measure whether the
JK301 has sound wave
Check JK301, R300,
R301, CON300 and W1.
Check Earphone.
B
( Earphone )
( Speaker )
Y
es
No
Y
es
Y
es
Y
es
Y
es
Y
es
Y
es
No
No
No
No
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