TROUBLE SHOOTING CHART
NO Picture
Check point:
If pin3 of U301 has vibrate signal
Replace the U301 TEA1523P
Solution:
Replace the R5 or U2
Solution:
Replace the Diode D310
Solution:
Check if F301 Tr301 L031 D302 D303
D304 Is damaged
GO
NO
YES
YES
Standby LED does not
light
Check point:
The output voltage of VCC is 5V+/- 5%
Observe: If the LED can be lighted up again when the R5 on
front panel Board is shot circuit manually.
Check point:
The voltage of the anode of
capacitor C305 is over 150V
Observe: N/A
NO
Check point:
The pin1 of C303 is 2.5V
Observe: N/A
NO
Yes
NO
4-1
