PG-C45X - diagramas.diagram...

PG-C45X - diagramas.diagram... PG-C45X - diagramas.diagram...

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PG-C45X Checking the power unit There is no voltage output at CN708 Yes Which output voltage line fails? BU5.3V Is AC voltage(90~264V)applied across the CN701 connector? Yes Is AC voltage(90~264V)applied across the CN706 connector? No Is the fuse F701 open? No Is the resistor R702 open? No Is the Bimetal SW open No Replace Inlet unit. TROUBLE SHOOTING TABLE (Continued) No Other No Yes Yes Is the resistor R775 open? Yes Yes Yes Check the Output PWB unit Check the T703, IC703, IC705, IC706 and their peripheral circuits. Check the CN701 or AC cord. 30 No Replace Power unit. Replace the F701. Replace the R702. Push the red button of the bimetal. Replace the R775.

No audio output Is the audio signal outputted from the emmitor of Q306? TROUBLE SHOOTING TABLE (Continued) Yes Is its signal inputted into pins(2) and (15) of IC303? Yes Is its signal inputted into pins(12) and (5) or pins(3) and (13) of IC302? Yes Is its signal outputted from pins(14) and (15) or pins(16) and (17) of P3102? Yes Is its signal inputted into pins(14) and (15) or pins(16) and (17) of SC102? Yes Check the J431, J421 and their peripheral circuits. No No No No No Check the P301 and its peripheral circuits. Check the IC303 and its peripheral circuits. Check theIC302 and its peripheral circuits. Check the Q304 and Q305 and its peripheral circuits. Check the connection between P3102 and SC3102. 31 PG-C45X

No audio output<br />

Is the audio signal outputted from<br />

the emmitor of Q306?<br />

TROUBLE SHOOTING TABLE (Continued)<br />

Yes<br />

Is its signal inputted into pins(2)<br />

and (15) of IC303?<br />

Yes<br />

Is its signal inputted into pins(12)<br />

and (5) or pins(3) and (13) of IC302?<br />

Yes<br />

Is its signal outputted from pins(14)<br />

and (15) or pins(16) and (17) of<br />

P3102?<br />

Yes<br />

Is its signal inputted into pins(14)<br />

and (15) or pins(16) and (17) of<br />

SC102?<br />

Yes<br />

Check the J431, J421 and their<br />

peripheral circuits.<br />

No<br />

No<br />

No<br />

No<br />

No<br />

Check the P301 and its peripheral<br />

circuits.<br />

Check the IC303 and its peripheral<br />

circuits.<br />

Check theIC302 and its peripheral<br />

circuits.<br />

Check the Q304 and Q305 and its<br />

peripheral circuits.<br />

Check the connection between<br />

P3102 and SC3102.<br />

31<br />

<strong>PG</strong>-<strong>C45X</strong>

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