Panasonic PT-VX505NU User Manual

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Check IC5003 and peripheral circuit.

   Check S-7V at pin 4 of IC5003 and S5V at pin 8 of IC5003 power sup-

ply.

Check audio output circuit.

   Check speaker, connection of the terminal “K8F”.

Yes

No

Check  IC001 and peripheral circuit.

   Check the mute signal at pin 1 of IC001. The mute signal is output 

from pin 344 of IC 301<Scaler>. The OUT_DET signal is sent from 

Audio Out terminal.

  Mute-On: H at pin 344 of IC301, L at pin 1 of IC001.

Yes

No

Check IC5001 and peripheral circuit.

   Check the Pins 7 and 32 of IC5001, the voltage is respectively S3.3V 

and S1.8V.

Check IC5002<Audio SW> and peripheral circuit.

  Video: Pin 9: L,  Pin 10: H

  PC1:  Pin 9: L, Pin 10: L

   LAN/HDMI:  Pin 9: H, Pin 10: L

Check IC5005<Audio SW> and peripheral circuit.

  LAN: Pin10:H

  HDMI:Pin10:H

Yes

No