
-56-
Troubleshooting
No Sound
Check IC5001 and peripheral circuit.
Check 1V power supply.
check if the audio sig-
nal is observed at pins 7
and 15 of Ic5001.
Check audio output circuit.
Check speaker, connection of the terminal “K8F”
Yes
No
Check following steps.
Check IC5031, 5V_AUDIO and peripheral circuit.
Check the Mute signal at pin 1 of IC5031. The Mute signal is output from
pin 9 of IC 301<System Control>. The OUT_DET signal is sent from
Audio Out terminal.
Mute-On: H at pin 9 of IC301, L at pin1 of IC5031
check if the audio sig-
nal is observed at pins 5
and 8 of Ic5031.
Yes
No
Summary of Contents for PLC-XU75
Page 60: ... 60 IC Block Diagrams FA5502 P F Control IC621 HIN202EIB RS 232C Driver IC3801 ...
Page 62: ... 62 IC Block Diagrams L3E01060 Level Shift IC2501 IC2531 IC2561 PW190 Scaler IC301 ...
Page 63: ... 63 LM4889 Audio Output IC5031 STR Z2156 Power OSC IC641 IC Block Diagrams ...
Page 90: ... KH3AC Aug 2007 DC 350 Printed in Japan SANYO Electric Co Ltd ...
Page 104: ...A12 PCB_KH3AC NO DATA ...