Toshiba 15LV505 Service Manual page 59

NO SOUND DVD/CD ANALOG
AUDIO
Is there signal at pins
113, 114, 115 and
116 of IC4001?
Yes
Is there signal at pins 1
and 7 of IC8501?
Yes
Does CD8501 connected?
Yes
Change MAIN PCB.
NO SOUND DVD/CD DIGITAL
AUDIO
Is there signal at pin1
of CP8501?
No
Is there signal at pin
122 of IC4001?
No
Change IC4001.
TROUBLESHOOTING GUIDE
No
No
No
Yes
Yes
Change IC4001.
Check pins 1 and 7 of IC8501
and peripheral circuit.
E-9
Connected CD8501.
Change MAIN PCB.
Check line circuit IC4001
to CP8501.