Sharp LC-26AD22U Service Manual page 39

NO SOUND DVD/CD ANALOG
AUDIO
Does this have signal
at pins 8 and 10 of
CP8501?
No
Does this have signal at
pins 1 and 7 of IC8501?
No
Does this have signal at
pins 113, 114, 115 and
116 of IC4001?
No
Change IC4001.
NO SOUND DVD/CD DIGITAL
AUDIO
Does this have signal
at pin1 of CP8501?
No
Does this have signal
at pin122 of IC4001?
No
Change IC4001.
TROUBLESHOOTING GUIDE
Yes
Yes
Yes
Yes
Yes
E-10
Refer to "LCD SECTION".
Check pins 1 and 7 of IC8501
and peripheral circuit.
Change IC8501.
Check J706 and
peripheral circuit.
Check IC4001 and
peripheral circuit.