Sanyo LCD-22XR9DZ Service Manual page 26

3．There is picture but no sound.
No sound
Check if the voltage
NV01-6/7#
of
high level ?
No
Check the voltage
of VV01-b# is low
level ?
Yes
Change Check if the
another voltage of
VV01 VV02-b# is
low level ?
Yes
Change
another
VV02
Check if the wave
Yes
of NV01-4/12# is
is
normal ?
Check if the wave
of NV02-3/5# is
normal ?
No
Change
another
NV02
No
Change
No
another
NS01
Yes
No
No
Yes
Change
another
NV01
Check if the wave of
CV10's or CV12's pin
beside NS01 is normal ?
Yes
Change
another
CV10 or
CV12