Sanyo LCD-32XR10F(B), Руководство по обслуживанию

Страница: 29 / 45

3
．
Picture is normal, but no sound.
No sound
Yes Yes Yes
No No No
Yes
No
Yes
Check if voltage of
NV02-4#/5#/32#/3
3# is 24V.
Check 24V circuits
on power board
and power circuits
from XV03 to
NV02 on main
board.
Check if voltage
of NV02-10#/27#
is high level.
Check if voltage
of N802-143# /
227# is low level?
Are there
sound from
earphones?
Change
NV02
Check amplified
circuits of earphone
Touch CV04
and CV05 with
probe to check
if there are
sounds from
earphones. Check
audio output
circuits on
main board
Check circuits
from
N802-143#/227#
to NV02-10#/27#.
Change
N802