Sanyo 1 682 350 94, Руководство по обслуживанию

Страница: 24 / 38

3
．
No sound, but picture is normal:
Yes No
No
Yes
No
Yes No Yes
No sound
Check if level of
NV01-PIN19&25
are all high?
Check if level of
VV03-b is low?
Check if there is
signal inputted to
NV01-PIN15&20&21
&22 ?
Check power voltage
of NV01.
Check IIS
(signal input
circuits) on main
board.
Check Reset &
Mute circuits of
power amplifier.
Replace
VV03
Check +12V on
power board.
Check IIC signal of
NV01- PIN23&24.