Roadstar DVR-9100, Руководство по обслуживанию, Страница: 10 / 76

8
TROUBLE SHOOTING
D. Power on noise or noisy loader
E. Reading DVD test discs N.G. or loader doesn’t function, scratches disc or bad
readability.
System noise
Check noise source
If noise is from
loader
Change loader
Change M/B
OK
The loader
can’t work
Check all cables are
in correct position.
If
M/B IC U25’s
firmware is the newest
version
Update M/B’s
firmware
else change M/B
Check resisters had contact
that near M/B IC
U8,U9,U25,U34 & J29.
If
Loader’s
firmware is the newest
version
Update loader’s
firmware
else change loader
OK
No
Yes
No
Yes
No
Yes