Dmd System Check - Sharp XV-Z3000 Service Manual

XV-Z3000
DT-500

DMD system check

heck P6001 for breakage
and solder crack and
peripheral resistance for
solder crack.
heck S 9001 for
breakage and solder crack.
Is there any vertical stripe
(block noise) on the
Is approx. 7 V applied to
TL9303?
YES
Is approx. 26 V applied to
TL9301?
YES
Is approx. -26 V applied to
TL9302?
YES
YES
O
O
O
heck I 9301 and
peripheral circuits.
O
30
The main PWB and DMD
PWB are in poor contact.
heck the contact surface
for dirt and smear.
heck the DMD connector
for breakage.
Reassemble the DMD,
optical mechanism, and
DMD PWB.