Marantz VP4001, Service Manual

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Check P6001 for breakage
and solder crack and
peripheral resistance for
solder crack.
Check SC9001 for
breakage and solder crack.
Is there any vertical stripe
(block noise) on the
NO
Is approx. 7 V applied to
TL9303?
YES
YES
Is approx. 26 V applied to
TL9301?
YES
YES
Is approx. -26 V applied to
TL9302?
NO
NO
NO
Replace the DMD PWB.
DMD system check
The Main PWB and DMD
PWB are in poor contact.
Check the contact surface
for dirt and smear.
Check the DMD connector
for breakage.
Reassemble the DMD,
optical mechanism, and
DMD PWB.
25