Denon DVM725 Service Manual page 17

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FLOW CHART NO.18
[No Disc] indicated. (When the focus servo is not functioning.)
Replace the DVD Main CBA Unit.
No improvement can be found.
Replace the DVD Mechanism.
FLOW CHART NO.19
[No Disc] indicated. (When the laser beam does not light up.)
Replace the DVD Main CBA Unit.
No improvement can be found.
Replace the DVD Mechanism.
FLOW CHART NO.20
Both functions of picture and sound do not operate normally.
Replace the DVD Main CBA Unit.
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L 13942296513
No improvement can be found.
Replace the DVD Mechanism.
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Original DVD Main CBA Unit is poor.
No
Original DVD Main CBA Unit is poor.
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No
Original DVD Main CBA Unit is poor.
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