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Service Bulletin
No. : OST-733
Date: June 27, 2007
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Model: DCM280 and DCM380 all versions

Subject: Change the microcomputer (Ucom) for an improvement of DAC
phase output control.

Symptom: Reversed phase in the audio signal.

Solution: The Ucom used in DCM380 and DCM280 has been improved.
Please change of Ucom when the unit comes in for service for this symptom.