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1) Before replacement of the logic board, check the CD / DVD print position value in EEPROM
information print.
2) After replacement of the logic board, set the print position value in CD-R Correction of the
Service Tool.
3) If EEPROM information is not available before replacement of the logic board due to logic board
failure, etc., click CD-R in the Service Tool to print the CD-R check pattern, and confirm that the
intersection of the axes Y and X is at the center of the CD / DVD.
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