Service Manuals, User Guides, Schematic Diagrams or docs for : Minolta Copiers Di620 1155037

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                                                                  MINOLTA CO., LTD., SERVICE ENGINEERING DIVISION
                                                                                                     PAGE NO. : 1/2
                 SERVICE BULLETIN
                                                                   PROBLEM            FUNCTION            SAFETY

                                                                                    SERVICEABILITY        OTHERS

MODEL NAME :     Di620                                             OTHERS           PERFORMANCE         CORRECTION

                                                                                SAFETY REGULATION         OTHERS
MODEL CODE :     1155
         NO. :   037
       DATE :    990609
   SUBJECT :     NOISE FROM THE CLEANING UNIT



PROBLEM: Noise can at times occur from the Cleaning Unit drive mechanism.
CAUSE: Variations in accuracy of the drive gear and associated parts result in varying distances between the shaft
       of the Toner Conveying Coil gear and that of gear A (that transmits drive from PC Drum Drive Motor M2).
SOLUTION: The following changes have been made:
           1. A Toner Conveying Coil fixing holder (01) has been added.
           2. A hole (3.7mm) has been drilled into the mounting bracket (02) that is used to secure the holder
              (01).
           3. The dimensions of the Toner Conveying Coil (03) and the shaft on which gear A is mounted have
              been changed.
           NOTE: The new gear A mounting shaft is valid effective with machines starting with Se/No. 

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