Trouble Shooting Information for C7000VP seriesPage 20 Rev. 2.02010/09/171.20 E750-0002 DescriptionThere are some reported instances from the field where, when the machine was relocated thenecessary work was done according to the procedure ‘Relocating the Machine.’ At this time,however, not the drawer connector mount but each connector was detached from the backsideof the sub station. This caused an error in plugging each connector at the new installation place,ultimately leading to the error code E750-0002.- E750-0002 can be displayed when the model name informed by the main controller doesnot match with that stored in the DC controller (i.e., same series but different model). CauseCommunication error occurred between the DC controller software and the main controllersoftware because the connectors were plugged mistakenly. Field RemedyAlthough it's difficult to identify a connector plugged to the wrong jack from the error code, whenthe same error occurs at time of relocation of this machine or service work for the drawerconnector mount, check to see if each connectors are connected to the correct jack.Note:When detaching/re-attaching the drawer connector to connect the main station and sub stationduring installation or relocation, be sure to work not by the connector but by the drawerconnector mount to prevent errors in plugging connectors.1.21 E750-2012 DescriptionThere are some reported instances from the field where, at time of replacement of the fixingintermediate assembly (FM2-9291) the two short connectors for identifying the destinationfailed to be reattached, resulting in the error code E750-2012.- E750-2012 can be displayed when the combination of the DC controller software and thefixing assembly is not correct. Field RemedyWhen replacing the fixing intermediate assembly, be sure to follow the cautions described inAppendix 3 ‘Points to Note When Replacing Primary/Secondary Fixing Intermediate Unit.’