4.9 Replacement of expansion board in the computer unitLocationTo connect a serial channel or a fieldbus adapter to the controller, the maincomputer must be equipped with the expansion board DSQC1003.The expansion board is located in the computer unit as shown below.Axx1300000860Expansion board with serial channel and one slot for AnybusCC fieldbus adapter.ARequired equipmentNoteArt. no.EquipmentDSQC10033HAC046408-001Expansion BoardThe contents are described insection Standard toolkit, IRC5 onpage 305.Standard toolkitRemovalThe following procedure describes how to remove the expansion board from thecomputer unit.Note/IllustrationActionDANGERBefore commencing any work inside thecabinet, please observe the safety inform-ation in section Make sure that the mainpower has been switched off on page 26.1Continues on next page232 Product manual - IRC53HAC047136-001 Revision: M© Copyright 2004-2018 ABB. All rights reserved.4 Repair4.9 Replacement of expansion board in the computer unit