4 Repair4.1 IntroductionStructure of this chapterThis chapter describes all repair activities recommended for the IRB 4600 and anyexternal unit.It is made up of separate procedures, each describing a specific repair activity.Each procedure contains all the information required to perform the activity, forexample spare parts numbers, required special tools, and materials.The procedures are gathered in sections, divided according to the componentlocation on the IRB 4600.Required equipmentThe details of the equipment required to perform a specific repair activity are listedin the respective procedures.The details of equipment are also available in different lists in the chapter Referenceinformation on page 333.Safety informationThere are general safety information and specific safety information. The specificsafety information describes the danger and safety risks while performing specificsteps in a procedure. Make sure to read through the chapter Safety on page 19before commencing any service work.NoteIf the IRB 4600 is connected to power, always make sure that the IRB 4600 isconnected to earth before starting any repair work.For more information see:• Product manual - IRC53HAC033453-001 Revision: H 189© Copyright 2009-2013 ABB. All rights reserved.4 Repair4.1 Introduction