4 Repair4.1.2 Instructions for reading the following sections60 3HAC021111-001 Revision: B4.1.2 Instructions for reading the following sectionsThe subsequent sections describe the type of on-site maintenance that can be performed bythe customer’s own maintenance staff. Some maintenance jobs require special experience orspecific tools and are therefore not described in this manual. These jobs involve replacing thefaulty module or component on-site. The faulty component is then transported to ABB forservice.Calibration The robot must be re-calibrated when a mechanical unit or part of one is replaced, when themotor and feedback unit is disconnected, when a resolver error occurs, or when the powersupply between a measurement board and resolver is interrupted. This procedure is describedin detail in section Calibration information on page 131.Any work on the robot signal cabling may cause the robot to move to the wrong posi-tions.After performing such work, the calibration position of the robot must be checked asdescribed in section Calibration information on page 131.Tools Two types of tools are required for the various maintenance jobs. It may be necessary to useconventional tools, such as sockets and ratchet spanners, etc., or special tools, depending onthe type of servicing. Conventional tools are not discussed in this manual, since it is assumedthat maintenance staff have sufficient basic technical competence. Maintenance jobs whichrequire the use of special tools are, on the other hand, described in this manual.Foldouts The chapter on spare parts comes with a number of foldouts which illustrate the parts of therobot. These foldouts are provided in order to make it easier for you to quickly identify boththe type of service required and the make-up of the various parts and components. The itemnumbers of the parts are also shown on the foldouts.In the subsequent sections, these numbers are referred to in angle brackets < >. If a referenceis made to a foldout, other than that specified in the paragraph title, the foldout’s number isincluded in the numeric reference to its item number; for example:<5/19> or <10:2/5>. The digit(s) before the stroke refer to the foldout number.The foldouts also include other information such as the article number, designation andrelated data.NB! This manual is not considered as a substitute for a proper training course. The informa-tion in the following chapters should be used only after an appropriate course has been com-pleted.
