гарантийное и постгарантийное обслуживание(starkside); сервис(max UK hits.Maintenance of products by the manufacturers or their agents after purchase. This often takes the form of a guarantee (see warranty), which is effective for a stated period during which the service is free in respect of both parts and labour, followed by a maintenance contract for which the buyer of the product has to pay. Efficient and effective after-sales service is an essential component of good marketing policy, especially for such consumer durables as cars and computers; in the case of exported goods it is of overriding importance. OB&M Alexander Demidov)
техническое обслуживание(The provision after goods have been sold of services which make them more useful to customers. This can include advice on and training in the use of the product; routine maintenance, servicing and repairs in the event of breakdown; provision of materials and spare parts; replacement under warranty in the event of failure of the goods supplied; and updating if the product is developed further. Oxford Economics Alexander Demidov)
послепродажное обслуживание(услуги, оказываемые продавцом покупателю после сделанной им покупки, напр., ввод в эксплуатацию - установка, подключение, наладка - консультации по использованию, гарантийный ремонт, замена бракованных узлов и т.д.)