I have now managed to print, but the fault hasn't disappeared completely. With some patience and adopting your advice, the printer eventually works OK. However, when first turned on, it still does a half feed without anything in the print queue, and the yellow information light winks. Pressing the start button again causes the paper feed to complete. It then seems to print any new document satisfactorily. I will assess the situation when I next need to print. I'll be in touch again if still in trouble.
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