pima1965asked Aug 9, 2017 at 4:57pm
Good evening, sorry if I wrote that my question refers to the LaserJet 4+, but among the models listed I did not find the Laserjet 5. Any of you, kindly, is able to tell me the specifications (air flow, pressure, speed, what is the third wire - alarm signal if the fan stops?) regarding the cooling fan code RH7-1178, that is mounted on the Laserjet 5 / 5N / 5M? I have to replace it and, without buying the original, because it has a very high cost (not to mention the cost of shipping from America to Italy), I am looking for a fan of current production that respects or exceeds the requirements of the original fan. Thanks in advance to all of you. Pierluigi Mariani
You could try to clean it and lubricate it with some synthetic oil. The fans rarely fail.