First of all, determine the extent of oxidation on the aluminum surface. If it is determined that the surface is in relatively good shape, i.e. light oxidation, then skip this step and move on to polishing with Flitz.
Q: how long can a usb printer cable be? I am trying to connect a HP laserjet 2840 to my iMac with a USB 2.0 cable that is 25ft long. The computer does not recongnize the printer or that it is connected when I plug them both in. The same 25ft cable works fine when connected to my other HP P1006 printer. The HP 2840 works fine when I use a shorter usb cable.
Close any open programs on your computer and restart the operating system. Press the printer's Power button to turn it off as well. Unplug the printer's power cord from the printer. After 5 seconds, reconnect the power cord and turn the printer back on.Verify that the USB cable that connects the computer to the printer is securely plugged into both devices.Move the cable to a USB plug on the computer that has worked with other USB devices.nplug the printer's power cord from the printer. After 5 seconds, reconnect the power cord and turn the printer back on. Verify that the USB cable that connects the computer to the printer is securely plugged into both devices. Move the cable to a USB plug on the computer that has worked with other USB devices.