On Wed, Aug 01, 2018 at 02:37:37PM -0700, Rich Shepard wrote: > My 2500L worked well but I've not used it for many months. Two color > cartridges (black and yellow) needed replacing so when a color page printed > in greyscale yesterday I wasn't surprised. Today I changed both cartridges > and discovered that I still cannot get it to print in color.
If your HP2500L is like my HP2605, there is a fan that goes between the laser compartment and the compartment holding the four toner cartridges. Black cartridge on top, yes? If you move the printer around with toner cartridges still installed, the toner cartridges may leak. Through the fan holes, onto the mirrors in the laser compartment. This scatters the laser light rather than focusing it through the windows onto the toner drums. This happened to three of my 2605s. I haven't had time to open them up and clean them yet - a multihour process, because the laser compartment is buried under MANY circuit boards and cables. The black laser window is on top, and gets opaqued last. Toner leaks also happen with old cartridges with old rubber and leaky seals. UGLY, UGLY mechanical design. Makes British sports cars look repairable by comparison. I am contemplating a hack; rather than removing a zillion boards every time I fix, I open it up once and cut a BIG hole through the aluminum bottom of the printer, so I can reach in through the hole to clean the mirrors, or just drop the whole laser and mirror assembly. I haven't had time to explore this yet. I imagine this requires making an aluminum gasket ring with PEM nuts and countersunk screw holes through the the original bottom. An enormous waste of time, but a cool hack. Also a filter over the fan. What the HELL was HP thinking? Realistically, I must abandon all my HP2605s and buy a new printer. Duplexing and Postscript 3 and ethernet required, big cheap toner cartridges with third-party knockoffs also. I hope to find something 10-year durable; it may take that long to recover from a trade war with China. Sadly, most new printers are designed for a three year mechanical life. Keith -- Keith Lofstrom [email protected] _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
