Thank you Ernst, all good questions: Z3200 PS 44", I believe its a PCL3 printing through the HP utility via USB. Flattened 8 bit tiff or psd. Tried many different files of varying sizes. I get a message of network connection problems.
TIFFs can be CMYK, if you use the PCL3 driver it may not accept a CMYK one or in best case do an ugly color transformation. Try the PS3 driver with HP Print utility.
If that is not the cause you should try to print a TIFF from another application to the PCL3 driver. What actually goes to the driver from an application is not even a TIFF to my knowledge but BMP or something like that on Windows.
Met vriendelijke groet, Ernsthttp://www.pigment-print.com/spectralplots/spectrumviz_1.htm
December 2012, 500+ inkjet media white spectral plots.