Xerox Print/Copy Output All White, Heat Transferred Images

I have an aged Xerox 430ST, though it only has about 60,000 pages output.

I expect the problem I have is not make/model specific.

Recently, all the print and copy output (including the self-check output) was blank pages - at first glance.

On closer inspection, it appears that the text/images were heat transferred to the paper (making shiny ghost images on the paper) but the toner did not take to the paper.

Toner cartridge was replaced less that 500 pages ago.

Any ideas.