Greetings,
A pink cast on the entire output usually indicates double color management. If only on the edges, something is probably dirty.
It looks like your magenta toner has spilled inside the device. Q-Tips, Cotton balls and isoprophyl alcohol might help. You wil need to inspect the device, paper feed, duplexer and output rollers for the source. Also check the roller in the magenta toner itself.
~Rick
Bay Area - CA
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