yellow exclamation light on printer means that you have a PAPER JAM ISSUE.
check this link for reference: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01959045&tmp_task=solveCategory&cc=us&dlc=en&lang=en&lc=en&product=3986399
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Re: Help!-hp officejet 4500
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