HP 3150 EN - Manual (Page 175)

EN Functional checks 173
Functional checks
Simple hardware test
A simple test of the hardware is printing and copying the
demonstration page.
To perform the simple hardware test
1 At the product control panel, press V OLUME +C ONTRAST
simultaneously to print the demonstration page.
2 Copy the demonstration page by placing it in the document feeder
tray, waiting for the product to load the page, and then pressing
C OPY .