HP 3150 manual Engine test button location, To print an engine test

Engine test

The engine test is used to verify that the print engine is functioning correctly. The formatter is bypassed during an engine test, so the engine test is useful for isolating printer problems. The engine test prints vertical lines down the entire printable area of a page and is also useful for checking and adjusting registration.

Engine test button location

The engine test switch is accessible without removing the covers. It is located on the bottom of the HP LaserJet 3100/3150 product.

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Figure 75. Engine test switch location

To print an engine test

Lift the front of the product and squeeze the engine test switch. A single test page is printed.

174 Troubleshooting EN