Release the Cancel button once the LED lights come on. This resets both the printer and the NVRAM together. Press and hold the Reset button near the back of a 5P or 6P printer as you turn on the power. Holding it for less than 20 seconds resets the printer only.
Once the throttle body is exposed, spray the throttle-body cleaner inside the air duct, and use the brushes to gently dislodge the dirt, gum and varnish that are present. Note: Be very careful not to let the thin, plastic spray nozzle (or anything else!) fall into the throttle-body opening.
The throttle is usually a butterfly valve assembly on the intake manifold, and is connected to the accelerator, or gas pedal, via the throttle linkage. This linkage enables you to control the engineâs throttle by how far you move the gas pedal â the further down you press the gas pedal, the more the throttle opens.