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Overview
The engine checker is a tool created to help troubleshoot the printer engine. It is used
to test NVRAM, switches, sensors, and motors, and can run a set of basic functions.
It should be used when making potentiometer adjustments (also referred to as
"volume" adjustments, which is the terminology used on the engine checker message
display).
The engine checker is menu driven. The following functions may be performed using
the engine checker:
Volume Adjustment
The engine checker is capable of simultaneously driving motors and lamps and
sensing sensors and encoders. While driving the circuits, volume adjustments can
also be made.
Checking Basic Operations
By selecting a single menu function, a check can be performed for paper movement
through the printer for both cut–sheet and fan–fold paper.
8–2
Engine Checker
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