User Guide

Failure detection
The DC controller monitors the following motors to determine a motor failure:
●
Drum motor
●
Scanner motor
●
Fuser motor
The DC controller determines if the motor has failed and notifies the formatter when the motor
encounters the following conditions:
●
Startup failure—The motor does not reach a specified rotational count within a specified time from
when the motor starts.
●
Rotational failure—The rotational speed of the motor is not in the specified range for a specified
time after the motor reaches a specified speed.
The DC controller notifies the formatter of a beam detect (BD) failure when it detects a rotational failure
of the scanner motor.
The DC controller monitors the related part condition of the following motors to determine a motor
failure:
●
Upper cassette lifter motor
●
Lower cassette lifter motor
8 Chapter 1 Theory of operation ENWW