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Service Guide ML590/ML591
Chapter 2 Principles of Operation
LSI
Location 02D: MSM(79V035).
Detects the output of the two-phase sensor on the DC space motor to control the motor drive
phase.
Transmits and receives serial data to and from the printhead based on the dot timing (which is
derived from the space motor speed).
Controls the external interface. The LSI is connected to the MPU.
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