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Service Guide ML520/521
Chapter A Reference Charts
A.2.04 Space Motor Board
Function
The space motor board contains an encoder disk and photosensor. The encoder disk and the
photosensor generate phase signals. These signals governs the speed and direction of the space motor
via the LSI and microprocessor.
Firmware
NONE
Fuses
NONE
Jumpers
NONE
Sensors
Photosensor: used to monitor space motor movement.
Switches
NONE
Test Points
NONE