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20 July 2005
LSU
The LSU consists laser diode and the polygon motor control. The laser diode turns
on and the polygon motor is enabled when the printing signal occurs. Hsync occurs
when the light sensor detects the beam, and LReady occurs when the polygon
motor speed becomes a normal. The LSU is ready if these two conditions are
satisfied. The errors in the table below show if the two conditions are not satisfied.
Error Type
Polygon motor error
Hsync error
The polygon motor speed does not become
stable.
The polygon motor speed is steady, but the
Hsync is not generated.
6-17
ASIC(SPGP)
Description
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