Xerox Phaser 3300 Servce Manual page 51

Phaser 3300MFP Service Manual
LSU
The LSU consists of LD (Laser Diode) and polygon motor control. When
the controller generate the printing signal LD will turn on and Polygon
motor starts. If the receiving part in LSU detect the beam and then Hsync
is generated. When the rotation of polygon motor is steady, it is time of
LSU ready status for printing. If either of two condition is not satisfied,
LSU error is expected.
Trouble
Polygon Motor Error
Hsync Error
Scanner (ADF)
Scanning Method: Color CCD (600 x 1200 dpi)
Scan speed: SDMP 28 cpm/MDSP 20 cpm
Failure Analysis
No steady rotation of Polygon Motor
In spite of steady rotation of Polygon Motor,
No generation of the Hsync signal
Theory of Operation
s3300mfp-150
2-9