Samsung SCX-6555N Service Manual page 37

2.2.2.5 LSU
■ 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
2.2.2.6 Scanner( DADF)
■ Scanning Method: Color CCD
■ Scan speed : Mono 55/Color 45cpm@300*300
■ FCOT (first copy out time) : within 5sec
■ DADF Copy speed : simplex 55cpm(LTR)
Service Manual
CÓPIA NÃO CONTROLADA
Product spec and feature
No steady rotation of Polygon Motor
In spite of steady rotation of Polygon Motor, No the generation of the Hsync
signal
duplex 36cpm(LTR)
CÓPIA NÃO CONTROLADA
Failure Analysis
2-24
Samsung Electronics