Kyocera KM-4230 - Page 43

2A3/4
1-3-20
Original scanning
The original image is illuminated by the exposure lamp (EL) and scanned by the CCD
PCB (CCDPCB) in the image scanning unit via the three mirrors, the reflected light
being converted to an electrical signal.
The scanner and mirror frame travel to scan on the optical rails on the front and rear of
the machine to scan from side to side. The speed of the mirror frame is half the speed
of the scanner. When the SRDF is used, the scanner and mirror frame stop at the DF
original scanning position to start scanning.
CN1-1–
CN2-1–
CN4-2
CN2-6
CN2-1 CN2-4
CN1-140 CN7-1– CN7-2
CN5-1– CN5-16
CN11-1– CN11-11 CN12-1– CN12-7
CN9-1– CN9-4 CN8-1– CN8-5 CN7-1– CN7-13
CN1-1– CN1-16
CN1-1– CN1-140
CN3-6
CN3-1–
CN1-6
CN1-1–
SMPCB INPCB
CCDPCB
EPCB
MPCB
SM
SHPSW
EL
Original
Drum
LSU
Figure 1-3-18 Optical section block diagram