Image Scanner Section; Optical Section - Kyocera TASKalfa 420i Service Manual

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Optical section

The optical section consists of the scanner, mirror frame and image scanner section for scanning and the laser scanner
unit for printing.

(1) Image scanner section

The original image is illuminated by the exposure lamp (EL) and scanned by the CCD in the CCD PWB (CCDPWB) via the
three mirrors and lens, the reflected light being converted to an electrical signal. The mirror 1 and 2 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 2 frame is half the
speed of the mirror 1 frame.
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5
6
(1) Mirror 1 frame
(2) Exposure lamp (EL)
(3) Scanner reflector
(4) Mirror A
(5) Mirror 2 frame
(6) Mirror B
(7) ISU lens
12 3 2
1
4
Figure 2-1-5 Image scanner section
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(8) CCD PWB (CCDPWB)
(9) ISC PWB (ISCPWB)
(10) ISU cover
(11) Scanner wire drum
(12) Contact glass
(13) Home position switch (HPSW)
(14) Original detection switch (ODSW)
2KR/2KS
10 14
8 11 9
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