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Slide Scanner Repair Manual Functional Description
Table 2-1 gives a functional description of each of the blocks in the simplified scanning block
diagram in Figure 2-1. For a more detailed description of the scanner PC boards refer to the
following paragraphs in this section of the Repair Manual.
Table 2-1. Component Functions
Component Functions
Microcontroller Controls transporter system, illumination, scanning
operation based on commands from host computer,
performs calibration and operates LED's to provide
indication of operating status.
Lamp Illuminates image being scanned.
Transporter Transports 35 mm transparency through the
illuminated scanning area.
Filter Wheel Used as a shutter for dark calibration. It also houses
a neutral density filter that is used to attenuate the
lamp while scanning.
Note: Used on original SprintScan 35. Also used on
SprintScan 35 ES up to serial no. B6xxxxxxD.
Light Tunnel Used to concentrate light onto the CCD array to lessen
noise.
Note: Used on SprintScan 35 Plus. Also used on
SprintScan 35 ES from serial no. B6xxxxxxE.
Optics Filters and focuses image of 35 mm transparency
onto the CCD array on the image sensor PC board.
Notes: • Filter Wheel Model contains an IR type filter
and a lens.
• Light Tunnel Model contains a ND/IR/AR
type filter and a lens.
CCD Array Converts optical image to an analog signal. The
analog signal is linearly proportional to the intensity of
received light.
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