Polaroid SprintScan SS35 Repair Manual page 34

Slide Scanner Repair Manual
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.
Component
Microcontroller
Lamp
Transporter
Filter Wheel
Light Tunnel
Optics
CCD Array
Table 2-1. Component Functions
Controls transporter system, illumination, scanning
operation based on commands from host computer,
performs calibration and operates LED's to provide
indication of operating status.
Illuminates image being scanned.
Transports 35 mm transparency through the
illuminated scanning area.
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.
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.
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
• Light Tunnel Model contains a ND/IR/AR
Converts optical image to an analog signal. The
analog signal is linearly proportional to the intensity of
received light.
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Functions
and a lens.
type filter and a lens.
Functional Description