2G4
2-2-2
Figure 2-2-2 Scanner unit and document processor (DP)
1. Main PWB.................................................... Controls the software such as the print data processing and provides the
interface with computer.
2. Operation panel PWB .................................. Indicates the LED indicators and controls key inputs.
3. Motor driver PWB......................................... Controls the DP unit.
4. CCD PWB.................................................... Reads the image off originals.
5. Inverter PWB................................................ Controls the exposure lamp.
6. Scanner unit open/close switch ................... Detects when the scanner unit is opened or closed.
7. Document feed sensor................................. Detects the presence of an original.
8. Document conveying sensor........................ Detects the original scanning timing.
9. Scanner home position sensor .................... Detects the optical module unit in the home position.
10. Document feed motor .................................. Drives the original feed section.
11. Scanner motor ............................................. Drives the optical module unit.
12. Exposure lamp............................................. Exposes originals.
Scanner unit
DP
Optical
module unit
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