Overview - Ricoh B202 Service Manual

SCANNING
6.3 SCANNING

6.3.1 OVERVIEW

1 2
1. Scanner HP sensor
2. ADF exposure glass
3. 2nd scanner (2nd carriage)
4. Scanner lamp
5. 1st scanner (1st carriage)
The original on the exposure glass or ARDF exposure glass reflects the light
emitted from the scanner lamp. The reflected light goes to the CCD on the sensor
board by way of the 1st and 2nd scanners. The sensor board converts the CCD
analog signals into digital signals.
When the original is manually placed on the exposure glass, the scanner motor
pulls the 1st and 2nd scanners via mechanical linkage. The original is scanned
from left to right as shown above.
When the original is fed from the optional ARDF, it is automatically transported
onto the ARDF exposure glass, and to the original exit. The original does not stay
on the glass; but goes to the exit. The 1st and 2nd scanners stay at their home
positions.
B202/B178/B180
3 4
10
6-20
5
9
6. Scanner motor
7. Exposure glass
8. Sensor board unit (SBU)
9. Original length sensor
10. Original width sensor
6 7
B178D513.WMF
8
SM