Gestetner B070 Service Manual page 544

SCANNING
6.7 SCANNING
6.7.1 OVERVIEW
1
16
17
1. Scanner Motor
2. White Plate (on exposure glass)
3. 2nd Mirror
4. Exposure Lamp (Xenon)
5. Exposure Glass
6. 1st Mirror
7. Lamp Regulator
8. SBU Cooling Fan
9. Optics Cooling Fan
One xenon lamp (23W) as the exposure lamp [4] illuminates the original. The
image is reflected onto the CCD [11] (600 dpi resolution) via the 1st, 2nd, and 3rd
mirrors, and through the lens [13].
The lens, CCD, and SBU are in a single unit, the lens block. The optical axis, focus,
and MTF are pre-adjusted, so this lens block requires no adjustment in the field.
The 1st scanner consists of the exposure lamp [4], the lamp regulator [7] and the
1st mirror.
Two fans, the optics cooling fan [9] and the SBU cooling fan [8], draw cool air into
the scanning unit. The optics cooling fan turns on when the scanner motor starts
and turns off 10 seconds after the scanner motor turns off. The SBU cooling fan
operates while the operation switch is on. The optional optics anti-condensation
heater [17] (if installed as an option) turns on while the main switch is off, to
prevent moisture from forming on the optics.
B070/B071
CÓPIA NÃO CONTROLADA
4
2 3
15 13
14
10. LCDC (LCD Control Board)
11. CCD (Charge Coupled Device)
12. Original Length Sensor (APS)
13. Scanner Lens
14. 3rd Mirror
15. Original Width Sensors 1, 2, 3 (APS)
16. Scanner HP Sensor
17. Optics Anti-condensation Heater (option)
6-28
CÓPIA NÃO CONTROLADA
6
7
5
12
11
8
9
10
B070D001.WMF
SM