Canon ImageRunner 600 Service Manual page 75

CHAPTER 3 ORIGINAL EXPOSURE SYSTEM
Figure 3-101 shows the major components of the original exposure system.
Copyboard glass
No. 2 mirror
No. 2 mirror mount
Copyboard glass sensor
Scanner home
position sensor
(PS1)
No. 2 mirror mount
Component
Scanning lamp
Scanner motor
Scanner home position sensor
Image leading edge sensor
Copyboard glass sensor
Fluorescent lamp temperature
sensor
Light intensity sensor
Fluorescent lamp heater
Mirror
3-2
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Home position
Image leading
edge
No. 1 mirror mount
No. 1 mirror
No. 3 mirror
Figure 3-101 (cross sectional view)
Scanning lamp (FL1)
Light-blocking
plate
Image leading
edge sensor (PS3)
(reverse)
Figure 3-102 (external view)
Notation
FL1
M5
PS1
PS3
PS57
H5
PD2001
H5
Table 3-102 Major Components
Original
Small-size
stream reading
point
Scanning
lamp
Lens
Scanner motor (M5)
(forward)
Light intensity sensor (PD2001)
Description
Fluorescent amp (rated at 43 W)
5-phase stepping motor
Photointerrupter (detects the scanner home position)
Photointerrupter (detects the image leading edge)
Photointerrupter (detects the presence/absence of the
copyboard glass)
Thermistor (detects the fluorescent lamp heater
temperature)
Photodiode (detects the lamp light intensity)
Nickel chrome line (rated at 36 W; stabilizes the
temperature inside the fluorescent lamp)
No. 1 through No. 3 mirrors
CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
Large-size
stream reading
point
CCD
Fluorescent lamp heater (H5)
No. 1 mirror mount