Scanning System - Canon GP335 Service Manual

CHAPTER 3 EXPOSURE SYSTEM
A. Scanning System
1. Removing the Scanning Lamp
Caution:
1. Do not start working if the scanning
lamp is hot.
2. Do not leave fingerprints on the
surface of the scanning lamp
(especially its transparent area).
3. If the surface of the scanning lamp is
soiled, dry wipe it.
1) Disconnect the power plug.
2) Remove the copyboard glass [1].
Figure 3-501
3-12
[1]
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3) Remove the four screws, and detach the
rear cover.
4) Remove the feeder unit or the copyboard
cover; then, remove the two screws, and
detach the rear upper cover.
5) Disengage the two hooks [3], and
disconnect the connector; then, detach the
scanner cooling fan.
[3]
Figure 3-502
6) Move the No. 1 mirror mount so that it is
as shown in the figure when viewed from
the rear.
7) Remove the screw, and detach the
fluorescent lamp cover [4]; then, pull out
the scanning lamp.
Figure 3-503
[2]
[4]