Laser Scanner Unit - Canon iR6570 series Service Manual

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6.4 Parts Replacement Procedure

6.4.1 Laser Scanner Unit

6.4.1.1 Removing the Laser Scanner Unit
1) Open the manual feed tray cover [1]; then, remove the screw [2] from
the door strap, and fully open the manual feed tray cover [1].
2) Remove the screw [1], and slide the developing assembly locking unit
[2] in the direction of the arrow to detach.
3) Remove the 4 screws [3], and detach the scanner cover [4].
[3]
[4]
[1]
[2]
4) Disconnect the 3 connectors [1].
5) Remove the screw [2].
6) Remove the 2 screws [3] together with the inside spacer; then, detach
the 2 leaf springs [4].
7) Hold the front of the laser scanner unit [5], and lift and slide it out.
[4]
[3]
0009-2377
[2]
[1]
F-6-7
[3]
F-6-8
[1]
[5]
[4]
[3]
[2]
F-6-9
6.4.1.2 When Replacing the Scanner Unit
If the temperature of the fixing assembly is 150 deg C or higher when
the main power switch is tuerned on, the machine will not execute
potential control. If such is the case after replacing the scanner unit,
manually execute potential control in service mode as follows:
1) Make the following selections in service mode: COPIER>
FUNCTION> DPC> DPC; then, enter '1', and press [OK].
2) Turn off and then back on the main power switch.
Chapter 6
0009-5811
6-7

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