Parts Replacement Procedure; Laser Scanner Unit; Before Removing The Laser Unit; Removing The Laser Unit - Canon iR3245 Series Service Manual

Chapter 6

6.4 Parts Replacement Procedure

6.4.1 Laser Scanner Unit

6.4.1.1 Before Removing the Laser Unit

iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
1) Remove the front cover unit. (page 10-17)Reference[Removing the
Front Cover Unit]
2) Remove the left cover. (page 10-17)Reference[Removing the Left Cov-
er]
3) Remove the inside base cover. (page 10-16)Reference[Removing the
Inside Base Cover]

6.4.1.2 Removing the Laser Unit

iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
1) Open the 5 wire saddles [1] at the left side to disconnect the 4 connectors
[2].
[2]
[2]
[1]
Be sure not to make the disconnected connector [1] come into contact with
the PCB attached to the laser scanner unit (The PCB is equipped with the
laser intensity adjustment volume resistor, so contact with the PCB can
change the adjustment setting.
6-8
[2] [1]
F-6-8
2) Disconnect the connector [1] to remove the fixture [2].
0018-9693
0018-9692
3) Lift the front of the laser unit [1] to pull it out to the front.
When pulling out the laser scanner, be careful not to touch the PCB attached
to the laser scanner unit (The PCB is equipped with the laser intensity
adjustment volume resistor, so contact with the PCB can change the
adjustment setting).

6.4.1.3 After Replacing the Laser Scanner Unit

iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
When replacing the laser unit, enter the values recorded on the label on the
laser scanner unit to be replaced for the following in service mode.
Difference in magnification between the lasers
[1] COPIER > ADJUST > LASER > LDADJ1-K
[2] COPIER > ADJUST > LASER > LDADJ2-K
[3] COPIER > ADJUST > LASER > LDADJ3-K
Difference in phase between the lasers
[4] COPIER > ADJUST > LASER > LDADJ4-K
[5] COPIER > ADJUST > LASER > LDADJ5-K
[6] COPIER > ADJUST > LASER > LDADJ6-K
[1] [2]
F-6-9
F-6-10
[1]
0020-0579