Canon External 2/3 Hole Puncher-B1, Service Manual

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Chapter 3
3-3
F-3-11
11) Lift up the front side of the punch unit section [1] first, then move in the
direction of the arrow to remove the punch unit section [1].
F-3-12
12) Disconnect the connector [1] on LED PCB.
F-3-13
13) Remove the slide shaft support [1], the sensor mount (lower) [2] and the
puncher knob [3] from the punch unit section.
The slide shaft support [1] is not attached to punch unit section that are
currently set as service parts. When replacing the punch unit section, be
sure to attach the slide shaft support that was in use beforehand. If you
forget to attach the slide shaft support, the machine may malfunction.
F-3-14
3.3 Electrical System
3.3.1 Punch Unit Harness
3.3.1.1 Notification when dismounting the Punch Unit
Harness
0023-7152
When removing the punch unit, the punch unit section sometimes opens.
If necessary, perform work with the punch unit section in an open state.
3.3.1.2 Removing the Punch Unit Harness
0023-7153
1) Remove the rear cover.
2) Remove the right guide unit.
3) Remove the upper cover.
4) Disconnect the two connectors [2] on the punch controller PCB [1] and
remove the harness from the edge saddle [3].
F-3-15
5) Remove the two tie wraps with lock [1] while holding its claw between
your fingers. (The tie wraps must be removed without being cut.
6) Disconnect the three connectors [2].
7) Free the harness [4] from the three harness stops [3].
F-3-16
8) Turn the gear [1] in the direction of the arrow, and move the punch unit
section [2] to the front side.
[2]
[1]
[2]
[4]
[3]
[1]
[1]
[3]
[2]
[2]
[1]
[2]
[3]
[3]
[1]
[3]
[4]