Canon iR4570 Series Service Manual page 306

Chapter 7
When sliding out the laser scanner unit, be sure to take
care not to touch the PCB mounted to the laser scanner
unit. (The PCB is equipped with a laser scanner
intensity adjustment variable resistor, and contact
with the PCB can change the adjustment setting.)
7.12.10.11 Removing
Hopper Assembly
iR2270 / iR2870 / iR3570 / iR4570
1) Remove the inside base cover [1] and the inside
right color [2].
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2) Disconnect the 3 connectors [1] found at the front
and the connector [2] found at the rear.
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3) Open the 11 wire saddles [1], and pull out the
harness [3] through the hole [2] in the plate.
7-70
the
0007-8384
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4) Remove the 3 screws [1], and detach the hopper
assembly [2].
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When fitting the hopper assembly to the machine, be
sure that the connectors [1] are securely connected. If
the connectors [1] are not connected, the environment
heater will not be supplied with power, leading to
image faults.
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