Replacing The Potential Sensor/Potential Control Pcb - Canon ImageRunner iR8500 Series Service Manual

9) Fit the potential checker electrode (FY9-3041) [2] to the potential
sensor [1].
[2]
When fitting the checker electrode to the potential sensor, make sure that
the magnet of the checker electrode will not come into contact with the
potential sensor cover.
10) Connect the cable [1] of the potential sensor checker electrode to the
frame assembly (GND) [2] of the machine.
Never bring the clip into contact with the sensor cover. Be sure to fit it
fully away from the sensor window.
11) Fit the door switch actuator in the door switch assembly.
12) Connect the power plug to the power outlet, and turn on the main
power switch.
13) Execute the following in service mode: COPIER> FUNCTION>
DPC>OFST.
14) Record the value of <OFST> on the service label.
15) Turn off the main power switch.
16) Disconnect the power plug from the power outlet.
17) Detach the potential sensor checker electrode.
18) Put back the potential sensor support plate.
19) Connect the power plug, and turn on the main power switch.
14.7.15 Replacing the Potential Sensor/Potential
Control PCB
/ iR8070
[1]
F-14-88
[2]
[1]
F-14-89
0008-8470
1) Check to make sure that the Execute/Memory lamp in the control
panel is OFF, and turn off the main power switch.
2) Disconnect the power plug from the power outlet.
The machine remains supplied with power as long as its power plug is
connected to a power outlet even when its main power switch is turned
off. Be sure to disconnect the power plug.
3) Replace the potential sensor/potential control PCB.
The potential sensor and the potential control PCB are adjusted as a pair,
requiring simultaneous replacement.
4) Remove the developing assembly, and slide out the process unit.
5) Disconnect the connector [1] of the potential sensor.
6) Remove the two screws [1], and detach the potential sensor support
plate [2].
7) Put the developing assembly and the process unit back into their
initial positions.
8) Connect the connector [1] of the potential sensor.
9) Fit the potential sensor checking electrode (FY9-3041) [2] to the
potential sensor [1].
Chapter 14
[1]
F-14-90
[1]
[2]
F-14-91
[1]
F-14-92
14-39