When Replacing The Dc Controller Pcb; Replacing The Potential Sensor/Potential Control Pcb - Canon ImageRunner iR8500 Series Service Manual

outlet, and turn on the main power switch.
3) Enter the values (4 types) indicated on the label attached to the new
HV-DC PCB in service mode.
COPIA>ADJUST>DEVELOP>HVT-DE
COPIA>ADJUST>HV-SP>HVT-SP
COPIA>ADJUST>HV-TR>HVT-TR
COPIA>ADJUST>HV-TR>H-PRE-TR
4) Turn off and then on the main power switch.

14.7.9 When Replacing the DC Controller PCB

iR105i/iR105+ / iR9070
1) If possible, print out the user mode/service mode data.
2) Replace the DC controller PCB.
3) Execute the following in service mode to clear the RAM:
COPIER> FUNCTION> CLEAR> DC-CON.
4) Assemble the machine; then, connect the power plug to the power
outlet, and turn on the main power switch.
5) Enter the following indicated on the service label:
COPIER> ADJUST> LASER (all items)
COPIER> ADJUST> DEVELOP (all items)
COPIER> ADJUST> DENS (all items)
COPIER> ADJUST> BLANK (all items)
COPIER> ADJUST> V-CONT (all items)
COPIER> ADJUST> HV-PRI (all items)
COPIER> ADJUST> HV-TR (all items)
COPIER> ADJUST> HV-SP (all items)
COPIER> ADJUST> FEED-ADJ (all items)
COPIER> ADJUST> CST-ADJ (all items)
COPIER> ADJUST> EXP-LED (all items)
6) Execute the following in service mode: COPIER> FUNCTION>
MISC-P> CL-ADJ (all items)
COPIER> FUNCTION> SEN-ADJ (all items)
7) Enter the values (4 types) indicated on the label attached to the new
DC controller PCB in service mode.
COPIER>ADJUST>DEVELOP>D-HV-DE
COPIER>ADJUST>HV-TR>D-HV-TR
COPIER>ADJUST>HV-TR>D-PRE-TR
COPIER>ADJUST>HV-SP>D-HV-SP
8) Turn off and then on the main power switch.

14.7.10 When Replacing the DC Controller PCB

/ iR85+ / iR8070
1) If possible, print out the user mode/service mode data.
2) Replace the DC controller PCB.
3) Execute the following in service mode to clear the RAM:
COPIER>FUNCTION>CLEAR>DC-CON.
4) Assemble the machine; then, connect the power plug to the power
outlet, and turn on the main power switch.
F-14-70
0008-4623
F-14-71
0008-8601
5) Enter the following indicated on the service label:
COPIER>ADJUST>LASER (all items)
COPIER>ADJUST>DEVELOP (all items)
COPIER>ADJUST>DENS (all items)
COPIER>ADJUST>BLANK (all items)
COPIER>ADJUST>V-CONT (all items)
COPIER>ADJUST>HV-PRI (all items)
COPIER>ADJUST>HV-TR (all items)
COPIER>ADJUST>HV-SP (all items)
COPIER>ADJUST>FEED-ADJ (all items)
COPIER>ADJUST>CST-ADJ (all items)
COPIER>ADJUST>EXP-LED (all items)
6) Execute the following
COPIER>FUNCTION>MISC-P>CL-ADJ (all
items)
COPIER>FUNCTION>SEEN>ADJ (all items)
7) Enter the values (4 types) indicated on the label attached to the new
DC controller PCB
in service mode.
COPIER>ADJUST>DEVELOP>D-HV-DE
COPIER>ADJUST>HV-TR>D-HV-TR
COPIER>ADJUST>HV-TR>D-PRE-TR
COPIER>ADJUST>HV-SP>D-HV-SP
8) Turn off and then on the main power switch.
14.7.11 Replacing the Potential Sensor/Potential
Control PCB
iR85+
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.
Chapter 14
in service
F-14-72
0008-9087
mode:
14-35