COPYRIGHT
©
2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
CHAPTER 6 TROUBLESHOOTING
6-43
2.7 Items Related to Electrical Components
2.7.1 Electrical Components Requiring Work After Replacement
2.7.2 Points to Note when Replacing the CCD Unit
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 con-
nected to a power outlet even when its main power switch is turned off. Be
sure to disconnect the power plug.
3) Replace the CCD unit.
4) After assembling the machine, connect the power plug to the power outlet, and turn on
the main power switch.
5) Execute the following service modes in sequence:
1. COPIER>FUNCTION>CCD>CCD-ADJ
2. CCD edge gain correction position auto adjustment:
COPIER>FUNCTION>CCD>EGGN-POS (iR7200)
3. COPIER>FUNCTION>CCD>LUT-ADJ (iR8500)
6) See that all items of COPIER>ADJUST>CCD and all data of
COPIER>ADJUST>LAMP>L-DATA (iR8500 only) are updated. Record the results on
the service label.
7) Turn off and then on the main power switch.
Part name
Standard white plate
Scanning lamp
CCD unit
Reader controller PCB
Main controller PCB
HDD unit
DC controller PCB
High-voltage DC PCB
Laser unit
Potential sensor/potential control PCB
Work reference
P. 6-43
P. 6-44
P. 6-44
P. 6-46
P. 6-47
P. 6-47
P. 6-48
P. 6-49
P. 6-50
P. 6-50
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