Prepare the Printer
1.Turn off the printer and unplug the power cord.
2.Detach the interface cable from the printer.
3.Remove and save the thumbscrew at the top and bottom which hold the control board in place.
C7100/C7300/C7500C9300/C9500
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3.Remove and save the thumbscrew at the top and bottom which hold the control board in place.
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