Canon iR1020 Series Service Manual page 292

Chapter 17
3) Select "MFP" in "Target Selection", and then select "iR1022" in "Model List".
4) Double click the "CA-KEY" folder in "Model List" to confirm the version of the CA certificate. Select "USB" in "Interface", and then click the "START" button.
5) Turn on the power switch of the host machine.
6) Press the following keys on the control panel to enter the service mode.
> 2 Key > 8 Key >
7) Using or , select "#DOWNLOAD".
8) Press the OK key on the control panel to place the host machine in the downloading wait mode (No indicated on LCD).
9) Press the OK button on the SST screen displayed on the display of the PC.
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