After replacing the board, you still reinstall the firmware — the new board will also be in Download Standby until proper system code is uploaded.

Before attempting any complex firmware reinstalls, clear the frozen system memory and attempt to force the machine back into standard user mode using a physical key sequence.

This is the definitive fix for most verified errors. You need:

Unlike common errors such as "Paper Jam" or "Toner Low," the "Download Standby Error Verified" message is not a mechanical failure. It is a .

of the copier to expose the main circuit board (Main Controller).

The copier’s display screen should change from "Download Standby" to progress bars or percentage indicators (e.g., "Writing...", "Receiving Data..."). Do not touch the cables or power switch during this phase. Step 6: Finalize and Reboot

If the initial checks confirm the machine is stuck in "Download Standby," the primary solution is to reload the system software using the SST.

The Canon imageRUNNER 2016 (iR2016) is a classic, rugged monochrome copier and laser printer relied upon by small offices worldwide. However, when attempting to update firmware or recover the machine from a system crash, technicians and users frequently run into a frustrating roadblock: the error.

Launch the Service Support Tool on your PC. Ensure your PC's USB drivers recognize the connected Canon device (it may show up as a generic USB printing support device or Canon firmware device in Device Manager). Step 3: Register the Firmware in SST

Press and hold down the red Stop / Reset key on the physical control panel.

If re-flashing does not work, the E805 error may point to a hardware issue with the DC Controller or power supply.

Install the Service Support Tool on your computer.

Unplug the power cord completely from the wall outlet.

Once SST reports a successful transfer, the copier will write the data to its flash ROM. Wait until the control panel prompts you to restart the machine. Turn the power switch off, wait 10 seconds, and turn it back on.

The "Download Standby" error on a Canon iR2016 is a critical boot failure. It usually requires reloading the system firmware via a PC using the Canon Service Support Tool. If a firmware reload does not resolve the issue, the Main Controller PCB (the main circuit board) must be replaced.

By systematically proceeding from basic physical resets to software flashing and component inspection, you can reliably pull your Canon iR2016 out of the "Download Standby" loop and avoid an expensive mainboard replacement.