Specifications

Troubleshooting Controller Board Readings - 5
Controller Board Readings
Voltage readings on the Canon SX engine controller board are
difficult to make and require accessing the underside of the
printer.
Rest the printer on the I/O board rails with the rear side facing
you and the near rail at the front edge of your work surface. If you
need to elevate the printer to get clearer access to the DC
controller board, use the bottom panel and lower cover.
Caution: The printer must be in an upright position during a
print cycle or while the clamshell is open.