Other Upgrade Methods - Canon ImageRunner iR8500 Series Service Manual

DC controller PCB
In addition to the program for the master CPU, the ROM of the finisher controller PCB contains programs for the slave CPU, requiring you to upgrade the
slave CPU software whenever you have replaced the ROM. For details, see the Service Manual of the finisher.
MEMO:
Versions of the DC controller PCB in this machine cannot be upgraded from PC.

18.4.8 Other Upgrade Methods

18.4.8.1 Upgrading by Replacing the DIMM/ROM
iR105i/iR105+ / iR9070
The following items may be upgraded by replacing the DIMM/ROM; the DIMM/ROM will be provided as a service part on its own:
Copier
Reader controller PCB:
DC controller PCB:
ADF
ADF Controller PCB:
Finisher
Finisher controller PCB:
Saddle stitchere controller PCB:
[1]
F-18-39
T-18-10
: by replacement of flash ROM DIMM [2]; J521
T-18-11
by replacement of flash ROM DIMM [1]; J1106
by replacement of flash ROM DIMM [2]; J521
by replacement of ROM [3]; IC1 (DIP type)
by replacement of ROM [4]; IC110 (DIP type)
by replacement of ROM [5]; Q2 (DIP type)
Chapter 18
0008-5564
18-23