Upgrading By Replacing The Dimm/Rom - Canon ImageRunner iR8500 Series Service Manual

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.

18.4.8.3 Upgrading by Replacing the DIMM/ROM

iR85+
The following items may be upgraded by replacing the DIMM/ROM; the DIMM/ROM will be provided as a service part on its own:
Main body
DC controller PCB
Finisher
Finisher controller PCB
Saddle stitchere controller PCB
[4]
[5]
[1]
F-18-41
T-18-13
: by replacement of flash ROM DIMM [2]; J521
: by replacement of ROM [4]; IC110 (DIP type)
: by replacement of ROM [5]; Q2 (DIP type)
[3]
[2]
Chapter 18
0009-1340
18-25