GE PACSystems RX7i Cpu Programmer's Reference Manual page 421

Chapter 9. Diagnostics
Correction
Set the ECC jumper to the enabled position. (See the instructions provided with the Redundancy CPU
firmware upgrade kit).
4C hex/76 decimal, ECC jumper is enabled, but should be disabled
If the CPU firmware does not support redundancy, the ECC jumper must be in the disabled position.
Correction
Set the ECC jumper to the disabled position (jumper on one pin or removed entirely).
All Others, Module and Configuration do not Match
The CPU generates this fault when the module occupying a slot is not of the same type that the
configuration file indicates.
Correction
1) Replace the module in the slot with the type indicated in the configuration file.
2) Update the configuration file.
406 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual GFK-2950C