GE 90-30 PLC Series Installation And Hardware Manual page 340

Replacing Modules
Modules do not contain configuration switches. The slot in each baseplate (rack) is configured
(using the configuration software) to hold a particular module type (catalog number). This
configuration information is stored in CPU memory. Therefore, when replacing a module, you do
not have to make any hardware settings on the module itself. You do, however, have to ensure that
you install the correct module type in a particular slot.
Be aware that some "intelligent" modules, such as the CPU, PCM, APM, or DSM302, may contain
application programs that will need to be reloaded after the module is replaced. For such modules,
make sure that up-to-date copies of the application programs are maintained in case they have to be
restored later.
For I/O modules with terminal boards, you do not have to rewire a new terminal board in order to
replace the module. If the old terminal board is not defective, it can be removed from the old
module and reinstalled on the new module without removing any of the wiring. Procedures for
removing and installing modules and terminal boards are found in Chapter 2.
Series 90-30 Product Repair
The Series 90-30 products are, for the most part, not considered to be field-repairable. The one
major exception are the few modules that have replaceable fuses. The next section, "Module Fuse
List," identifies these modules and their applicable fuses.
GE offers a repair/product warranty service through your local distributor. Contact your
distributor for details.
GFK-0356Q Chapter 13 Maintenance and Troubleshooting
Maintenance and Troubleshooting
13
13-5